Last updated: August 21, 2025
September in Campinas, Brazil offers a vibrant transition into spring, with temperatures ranging from a chilly 9°C (49°F) at night to a toasty maximum of 36°C (98°F) during the day, averaging a pleasant 22°C (72°F). The month experiences approximately 37 mm (1.5 in) of rainfall spread over 6 days, keeping the region lush and inviting. Humidity hovers around 58%, adding a touch of tropical essence to the air. This delightful blend of warmth and moisture sets the perfect backdrop for outdoor activities and exploration.
In September, Campinas, Brazil, experiences a delightful transition as the temperatures begin to warm up, signaling the arrival of the spring season. The minimum temperature hovers around a mild 9°C (49°F), while the average reaches a pleasant 22°C (72°F), perfect for outdoor activities. As the month progresses, the maximum temperature can soar up to a sizzling 36°C (98°F), showcasing a significant increase compared to the cooler winter months. This month marks a trend towards warmer weather, with a steady rise from the average highs of the previous months, setting the stage for more inviting days ahead. Whether you're exploring the vibrant city or enjoying nature, September offers a balance of comfortable warmth and occasional heat, making it an ideal time to experience the beauty of Campinas.
In September, Campinas, Brazil, experiences a noticeable shift in precipitation patterns as the dry winter months give way to the more humid spring season. With a total rainfall of 37 mm (1.5 in) over 6 days, September marks a slight increase compared to the preceding months, although it's relatively moderate compared to earlier months like January and February. This uptick in moisture hints at the onset of a wetter period ahead, as the city prepares for the more substantial rains forecasted in October and November, which typically bring 110 mm (4.3 in) and 137 mm (5.4 in), respectively. As the days shorten and temperatures begin to rise, the gradual transition into the rainy season becomes evident, setting the stage for a vibrant landscape ahead.
As the seasons transition, September in Campinas, Brazil, marks a notable dip in humidity levels, averaging 58%. This reduction follows a gradual decline from the sweltering highs of 88% in January and February, showcasing a significant shift toward a more comfortable atmosphere. The trend hints at approaching dryness, with humidity reaching its lowest point of the year by October at 50%. This steady decrease illustrates a delightful escape from the oppressive summer mugginess, inviting residents and visitors alike to enjoy the invigorating change as the region transitions into spring.
In September, Campinas, Brazil, experiences a UV Index of 11, maintaining an extreme exposure category with a burn time of just 10 minutes. This marks a slight increase from the previous months, as both May and August recorded very high levels with lower indices of 8 and 9, respectively. The UV Index consistently trends upwards as the year progresses, with the highest values peaking at 16 in the summer months of January and February. As September transitions toward the more intense spring months, it's crucial for residents and visitors to be vigilant about sun protection. For more in-depth information on UV levels, visit Campinas UV Index.
UV Risk Categories
September in Campinas, Brazil, shines brightly with an impressive 310 hours of sunshine, standing out as one of the sunniest months in the year. As the city transitions from the cooler winter months of June and July, which logged 274 and 306 hours respectively, the sunshine steadily increases, culminating in a splendid early spring. This rise in solar warmth continues into October with 297 hours, showcasing a comforting consistency as daylight lingers longer. Overall, the trend throughout the year reveals a pattern where sunny days peak between March and December, with September cementing itself as a key highlight that heralds the vibrant energy of spring.
In Campinas, Brazil, September brings a notable shift in weather patterns, with a 59% chance of sunny days. This places it among the more favorable months for sunshine, following the peak of July (68%) and August (62%). As winter gives way to spring, the likelihood of basking in the sun begins to stabilize after the colder months, where chances hovered around the mid-50% range. Although October sees a drop to 27%, September still offers a pleasant window of sunshine, making it an ideal time for outdoor activities and enjoying the blossoming landscapes.
As September arrives in Campinas, Brazil, residents enjoy 11 hours of daylight, a balance between the longer days of January and the shorter days of May. This month marks a subtle transition, as daylight duration begins to increase again, reaching 12 hours by October and signaling the approach of the sunny summer months. Interestingly, the daylight hours have a distinct rhythm, peaking at 13 hours in January and November, while settling into a cozy pattern of 10 hours through the winter months. As the year progresses, these natural changes not only capture the beauty of the seasons but also invite people to revel in outdoor activities as sunlight slowly returns.
As September arrives in Campinas, Brazil, the winds begin to pick up their pace, reaching an average speed of 3.4 m/s (8 mph), a trend that mirrors the increasingly brisk conditions of August. This noticeable increase reflects a shift in the seasonal dynamics, as the city transitions into a more invigorating atmosphere. Following a slower summer breeze, which lingered around 2.4 to 2.5 m/s in the preceding months, September ushers in a refreshing vigor that foreshadows the stronger winds of October and November. This gradual escalation sets a spirited tone for outdoor activities, offering a delightful contrast to the calmer summer days and inviting both locals and visitors to embrace the refreshing gusts that usher in the heart of spring.
Weather in Campinas varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Campinas, focusing on differences in temperature, rainfall, humidity, and UV levels.
When comparing the weather in September and January, notable differences emerge. September experiences a broader temperature range, with minimums of 9°C (49°F) and maximums soaring up to 36°C (98°F), while averaging 22°C (72°F). In contrast, January presents a milder climate, with minimums around 14°C (58°F) and maximums reaching 35°C (96°F), yielding a slightly higher average of 24°C (75°F). Precipitation levels also differ significantly, as September sees only 37 mm (1.5 in) over six days, whereas January is marked by much heavier rain, accumulating 188 mm (7.4 in) over 18 days. Additionally, humidity is notably higher in January at 88%, compared to September's 58%. For a more detailed breakdown, check out Campinas weather in January.
September and February present quite contrasting weather patterns. In September, temperatures range from a minimum of 9°C (49°F) to a maximum of 36°C (98°F), averaging around 22°C (72°F). The month typically experiences about 37 mm (1.5 in) of precipitation over roughly six days, with humidity averaging 58%. In comparison, February boasts warmer temperatures, with a minimum of 16°C (61°F) and a maximum of 37°C (99°F), averaging 24°C (75°F). However, it is significantly wetter, receiving 173 mm (6.8 in) of rain across about 15 days, and the humidity level rises to 88%. For more detailed information, check out Campinas weather in February.
When comparing the weather in September and March, notable differences emerge. September typically sees a range of temperatures from a cool minimum of 9°C (49°F) to a warm maximum of 36°C (98°F), with an average of 22°C (72°F). The month experiences relatively low precipitation, totaling 37 mm (1.5 in) over about 6 days, and the humidity averages around 58%. In contrast, March presents a milder climate, with minimum temperatures starting at 15°C (59°F) and maximums reaching 34°C (94°F), averaging 24°C (75°F). However, this month brings significantly more rain, with 111 mm (4.4 in) falling over 14 days, resulting in higher humidity levels of 87%. For more details, you can check Campinas weather in March.
In September, the weather features a wider temperature range, with a minimum of 9°C (49°F) and a maximum reaching up to 36°C (98°F), averaging 22°C (72°F). The month experiences relatively low humidity at 58%, along with 37 mm (1.5 in) of precipitation over 6 days. In contrast, April sees slightly warmer temperatures, with a minimum of 12°C (53°F) and a maximum of 33°C (91°F), maintaining a similar average of 22°C (71°F). It also boasts higher humidity at 84% and increased precipitation of 48 mm (1.9 in) over just 5 days. For more detailed information, check out the Campinas weather in April.
September and May present distinct climates in terms of temperature, precipitation, and humidity. In September, the temperatures range from a minimum of 9°C (49°F) to a maximum of 36°C (98°F), with an average of 22°C (72°F), making it generally warmer than May. In contrast, May experiences cooler temperatures, with a minimum of 3°C (38°F), an average of 19°C (67°F), and a maximum of 32°C (90°F). Precipitation in September is slightly lower at 37 mm (1.5 in) over 6 days compared to May's 44 mm (1.7 in) occurring over just 4 days. Additionally, May sees higher humidity levels at 79%, compared to September's 58%. For more detailed information, you can visit Campinas weather in May.
In comparison to June, September showcases a notable increase in temperature, with average highs reaching up to 36°C (98°F), while June's temperatures peak at 29°C (84°F). The minimum temperatures are also slightly warmer in September, averaging 9°C (49°F) compared to June's 7°C (45°F). Both months experience similar levels of precipitation, with September recording 37 mm (1.5 in) over 6 days and June slightly lower at 35 mm (1.4 in) over 5 days. However, June has a higher humidity level at 77%, while September's humidity is more moderate at 58%. For more detailed information, check out Campinas weather in June.
In comparing the weather of September and July, September features a wider temperature range with minimums of 9°C (49°F) and maximums reaching 36°C (98°F), averaging around 22°C (72°F). In contrast, July sees cooler temperatures, with a minimum of 2°C (36°F) and a maximum of 30°C (87°F), averaging 18°C (64°F). Notably, September experiences more precipitation, totaling 37 mm (1.5 in) over six days, while July is much drier, with only 14 mm (0.5 in) occurring over just one day. Additionally, September has a lower humidity level of 58% compared to July's 72%. For more details about July weather, visit Campinas weather in July.
September's weather shows a noticeable improvement compared to August, with average temperatures rising from 19°C (66°F) to 22°C (72°F). The minimum temperature in September is slightly higher at 9°C (49°F), while the maximum temperature reaches up to 36°C (98°F), compared to August's 32°C (91°F). However, September experiences less precipitation, totaling 37 mm (1.5 in) over six days, in contrast to August's 50 mm (2.0 in) and also over six days. Humidity is lower in September at 58%, compared to 65% in August, contributing to a drier and warmer feeling as the month progresses. For a detailed look at August's conditions, check out Campinas weather in August.
In comparing the weather of September and October, September experiences a wider temperature range with minimums dropping to 9°C (49°F) and maximums peaking at 36°C (98°F). In contrast, October starts warmer with minimum temperatures at 12°C (54°F) and an increased average across the month at 23°C (73°F), while also hitting a higher maximum of 38°C (101°F). Rainfall also sees a significant increase in October, with total precipitation rising to 110 mm (4.3 in) over 13 days, compared to just 37 mm (1.5 in) over 6 days in September. Additionally, October exhibits lower humidity levels at 50%, making the air feel less sticky than in September, which averages 58% humidity. For more information on specific weather patterns, you can visit Campinas weather in October.
September and November display some notable differences in weather patterns. September typically has a minimum temperature of 9°C (49°F) and can reach up to a scorching 36°C (98°F), with an average temperature steady at 22°C (72°F). Rainfall is relatively low during this month, totaling 37 mm (1.5 in) over approximately 6 days, and humidity hovers around 58%. In contrast, November experiences slightly warmer minimum temperatures at 12°C (53°F) and maintains the same average of 22°C (72°F), with a maximum of 36°C (97°F). However, precipitation rises significantly to 137 mm (5.4 in) over 12 days, leading to higher humidity levels of 75%. For more detailed information, check out Campinas weather in November.
September and December in Campinas showcase notable differences in weather patterns. In September, the temperatures range from a pleasant minimum of 9°C (49°F) to a maximum of 36°C (98°F), with an average of 22°C (72°F). The month experiences relatively low precipitation, totaling 37 mm (1.5 in) over about 6 days, and humidity levels sit at 58%. In contrast, December brings warmer temperatures with a minimum of 13°C (56°F) and an average of 24°C (75°F), reaching highs of 36°C (97°F). The rainfall significantly increases to 150 mm (5.9 in) spread over 18 days, raising humidity to a more oppressive 80%. For more details on December weather, you can check Campinas weather in December.
As September unfolds in Campinas, it marks a notable shift in the weather compared to the preceding months. The temperatures reach a maximum of 36°C, presenting warm and inviting days, while the average temperature settles comfortably at 22°C. Despite these warmer conditions, the transition into spring introduces a slight increase in humidity, hovering around 58%, and occasional rainfall, with approximately six days of precipitation totaling 37 mm. This blend of warmth and moisture creates a refreshing atmosphere, making September a vibrant month in Campinas. For a comprehensive overview of weather trends throughout the year, visit Campinas Climate.