Ourinhos Climate & Monthly Temperature Overview – Brazil


Temperature and Precipitation:

Ourinhos experiences a humid subtropical climate, characterized by warm, wet summers and mild, dry winters. Temperatures range from an average high of 30°C (86°F) in January to a low of 14°C (57°F) in June. Rainfall is abundant throughout the year, with an average annual precipitation of 1,500 mm (60 inches). The wet season lasts from October to March, while the dry season extends from April to September.

Seasonal Variations:

Summer in Ourinhos is typically hot and humid, with frequent thunderstorms and heavy rainfall. Temperatures can reach up to 35°C (95°F) on hot days, accompanied by high humidity levels that can make it feel even warmer. The rainy season brings relief from the heat, but can also lead to flooding in some areas. Winter is generally mild and dry, with temperatures rarely dropping below 10°C (50°F). The occasional cold front can bring a brief period of cooler weather, but temperatures typically recover quickly.

Average Temperature in Ourinhos, Brazil

Ourinhos, Brazil, is a city located in the state of São Paulo. The city has a humid subtropical climate, with hot, humid summers and mild, dry winters. The average temperature in Ourinhos throughout the year is around 22°C (72°F). The city experiences a significant amount of rainfall, with an average of around 1,400 millimeters (55 inches) per year.

The warmest months in Ourinhos are January and February, with average temperatures around 25°C (77°F). The coldest months are June and July, with average temperatures around 18°C (64°F). The city experiences a fair amount of sunshine throughout the year, with an average of around 2,500 hours per year.

Overall, Ourinhos has a pleasant climate year-round, with warm temperatures and plenty of sunshine. The city’s climate is ideal for outdoor activities and spending time outdoors.

Cloud Characteristics

Ourinhos, Brazil, experiences a diverse range of cloud formations due to its tropical savanna climate. Cumulus clouds prevail during the rainy season (October to May), appearing as puffy and detached masses. During the dry season (June to September), cirrus clouds are common, consisting of wispy, hair-like streaks of ice crystals that form high in the atmosphere. Stratus clouds, characterized by a uniform gray layer, often bring overcast conditions, particularly in the afternoons.

Cloud Dynamics

The formation of clouds in Ourinhos is influenced by several factors, including moisture, temperature, and atmospheric instability. The convergence of warm, moist air from the Atlantic Ocean along with unstable conditions creates the ideal environment for cumulus clouds to develop. Conversely, stable conditions during the dry season limit cloud formation, resulting in clear skies. The presence of hills and mountains around Ourinhos also plays a role, as they can cause clouds to form and dissipate as moist air moves through the topography.

Annual Precipitation Patterns

Ourinhos, a city in southern Brazil, experiences a humid subtropical climate with distinct wet and dry seasons. The annual precipitation total in Ourinhos is approximately 1,400 millimeters (55 inches), with significant variations throughout the year.

During the wet season, which typically spans from October to March, rainfall is abundant and frequent. The city receives an average of 100-150 millimeters (4-6 inches) of precipitation per month during this period. January is typically the wettest month, with an average rainfall of over 200 millimeters (8 inches). In contrast, the dry season from April to September is characterized by reduced rainfall, with monthly totals often below 50 millimeters (2 inches). July and August are typically the driest months, with average rainfall of less than 25 millimeters (1 inch) each.

Seasonal Precipitation Distribution

The seasonal distribution of precipitation in Ourinhos is strongly influenced by the movement of the Intertropical Convergence Zone (ITCZ), a band of low atmospheric pressure that brings heavy rainfall to areas near the equator. During the wet season, the ITCZ shifts southward over Ourinhos, resulting in frequent thunderstorms and heavy rainfall. As the ITCZ moves northward during the dry season, Ourinhos experiences drier conditions, with more stable atmospheric conditions. In addition to the influence of the ITCZ, precipitation in Ourinhos can also be affected by local factors such as topography and elevation.

Seasonal Patterns

Ourinhos, Brazil, experiences distinct seasonal patterns in rainfall. The wet season typically extends from October to March, with peak rainfall occurring during the summer months of December through February. During this period, heavy downpours and thunderstorms are common. In contrast, the dry season runs from April to September, characterized by significantly less rainfall. These seasonal variations are influenced by the movement of the Intertropical Convergence Zone (ITCZ) and the associated atmospheric circulation patterns.

Long-Term Trends

Over the past several decades, Ourinhos has witnessed a gradual increase in annual rainfall. This trend is consistent with observations of a wider regional pattern of increasing precipitation over southern and southeastern Brazil. The rising temperatures associated with climate change are believed to be a contributing factor, as warmer air holds and releases more moisture. Additionally, changes in land use and land cover in the surrounding area may have also influenced local rainfall patterns.

Historical Snowfall in Ourinhos

On July 25th, 2021, the city of Ourinhos, located in the southeastern Brazilian state of São Paulo, witnessed an extraordinary meteorological event: snowfall. This phenomenon, unprecedented in the city’s recorded history, occurred due to a rare combination of low temperatures, moisture, and a cold front that originated from the Antarctic. The snowfall lasted for approximately 20 minutes, covering the streets and buildings in a thin layer of white.

The snowfall in Ourinhos garnered significant media attention and astonishment among the local population, as snow is an extremely rare occurrence in Brazil, particularly in its southern and southeastern regions. The event sparked excitement and wonder in the community, with residents capturing photos and videos of the snowy landscape and sharing them widely on social media. The snowfall also prompted scientific investigations into the unusual weather conditions that led to its formation.

Sunrise and Sunset Times

In Ourinhos, Brazil, the sun rises and sets at different times throughout the year due to the Earth’s changing position in its orbit around the sun and the city’s latitude. The earliest sunrise occurs around 5:50 AM during the summer months, while the latest sunrise occurs around 6:50 AM in the winter. Similarly, the earliest sunset occurs around 6:30 PM in the summer, and the latest sunset occurs around 5:30 PM in the winter.

Seasonal Variations

The length of the day in Ourinhos varies significantly throughout the year due to the city’s location in the Southern Hemisphere. The longest day occurs on December 21st, with approximately 14 hours and 20 minutes of daylight. The shortest day occurs on June 21st, with only about 10 hours and 50 minutes of daylight. During the summer months, December through February, Ourinhos experiences long, sunny days with temperatures often reaching into the mid-80s Fahrenheit (30s Celsius). In the winter months, June through August, the city experiences shorter days with cooler temperatures, typically ranging from the mid-50s to low 60s Fahrenheit (13-18 Celsius).

Moon Visibility in Ourinhos, Brazil

Ourinhos, Brazil, located in the state of São Paulo, offers prime conditions for moon observation due to its clear skies and low light pollution. The full moon is a particularly impressive sight, appearing as a glowing celestial orb against the inky backdrop of the night sky. During the full moon phase, the entire face of the moon is illuminated by sunlight, creating a spectacular spectacle that can be enjoyed with the naked eye or through binoculars or a telescope.

Moon Phases and Observation Tips

Throughout the lunar cycle, the moon’s appearance changes as it orbits the Earth. The new moon phase, when the moon is not visible from Earth, is followed by the waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, waning crescent, and back to the new moon. The best time to observe the moon is during the full moon phase, when it is brightest and easiest to see. For optimal viewing, find an open area with a clear view of the sky, away from bright lights. Using binoculars or a telescope can enhance the experience, allowing you to explore the moon’s craters, mountains, and other features.

Humidity in Ourinhos, Brazil

Ourinhos, a city in the southeastern region of Brazil, experiences a subtropical humid climate. The average humidity levels throughout the year are consistently high, often hovering around 80%. The city’s proximity to the Atlantic Ocean and the Amazon rainforest contributes to the high moisture content in the air. During the summer months, from December to February, humidity levels can reach up to 90%, creating a蒸し暑い and uncomfortable atmosphere.

The high humidity in Ourinhos can have several impacts on the city’s residents and environment. The moisture-rich air can lead to increased heat discomfort, as the body struggles to cool down through evaporation of sweat. Prolonged exposure to high humidity can also exacerbate respiratory ailments such as asthma and allergies. Additionally, the humid environment can promote mold growth and deterioration of buildings and infrastructure. Despite the challenges it poses, the high humidity in Ourinhos is also essential for the city’s lush greenery and abundant rainfall, which support the local economy and agriculture.

Wind Patterns in Ourinhos, Brazil

Ourinhos, Brazil experiences distinct wind patterns throughout the year, influenced by its location within the transition zone between sub-tropical and tropical climate zones. During the summer months (December to March), the predominant winds are southeasterly, membawa moisture from the Atlantic Ocean. These winds are often associated with heavy rainfall and occasional thunderstorms. As the year progresses into the cooler months (June to September), the winds shift to a more northerly direction, bringing drier air from the interior of the continent. These conditions favor clear skies and lower humidity.

Wind Speed and Variability

The average wind speed in Ourinhos ranges from 2 to 5 meters per second (4-11 miles per hour), with higher speeds occurring during the summer months. The wind speed can vary considerably depending on the season and weather conditions, with occasional gusts exceeding 10 meters per second (22 miles per hour). Strong winds are most common during the spring and summer, when thunderstorms and squall lines pass through the area. Overall, the wind in Ourinhos is relatively mild and does not pose significant challenges for outdoor activities or infrastructure.

Best Time to Visit Ourinhos, Brazil: Climate and Events

Ourinhos experiences a tropical monsoon climate, characterized by high temperatures and abundant rainfall throughout the year. The hottest months are December to March, with average temperatures ranging from 24 to 30 degrees Celsius (75 to 86 degrees Fahrenheit). During this period, humidity is also high, leading to a muggy and uncomfortable atmosphere.

The best time to visit Ourinhos is during the shoulder seasons, from April to May and September to October. During these months, the weather is still warm and sunny, but the temperatures are more moderate, averaging between 20 and 28 degrees Celsius (68 to 82 degrees Fahrenheit). Humidity is also lower, making it more comfortable to explore the city.

Cultural Events and Festivals

Ourinhos hosts several cultural events and festivals throughout the year. One of the most popular is the “Arraial de São João,” an annual festival celebrated from June 23rd to 29th. The festival features live music, traditional dances, and food stalls selling typical Brazilian dishes. Another highlight is the “Festa do Peão de Barretos,” a rodeo festival held in August that attracts over a million visitors annually. For art enthusiasts, the “Encontro de Artes Visuais de Ourinhos” (Visual Arts Encounter of Ourinhos) showcases works by local and national artists in September.

Solar Irradiance and Potential
Ourinhos, Brazil, enjoys abundant solar irradiance, with an average of 5.2 kWh/m²/day throughout the year. This favorable solar resource makes it an ideal location for harnessing solar energy, offering a significant potential for renewable electricity generation. The municipality has a total area of approximately 300 square kilometers, providing ample space for solar photovoltaic (PV) installations.

Implementation and Benefits
Recognizing the potential of solar energy, the municipality has taken steps to promote the installation of solar PV systems. Through policies and incentives, Ourinhos has encouraged the adoption of rooftop PV systems on residential and commercial buildings. Several large-scale solar farms have also been established in the area, further contributing to the growth of solar energy generation. These installations not only reduce the municipality’s reliance on fossil fuels but also contribute to economic development and job creation within the renewable energy sector.

Geographic Location and Regional Topography

Ourinhos is a city situated in the southeastern region of Brazil, within the state of São Paulo. It occupies an area of approximately 300 square kilometers and lies at an elevation of 480 meters above sea level. The municipality is characterized by a gently undulating topography, with several small hills and valleys interspersed throughout the landscape. The surrounding region is gently rolling, with scattered pockets of forested areas and open fields.

Watersheds and River Systems

Ourinhos is drained by the Paranapanema River, which forms the municipality’s northern boundary and serves as a major waterway for the region. The river flows in a generally east-west direction and receives several smaller tributaries within the Ourinhos area. The municipality also contains numerous smaller creeks and streams that contribute to the overall drainage system. These watercourses have played a significant role in shaping the topography of the region, creating a network of valleys and ravines that provide natural drainage channels.

Nearest Airport: Marilia Airport

The closest airport to Ourinhos, Brazil, is Marilia Airport (MII), located approximately 20 kilometers (12 miles) southwest of the city center. Marilia Airport serves the city of Marilia and the surrounding region, offering domestic flights to São Paulo and Brasília, as well as international flights to Montevideo, Uruguay. It has a modern passenger terminal with amenities such as duty-free shops, restaurants, and currency exchange services.

Other Nearby Airports

While Marilia Airport is the nearest option, there are several other airports within a reasonable driving distance of Ourinhos:

  • Assis Airport (AQT): Located approximately 40 kilometers (25 miles) southwest of Ourinhos, Assis Airport offers domestic flights to São Paulo and Curitiba.
  • Bauru Airport (BAU): Situated approximately 70 kilometers (43 miles) southeast of Ourinhos, Bauru Airport offers domestic flights to São Paulo, Brasília, and Recife.
  • Londrina Airport (LDB): Approximately 120 kilometers (75 miles) northwest of Ourinhos, Londrina Airport is a regional hub with domestic flights to major cities in Brazil, including São Paulo, Rio de Janeiro, and Curitiba.

Geography and Climate

Ourinhos is a municipality located in the state of São Paulo, Brazil. It is situated in the central-eastern part of the state, approximately 340 kilometers northwest of the city of São Paulo. Ourinhos occupies an area of 294.9 square kilometers and has a population of around 115,000 inhabitants. The municipality is characterized by its rolling hills, vast agricultural lands, and abundant water resources. The climate in Ourinhos is tropical, with hot, humid summers and mild, dry winters. The average temperature throughout the year is around 22 degrees Celsius, with rainfall concentrated during the summer months.

Economy and Infrastructure

Ourinhos has a strong agricultural economy, with sugarcane, coffee, and citrus fruits being the primary crops. The municipality is also home to a significant industrial sector, with a focus on textiles, apparel, and food processing. In recent years, the city has also seen growth in the tourism sector, thanks to its natural attractions and historical landmarks. Ourinhos boasts a well-developed infrastructure, including an extensive road network, a public transportation system, and a modern hospital. The city is also home to several higher education institutions, including the State University of São Paulo (UNESP) and the Federal Institute of São Paulo (IFSP).