Last updated: August 21, 2025
September in São José dos Campos, Brazil, showcases a vibrant transition into spring, characterized by warm temperatures and moderate humidity. The mercury peaks at a sizzling 35°C (94°F), while the average settles comfortably at 21°C (70°F), providing a pleasant climate for outdoor activities. The nights can be distinctly cooler, dropping to a refreshing 11°C (52°F). Although the month sees 50 mm (2.0 in) of precipitation spread over 6 days, it rarely dampens the spirits of locals and visitors alike. With 58% humidity, September invites an invigorating blend of warmth and refreshing breezes, making it an ideal time to explore the beauty of this dynamic city.
In September, São José dos Campos experiences a delightful transition as temperatures begin to warm up after the cooler winter months. The minimum temperature averages around 11°C (52°F), providing a crisp start to the day, while afternoons boast a maximum reach of 35°C (94°F), ensuring that warm weather enthusiasts can enjoy the sun. With an average temperature of 21°C (70°F), this month strikes a perfect balance between the cooler temperatures of the earlier months and the heat of the approaching summer. As the days grow longer and the climate shifts, September sets the stage for vibrant outdoor activities and the blooming beauty of spring in this picturesque Brazilian city.
In September, São José dos Campos experiences a modest precipitation level of 50 mm (2.0 in), marking a continuation of the mid-year decline in rainfall that starts in June. This amount falls within a pattern where the city sees its lightest rainfall in the winter months, with only 6 rainy days accompanying September's showers. Following the more significant deluge of 161 mm in January, the city transitions to drier months, showcasing a notable drop-off as it approaches the spring. As the weather gradually shifts, September serves as a subtle bridge towards the wetter months ahead, heralding a return to more robust precipitation in October and November. This trend not only highlights the seasonal variability characteristic of the region but also sets the stage for the revitalizing rains that will soon replenish the landscape.
As the year progresses in São José dos Campos, Brazil, September marks a significant drop in humidity, with levels reaching a comfortable 58%. This month stands out as the least humid time of the year, following a gradual decline from the high humidity typical of January, where it averages 88%. The transition from the wet season to drier months is evident, with humidity decreasing steadily from August’s 65% to September's breezy atmosphere. This trend of declining humidity continues into October, hitting a seasonal low of 50%, making September an ideal moment to enjoy the city's outdoor beauty without the suffocating heat and moisture that characterize the earlier months.
In September, Sao Jose dos Campos experiences a UV Index of 12, categorizing it as extreme with a burn time of just 10 minutes. This marks a notable increase from the more tempered conditions of the previous months, reflecting a trend that usually sees UV levels bounce back sharply as spring approaches. Interestingly, the UV Index stays consistently high throughout the year, with January and February topping out at a staggering 16, where exposure is critically dangerous. As we transition from winter to spring, protective measures remain vital, reminding residents and visitors that the sun's potency is something to be respected year-round. For more detailed insights, visit Sao Jose dos Campos UV Index.
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As September unfolds in São José dos Campos, the city basks in a generous 289 hours of sunshine, positioning it as one of the sunniest months of the year. This follows a pattern that sees a gradual increase in daylight from the beginning of the year, culminating in the vibrant light of December with 300 hours. Interestingly, after a slight dip in August, sunshine returns to form in September, signaling the transition into a period where longer days and warmer weather set the stage for outdoor activities. The upward trend in sunshine hours throughout the late winter and early spring months showcases the city's welcoming embrace of sunlight, making September a delightful time to enjoy the natural beauty of the region.
In Sao Jose dos Campos, Brazil, September showcases a notable shift towards more favorable weather, with a 49% chance of sunny days. This increase follows the sunnier months of July and August, which boast chances of 58% and 55%, respectively. As winter recedes, residents and visitors alike can expect a delightful blend of warmth and sunshine, marking a transition into spring. Compared to the dreary early months of the year, where January's sun peeked through only 15% of the time, September stands out as a promising month for outdoor activities and enjoying the beautiful Brazilian landscape. As the year progresses toward the rainy season in October, embracing the shifting weather patterns in September offers a perfect opportunity to relish the sun's embrace before the clouds return.
In São José dos Campos, Brazil, September marks a subtle transition in daylight duration, offering approximately 11 hours of sunlight. As the year unfolds, daylight hours peak in January and November at 13 hours, creating a luminous start and close to the calendar. The months from February through April feature a gradual decrease, hitting a low of 10 hours in May, June, and July, when the shorter days linger. However, as August rolls in, daylight begins to reclaim its presence, setting the stage for September's balanced 11 hours. This cyclical rhythm not only emphasizes the embrace of longer days but also sets a precedent for the approaching spring, inviting warmth and vitality back into the landscape.
As September arrives in São José dos Campos, the winds begin to pick up, signaling a transition from winter to spring. With an average wind speed of 2.4 m/s (5 mph), September boasts the highest wind intensity since August, which itself recorded a notable increase. This upward trend in wind speeds indicates a refreshing change, offering residents a lively breeze as they embrace the changing season. Following a steady rise through the months, with October expected to take the lead at 2.7 m/s (6 mph), September's winds herald a delightful prelude to the more vigorous gusts of the months ahead.
Weather in Sao Jose dos Campos varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sao Jose dos Campos, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present distinct weather patterns in Sao Jose dos Campos. September typically sees mild temperatures ranging from a minimum of 11°C (52°F) to a maximum of 35°C (94°F), with an average of 21°C (70°F) and relatively low precipitation of 50 mm (2.0 in) over just 6 days. In contrast, January is warmer, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 34°C (93°F) and an average of 24°C (75°F). However, it is also significantly wetter, experiencing 161 mm (6.3 in) of rainfall spread over 17 days, contributing to higher humidity levels of 88%. For more detailed insights into January weather, check the link: Sao Jose dos Campos weather in January.
September and February exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 11°C (52°F) to a maximum of 35°C (94°F), with an average of 21°C (70°F). The month experiences relatively low precipitation of 50 mm (2.0 in) over just 6 days and moderate humidity at 58%. In contrast, February features higher minimum temperatures, starting at 16°C (61°F) and peaking at the same maximum of 34°C (94°F), but with a warmer average of 23°C (74°F). February is significantly wetter, with 154 mm (6.0 in) of rain distributed over 17 days, leading to a higher humidity level of 88%. For more detailed insights on February's weather, visit Sao Jose dos Campos weather in February.
When comparing the weather in September and March, notable differences arise in both temperature and precipitation patterns. September tends to be warmer with an average temperature of 21°C (70°F) and maximums reaching up to 35°C (94°F), while March offers slightly milder conditions with an average of 23°C (74°F) and maximums peaking at 33°C (91°F). However, March is significantly wetter, recording about 122 mm (4.8 in) of rain over 15 days, compared to September's more moderate 50 mm (2.0 in) over just 6 days. Additionally, humidity levels are higher in March at 87%, contrasted with September's 58%. For more detailed information, you can check the Sao Jose dos Campos weather in March.
When comparing the weather in September and April, both months exhibit a similar average temperature of 21°C (70°F), creating a comfortable climate. However, September tends to be warmer with maximum temperatures reaching up to 35°C (94°F), while April has slightly cooler maximums at 32°C (89°F). In terms of precipitation, September experiences a total of 50 mm (2.0 in) over approximately 6 days, whereas April has a similar amount of rainfall at 47 mm (1.8 in) but spreads it out over 9 days, leading to a higher humidity of 84%. For a more detailed look at April's weather patterns, you can visit Sao Jose dos Campos weather in April.
September and May exhibit distinct weather patterns in terms of temperature and humidity. September tends to be warmer, with average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 35°C (94°F), while May is cooler, with temperatures ranging from 6°C (42°F) to 30°C (86°F). Both months receive the same amount of precipitation, totaling 50 mm (2.0 in) over approximately six days. However, humidity levels are noticeably different; September has a humidity of 58%, while May experiences a higher humidity of 79%. For a detailed look at the weather in May, check out Sao Jose dos Campos weather in May.
When comparing the weather in September and June, September tends to be warmer with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 35°C (94°F) and an average of 21°C (70°F). In contrast, June features cooler temperatures, with a minimum of 7°C (44°F), an average of 18°C (65°F), and a maximum of 29°C (85°F). Additionally, September experiences slightly more precipitation at 50 mm (2.0 in) over 6 days, while June sees 35 mm (1.4 in) over just 5 days, despite its higher humidity at 77% compared to September's 58%. For further details, you can check Sao Jose dos Campos weather in June.
In comparing the weather of September and July, September showcases a more diverse temperature range, with minimums around 11°C (52°F) and maximums reaching up to 35°C (94°F), making for an average of 21°C (70°F). In contrast, July maintains cooler temperatures, with a minimum of 3°C (37°F) and a maximum of 29°C (85°F), averaging just 17°C (62°F). Precipitation levels are also higher in September, with 50 mm (2.0 in) spread over six days, compared to July's milder 21 mm (0.8 in) over three days. Additionally, September is less humid at 58%, while July experiences higher humidity at 72%. For more detailed insights into July's weather, you can refer to Sao Jose dos Campos weather in July.
September weather shows a notable increase in temperature compared to August, with minimums rising from 3°C to 11°C and averages moving from 18°C to 21°C. Additionally, the maximum temperature in September can reach as high as 35°C, while August peaks at 32°C. Despite September's slightly higher average precipitation of 50 mm over 6 days, the humidity remains somewhat lower at 58%, compared to August’s 65%. For a more detailed breakdown of August weather, you can visit Sao Jose dos Campos weather in August.
In September, the weather in Sao Jose dos Campos typically features temperatures ranging from a minimum of 11°C (52°F) to a maximum of 35°C (94°F), with an average temperature of 21°C (70°F). The month is characterized by relatively low precipitation, totaling around 50 mm (2.0 in) over just 6 days, while humidity averages 58%. In contrast, October sees a slight increase in both temperature and precipitation. The minimum temperature remains the same at 11°C (52°F), but the maximum reaches 36°C (98°F), with an average temperature of 21°C (71°F). Notably, October experiences a significant rise in rainfall, with 120 mm (4.7 in) over 15 days, and lower humidity at 50%. For more details, check out the full forecast here: Sao Jose dos Campos weather in October.
In comparing September and November, we notice similar minimum and average temperatures, both around 11°C and 21°C, respectively, showcasing a stable climate during this period. However, November tends to be slightly warmer with a maximum temperature peaking at 35°C compared to September's 35°C as well, but with increased humidity rising to 75% in November versus 58% in September. Additionally, November experiences significantly higher precipitation levels, averaging 123 mm over 14 rainy days compared to September's 50 mm over just 6 days. This shift in weather conditions can greatly affect outdoor activities and overall comfort. For more detailed insights, check out Sao Jose dos Campos weather in November.
In September, the weather typically features a temperature range from a minimum of 11°C (52°F) to a maximum of 35°C (94°F), with an average temperature of 21°C (70°F). The month sees about 50 mm (2.0 in) of precipitation over approximately 6 days, and the humidity hovers around 58%. In contrast, December experiences a slightly warmer temperature range, with a minimum of 13°C (55°F), an average of 23°C (73°F), and a maximum of 33°C (92°F). However, December is also significantly wetter, accumulating 149 mm (5.9 in) of rainfall across about 20 days, with higher humidity levels at 80%. This shift in weather patterns highlights a transition from the warmer, drier conditions of September to the cooler, wetter atmosphere of December. For more detailed information, you can refer to Sao Jose dos Campos weather in December.
As September unfolds in Sao Jose dos Campos, the weather presents a delightful transition between the cooler winter months and the warmer days ahead. With average temperatures rising to a comfortable 21°C (70°F), residents and visitors alike can enjoy the pleasantly mild days, while occasional peaks reaching 35°C (94°F) remind us of the approaching summer. Unlike the heavier rains typical in other seasons, September sees a modest 50 mm of precipitation over just six days, allowing for ample sunshine to brighten the landscape. With humidity levels at a manageable 58%, this month offers a refreshing balance that makes it a perfect time for outdoor activities. For a deeper understanding of what to expect throughout the year, explore the Sao Jose dos Campos Climate.