Last updated: August 21, 2025
Experience the vibrant weather of Santos Dumont, Brazil in September, where temperatures showcase a warm spectrum, peaking at a delightful 33°C (92°F) and averaging a comfortable 20°C (69°F), with lows dipping to a refreshing 10°C (51°F). This month sees a moderate precipitation level of 52 mm (2.1 in), spread across 9 rainy days, creating a lush backdrop for outdoor activities. With an average humidity of 63%, September in Santos Dumont offers a tropical yet enjoyable atmosphere, perfect for exploring the beauty of this charming Brazilian locale.
In September, Santos Dumont begins to shake off the chill of winter, welcoming milder temperatures as the min settles at a comfortable 10°C (51°F) and the average rises to a pleasant 20°C (69°F). The warmth starts to creep in, with daytime highs reaching up to 33°C (92°F), hinting at the hotter months ahead. This transitional month showcases a notable increase from the cooler averages of July and August, which hovered around 17°C (62°F) and 6°C (43°F) respectively. As spring approaches, you can expect a delightful blend of crisp mornings and warm afternoons, setting the stage for vibrant outdoor activities and a rejuvenating atmosphere in this charming Brazilian town.
September in Santos Dumont, Brazil, marks a gentle transition into the drier months, with precipitation totaling 52 mm (2.1 in) over an average of 9 rainy days. This figure reflects a modest uptick from the drier August, which saw only 42 mm, and contrasts sharply with the heavy rainfall typical of the preceding months. January through March are marked by substantial precipitation, with February recording a peak of 274 mm (10.8 in). As the year progresses, the frequency of rain decreases significantly, with October expected to usher in a return to wetter conditions. This trend highlights September as a key transitional period in Santos Dumont, where the atmosphere begins to shift, paving the way for the larger rainfalls of the later months, especially as the city heads into the peak of the rainy season.
In September, Santos Dumont, Brazil, experiences a notable drop in humidity, averaging 63%. This decline is part of a broader trend observed as the year progresses; after the peak levels of humidity observed from January to March, which linger around the 83% to 87% range, the atmospheric moisture begins to taper off significantly. The transition into the autumn months sees humidity levels decreasing further, reaching a low of 48% by October. This consistent decline hints at the region's gradual shift toward a drier climate as it moves away from the wet season, making September a refreshing interlude before the dry, crisp air of late autumn sets in.
In September, Santos Dumont experiences a UV Index of 12, categorized as extreme with a quick burn time of just 10 minutes. As we transition from winter to spring, the UV levels rise, reflecting a return to the intense sun exposure typical of the region. This shift is particularly noticeable when compared to the milder conditions of June and July, and aligns with the heightened levels seen in late summer months like January and February. Residents and visitors alike should take precautions against the sun's rays, especially as the index remains high into the following months. For more specifics on UV exposure in this vibrant locale, visit Santos Dumont UV Index.
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September in Santos Dumont, Brazil, shines brightly with an impressive 287 hours of sunshine, tying with July for the month’s sunniest delight. This vibrant month maintains a blissful average that reflects a trend of warm, sun-soaked days as summer approaches. Following the previous months' steady variation, September's brightness stands in contrast to the lower hours seen in the cooler months, hinting at a gradual transition into longer, sunlit days. With this backdrop of radiant weather, September invites residents and visitors alike to bask in the warmth while enjoying the natural beauty of the region.
In Santos Dumont, Brazil, September offers a moderate likelihood of sunny weather, with a 44% chance of sunshine. This month marks a noticeable transition from the sunnier days of July, which boasts an impressive 74% sun chance, and August at 53%, suggesting that the winter months are gradually giving way to the spring. Following September, the prospects of sunshine dramatically drop in October to just 9%, emphasizing the importance of savoring the sunny spells this time of year. Overall, September stands out as a bridge between the lush greenery of winter and the unpredictable weather patterns of spring, making it a delightful time to enjoy the outdoors.
In September, Santos Dumont, Brazil, basks in approximately 11 hours of daylight, maintaining the same duration as the preceding months of August and the upcoming October. This consistency suggests a gradual transition as the region shifts from the longer days of summer towards the slightly shorter days of autumn. Following the peak daylight hours seen in January and November with 13 hours, the daylight begins to taper off, reaching its lowest point of 10 hours in the depth of winter during June and July. As the year progresses, one can appreciate the rhythm of daylight in Santos Dumont, where each month brings subtle, yet noticeable changes.
As September rolls into Santos Dumont, Brazil, the average wind speed reaches a pleasant 2.5 m/s (6 mph), signaling a notable uptick from the preceding months. This slight increase marks September as a transition month, where the gentle breezes of winter give way to slightly stronger winds that herald the approach of spring. Following August's winds at 2.4 m/s (5 mph), September's conditions hint at a more invigorating atmosphere, leading into October's peak with an average of 2.7 m/s (6 mph). This pattern not only enhances the region's charm but also encourages outdoor activities, making it a delightful time for both locals and visitors to embrace the refreshing September air.
Weather in Santos Dumont varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Santos Dumont, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present notable contrasts in weather conditions. In September, temperatures range from a minimum of 10°C (51°F) to a maximum of 33°C (92°F), with an average of 20°C (69°F). The month sees 52 mm (2.1 in) of precipitation over 9 days, accompanied by a humidity level of 63%. In contrast, January experiences warmer temperatures, with a minimum of 17°C (63°F) and an average of 23°C (74°F), peaking at 33°C (91°F). However, it is also much wetter, receiving 164 mm (6.5 in) of rain over 15 days and a higher humidity of 83%. For more details on January weather patterns, you can check Santos Dumont weather in January.
When comparing the weather in September and February, there are noticeable differences in temperature and precipitation. September typically has a comfortably warm average temperature of 20°C (69°F), with maximum highs reaching up to 33°C (92°F). In contrast, February boasts a slightly higher average temperature of 22°C (73°F) and can peak at 34°C (93°F). However, February is also marked by significantly higher precipitation, with an average of 274 mm (10.8 in) over 19 days, compared to September's 52 mm (2.1 in) over just 9 days. Additionally, February experiences higher humidity levels, averaging 85%, compared to September's 63%. For a more detailed look at February weather, you can visit Santos Dumont weather in February.
In comparing the weather of September and March, we can see distinct differences in temperature and precipitation. September typically experiences milder temperatures, with an average of 20°C (69°F) and a maximum reaching 33°C (92°F), while March sees a warmer average of 23°C (73°F) and a peak of 32°C (90°F). However, March is notably wetter, receiving 216 mm (8.5 in) of precipitation over 17 days, compared to September’s 52 mm (2.1 in) across 9 days. Additionally, humidity levels are higher in March at 87%, compared to 63% in September, indicating a more humid and potentially stormier environment. For more specifics on weather in March, you can check out Santos Dumont weather in March.
When comparing the weather in September and April, both months exhibit mild and pleasant temperatures, but there are notable differences. In September, the average temperature ranges from a minimum of 10°C (51°F) to a maximum of 33°C (92°F), characterized by relatively lower humidity at 63%. In contrast, April presents a slightly warmer average, with temperatures ranging from a minimum of 12°C (53°F) to a maximum of 31°C (88°F), but experiences higher humidity at 86%. Furthermore, April tends to be wetter, accumulating 77 mm (3.0 in) of precipitation over 12 days, compared to September's 52 mm (2.1 in) across 9 days. For a detailed look at April weather, check out Santos Dumont weather in April.
In September, temperatures can range from a minimum of 10°C (51°F) to a maximum of 33°C (92°F), with an average of around 20°C (69°F). The month experiences a relatively moderate level of humidity at 63%, coupled with 52 mm (2.1 in) of precipitation over about 9 days. In contrast, May tends to be cooler, with temperatures ranging from a minimum of 7°C (45°F) to a maximum of 29°C (84°F) and an average of 18°C (66°F). The humidity is notably higher at 82%, and precipitation is slightly less, at 50 mm (2.0 in) over approximately 7 days. For a more detailed look at the weather conditions in May, you can check Santos Dumont weather in May.
In comparing the weather of September and June, September generally features warmer temperatures, with a minimum of 10°C (51°F) and an average of 20°C (69°F), compared to June's slightly cooler minimum of 9°C (49°F) and average of 18°C (65°F). Additionally, September experiences higher maximum temperatures, reaching up to 33°C (92°F), whereas June peaks at 29°C (85°F). Precipitation levels also vary significantly, with September recording 52 mm (2.1 in) over 9 days, in contrast to June’s more moderate 22 mm (0.9 in) over just 5 days. Furthermore, humidity is noticeably higher in June at 82%, compared to September’s 63%. For more specific insights, you can check this link: Santos Dumont weather in June.
In comparing the weather between July and September, September typically offers warmer temperatures, with averages reaching up to 20°C (69°F) compared to July's average of 17°C (62°F). While both months experience mild minimums—10°C (51°F) in September and 7°C (44°F) in July—September can peak significantly higher with a maximum of 33°C (92°F), whereas July tops out at 28°C (82°F). Additionally, September sees more precipitation, totaling 52 mm (2.1 in) across about 9 days, in contrast to July's relatively dry conditions with only 15 mm (0.6 in) over 3 days. However, humidity is notably higher in July at 77%, compared to September's 63%, making July feel more humid despite its cooler temperatures. For a more in-depth look, you can check out Santos Dumont weather in July.
September generally experiences warmer temperatures compared to August, with morning minimums of 10°C (51°F) and an average high reaching 33°C (92°F) versus August's minimum of 6°C (43°F) and a maximum of 30°C (86°F). The overall average temperature in September is about 3°C (5°F) higher than in August, which reflects a shift toward more summer-like conditions. However, September also sees an increase in precipitation, totaling 52 mm (2.1 inches) over 9 days compared to August's 42 mm (1.7 inches) over just 6 days. Humidity is slightly lower in September at 63%, compared to 72% in August. For a more detailed insight into August weather patterns, you can refer to Santos Dumont weather in August.
In September, the weather showcases a pleasant range of temperatures, with a minimum of 10°C (51°F) and an average of 20°C (69°F), reaching up to a maximum of 33°C (92°F). It experiences moderate precipitation at 52 mm (2.1 in) over 9 days, accompanied by a humidity level of 63%. In contrast, October brings slightly warmer temperatures with a minimum of 12°C (54°F) and an average of 21°C (70°F), peaking at 34°C (94°F). However, it also sees a significant increase in rainfall, totaling 166 mm (6.5 in) spread over 19 days, yet the humidity is lower at 48%. For more details, check out Santos Dumont weather in October.
In September, the weather typically features a minimum temperature of 10°C (51°F) and an average of 20°C (69°F), reaching a maximum of 33°C (92°F). The month sees about 52 mm (2.1 in) of precipitation over 9 days, and humidity levels average around 63%. In contrast, November experiences slightly warmer temperatures, with a minimum of 11°C (53°F) and an average of 21°C (69°F), while the maximum temperature hovers at 32°C (90°F). However, November is significantly wetter, receiving 241 mm (9.5 in) of rain over 20 days, with humidity levels slightly lower at 61%. For more detailed information, you can check Santos Dumont weather in November.
In September, temperatures in Santos Dumont range from a minimum of 10°C to a maximum of 33°C, with an average of around 20°C. The month typically sees about 52 mm of precipitation over 9 days, accompanied by a humidity level of 63%. In contrast, December experiences a slightly warmer temperature range, with minimums at 13°C and average highs reaching the same maximum of 33°C, but with an increased average temperature of 22°C. December is significantly wetter, with precipitation totaling 303 mm over 24 days, resulting in higher humidity at 68%. For more detailed information, you can check Santos Dumont weather in December.
As September rolls in, Santos Dumont experiences a delightful transition, characterized by warmer temperatures and a touch of humidity that sets it apart from the cooler months preceding it. With an average temperature of around 20°C (69°F), the city enjoys pleasant days under the sun, occasionally peaking at a sizzling 33°C (92°F). While rainfall is somewhat common with about 9 days of precipitation amounting to 52 mm (2.1 in), these showers contribute to the region's vibrant atmosphere without being overwhelming. This blend of warmth and occasional rain creates a unique charm, making September a fantastic time to experience the beauty of Santos Dumont. For more insights on weather patterns, visit Santos Dumont Climate.