Last updated: August 21, 2025
In October, São Sebastião experiences a delightful blend of warm temperatures and moderate humidity, making it an appealing destination for visitors. Daily maximums can soar to 35°C (95°F), with an average of around 26°C (79°F), providing plenty of sunshine for outdoor activities. However, the month also brings an expected 26 mm (1.0 in) of rain over approximately 9 days, so travelers should be prepared for occasional showers. With a relative humidity of 77%, the atmosphere carries a tropical feel, ensuring that the region maintains its lush beauty throughout the month.
In October, São Sebastião, Brazil, welcomes the onset of warmer days, with temperatures typically ranging from a minimum of 21°C (69°F) to a maximum of 35°C (95°F). As the month progresses, the average temperature hovers around 26°C (79°F), reflecting a slight dip from the peak summer heat of the earlier months. This balance of warmth and comfort makes October an inviting time to explore the stunning coastlines and vibrant culture of the region. With each passing month transitioning from the cooler winter, October begins to hint at the sizzling summer ahead, setting the stage for a tropical experience filled with sun-drenched adventures. As you enjoy the pleasant climate, take advantage of outdoor activities and the natural beauty that São Sebastião has to offer.
In October, São Sebastião experiences a notable decrease in precipitation, with only 26 mm (1.0 in) of rainfall recorded over just 9 days. This is a significant drop compared to the wetter months preceding it, particularly from May to July, which each saw over 100 mm of rain spread across 22 to 24 days. As the region transitions into the latter part of the year, October marks a shift towards drier conditions, foreshadowing the minimal rainfall of November and December. This trend illustrates a seasonal cycle where the heaviest rains occur mid-year, giving way to a more tranquil October, ideal for enjoying the coastal beauty that São Sebastião has to offer.
In Sao Sebastiao, Brazil, October marks a transition to drier conditions, with humidity levels dipping to 77%. This month continues the downward trend observed since the peak humidity of 86% in April and May, demonstrating a gradual decrease as the year progresses. Following September's 79%, October's figures signify a shift towards more comfortable weather, paving the way for the approaching summer months. The overall pattern reveals a distinct seasonal rhythm, with humidity consistently higher in the first half of the year, while the latter months witness a steady decline, ultimately stabilizing around 76% by December.
As October arrives in São Sebastião, Brazil, the UV Index remains at a striking 14, maintaining the extreme exposure category that has characterized the region for most of the year. This level of UV radiation means that sensitive skin can start to burn in just 10 minutes, urging locals and visitors alike to take necessary precautions when enjoying the sun. The trend throughout the year shows a consistent pattern of high UV levels, with only a slight dip in June and July when the index falls to 10, representing very high exposure. However, overall, the months from January to October demonstrate a formidable potential for sunburn, reflecting the vibrant and sunny conditions of this coastal paradise. For more detailed insights on UV levels, visit Sao Sebastiao UV Index.
UV Risk Categories
In October, São Sebastião bathes in a remarkable 355 hours of sunshine, marking it as one of the sunniest months of the year. This vibrant coastal city welcomes this uptick in daylight after a steady rise throughout the spring, following September's 333 hours. The trend is clear: as the year advances, so does the sunshine, illuminating the stunning beaches and lush landscapes that define this Brazilian gem. In comparison to the cooler winter months, where sunshine dipped slightly, October heralds a radiant shift into the warmer, sunnier season ahead, inviting both locals and visitors to embrace the delightful outdoors.
In Sao Sebastiao, Brazil, October boasts a 46% chance of sunny weather, making it one of the more promising months for those seeking blue skies. This figure reflects a notable trend of increasing sunshine potential as the year unfolds, especially after a dip in the spring months. Following the sunnier days of September with a 47% chance, October holds steady, slightly lower but still favorable, hinting at the warmth of the approaching summer. As the year winds down, the likelihood of sunlight decreases again in November and December, suggesting that October is a prime time for beach lovers and outdoor enthusiasts to enjoy the sun before the clouds return.
In Sao Sebastiao, Brazil, the daylight duration remains fairly consistent throughout the year, with a notable shift as seasons change. From January through March, residents enjoy an ample 12 hours of daylight, perfect for basking in the sun and exploring the beautiful coastline. As the calendar shifts to April, daylight begins to wane slightly, with the city experiencing 11 hours through the mid-year months of May to August. Fortunately, September brings a return to 12 hours of daylight, restoring the vibrant atmosphere. October follows suit, maintaining this generous daylight, which continues through November and December. This rhythm of daylight not only defines the seasonal experience in Sao Sebastiao but also highlights the region's enviable climate year-round.
As October sweeps into São Sebastião, the coastal town experiences a notable uplift in wind speed, averaging 3.5 m/s (8 mph)—the highest for the year so far. This marks a gentle transition from the lighter breezes of the earlier months, which typically hover around 2.4 m/s to 3.2 m/s. Following a gradual buildup from the summer and into early fall, this increase signals the onset of a more invigorating atmosphere, perfect for outdoor enthusiasts and water sports lovers alike. The winds will only strengthen throughout November and December, reaching 3.7 m/s (8 mph), offering a refreshing contrast to the warm sun-soaked days. As October progresses, the delightful breeze acts as a herald for the vibrant season ahead, ushering in both change and excitement along the picturesque coastline.
Weather in Sao Sebastiao varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Sao Sebastiao, focusing on differences in temperature, rainfall, humidity, and UV levels.
October and January exhibit relatively warm weather, with January being slightly warmer and wetter. In October, temperatures range from a minimum of 21°C (69°F) to a maximum of 35°C (95°F), with an average of 26°C (79°F). Precipitation is lighter, totaling 26 mm (1.0 in) across about 9 days, and humidity is at 77%. Conversely, January sees a slightly higher minimum temperature of 22°C (71°F) and an average of 27°C (81°F), peaking at 36°C (96°F). It also experiences increased precipitation, totaling 35 mm (1.4 in) over approximately 12 days, with humidity rising to 81%. For specifics on January weather, you can refer to Sao Sebastiao weather in January.
When comparing the weather in October and February, both months experience similar high temperatures, with maximums reaching up to 35°C (95°F). However, October tends to have a slightly lower average temperature of 26°C (79°F) compared to February's 28°C (82°F). Precipitation also varies between the two months; October sees 26 mm (1.0 in) over about 9 days, while February receives more rainfall at 49 mm (1.9 in) across 13 days. Additionally, February has a higher humidity level of 82%, compared to October's 77%. For more detailed information, you can check out Sao Sebastiao weather in February.
In comparing the weather between October and March, October tends to have slightly lower temperatures, with a minimum of 21°C (69°F) and an average of 26°C (79°F), while March sees a minimum of 22°C (72°F) and an average of 27°C (81°F). March, however, is characterized by higher maximum temperatures, peaking at 37°C (99°F), compared to October's maximum of 35°C (95°F). Additionally, March experiences significantly more precipitation, with 91 mm (3.6 in) over 17 days compared to October's 26 mm (1.0 in) over 9 days. The humidity levels are also higher in March at 84%, compared to October's 77%. For more details, you can check Sao Sebastiao weather in March.
When comparing the weather in October to that of April, we see notable differences in temperature and precipitation. October boasts temperatures ranging from a minimum of 21°C (69°F) to a maximum of 35°C (95°F), with an average of 26°C (79°F) and comparatively lower precipitation at 26 mm (1.0 in) over 9 days. In contrast, April presents slightly warmer temperatures, averaging 27°C (80°F) with a maximum of 34°C (93°F) and the same minimum of 21°C (71°F). However, it experiences significantly higher precipitation, totaling 94 mm (3.7 in) across 20 days and higher humidity at 86%. For more detailed insights into April's weather, you can check Sao Sebastiao weather in April.
In comparing the weather of October and May in Sao Sebastiao, October tends to be slightly warmer, with average temperatures ranging from a minimum of 21°C (69°F) to a maximum of 35°C (95°F), while May's temperatures are a bit cooler, averaging between 20°C (69°F) and 34°C (94°F). However, May experiences significantly higher precipitation, totaling 105 mm (4.1 in) over 22 days, compared to October's 26 mm (1.0 in) over just 9 days. Additionally, May has a higher humidity level at 86%, compared to October's 77%. For more detailed information on May's weather, you can visit Sao Sebastiao weather in May.
When comparing the weather in October and June, there are notable differences in temperature and precipitation. October features warmer conditions with temperatures ranging from a minimum of 21°C (69°F) to a maximum of 35°C (95°F), while June offers slightly cooler temperatures, with a range of 18°C (65°F) to 30°C (87°F). Additionally, October experiences significantly less rainfall, with only 26 mm (1.0 in) over about 9 days, compared to June's 109 mm (4.3 in) spread across 24 days. Humidity levels also play a role, with October at 77% and June at 83%. For more detailed insights, check out Sao Sebastiao weather in June.
In comparing the weather of October and July, October tends to be warmer with average temperatures ranging from a minimum of 21°C (69°F) to a maximum of 35°C (95°F), while July's temperatures are cooler, with an average range from 17°C (63°F) to 30°C (86°F). Additionally, October experiences significantly less precipitation, totaling 26 mm (1.0 in) over 9 days, compared to July's 108 mm (4.2 in) over 24 days. Humidity levels are slightly lower in October at 77%, whereas July has a higher humidity of 81%. For more detailed weather information, you can check Sao Sebastiao weather in July.
When comparing the weather between October and August, October tends to be warmer overall, with an average temperature of 26°C (79°F) compared to August's 24°C (75°F). The maximum temperatures also reflect this trend, reaching up to 35°C (95°F) in October, while August peaks at 31°C (88°F). However, August experiences significantly more rainfall, with a total precipitation of 62 mm (2.5 in) over 20 days, in contrast to October’s 26 mm (1.0 in) over just 9 days. Both months have high humidity levels, with August at 80% and October slightly lower at 77%. For more details on August weather, you can check Sao Sebastiao weather in August.
In comparing the weather between September and October, October generally presents warmer temperatures, with a minimum of 21°C (69°F) and an average of 26°C (79°F), compared to September's minimum of 19°C (66°F) and average of 24°C (76°F). The maximum temperature in October also rises to 35°C (95°F), whereas September peaks at 33°C (91°F). Precipitation decreases notably in October, with just 26 mm (1.0 in) over 9 days, while September experiences twice that amount at 52 mm (2.1 in) across 18 days. Humidity levels remain quite similar, with October at 77% and September slightly higher at 79%. For more detailed information about September weather, you can visit Sao Sebastiao weather in September.
October and November exhibit similar warm conditions, with both months featuring a minimum temperature of 21°C (69°F). However, November enjoys a slightly higher average temperature of 27°C (81°F) compared to October's 26°C (79°F), while the maximum temperatures remain the same at 35°C (95°F) in October and 96°F in November. Precipitation is slightly higher in November, with 28 mm (1.1 in) over 8 days, compared to 26 mm (1.0 in) over 9 days in October. Humidity levels are quite comparable, with October at 77% and November at 76%. For more detailed information, check out Sao Sebastiao weather in November.
In October, the weather generally features warm temperatures, with a minimum of 21°C (69°F) and an average of 26°C (79°F), peaking at a maximum of 35°C (95°F). The humidity is relatively high at 77%, and there is a slight chance of precipitation, averaging around 26 mm (1.0 in) over 9 days.
By December, temperatures rise slightly, with a minimum of 22°C (72°F) and an average of 27°C (81°F), while the maximum can reach up to 36°C (97°F). Precipitation increases marginally to 28 mm (1.1 in), but occurs over just 8 days, with humidity remaining similar at 76%. For more detailed information, you can check the Sao Sebastiao weather in December.
As October arrives in Sao Sebastiao, the weather offers a delightful blend of warmth and occasional rain, setting it apart from the more intense summer months. With an average temperature comfortably resting around 26°C (79°F), this month provides a perfect balance for beachgoers and outdoor enthusiasts. The humidity levels hover at 77%, making it feel pleasantly tropical, while the 26 mm of rainfall across 9 days introduces a refreshing change, nurturing the lush landscapes. Compared to other months, October's mild conditions create an inviting atmosphere for both locals and visitors alike. For a deeper dive into the weather patterns throughout the year, check out Sao Sebastiao Climate.