January Weather in Sao Sebastiao, Brazil

Last updated: August 21, 2025

Sao Sebastiao, Brazil, in January, offers a tropical escape with maximum temperatures reaching 32°C (90°F) and an average warmth of 26°C (79°F), ensuring pleasant beach days. However, travelers should be prepared for the monsoon-like conditions, as the area experiences 206 mm (8.1 in) of rainfall spread over 19 days, leading to a humid atmosphere with levels around 88%. This unique blend of heat and moisture creates a lush environment, perfect for enjoying the beautiful landscapes while being mindful of occasional showers.

January Temperature in Sao Sebastiao

In Sao Sebastiao, Brazil, January delivers a warm and inviting climate, with temperatures ranging from a comfortable 20°C (69°F) to a peak of 32°C (90°F). This month boasts an average temperature of 26°C (79°F), perfect for beach outings and outdoor adventures. As the year progresses into February, temperatures remain relatively stable, with no significant drop in heat, maintaining the same maximum of 32°C (90°F) while the average dips slightly to 25°C (77°F). From March onward, the nights grow cooler, especially by April, where lows reach 17°C (64°F). However, the warmth quickly returns in subsequent months, particularly in September and October, when highs soar to around 34°C (93°F) and 36°C (96°F), respectively. Overall, January encapsulates the tropical essence of Sao Sebastiao, making it an ideal time for travelers seeking sun-soaked escapes.

January Weather in Sao Sebastiao: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Sao Sebastiao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sao Sebastiao, January typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec787777737069676770717175
Data source: Temperature data for Sao Sebastiao generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Sao Sebastiao

In January, Sao Sebastiao experiences significant precipitation, with an average of 206 mm (8.1 in) over 19 rainy days. This sets the stage for a wet summer, as rainfall peaks in February at 277 mm (10.9 in), accompanied by 21 days of rain. Following this, March maintains a high level of moisture at 247 mm (9.7 in), before a noticeable drop occurs in April, with precipitation decreasing to 125 mm (4.9 in) over 15 days. As the year progresses, rainfall gradually diminishes, hitting its annual low in July with only 63 mm (2.5 in) across just 6 days. This trend of declining rain continues through mid-year, suggesting that while January starts off the year with a strong wet season, it transitions into drier months, making it an interesting climatic pattern for both residents and visitors.

January Precipitation Trends in Sao Sebastiao

The chart displays monthly precipitation patterns in Sao Sebastiao, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Sao Sebastiao, January typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec2062772471251191006311695161176197
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

January Humidity in Sao Sebastiao

In Sao Sebastiao, Brazil, January's humidity stands at a notable 88%, setting the stage for a tropical summer atmosphere that persists throughout February. As the year progresses into March, humidity slightly lessens to 87%, gradually decreasing to 84% by April, signaling the beginning of drier months. Early summer moisture continues to wane through May and June, dropping to 79% and 77%, respectively. By mid-year, July ushers in a more comfortable 72%, further declining to a refreshing 65% in August. As autumn approaches, September witnesses a significant drop to 58%, with October reaching its lowest point at 50%. The trend shifts again as humidity rises in November and December, concluding the year with 75% and 80% respectively. This fluctuation paints a vivid picture of Sao Sebastiao's climate, characterized by a humid tropical peak in the early months and a drier spell mid-year, before cozying up to increased humidity as the year wraps up.

January Average Humidity in Sao Sebastiao

This chart illustrates the average monthly humidity levels in Sao Sebastiao, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Sao Sebastiao is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%88%84%79%77%72%65%58%50%75%80%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Sao Sebastiao

In January, residents and visitors in Sao Sebastiao face an intense UV Index of 15, categorized as extreme, prompting a burn time of just 10 minutes. This trend continues throughout February and marks the peak of intense sun exposure, which gradually decreases in March and April. As the months progress, particularly in May and June, the UV Index lowers slightly to levels categorized as very high and high, allowing for a longer burn time of 15 to 25 minutes. However, as the year shifts back into the latter months, the UV Index surges again, with November and December returning to an extreme exposure level of 14 to 15, reinforcing the need for vigilant sun protection. Whether you’re soaking up the sun or exploring the outdoors, staying informed is crucial for safety. For more detailed insights, visit Sao Sebastiao UV Index.

Maximum UV Index Levels in Sao Sebastiao for January

The chart shows the monthly maximum UV Index (UVI) for Sao Sebastiao in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Sao Sebastiao typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec15151211867911131415
Data source: Sao Sebastiao January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

January Sunshine in Sao Sebastiao

In Sao Sebastiao, Brazil, January marks the beginning of a sun-soaked year, offering an impressive 256 hours of sunshine. As the summer unfolds, the sun shines even brighter in February, with 272 hours, and peaks in March, reaching a dazzling 305 hours. This radiant trend continues, with sunshine slightly tapering off in April at 294 hours and May at 282 hours. June introduces a dip, providing 261 hours, but the warmth returns as sunny spells increase again through July and August, bringing 288 and 263 hours, respectively. The months following display a consistent embrace of sunshine, with September boasting 290 hours, October at 271 hours, and a remarkable resurgence in November and December, hitting 299 and 324 hours. Overall, the variability of daylight illuminates Sao Sebastiao's charm, with sunshine playing a key role in its coastal allure throughout the year.

Monthly Sunshine Duration in Sao Sebastiao: January Highlighted

The January sunshine duration represents the total number of hours Sao Sebastiao experiences direct sunlight during the month of January, excluding cloudy or obstructed periods. This chart compares the sunshine duration of January with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec256h272h305h294h282h261h288h263h290h271h299h324h
Data source: Sao Sebastiao January Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sao Sebastiao During January

In Sao Sebastiao, Brazil, the likelihood of sunny weather begins modestly in January at just 17%, making it one of the least favorable months for sun-seekers. However, as the year progresses, a remarkable upward trend emerges; by February, the chance of sunshine nearly doubles to 37%, and continues to climb steadily, peaking at 59% in July. This general pattern of increasing sunshine persists through the winter months, dipping slightly into the fall but remaining relatively favorable, with April and May also boasting nearly half the month bathed in sunlight. Overall, while January may leave you longing for rays, the following months offer a brighter outlook for those looking to soak up the sun.

Percentage of Sunny Days in January in Sao Sebastiao

The chart illustrates the percentage of sunny days in Sao Sebastiao throughout the year, with January highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Sao Sebastiao experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec17%37%41%49%46%40%59%52%38%18%38%41%
Data source: Sao Sebastiao January chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sao Sebastiao in January

In Sao Sebastiao, Brazil, January shines with approximately 13 hours of daylight, marking the peak of the sun-drenched summer months. As the year progresses into February and March, daylight remains consistent at 12 hours, providing ample time for outdoor adventures. However, a gradual decline begins in April, with daylight dipping to 11 hours, and this trend continues through the cooler months of May to July, where it stabilizes at 10 hours. With the arrival of August, daylight hours start to rebound, climbing back to 11 hours in September, and finally reaching 12 hours in October. As the year wraps up, November and December bring back the longer days of 13 hours, creating a lovely bookend to a year of shifting light—a rhythm that beautifully reflects the tropical climate of this coastal paradise.

Average Daylight Hours in Sao Sebastiao for January

The chart illustrates the variation in daylight duration in Sao Sebastiao throughout the year, with January highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec13h 23m12h 51m12h 11m11h 30m10h 56m10h 40m10h 49m11h 18m11h 57m12h 38m13h 15m13h 33m
Data source: Sao Sebastiao daylight hours, calculated by summing the hours between sunrise and sunset for each day.

January Winds in Sao Sebastiao

In January, Sao Sebastiao experiences a gentle breeze with an average wind speed of 2.2 m/s (5 mph), mirroring the trend seen in February. As the seasons transition into the next few months, a noticeable increase in wind speed begins in April, reaching 3.0 m/s (7 mph) before steadily rising to 4.1 m/s (9 mph) by October. This gradual escalation highlights a shift towards more dynamic weather patterns, with later months, particularly August and September, exhibiting stronger winds of 3.1 m/s and 3.3 m/s (7 mph each), respectively. As the year comes to a close, wind speeds slightly taper off, showcasing Sao Sebastiao's unique climatic rhythm, where the most tranquil breezes of early January give way to invigorating gusts in the latter half of the year.

Average January Wind Speed in Sao Sebastiao

The chart displays monthly wind speed patterns in Sao Sebastiao, with values for each month shown alongside January's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how January's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.2 m/s2.22.13.02.52.62.53.13.34.13.02.7
Data source: Sao Sebastiao January wind data, generated using information from the Copernicus Climate Change Service.

How January Weather in Sao Sebastiao Compares to Other Months

Weather in Sao Sebastiao varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Sao Sebastiao, focusing on differences in temperature, rainfall, humidity, and UV levels.

January and February exhibit similar warm temperatures, with January averaging 26°C (79°F) compared to February's slightly cooler average of 25°C (77°F). Both months have minimum temperatures consistently around 20°C (68°F), and maximum temperatures peak at 32°C (90°F). However, February experiences significantly higher rainfall, accumulating 277 mm (10.9 in) over 21 days, compared to January's 206 mm (8.1 in) over 19 days. Humidity levels remain constant at 88% for both months, creating a consistently humid environment. For more details on February's weather, you can visit Sao Sebastiao weather in February.

In comparing the weather between January and March, both months feature relatively warm temperatures, with January showing a slightly higher average of 26°C (79°F) compared to March's 25°C (77°F). However, March experiences a similar high of 32°C (89°F) while January's maximum can peak at 32°C (90°F). Precipitation levels increase in March, with a total of 247 mm (9.7 in) over 20 days, contrasting with January's 206 mm (8.1 in) over 19 days. Humidity remains relatively stable, at 88% in January and dropping slightly to 87% in March. For more detailed information on March weather, check out Sao Sebastiao weather in March.

In January, the weather in Sao Sebastiao is typically warmer, with average temperatures ranging from a minimum of 20°C (69°F) to a maximum of 32°C (90°F), while April sees slightly cooler averages, with a minimum of 17°C (64°F) and a maximum of 32°C (89°F). January also experiences higher precipitation levels, totaling 206 mm (8.1 in) over 19 days, compared to April's 125 mm (4.9 in) over 15 days. Additionally, January's humidity is higher at 88%, while April maintains a more comfortable level at 84%. For more specific details about the climate during this month, check out Sao Sebastiao weather in April.

In January, Sao Sebastiao experiences a warm climate with temperatures ranging from a minimum of 20°C (69°F) to a maximum of 32°C (90°F), and an average temperature of 26°C (79°F). The month is characterized by high humidity at 88% and significant rainfall, totaling 206 mm (8.1 in) over 19 days. In contrast, May offers cooler weather, with temperatures dropping to a minimum of 14°C (57°F) and peaking at 28°C (83°F), while the average temperature is 21°C (70°F). Rainfall in May is notably lower at 119 mm (4.7 in) across 11 days, and humidity is also reduced to 79%. For more details, you can check Sao Sebastiao weather in May.

In January, the weather is notably warmer, with temperatures ranging from a minimum of 20°C (69°F) to a maximum of 32°C (90°F) and an average of 26°C (79°F). This month also experiences significant rainfall, with a total precipitation of 206 mm (8.1 in) spread over 19 days and a high humidity level of 88%. In contrast, June brings cooler conditions, with temperatures dipping to a minimum of 15°C (60°F) and peaking at 30°C (86°F), resulting in an average temperature of 21°C (69°F). Precipitation is much lower in June at 100 mm (4.0 in) over 12 days, and humidity decreases to a more comfortable 77%. For more details on the weather in June, you can check Sao Sebastiao weather in June.

In January, the weather is significantly warmer and more humid, with temperatures ranging from a minimum of 20°C (69°F) to a maximum of 32°C (90°F) and an average of 26°C (79°F). This month also experiences considerable rainfall, totaling 206 mm (8.1 in) over 19 days, resulting in a high humidity level of 88%.

In contrast, July features much cooler temperatures, with a minimum of 11°C (52°F) and a maximum of 29°C (85°F), averaging around 20°C (67°F). The precipitation is notably lower in July, at 63 mm (2.5 in) over just 6 days, and the humidity drops to 72%. For a detailed overview, you can check out Sao Sebastiao weather in July.

January and August present contrasting weather conditions. In January, temperatures are warmer, with a minimum of 20°C (69°F) and an average of 26°C (79°F), peaking at a maximum of 32°C (90°F). This month also experiences significant rainfall, totaling 206 mm (8.1 in) over 19 days, accompanied by high humidity levels of 88%. In contrast, August is cooler, with a minimum temperature of 13°C (56°F) and an average of 19°C (67°F), while the maximum reaches 31°C (88°F). The precipitation in August is notably less, at 116 mm (4.6 in) over 11 days, and the humidity drops to 65%. These differences illustrate the variation in weather patterns between the two months. For more details, check out Sao Sebastiao weather in August.

January and September present a striking contrast in weather conditions. In January, temperatures range from a minimum of 20°C (69°F) to a maximum of 32°C (90°F), with an average of 26°C (79°F). This month is characterized by high humidity levels at 88% and considerable precipitation, totaling 206 mm (8.1 in) over 19 days. In contrast, September experiences milder temperatures, with a minimum of 15°C (60°F) and a maximum of 34°C (93°F), averaging at 21°C (70°F). Precipitation is significantly reduced to 95 mm (3.7 in) over just 11 days, along with a drop in humidity to 58%. For more detailed insights about the weather during September, you can check Sao Sebastiao weather in September.

In January, the weather in São Sebastião is notably warmer and more humid, with average temperatures ranging from a minimum of 20°C (69°F) to a maximum of 32°C (90°F) and a high humidity level of 88%. This month also sees significant rainfall, with 206 mm (8.1 in) of precipitation spread over 19 days. In contrast, October experiences slightly cooler conditions, with temperatures varying from a minimum of 16°C (61°F) to a maximum of 36°C (96°F), and a much lower humidity of 50%. Precipitation in October is also less, totaling 161 mm (6.3 in) over the same number of rainy days. For a more detailed look at the October climate, visit Sao Sebastiao weather in October.

January and November present distinct weather patterns in Sao Sebastiao. January typically boasts higher temperatures, with minimums around 20°C (69°F) and maximums reaching 32°C (90°F), while November sees slightly cooler temperatures, ranging from 16°C (60°F) to a maximum of 31°C (88°F). Precipitation is more abundant in January, with 206 mm (8.1 in) over 19 days, compared to November's 176 mm (6.9 in) over 18 days. Additionally, humidity levels are higher in January at 88%, whereas November experiences a more comfortable 75% humidity. For more details, you can visit Sao Sebastiao weather in November.

In comparing the weather between January and December, January tends to be slightly warmer, with average temperatures reaching around 26°C (79°F), while December's average temperature is a bit lower at 24°C (75°F). The maximum temperatures in January can reach up to 32°C (90°F), compared to December's peak of 31°C (88°F). January also experiences higher precipitation levels with 206 mm (8.1 in) over 19 days, compared to December's 197 mm (7.7 in) across 20 days. Although January has more rainfall, it also has a higher humidity level of 88%, compared to December's 80%. For more specifics about December weather in São Sebastião, you can visit Sao Sebastiao weather in December.

Compare Sao Sebastiao's Climate with Cities Worldwide

Conclusion: What to Expect From January Weather in Sao Sebastiao

In January, São Sebastião experiences a vibrant and humid tropical climate, marked by higher temperatures that invite locals and visitors alike to enjoy the lush coastal beauty. While the month brings warm days, the average temperature hovers around a delightful 26°C, making it ideal for beachgoers. However, January is also characterized by frequent rainfall, with nearly two-thirds of the month seeing precipitation, a stark contrast to the drier months that follow. As humidity often peaks at 88%, the air feels quite warm, creating a true tropical ambiance. Overall, January sets a dynamic stage for exploration and relaxation, inviting everyone to embrace the sun-soaked beaches and lush surroundings. To learn more about what to expect throughout the year, check out the detailed insights on the Sao Sebastiao Climate.