Barreiras Climate & Monthly Temperature Overview – Brazil

Hot and Humid Climate

Barreiras experiences a tropical savanna climate, characterized by hot temperatures and significant rainfall throughout the year. The city has an average annual temperature of around 27°C (80°F), with little seasonal variation. Temperatures routinely reach the mid or high 30°Cs (90s°Fs) during the day, dropping to the mid-20°Cs (70s°Fs) at night. Barreiras is known for its high humidity levels, which can make the heat feel even more oppressive.

Wet and Dry Seasons

The city has two distinct seasons: a wet season and a dry season. The rainy season typically lasts from October to April, bringing heavy rainfall and frequent thunderstorms. During this season, Barreiras receives an average of around 1,200 millimeters (47 inches) of precipitation. The dry season, which spans May to September, is characterized by much lower rainfall and drier conditions. During this period, the city may experience sporadic showers, but the overall climate is pleasant and sunny.

Annual Average Temperature

Barreiras, a city in the northeastern region of Brazil, experiences a tropical savanna climate. The annual average temperature hovers around 27°C (81°F), with relatively small seasonal variations. Temperatures remain consistently high throughout the year, with the warmest months being from September to December, when they can reach up to 30°C (86°F). January is the hottest month, with an average temperature of 28°C (82°F). The coldest months are from May to July, with average temperatures dropping to around 25°C (77°F).

Seasonal Variations

Barreiras experiences two distinct seasons: a wet season and a dry season. The wet season, which runs from October to April, brings heavy rainfall, with monthly precipitation often exceeding 100 mm (4 inches). During this period, temperatures tend to be slightly lower, with average highs in the mid-to-high 20s Celsius (70s to low 80s Fahrenheit). The dry season, from May to September, is characterized by much less rainfall and higher temperatures. Average highs during this period can reach into the low 30s Celsius (upper 80s Fahrenheit). The transition between seasons is often marked by a period of intense thunderstorms.

Cloud Cover in Barreiras, Brazil

Barreiras, a city in northeastern Brazil, experiences a tropical climate characterized by high temperatures and abundant rainfall year-round. The variation in cloud cover throughout the year influences these climatic conditions. During the rainy season from November to April, thick and persistent cloud cover prevails, blocking sunlight and contributing to the heavy precipitation. These clouds are associated with the Intertropical Convergence Zone (ITCZ), a band of low pressure where the trade winds from the northern and southern hemispheres converge.

In contrast, during the dry season (May to October), cloud cover in Barreiras significantly diminishes. The ITCZ shifts southward, reducing the frequency and intensity of rainfall. Clear skies and ample sunshine dominate this period, resulting in lower humidity and less frequent cloud formations. The transition between the rainy and dry seasons is gradual, with cloud cover gradually increasing or decreasing over weeks. The presence or absence of clouds has a significant impact on Barreiras’ daily weather conditions, affecting temperature, humidity, and precipitation patterns.

Seasonal Distribution of Precipitation

Barreiras experiences a distinct seasonal distribution of precipitation, influenced by its location in the northeastern region of Brazil and the Intertropical Convergence Zone (ITCZ). The wet season typically extends from October to April, coinciding with the southward movement of the ITCZ. During this period, heavy rainfall is common, with monthly averages often exceeding 250 mm. In contrast, the dry season lasts from May to September, characterized by significantly reduced precipitation. Monthly rainfall during these months is typically below 100 mm, leading to arid conditions and increased risk of drought.

Influence of the Atlantic Ocean

The proximity of Barreiras to the Atlantic Ocean also plays a significant role in its precipitation patterns. Moist air from the ocean is often drawn inland by prevailing easterly winds, resulting in increased rainfall along the coastal region. This influence is particularly pronounced during the wet season when the ITCZ is active and moisture-laden air is advected towards the city. The Atlantic Ocean also influences the timing and duration of the dry season. When the ITCZ shifts northward during the austral winter, the influx of moisture from the ocean is reduced, leading to the onset of drier conditions.

Annual Rainfall Variability
Barreiras, Brazil experiences significant annual rainfall variability, with a distinct wet season from November to April and a dry season from May to October. During the wet season, rainfall is abundant, with an average of over 200 millimeters per month. In contrast, the dry season is characterized by much lower rainfall, often below 50 millimeters per month. This pronounced seasonality influences the local ecology and agricultural practices in Barreiras.

Influence on Vegetation and Agriculture
The sizable rainfall during the wet season supports a diverse vegetation in Barreiras, including cerrado woodlands and gallery forests. These ecosystems provide valuable habitats for a wide range of plant and animal species. Additionally, the abundant rainfall supports agriculture in Barreiras, with soybeans, cotton, and corn being major crops. However, the dry season poses challenges for farmers, requiring irrigation and other water management strategies to ensure crop yields.

Meteorological Conditions Leading to Snowfall

Snowfall in Barreiras, Brazil, is an extremely rare event due to the city’s tropical climate. However, on July 19, 1985, a unique set of weather conditions caused a remarkable snowfall. A cold front from Antarctica made its way into the South American continent, bringing with it plummeting temperatures and a significant amount of moisture. As the cold front moved eastward, it encountered warm, humid air from the Amazon rainforest, creating the necessary conditions for snow formation.

Impact and Significance

The snowfall in Barreiras was a short-lived but impactful event. It covered the city and surrounding areas in a thin layer of snow, melting within a few hours. While the snowfall had no significant impact on infrastructure or daily life, it became a historical anecdote and a testament to the unpredictable nature of weather patterns. The event inspired local folklore and continues to be recalled as a local curiosity.

Sun’s Position and Intensity

Barreiras, Brazil, experiences abundant sunshine throughout the year due to its proximity to the equator. The sun’s highest point in the sky occurs around noon, when it reaches its zenith. During the summer months (December to February), the sun’s intensity is at its peak, with average daytime temperatures reaching the low to mid-30s Celsius (low to mid-90s Fahrenheit). The city receives over 3,000 sunshine hours annually, providing ample opportunity for outdoor activities and sunbathing.

Impact on Local Climate and Ecosystems

The abundance of sunlight in Barreiras has a significant impact on the local climate and ecosystems. The solar energy heats the land and atmosphere, contributing to the city’s warm and humid subtropical climate. The intense sunlight promotes plant growth and supports a diverse range of vegetation, including lush rainforests and vast savannas. The city’s surrounding ecosystems benefit from the high levels of photosynthetic activity, which provides food and shelter for various animal species. However, the prolonged exposure to strong solar radiation can also lead to skin damage and heat-related illnesses in humans.

Appearance and Visibility

The Moon’s appearance and visibility in Barreiras, Brazil are influenced by its position in the sky, which varies over the course of a month. During the full moon phase, the Moon appears as a complete circle and is visible throughout the night. As the Moon transitions through its waning phases, it becomes progressively less visible, appearing as a crescent or gibbous. The Moon’s visibility is also affected by factors such as cloud cover and light pollution. In Barreiras, cloud cover can occasionally obscure the Moon’s view, while light pollution from urban areas can make it more difficult to see the Moon’s fainter phases.

Cultural and Traditional Significance

The Moon has cultural and traditional significance in the lives of many people in Barreiras. The lunar calendar, based on the phases of the Moon, has been used for centuries to guide agricultural practices, religious observances, and other cultural events. In some rural areas, farmers consult the Moon’s cycles to determine the best time to plant crops or harvest. The Moon also plays a role in local folklore and beliefs, with many stories and superstitions associated with its phases and movements. For example, some believe that a full moon can bring strength and protection, while a new moon can symbolize new beginnings and transitions.

Seasonal Variations in Humidity

In Barreiras, Brazil, humidity levels fluctuate significantly throughout the year, influenced by seasonal rainfall patterns. During the rainy season, which typically lasts from October to April, average humidity levels remain high, often exceeding 80%. The humid atmosphere is a result of frequent rainfall and high evaporation rates, creating a moist and often oppressive environment.

Conversely, during the dry season from May to September, humidity levels drop considerably. As rainfall decreases, the humidity often falls below 60%, resulting in a drier and more comfortable climate. The lower humidity facilitates evaporation, leading to a cooler and less sticky atmosphere.

Impacts of Humidity

The varying humidity levels in Barreiras have noticeable impacts on the daily lives of its residents and visitors. During the rainy season, the high humidity levels can contribute to feelings of discomfort, especially during periods of intense heat. The saturated atmosphere can inhibit the evaporation of sweat, making it more challenging to regulate body temperature. Additionally, high humidity can exacerbate respiratory conditions such as asthma and allergies.

In contrast, the lower humidity during the dry season provides respite from the oppressive conditions of the rainy months. The drier climate allows for easier evaporation, promoting a cooler and more pleasant outdoor environment. However, prolonged periods of low humidity can also lead to skin and respiratory dryness, requiring extra precautions to maintain hydration.

Wind Climate

Barreiras, Brazil, experiences a tropical savanna climate with distinct wet and dry seasons. The wind regime in Barreiras is primarily driven by the South Atlantic Convergence Zone (SACZ), a meteorological feature that brings moisture from the Atlantic Ocean. During the wet season (October to April), the SACZ shifts southward, bringing abundant rainfall and southeasterly trade winds to Barreiras. These winds typically range in speed from 6 to 10 knots (11 to 18 km/h).

Seasonal Variability

During the dry season (May to September), the SACZ retreats northward, resulting in a shift in the wind direction. Northeast trade winds become dominant, bringing drier air and slightly higher wind speeds. These winds often gust between 8 and 12 knots (15 to 22 km/h). The transition between seasons is characterized by variable wind patterns, with occasional strong gusts associated with thunderstorms.

Dry Season

The dry season in Barreiras, Brazil, typically runs from April to September. During this time, the weather is generally hot and sunny, with little to no rainfall. This is an ideal time to visit for those who prefer warm weather and clear skies. However, it’s important to note that temperatures during the dry season can reach as high as 40 degrees Celsius (104 degrees Fahrenheit), so it’s essential to stay hydrated and wear sunscreen when venturing outdoors.

Wet Season

The wet season in Barreiras lasts from October to March. During this period, the city experiences frequent rainfall, resulting in lush green landscapes and abundant vegetation. Although the wet season can bring some refreshing respite from the heat, it’s important to be aware of potential flooding and mudslides. If you plan to visit during the wet season, be prepared for unpredictable weather conditions and pack accordingly. Additionally, the high humidity levels during this time can make outdoor activities less comfortable for some travelers.

Potential for Solar Energy in Barreiras

Barreiras, Brazil, boasts immense potential for solar energy development due to its favorable geographical location. Situated in the northeastern region of the country, Barreiras experiences high levels of solar radiation throughout the year, with an average of over 5 kWh/m2 per day. This abundance of sunlight makes the city an ideal candidate for large-scale solar projects. The region’s low population density and vast expanses of undeveloped land further enhance its suitability for solar energy exploitation.

Current Developments and Future Outlook

Several solar projects are already underway in Barreiras, including one of the largest photovoltaic power plants in Brazil. This plant, known as the Barreiras Solar Complex, has a total installed capacity of 1.4 GW and is expected to generate approximately 2.5 TWh of electricity annually. The project is part of the Brazilian government’s ambitious renewable energy goals, which aim to increase the share of renewable sources in the country’s electricity mix to 35% by 2030. With continued government support and investment, Barreiras is well-positioned to become a hub for solar energy production in Brazil and contribute significantly to the country’s clean energy future.

General Topography

Barreiras, Brazil is situated in the central-western part of the country, in the state of Bahia. The city lies in a region known as Planalto Central (Central Plateau), which is characterized by gently rolling hills and plateaus. The elevation of the city ranges from 300 to 600 meters above sea level.

Relief and Soil

The topography of Barreiras is primarily composed of vast tablelands (plateaus) and shallow valleys. The tablelands are formed by sedimentary rocks and are interspersed with areas of lowlands and flat plains. The soils in the region are predominantly clay and sandy loam, which are suitable for agriculture. The area is drained by several rivers, including the São Francisco River, which flows through the western part of the municipality.

Barreiras Airport (BRA)

Barreiras Airport (IATA: BRA, ICAO: SBBX), officially Aeroporto de Barreiras Benedito de Carvalho, is the main airport serving the city of Barreiras, Bahia, Brazil. It is named after Benedito de Carvalho, a local politician and businessman. The airport is operated by Infraero.

Barreiras Airport is located 1.5 km (0.9 mi) from the city center. It has a single runway, designated 06/24, which is 1,650 m (5,413 ft) long and 30 m (98 ft) wide. The airport has a passenger terminal with an area of 4,000 m2 (43,000 sq ft). The terminal has four check-in counters, four boarding gates, and a baggage claim area. The airport also has a cargo terminal with an area of 2,000 m2 (21,500 sq ft). Barreiras Airport is connected to the city center by a bus service.

Nearest airports

The nearest airport to Barreiras Airport is:

• Petrolina Airport (PWN): Located 490 km (304 mi) northeast of Barreiras.

Geography and Economy

Barreiras is a municipality in the western part of the state of Bahia, Brazil. It is the third most populous city in Bahia, with a population of over 150,000 people. The city is located on the banks of the São Francisco River and is a major center for agriculture, livestock, and tourism. Barreiras is also home to a number of large hydroelectric dams, which provide power to the region.

History and Culture

Barreiras was founded in 1722 by Portuguese settlers. The city grew rapidly in the 19th century due to the boom in coffee production. In the early 20th century, Barreiras became a major center for livestock production. The city is also known for its rich cultural heritage, which includes a number of historical landmarks and museums. Barreiras is also home to a number of festivals and cultural events throughout the year.