Caxias Climate & Monthly Temperature Overview – Brazil

Temperature and Precipitation

Caxias, Brazil, experiences a tropical savanna climate, characterized by distinct wet and dry seasons. Its average annual temperature ranges from 22°C to 27°C, with relatively little variation throughout the year. The warmest months are January and February, with average temperatures above 27°C, while the coolest months are June and July, when temperatures can drop to around 22°C. The city receives an average of 1,100 mm of rainfall annually, concentrated primarily during the wet season from December to April. During this period, heavy thunderstorms and occasional flooding are common.

Humidity and Sunshine

Caxias is known for its humid climate, particularly during the wet season. The average relative humidity ranges from 60% to 90% throughout the year, making the air feel muggy and uncomfortable. However, the city also experiences plenty of sunshine, with an average of six to eight hours of sunlight per day. The dry season, which runs from May to November, is characterized by clear skies and low humidity, providing respite from the oppressive heat and humidity of the wet season. Overall, Caxias offers a year-round warm and humid climate with distinct wet and dry seasons.

Monthly Temperature Averages

Caxias, Brazil, experiences a tropical climate with distinct wet and dry seasons. The average monthly temperature throughout the year is relatively consistent, hovering around 24-28°C (75-82°F). The warmest month, January, has an average temperature of 28°C (82°F), while the coolest month, June, has an average temperature of 24°C (75°F). The temperature remains relatively stable throughout the year, with minimal fluctuations between the seasons.

Seasonal Variations

During the wet season, from October to March, Caxias experiences higher precipitation and slightly elevated temperatures. The average temperature during these months ranges from 26-28°C (79-82°F). The dry season, from April to September, is typically drier and cooler. The average temperature during this season ranges from 24-27°C (75-81°F). Overall, the temperature in Caxias is consistent and comfortable year-round, making it an ideal destination for travelers.

Cloud Coverage

Caxias, Brazil, experiences a wide range of cloud cover throughout the year. During the austral winter months (June-September), cloud cover tends to be more prevalent, particularly during the morning and evening hours. As the sun rises, clouds often dissipate, leaving clear skies and ample sunshine. However, as the day progresses, clouds may build up again, resulting in partly cloudy conditions in the afternoon.

In contrast, during the austral summer months (December-March), cloud cover is generally less frequent and skies tend to be clearer. During this time, Caxias enjoys long stretches of sunny weather, with only occasional cloudy days. However, even during the summer, brief, localized showers can occur, typically in the late afternoon or early evening. These showers rarely last long and do not significantly impact the overall cloud cover.

Cloud Types

The types of clouds observed in Caxias, Brazil, vary depending on the season and prevailing weather conditions. During the austral winter months, stratus and stratocumulus clouds are common, often forming a thick, gray layer that covers the sky. These clouds can sometimes produce drizzle or light rain. Cumulus clouds, which appear as puffy white or gray masses, are also frequently seen and can indicate fair weather or the development of showers.

In the austral summer months, cirrus clouds are more prevalent. These thin, wispy clouds are composed of ice crystals and are typically found at high altitudes. Cirrus clouds often appear as streaks or feathery patches in the sky and do not produce any precipitation. Cumulonimbus clouds, which are associated with thunderstorms, can also occur in Caxias, but they are less common during the summer months.

Seasonality of Precipitation

Caxias, Brazil, experiences a distinct wet and dry seasonality in its precipitation patterns. The wet season typically spans from October to April, coinciding with the austral summer months. During this period, the Intertropical Convergence Zone (ITCZ) shifts southward, bringing frequent rainfall events to Caxias. Conversely, the dry season extends from May to September, when the ITCZ migrates northward, resulting in a significant decrease in precipitation.

Rainfall Variability

Within the wet season, rainfall variability can be substantial from year to year. La Niña and El Niño events exert a significant influence on the amount and distribution of precipitation in Caxias. During La Niña years, the ITCZ is typically positioned further south, leading to enhanced rainfall and an extended wet season. Conversely, El Niño events often result in a weaker and more northerly ITCZ, resulting in decreased precipitation and a shorter wet season.

Annual Rainfall in Caxias

Caxias, Brazil, experiences a significant amount of annual rainfall. On average, the city receives approximately 1,500 millimeters (59 inches) of precipitation per year, distributed relatively evenly throughout the twelve months. The wettest months are typically from October to March, during which rainfall can exceed 200 millimeters (8 inches) per month. Conversely, the driest months are June and July, with average rainfall below 100 millimeters (4 inches) per month.

Monthly Rainfall Patterns

The monthly rainfall patterns in Caxias exhibit a distinct seasonality. During the wet season, from October to March, heavy rainfall is brought by the South Atlantic Convergence Zone (SACZ), a meteorological system that develops over the southern tropical Atlantic Ocean. The SACZ produces widespread thunderstorms and tropical downpours, leading to significant precipitation across the region. In contrast, the dry season, from June to September, is characterized by lower humidity and less frequent rainfall, primarily due to the dominance of stable atmospheric conditions and the absence of the SACZ.

Snowfall in Caxias, Brazil

Snow is an uncommon phenomenon in Brazil, but on August 27, 2021, the southern city of Caxias experienced a historic snowfall. It marked the first time snow has been documented in the city in over 28 years. The snowfall, which lasted for approximately an hour, was particularly impactful as it occurred in the middle of the day and reached an accumulation of up to 5 centimeters in some areas.

The snowfall in Caxias was caused by a cold front that moved through the region, bringing with it freezing temperatures and moisture. The unusual weather conditions were attributed to a combination of factors, including global climate change and a strong polar vortex. The snowfall created a picturesque winter wonderland in Caxias, with snow covering rooftops, trees, and vegetation. Residents and visitors alike reveled in the rare opportunity to experience snowfall in Brazil.

Overview of Solar Radiation Patterns

Caxias, Brazil, experiences a year-round tropical climate and enjoys abundant sunshine throughout the year. The city receives an average of 7.5 hours of sunlight per day, distributed fairly evenly across the seasons. The intensity of solar radiation varies based on time of day, with the highest levels occurring around noontime. The solar radiation is strongest during the summer months of December through February, when the days are longer and the sun is at its highest point in the sky. During this period, Caxias experiences daily solar radiation levels of up to 6 kWh/m2.

Solar Energy Potential

Due to its high solar radiation levels, Caxias has a significant potential for solar energy generation. The city is part of the Brazilian state of Maranhão, which has the second-highest solar irradiation in the country. The government of Brazil has been actively promoting solar energy development in recent years, and Caxias is well-positioned to benefit from these initiatives. The city has seen a surge in the installation of photovoltaic (PV) systems on rooftops and solar farms. As the cost of solar technology continues to decline, the use of solar energy is expected to grow even further in Caxias, contributing to the city’s sustainable energy supply.

Moonrise and Moonset Times in Caxias, Brazil

In Caxias, Brazil, the moonrise and moonset times vary throughout the year due to the Earth’s orbit around the Sun and the Moon’s orbit around the Earth. The moonrise time is the moment when the upper limb of the Moon first appears over the eastern horizon, while the moonset time is the moment when the upper limb of the Moon disappears below the western horizon.

The moonrise and moonset times in Caxias, Brazil, can be found using astronomical tables or online calculators. These tools take into account the user’s location, date, and time to provide accurate predictions. It’s worth noting that the moonrise and moonset times can vary slightly from day to day due to factors such as atmospheric conditions and the Moon’s elliptical orbit.

Moon Phases Visible in Caxias, Brazil

Caxias, Brazil, experiences a variety of moon phases throughout the month, which are caused by changes in the relative positions of the Earth, Moon, and Sun. The most common moon phases are the new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, and waning crescent. These phases repeat in a cycle that lasts approximately 29.5 days.

The new moon occurs when the Moon is between the Earth and the Sun, with the side facing the Earth not illuminated. During this phase, the Moon is not visible in the night sky unless it is during a solar eclipse. As the Moon moves around the Earth, it gradually becomes illuminated, and we observe the waxing crescent, first quarter, and waxing gibbous phases. The full moon occurs when the Moon is on the opposite side of the Earth from the Sun, with the entire side facing the Earth illuminated. After the full moon, the Moon’s illuminated portion gradually decreases, leading to the waning gibbous, third quarter, and waning crescent phases before returning to the new moon.

Humidity in Caxias, Brazil

Caxias is a city in the northeastern part of Brazil. It has a humid tropical climate, with high temperatures and humidity throughout the year. The average annual temperature is 26.6°C (79.9°F), and the average annual relative humidity is 82%.

The humidity in Caxias is highest during the rainy season, which runs from October to May. During this time, the average relative humidity is over 90%. The humidity is lowest during the dry season, which runs from June to September. During this time, the average relative humidity is around 70%.

The high humidity in Caxias can make it uncomfortable for people to live in. The heat can be oppressive, and the humidity can make it difficult to breathe. However, the humidity also helps to support a diverse ecosystem. The rainforests in the region are home to a wide variety of plants and animals.

Wind Patterns in Caxias, Brazil

Caxias, Brazil, experiences prevailing winds from the north-northeast throughout the year. These winds are largely influenced by the South Atlantic Subtropical High, a semi-permanent high-pressure system that steers air masses across the region. During the summer months (December to February), the winds intensify, bringing hot and humid air from the Amazon Basin. This influx of moisture can lead to frequent thunderstorms and heavy rainfall.

Seasonal Variations

In the winter months (June to August), the winds weaken slightly and shift more towards the east. This seasonal change is associated with the movement of the South Atlantic Subtropical High, which migrates northward during the southern hemisphere’s winter. The weaker winds during this time allow for more stable weather conditions, with less precipitation and fewer thunderstorms. However, occasional cold fronts can bring strong winds and cooler temperatures from the south.

Peak Season

The best time to visit Caxias, Brazil, is during the peak season from November to March. This is the warmest time of year, with average temperatures in the mid-80s Fahrenheit (28-30 degrees Celsius). During this season, the city comes alive with activity, and there are many festivals and events to enjoy. One of the most popular events is the Festa Nacional da Uva (National Grape Festival), which is held every year in February. This festival celebrates the region’s wine industry, and there are many activities to enjoy, including wine tastings, grape stomping, and live music.

Shoulder Season

The shoulder seasons, April-May and September-October, are also a good time to visit Caxias. The weather is still warm, but there are fewer crowds than during the peak season. This makes it a good time to explore the city’s many attractions, such as the Catedral Metropolitana de Caxias do Sul (Metropolitan Cathedral of Caxias do Sul), the Museu Municipal de Caxias do Sul (Municipal Museum of Caxias do Sul), and the Parque da Festa da Uva (Park of the Grape Festival).

Off-Season

The off-season, June-August, is the coldest time of year in Caxias. Average temperatures are in the mid-50s Fahrenheit (12-15 degrees Celsius). During this time of year, there are fewer tourists, and many businesses close for the season. However, there are still some things to do in Caxias during the off-season, such as visiting the city’s museums and churches or taking a walk through the Parque da Festa da Uva.

Potential and Implementation

Caxias, Brazil boasts significant potential for solar energy development due to its ample sunshine hours and favorable geographical location. The city has witnessed a surge in solar energy installations in recent years, with several solar photovoltaic (PV) plants established. These projects contribute to the city’s renewable energy mix, reducing its dependence on fossil fuels and promoting sustainable practices.

Challenges and Opportunities

While Caxias has made progress in solar energy adoption, challenges remain. Intermittency and variability pose challenges to grid integration, requiring energy storage solutions or a combination with other renewable sources. Furthermore, land acquisition and competition for space with other land uses can hinder the expansion of solar PV plants. However, these challenges also present opportunities for research, technological advancements, and innovative land-use planning.

Topography of Caxias, Brazil

Caxias, located in the state of Maranhão, Brazil, is characterized by a diverse and captivating topography. The city lies within the Parnaíba River Basin, which is renowned for its vast and meandering rivers, including the Parnaíba River. The city’s topography is influenced by the presence of the Serra da Ibiapaba, a mountain range that runs along the western border of the municipality. The elevation of Caxias ranges from sea level at the Parnaíba River to over 1,000 meters (3,280 feet) in the Serra da Ibiapaba. The surrounding landscape is composed of rolling hills, plateaus, and valleys, creating a picturesque and visually appealing environment.

Unique Landforms and Rivers

Caxias is home to several notable landforms and rivers. The Serra da Ibiapaba National Park, located within the municipality, encompasses an extensive area of the Serra da Ibiapaba mountain range. The park protects a vast ecosystem, including dense forests, cascading waterfalls, and scenic cliffs. The Parnaíba River, one of the largest rivers in Brazil, meanders through Caxias, forming stunning riverbanks and providing a vital source of water for the city and surrounding regions. The river also supports a vibrant ecosystem, harboring a diverse array of aquatic life. Other significant rivers in the area include the Itapecuru River and the Mearim River, which contribute to the hydrological network of the region.

Caxias Airport

Caxias Airport (CXJ) is the primary airport serving the city of Caxias, Brazil. It is located in the municipality of Paço do Lumiar, approximately 20 kilometers from the city center. CXJ is operated by Infraero, the government-owned airport authority of Brazil. The airport has one runway, designated 10/28, which is 2,200 meters in length and 45 meters wide. CXJ is equipped with basic facilities for passengers, including a check-in area, baggage claim, and a small waiting area.

Other Nearby Airports

In addition to Caxias Airport, there are several other airports located within a reasonable distance of the city. The nearest airport to Caxias is São Luís International Airport (SLZ), which is located in the city of São Luís, the capital of Maranhão state. SLZ is approximately 100 kilometers from Caxias and is the largest airport in the region. It is served by several major airlines and offers flights to destinations throughout Brazil and internationally. Another nearby airport is Imperatriz Airport (IMP), which is located in the city of Imperatriz, approximately 250 kilometers from Caxias. IMP is a smaller airport but is still served by several regional airlines, offering flights to major cities in Brazil.

Geography and History

Caxias, located in the northeastern Brazilian state of Maranhão, is a historic and picturesque city situated on the banks of the Itapecuru River. Founded in 1760, Caxias played a significant role in Maranhão’s independence and was an important center for agricultural and commercial activities during the 19th century. The city is renowned for its well-preserved colonial architecture, featuring grand mansions, churches, and public buildings. Among its notable landmarks are the Catedral Metropolitana de São José do Ribamar, a splendid example of neoclassical design, and the Ponte Metálica, an iconic iron bridge built by the British in 1875.

Culture and Economy

Caxias is a vibrant cultural hub, hosting a variety of festivals and events throughout the year. The Festa de São João, held in June, is a lively celebration featuring traditional music, dance, and fireworks. The city is also home to several museums, including the Museu Municipal de Caxias and the Museu Histórico de Caxias, which showcase the region’s rich history and cultural heritage. Caxias’ economy is primarily driven by agriculture, with a focus on livestock, rice, and soybeans. The city is also a center for commerce and tourism, benefiting from its historic charms and proximity to the capital city of São Luís.