Climate and monthly weather forecastSão Sebastião, Brazil
Climate and monthly weather forecast
Weather in January
January, like December, in São Sebastião, Brazil, is another warm summer month, with an average temperature varying between 23.2°C (73.8°F) and 26.8°C (80.2°F). January's presence marks an average high-temperature of a still warm 26.8°C (80.2°F), subtly varied from December's 25.6°C (78.1°F). Weather in January »Weather in February
February, the last month of the summer in São Sebastião, is also a moderately hot month, with an average temperature ranging between min 23.3°C (73.9°F) and max 27°C (80.6°F). São Sebastião's February weather reaches an average high of 27°C (80.6°F) and an average low of 23.3°C (73.9°F), making it the warmest month. In February, the heat index is appraised at a hot 30°C (86°F). Weather in February »Weather in March
March, the first month of the autumn in São Sebastião, is also a moderately hot month, with temperature in the range of an average low of 22.8°C (73°F) and an average high of 25.8°C (78.4°F). In March, São Sebastião notes an average high-temperature of a still warm 25.8°C (78.4°F), hardly different from the preceding month. Weather in March »Weather in April
April, like March, in São Sebastião, Brazil, is another warm autumn month, with an average temperature varying between 21.2°C (70.2°F) and 24.7°C (76.5°F). São Sebastião records an average high-temperature of a still moderately hot 24.7°C (76.5°F) in April, maintaining a close correlation with March's 25.8°C (78.4°F). Weather in April »Weather in May
The last month of the autumn, May, is another warm month in São Sebastião, Brazil, with an average temperature varying between 19.5°C (67.1°F) and 23°C (73.4°F). The shift into May uncovers an average high-temperature of a still moderately hot 23°C (73.4°F), subtly different from the previous month. Weather in May »Weather in June
The first month of the winter, June, is also an agreeable month in São Sebastião, Brazil, with an average temperature fluctuating between 18.3°C (64.9°F) and 22.1°C (71.8°F). The shift into June reveals an average high-temperature of an agreeable 22.1°C (71.8°F), closely mirroring May's climate. Weather in June »Weather in July
July, the same as June, in São Sebastião, Brazil, is an agreeable winter month, with an average temperature varying between 21.7°C (71.1°F) and 17.8°C (64°F). The months of July and August bring the lowest temperatures, averaging a high of 21.7°C (71.1°F). Weather in July »Weather in August
August, the last month of the winter in São Sebastião, is also an agreeable month, with temperature in the range of an average low of 17.8°C (64°F) and an average high of 21.7°C (71.1°F). During July and August, São Sebastião experiences its coldest period, with an average high-temperature of 21.7°C (71.1°F). Weather in August »Weather in September
The first month of the spring, September, is also an agreeable month in São Sebastião, Brazil, with temperature in the range of an average low of 18.5°C (65.3°F) and an average high of 22.3°C (72.1°F). The shift into September finds São Sebastião at an average high-temperature of a still pleasant 22.3°C (72.1°F), closely comparable to August's conditions. Weather in September »Weather in October
October is a warm spring month in São Sebastião, Brazil, with an average temperature fluctuating between 19.8°C (67.6°F) and 23.3°C (73.9°F). The arrival of October records an average high-temperature of a moderately hot 23.3°C (73.9°F), closely related to the 22.3°C (72.1°F) observed in September. Weather in October »Weather in November
November, the last month of the spring in São Sebastião, is also a moderately hot month, with an average temperature fluctuating between 20.5°C (68.9°F) and 23.6°C (74.5°F). The transition into November marks the average high-temperature at a still warm 23.6°C (74.5°F), differing minimally from October's 23.3°C (73.9°F). Weather in November »Weather in December
The first month of the summer, December, is still a warm month in São Sebastião, Brazil, with an average temperature fluctuating between 25.6°C (78.1°F) and 22.2°C (72°F). São Sebastião starts December with an average high-temperature of a still moderately hot 25.6°C (78.1°F), a minor shift from November's 23.6°C (74.5°F). Weather in December »Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In São Sebastião, Brazil, during the entire year, the rain falls for 210.2 days and collects up to 818mm (32.2") of precipitation.
January is the month with the highest UV index, with an average maximum UV index of 7.
February is the warmest month in São Sebastião, exhibiting average temperatures of 27°C (80.6°F) at the peak and 23.3°C (73.9°F) at the base.
February is the month with the most rainfall in São Sebastião, Brazil. Rain falls for 19.8 days and accumulates 133mm (5.24") of precipitation.
February is the month with the warmest seawater in São Sebastião, with an average sea temperature of 26.5°C (79.7°F).
February and May, with an average of 8.1h of sunshine, are months with the most sunshine in São Sebastião.
The months with the lowest UV index are April, May, July through September, with an average maximum UV index of 5.
With an average of 10h and 42min of daylight, June has the shortest days of the year.
The coldest period falls in July and August, when the average high-temperature reaches 21.7°C (71.1°F).
August is the least humid month, with an average relative humidity of 80%.
August is the month with the least rainfall in São Sebastião, Brazil. Rain falls for 10.8 days and accumulates 37mm (1.46") of precipitation.
With an average sea temperature of 21.2°C (70.2°F), September is the month with the coldest seawater.
October and November, with an average of 7h of sunshine, are months with the least sunshine in São Sebastião.
The most humid month in São Sebastião is November, with an average relative humidity of 86%.
The month with the longest days is December, with an average of 13h and 36min of daylight.
São Sebastião, Brazil, does not observe Daylight Saving Time (DST). -03 timezone is used over the entire year.
Average temperature
São Sebastião, Brazil
The warmest month (with the highest average high temperature) is February (27°C).
The months with the lowest average high temperature are July and August (21.7°C).
The month with the highest average low temperature is February (23.3°C).
The coldest months (with the lowest average low temperature) are July and August (17.8°C).
Average pressure
São Sebastião, Brazil
- Average pressure in January:
1012.5mbar - Average pressure in February:
1012.8mbar - Average pressure in March:
1013.8mbar - Average pressure in April:
1015.8mbar - Average pressure in May:
1017.4mbar - Average pressure in June:
1019.4mbar
- Average pressure in July:
1020.1mbar - Average pressure in August:
1019.7mbar - Average pressure in September:
1017.4mbar - Average pressure in October:
1014.9mbar - Average pressure in November:
1013mbar - Average pressure in December:
1011.8mbar
The month with the highest atmospheric pressure is July (1020.1mbar).
The month with the lowest atmospheric pressure is December (1011.8mbar).
Average wind speed
São Sebastião, Brazil
- Average wind speed in January:
11.2km/h - Average wind speed in February:
11.2km/h - Average wind speed in March:
11.6km/h - Average wind speed in April:
11.9km/h - Average wind speed in May:
12.4km/h - Average wind speed in June:
12.2km/h
- Average wind speed in July:
13.1km/h - Average wind speed in August:
13.8km/h - Average wind speed in September:
13.8km/h - Average wind speed in October:
13.6km/h - Average wind speed in November:
13.3km/h - Average wind speed in December:
11.8km/h
The windiest months (with the highest average wind speed) are August and September (13.8km/h).
The calmest months (with the lowest average wind speed) are January and February (11.2km/h).
Average humidity
São Sebastião, Brazil
The month with the highest relative humidity is November (86%).
The month with the lowest relative humidity is August (80%).
Average rainfall
São Sebastião, Brazil
- Average rainfall in January:
116mm - Average rainfall in February:
133mm - Average rainfall in March:
92mm - Average rainfall in April:
52mm - Average rainfall in May:
45mm - Average rainfall in June:
41mm
The wettest month (with the highest rainfall) is February (133mm).
The driest month (with the least rainfall) is August (37mm).
Average rainfall days
São Sebastião, Brazil
- Average rainfall days in January:
24.1 days - Average rainfall days in February:
19.8 days - Average rainfall days in March:
22.4 days - Average rainfall days in April:
17.8 days - Average rainfall days in May:
16 days - Average rainfall days in June:
12.3 days
- Average rainfall days in July:
11.4 days - Average rainfall days in August:
10.8 days - Average rainfall days in September:
14.6 days - Average rainfall days in October:
19.5 days - Average rainfall days in November:
18.6 days - Average rainfall days in December:
22.9 days
The month with the highest number of rainy days is January (24.1 days).
The month with the least rainy days is August (10.8 days).
Average sea temperature
São Sebastião, Brazil
The best month for swimming (with the highest average sea temperature) is February (26.5°C).
The coldest month (with the lowest average sea temperature) is September (21.2°C).
Average daylight / Average sunshine
São Sebastião, Brazil
- Average daylight in January:
13h and 24min - Average daylight in February:
12h and 54min - Average daylight in March:
12h and 12min - Average daylight in April:
11h and 30min - Average daylight in May:
11h and 0min - Average daylight in June:
10h and 42min
- Average daylight in July:
10h and 48min - Average daylight in August:
11h and 18min - Average daylight in September:
12h and 0min - Average daylight in October:
12h and 42min - Average daylight in November:
13h and 18min - Average daylight in December:
13h and 36min
The month with the longest days is December (Average daylight: 13h and 36min).
The month with the shortest days is June (Average daylight: 10h and 42min).
- Average sunshine in January:
7h and 54min - Average sunshine in February:
8h and 6min - Average sunshine in March:
8h and 0min - Average sunshine in April:
7h and 54min - Average sunshine in May:
8h and 6min - Average sunshine in June:
7h and 48min
- Average sunshine in July:
7h and 42min - Average sunshine in August:
7h and 36min - Average sunshine in September:
7h and 30min - Average sunshine in October:
7h and 0min - Average sunshine in November:
7h and 0min - Average sunshine in December:
7h and 36min
The months with the most sunshine are February and May (Average sunshine: 8h and 6min).
The months with the least sunshine are October and November (Average sunshine: 7h and 0min).
Average sunshine days
São Sebastião, Brazil
- Average sunshine days in January:
4.5 days - Average sunshine days in February:
4.8 days - Average sunshine days in March:
5.7 days - Average sunshine days in April:
8.5 days - Average sunshine days in May:
12.4 days - Average sunshine days in June:
15.2 days
- Average sunshine days in July:
16.4 days - Average sunshine days in August:
17.4 days - Average sunshine days in September:
11.7 days - Average sunshine days in October:
8.2 days - Average sunshine days in November:
8.7 days - Average sunshine days in December:
5.9 days
The month with the most sunshine days is August (17.4 days).
The month with the least sunshine days is January (4.5 days).
Average UV index
São Sebastião, Brazil
The month with the highest UV index is January (UV index 7).
The months with the lowest UV index are April, May, July, August and September (UV index 5).
Average cloud cover
São Sebastião, Brazil
The month with the most cloud cover is November (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 34).
Average visibility
São Sebastião, Brazil
The months with the highest visibility are January, February, March, April, May, June, July, August, September and December (10km).
The months with the lowest visibility are October and November (9km).
