Last updated: August 21, 2025
April in São Sebastião, Brazil offers a warm embrace, with maximum temperatures soaring to 32°C (89°F) and an inviting average of 23°C (74°F). While daytime warmth prevails, cool evenings can dip to a minimum of 17°C (64°F). However, this month also brings a considerable 125 mm (4.9 in) of precipitation over approximately 15 days, contributing to the region's 84% humidity. Visitors can expect a vibrant atmosphere filled with lush greenery, making it an ideal time for those who enjoy a tropical climate with a refreshing touch of rainfall.
In April, Sao Sebastiao, Brazil, experiences a delightful transition as temperatures begin to cool from the sultry heights of summer. With minimums dropping to 17°C (64°F) and averages settling around 23°C (74°F), the coastal city offers a more comfortable atmosphere for visitors. While the maximum temperature still flirts with 32°C (89°F), the overall trend towards milder weather signifies the approach of autumn. This shift not only enhances outdoor activities but also encourages a refreshing take on beach experiences and local festivities, making April a fantastic time to enjoy all that Sao Sebastiao has to offer.
In April, São Sebastião experiences a significant shift in precipitation, with 125 mm (4.9 inches) of rain spread across 15 days. This reduction marks a noticeable decline from the wetter months of January, February, and March, where rainfall exceeded 200 mm and often drenched the region for nearly 20 days each month. As the year progresses, April's precipitation paves the way for drier conditions in May and June, where averages dip to 119 mm (4.7 inches) and 100 mm (4.0 inches), respectively. This trend highlights a seasonal transition as the region moves from the peak rainy season into milder months, inviting both respite and anticipation for the sun to shine.
In April, Sao Sebastiao, Brazil, experiences a notable decline in humidity, dipping to 84%. This marks a continuation of a gradual decrease since the peak levels seen in the earlier months of the year, where humidity consistently hovered around 88% in January and February. As the region transitions into late spring, this trend suggests a shift towards a drier climate, paving the way for the subsequent months where humidity levels further drop, reaching 79% in May and descending to 72% in July. The overall pattern indicates a significant seasonal change, with April serving as a pivotal point in Sao Sebastiao's journey from the balmy, humid beginnings of the year to the milder, more comfortable conditions of winter.
In April, the UV Index in Sao Sebastiao remains notably high, recorded at 11, placing it in the extreme exposure category. This signals that even brief sun exposure can lead to skin damage within just 10 minutes. As spring unfolds in Brazil, the UV Index slightly decreases from the peak values seen earlier in the year, but caution is still paramount, as the intensity remains significant. This trend indicates a gradual tapering of extreme UV levels from January's relentless 15 down to April's 11. However, as the season progresses toward May, residents and visitors alike should be mindful of their sun safety practices. For ongoing updates and forecasts, check out the detailed information on the Sao Sebastiao UV Index.
UV Risk Categories
April shines brightly in São Sebastião, Brazil, offering a delightful 294 hours of sunshine. This month continues the trend of abundant sunlight that builds from March’s impressive 305 hours. As the rainy season approaches, April's warmth foreshadows the sun-drenched days of the preceding months, while still outshining the average hours seen in neighboring months like May and June. The gradual decline in sunlight will resume in June, but April’s golden rays are a reminder of the vibrant summer still lingering, giving visitors a perfect opportunity to enjoy the beach before the cooler months set in.
As April rolls into São Sebastião, residents and visitors can look forward to a notable increase in sunny days, with a 49% chance of sunshine—the highest so far this year. This upward trend continues from the previous months, where the likelihood of sunny skies has consistently improved, climbing from a modest 17% in January to 41% in March. Following April, while the chances remain quite favorable at 46% in May, the sunny weather peaks in July at 59%. With these promising forecasts, April stands out as a delightful month to enjoy the vibrant coastal views and outdoor activities that São Sebastião has to offer.
As April unfolds in São Sebastião, Brazil, the daylight duration begins its gradual descent, offering 11 hours of light each day. This marks a notable shift from the previous months, where January and February basked in 13 and 12 hours of daylight respectively, creating a vibrant, sun-filled atmosphere. The trend of diminishing daylight continues through May—where it drops to 10 hours—before stabilizing during the winter months of June and July. Interestingly, the return to longer days kicks off in August, signaling the beginning of a seasonal cycle where daylight gradually reclaims its dominance, alternating from 11 hours in August to 13 hours by December. This rhythmic fluctuation not only shapes the natural environment but also influences the daily life and activities of locals and visitors alike.
In April, the winds in São Sebastião, Brazil begin to pick up pace, marking a noticeable shift with an average wind speed of 3.0 m/s (7 mph)—a significant increase from the preceding months. This elevation in wind intensity signals the onset of a transition, as the region prepares for the gustier conditions that often characterize the mid-year months. Following April, the wind speeds continue to show an upward trend, peaking at 4.1 m/s (9 mph) in October. Interestingly, the gentle breezes of January through March give way to more lively gusts, with August and September also maintaining average speeds of 3.1 m/s (7 mph) and 3.3 m/s (7 mph), respectively. This shift not only enhances the coastal atmosphere but also offers an invigorating experience for both residents and visitors alike, setting the scene for outdoor adventures and leisurely strolls by the beach.
Weather in Sao Sebastiao varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Sao Sebastiao, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between April and January, April offers slightly cooler temperatures with a minimum of 17°C (64°F) and an average of 23°C (74°F), while January starts off warmer with a minimum of 20°C (69°F) and an average of 26°C (79°F). Both months experience high humidity levels, though April's humidity at 84% is slightly lower than January's 88%. Precipitation also varies, as January sees a significant 206 mm (8.1 in) across 19 days, compared to April's 125 mm (4.9 in) over 15 days. For more details about January weather, you can visit Sao Sebastiao weather in January.
In comparing the weather of April to that of February, we notice some interesting contrasts. April features a slightly cooler temperature range, with a minimum of 17°C (64°F) and an average of 23°C (74°F), while February boasts higher minimums at 20°C (68°F) and an average of 25°C (77°F). Both months share the same maximum temperature at 32°C (90°F). However, February experiences significantly more rainfall, receiving 277 mm (10.9 inches) over 21 days compared to April's 125 mm (4.9 inches) over 15 days. The humidity levels are also higher in February at 88%, compared to April's 84%. For more details on February's weather, you can visit Sao Sebastiao weather in February.
In comparing the weather of April and March, April experiences slightly cooler temperatures with a minimum of 17°C (64°F) and an average of 23°C (74°F), while March has a higher minimum of 19°C (66°F) and an average of 25°C (77°F). Both months reach a maximum of 32°C (89°F), but April sees less precipitation at 125 mm (4.9 in) over 15 days, compared to March's 247 mm (9.7 in) over 20 days. Additionally, April's humidity is slightly lower at 84%, while March has a humidity level of 87%. For more detailed information, you can check Sao Sebastiao weather in March.
April and May showcase a transition in weather patterns, with April generally warmer and more humid. In April, temperatures range from a minimum of 17°C (64°F) to a maximum of 32°C (89°F), with an average temperature of 23°C (74°F) and significant precipitation of 125 mm (4.9 in) over 15 days, resulting in a humidity level of 84%. In contrast, May experiences slightly cooler temperatures, with a minimum of 14°C (57°F) and a maximum of 28°C (83°F), averaging 21°C (70°F). Precipitation is also marginally less in May, totaling 119 mm (4.7 in) over 11 days and with lower humidity at 79%. For more details, check out Sao Sebastiao weather in May.
In comparing the weather between April and June, April tends to be warmer with an average temperature of 23°C (74°F) and maximum highs reaching 32°C (89°F). In contrast, June features slightly cooler temperatures, averaging 21°C (69°F) with a maximum of 30°C (86°F). April also experiences more precipitation, with 125 mm (4.9 in) over 15 days, while June sees 100 mm (4.0 in) across 12 days. Additionally, humidity levels are higher in April at 84%, compared to 77% in June. For more specifics, you can check Sao Sebastiao weather in June.
April and July exhibit notable differences in weather patterns. In April, temperatures range from a minimum of 17°C (64°F) to a maximum of 32°C (89°F), with an average of 23°C (74°F). The month is characterized by high humidity levels at 84% and considerable precipitation, totaling 125 mm (4.9 in) over about 15 days. In contrast, July experiences milder weather, with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 29°C (85°F), averaging 20°C (67°F). Precipitation is significantly lower, at 63 mm (2.5 in) over just 6 days, and the humidity decreases to 72%. For more detailed information, you can check Sao Sebastiao weather in July.
April and August present contrasting weather patterns, with April typically experiencing warmer temperatures. In April, the average temperature hovers around 23°C (74°F), with highs reaching up to 32°C (89°F), while August cools down slightly to an average of 19°C (67°F) and a maximum of 31°C (88°F). Precipitation levels are similar, with April receiving 125 mm (4.9 in) over 15 days of rain compared to August's 116 mm (4.6 in) over 11 days. Additionally, humidity levels are higher in April at 84%, while August offers a drier atmosphere with humidity at 65%. For more specific details about August weather, you can visit Sao Sebastiao weather in August.
April and September in Sao Sebastiao present distinct weather patterns. April features warmer temperatures, with an average of 23°C (74°F) and a high of 32°C (89°F), alongside higher humidity levels at 84%. The month is relatively wet, with 125 mm (4.9 in) of precipitation spread over 15 days. In contrast, September sees slightly cooler temperatures, with an average of 21°C (70°F) and a high of 34°C (93°F), while humidity drops to 58%. Additionally, September experiences less rainfall, totaling 95 mm (3.7 in) over 11 days. For more details, you can check Sao Sebastiao weather in September.
April and October present contrasting weather patterns, with April experiencing warmer temperatures and higher humidity. In April, the average temperature ranges from 17°C (64°F) to a maximum of 32°C (89°F), accompanied by significant rainfall of 125 mm (4.9 in) over 15 days at a high humidity level of 84%. In contrast, October features slightly cooler temperatures, with averages between 16°C (61°F) and a maximum of 36°C (96°F). However, it sees more precipitation, totaling 161 mm (6.3 in) over 19 days, and a much lower humidity of 50%. For more detailed insights into the weather patterns during this time, check out Sao Sebastiao weather in October.
April and November exhibit similar warm temperatures, with April averaging slightly higher at 23°C (74°F) compared to November's 22°C (72°F). Both months experience high humidity, although April is notably more humid at 84%, while November's humidity is lower at 75%. In terms of precipitation, November is wetter, receiving 176 mm (6.9 in) over 18 days, compared to April's 125 mm (4.9 in) over 15 days. For a deeper look into the climate specifics, you can check Sao Sebastiao weather in November.
April and December offer warm weather, but they feature different climatic characteristics. In April, temperatures range from a minimum of 17°C (64°F) to a maximum of 32°C (89°F), with an average of 23°C (74°F). The month sees substantial precipitation, with 125 mm (4.9 in) spread over about 15 days, and humidity levels are relatively high at 84%. Conversely, December experiences slightly higher temperatures, with a minimum of 18°C (64°F) and an average of 24°C (75°F), peaking at 31°C (88°F). It also has more rainfall than April, totaling 197 mm (7.7 in) over around 20 days, while humidity sits at a slightly lower 80%. For more detailed insights, you can visit Sao Sebastiao weather in December.
As April arrives in São Sebastião, it ushers in a notable shift in the weather pattern, characterized by an inviting average temperature of 23°C and intermittent rain that contributes to the lush landscape. Although temperatures can peak at a warm 32°C, the average humidity of 84% adds a touch of tropical intensity to the atmosphere. With around 15 days of precipitation, this month's dampness stands out compared to the drier spells earlier in the year, transforming the coastal charm into a vibrant, refreshing paradise. For more detailed insights on how April fits into the yearly weather narrative, explore the Sao Sebastiao Climate.