São Sebastião weather in September
In September, São Sebastião sees average daytime highs of 30°C and overnight lows near 18°C, with 28 mm of rain across 4.8 wet days and about 11.9 hours of daylight. It is the 1st-warmest and 8th-wettest month of the year here.
Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 53% of the time in September, and the air most often feels dry.
Daylight stretches from about 11 h 42 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is São Sebastião's 4th-clearest and 2nd-windiest month. For the whole year in context, see São Sebastião's year-round climate.
- Daytime high
- 30°
- 1st warmest
- Overnight low
- 18°
- 5th coldest
- Rainfall
- 28 mm
- 4.8 wet days
- Daylight
- 11 h 54 min
- 7:08 AM – 7:03 PM
- Cloud cover
- 40%
- 4th clearest
- Wind
- 9 km/h
- 2nd windiest
- Solar energy
- 6.13 kWh/m²
- Travel score
- 5.6
- out of 10
Temperature in September
Day-to-day highs hold fairly steady near 30°C through the month.
A typical September day in São Sebastião reaches about 30°C in the afternoon and slips back to 18°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 33°C. Set against its neighbours, September runs about 2°C warmer than August and on par with October.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 |
| Avg low (°C) | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 30 | 16 |
| 2 | 30 | 17 |
| 3 | 30 | 17 |
| 4 | 30 | 17 |
| 5 | 30 | 17 |
| 6 | 30 | 17 |
| 7 | 30 | 17 |
| 8 | 30 | 17 |
| 9 | 30 | 17 |
| 10 | 30 | 17 |
| 11 | 30 | 17 |
| 12 | 30 | 17 |
| 13 | 31 | 18 |
| 14 | 31 | 18 |
| 15 | 31 | 18 |
| 16 | 31 | 18 |
| 17 | 31 | 18 |
| 18 | 31 | 18 |
| 19 | 31 | 18 |
| 20 | 31 | 18 |
| 21 | 31 | 18 |
| 22 | 31 | 18 |
| 23 | 31 | 18 |
| 24 | 31 | 18 |
| 25 | 31 | 18 |
| 26 | 31 | 19 |
| 27 | 31 | 19 |
| 28 | 31 | 19 |
| 29 | 31 | 19 |
| 30 | 31 | 19 |
São Sebastião weather by month
How September compares with the rest of the year at a glance. September is the 1st-warmest and 8th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 28° / 19° | 203 | 21 | 12.8 | 4.6 |
| Feb | 28° / 19° | 160 | 18.2 | 12.5 | 4.8 |
| Mar | 28° / 19° | 181 | 20.1 | 12.1 | 4.8 |
| Apr | 28° / 18° | 71 | 11.3 | 11.7 | 6.1 |
| May | 27° / 16° | 17 | 3.2 | 11.3 | 7.7 |
| Jun | 27° / 14° | 4 | 0.6 | 11.1 | 8.4 |
| Jul | 27° / 14° | 0 | 0 | 11.1 | 8.6 |
| Aug | 29° / 15° | 5 | 1.2 | 11.5 | 7.5 |
| Sep | 30° / 18° | 28 | 4.8 | 11.9 | 5.6 |
| Oct | 30° / 19° | 104 | 13.3 | 12.4 | 4.6 |
| Nov | 28° / 19° | 201 | 21.2 | 12.7 | 4.3 |
| Dec | 28° / 19° | 225 | 23.2 | 12.9 | 4.3 |
Cloud cover in September
The sky is clear or mostly clear about 53% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 28%. Skies tend to cloud over as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 83 | 82 | 81 | 80 | 80 | 80 | 79 | 78 | 78 | 77 | 77 | 75 | 75 | 74 | 73 | 73 | 72 | 71 | 70 | 69 | 67 | 66 | 66 | 65 | 63 | 62 | 62 | 60 | 60 | 59 |
| Cloudier (%) | 17 | 18 | 19 | 20 | 20 | 20 | 21 | 22 | 22 | 23 | 23 | 25 | 25 | 26 | 27 | 27 | 28 | 29 | 30 | 31 | 33 | 34 | 34 | 35 | 37 | 38 | 38 | 40 | 40 | 41 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 83 | 17 |
| 2 | 82 | 18 |
| 3 | 81 | 19 |
| 4 | 80 | 20 |
| 5 | 80 | 20 |
| 6 | 80 | 20 |
| 7 | 79 | 21 |
| 8 | 78 | 22 |
| 9 | 78 | 22 |
| 10 | 77 | 23 |
| 11 | 77 | 23 |
| 12 | 75 | 25 |
| 13 | 75 | 25 |
| 14 | 74 | 26 |
| 15 | 73 | 27 |
| 16 | 73 | 27 |
| 17 | 72 | 28 |
| 18 | 71 | 29 |
| 19 | 70 | 30 |
| 20 | 69 | 31 |
| 21 | 67 | 33 |
| 22 | 66 | 34 |
| 23 | 66 | 34 |
| 24 | 65 | 35 |
| 25 | 63 | 37 |
| 26 | 62 | 38 |
| 27 | 62 | 38 |
| 28 | 60 | 40 |
| 29 | 60 | 40 |
| 30 | 59 | 41 |
Chance of precipitation in September
São Sebastião gets around 28 mm of rain over 4.8 wet days in September. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 17% and peaks near 32% on the wettest days. The odds climb toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 17 | 18 | 19 | 21 | 22 | 23 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 |
| Rain chance (%) | |
|---|---|
| 1 | 7 |
| 2 | 7 |
| 3 | 7 |
| 4 | 7 |
| 5 | 7 |
| 6 | 7 |
| 7 | 8 |
| 8 | 8 |
| 9 | 8 |
| 10 | 9 |
| 11 | 10 |
| 12 | 11 |
| 13 | 12 |
| 14 | 13 |
| 15 | 14 |
| 16 | 15 |
| 17 | 17 |
| 18 | 18 |
| 19 | 19 |
| 20 | 21 |
| 21 | 22 |
| 22 | 23 |
| 23 | 25 |
| 24 | 26 |
| 25 | 27 |
| 26 | 28 |
| 27 | 29 |
| 28 | 30 |
| 29 | 31 |
| 30 | 32 |
Humidity in September
Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the dry band about 58% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 77 | 77 | 76 | 76 | 76 | 76 | 76 | 75 | 74 | 73 | 72 | 71 | 68 | 66 | 64 | 62 | 59 | 56 | 54 | 51 | 48 | 45 | 43 | 40 | 38 | 36 | 34 | 33 | 31 | 31 |
| Comfortable (%) | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 18 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 26 |
| Humid (%) | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 10 | 10 | 11 | 12 | 13 | 14 | 15 | 17 | 18 | 19 | 21 | 23 | 24 | 26 | 27 | 29 | 31 | 32 | 33 | 34 | 35 |
| Muggy (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 6 | 6 | 7 | 7 | 8 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 77 | 16 | 7 | 0 |
| 2 | 77 | 16 | 7 | 0 |
| 3 | 76 | 16 | 8 | 0 |
| 4 | 76 | 16 | 8 | 0 |
| 5 | 76 | 16 | 8 | 0 |
| 6 | 76 | 16 | 8 | 0 |
| 7 | 76 | 16 | 8 | 0 |
| 8 | 75 | 16 | 9 | 0 |
| 9 | 74 | 17 | 9 | 0 |
| 10 | 73 | 17 | 10 | 0 |
| 11 | 72 | 18 | 10 | 0 |
| 12 | 71 | 18 | 11 | 0 |
| 13 | 68 | 19 | 12 | 1 |
| 14 | 66 | 20 | 13 | 1 |
| 15 | 64 | 21 | 14 | 1 |
| 16 | 62 | 22 | 15 | 1 |
| 17 | 59 | 23 | 17 | 1 |
| 18 | 56 | 24 | 18 | 2 |
| 19 | 54 | 25 | 19 | 2 |
| 20 | 51 | 26 | 21 | 2 |
| 21 | 48 | 27 | 23 | 3 |
| 22 | 45 | 27 | 24 | 3 |
| 23 | 43 | 28 | 26 | 4 |
| 24 | 40 | 28 | 27 | 4 |
| 25 | 38 | 28 | 29 | 5 |
| 26 | 36 | 28 | 31 | 6 |
| 27 | 34 | 28 | 32 | 6 |
| 28 | 33 | 27 | 33 | 7 |
| 29 | 31 | 27 | 34 | 7 |
| 30 | 31 | 26 | 35 | 8 |
Wind in September
Winds average 9 km/h in September.
Across September, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 10 | calm |
| 2 | 10 | calm |
| 3 | 10 | calm |
| 4 | 10 | calm |
| 5 | 10 | calm |
| 6 | 10 | calm |
| 7 | 10 | calm |
| 8 | 10 | calm |
| 9 | 10 | calm |
| 10 | 10 | calm |
| 11 | 10 | calm |
| 12 | 10 | calm |
| 13 | 10 | calm |
| 14 | 10 | calm |
| 15 | 10 | calm |
| 16 | 9 | calm |
| 17 | 9 | calm |
| 18 | 9 | calm |
| 19 | 9 | calm |
| 20 | 9 | calm |
| 21 | 9 | calm |
| 22 | 9 | calm |
| 23 | 9 | calm |
| 24 | 9 | calm |
| 25 | 9 | calm |
| 26 | 9 | calm |
| 27 | 9 | calm |
| 28 | 9 | calm |
| 29 | 9 | calm |
| 30 | 9 | calm |
Sunrise & sunset in September
Daylight runs from about 11 h 42 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 24 minutes over September. Sunrise moves from 7:20 AM to 6:57 AM, and sunset from 7:01 PM to 7:04 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 11.9 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 |
| Sunrise (AM) | 7:20 | 7:19 | 7:19 | 7:18 | 7:17 | 7:16 | 7:15 | 7:15 | 7:14 | 7:13 | 7:12 | 7:11 | 7:11 | 7:10 | 7:09 | 7:08 | 7:07 | 7:06 | 7:06 | 7:05 | 7:04 | 7:03 | 7:02 | 7:01 | 7:01 | 7:00 | 6:59 | 6:58 | 6:57 | 6:57 |
| Sunset (PM) | 7:01 | 7:02 | 7:02 | 7:02 | 7:02 | 7:02 | 7:02 | 7:02 | 7:02 | 7:02 | 7:02 | 7:02 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:03 | 7:04 | 7:04 | 7:04 | 7:04 | 7:04 | 7:04 | 7:04 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.7 | 7:20 | 7:01 |
| 2 | 11.7 | 7:19 | 7:02 |
| 3 | 11.7 | 7:19 | 7:02 |
| 4 | 11.7 | 7:18 | 7:02 |
| 5 | 11.7 | 7:17 | 7:02 |
| 6 | 11.8 | 7:16 | 7:02 |
| 7 | 11.8 | 7:15 | 7:02 |
| 8 | 11.8 | 7:15 | 7:02 |
| 9 | 11.8 | 7:14 | 7:02 |
| 10 | 11.8 | 7:13 | 7:02 |
| 11 | 11.8 | 7:12 | 7:02 |
| 12 | 11.9 | 7:11 | 7:02 |
| 13 | 11.9 | 7:11 | 7:03 |
| 14 | 11.9 | 7:10 | 7:03 |
| 15 | 11.9 | 7:09 | 7:03 |
| 16 | 11.9 | 7:08 | 7:03 |
| 17 | 11.9 | 7:07 | 7:03 |
| 18 | 11.9 | 7:06 | 7:03 |
| 19 | 12.0 | 7:06 | 7:03 |
| 20 | 12.0 | 7:05 | 7:03 |
| 21 | 12.0 | 7:04 | 7:03 |
| 22 | 12.0 | 7:03 | 7:03 |
| 23 | 12.0 | 7:02 | 7:03 |
| 24 | 12.0 | 7:01 | 7:04 |
| 25 | 12.0 | 7:01 | 7:04 |
| 26 | 12.1 | 7:00 | 7:04 |
| 27 | 12.1 | 6:59 | 7:04 |
| 28 | 12.1 | 6:58 | 7:04 |
| 29 | 12.1 | 6:57 | 7:04 |
| 30 | 12.1 | 6:57 | 7:04 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 6.13 kWh/m².
For context, solar energy here swings from a low near 4.62 kWh/m² to a high of 6.14 kWh/m² in October across the year — September's 6.13 kWh/m² sits near the top of that range.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.0 | 6.0 | 6.0 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 |
| Level | Bright | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.0 | Bright |
| 2 | 6.0 | Intense |
| 3 | 6.0 | Intense |
| 4 | 6.1 | Intense |
| 5 | 6.1 | Intense |
| 6 | 6.1 | Intense |
| 7 | 6.1 | Intense |
| 8 | 6.1 | Intense |
| 9 | 6.1 | Intense |
| 10 | 6.2 | Intense |
| 11 | 6.2 | Intense |
| 12 | 6.2 | Intense |
| 13 | 6.2 | Intense |
| 14 | 6.2 | Intense |
| 15 | 6.1 | Intense |
| 16 | 6.1 | Intense |
| 17 | 6.1 | Intense |
| 18 | 6.1 | Intense |
| 19 | 6.1 | Intense |
| 20 | 6.1 | Intense |
| 21 | 6.1 | Intense |
| 22 | 6.1 | Intense |
| 23 | 6.1 | Intense |
| 24 | 6.1 | Intense |
| 25 | 6.1 | Intense |
| 26 | 6.1 | Intense |
| 27 | 6.1 | Intense |
| 28 | 6.1 | Intense |
| 29 | 6.1 | Intense |
| 30 | 6.1 | Intense |
Hazard calendar for São Sebastião
None of São Sebastião's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
São Sebastião's monsoon runs October–March, when most of the year's rain falls.
Is September a good time to visit São Sebastião?
Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
September is a reasonable time to visit São Sebastião for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for São Sebastião in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, São Sebastião sees daytime highs around 30°C and nights near 18°C. Pack light clothes and sun protection. About 5 days see rain.
UV index in São Sebastião in September
Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in São Sebastião peaks around February 15 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 8 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 15 | 16 | 15 | 12 | 10 | 8 | 8 | 10 | 13 | 13 | 15 | 13 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 16 | Extreme |
| Mar | 15 | Extreme |
| Apr | 12 | Extreme |
| May | 10 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 10 | Very high |
| Sep | 13 | Extreme |
| Oct | 13 | Extreme |
| Nov | 15 | Extreme |
| Dec | 13 | Extreme |
Air quality in São Sebastião in September
Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.
Air quality in São Sebastião is worst in September — around 32 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (January, 11 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 11 | 13 | 15 | 14 | 15 | 13 | 13 | 15 | 32 | 21 | 13 | 12 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 13 | Moderate |
| Mar | 15 | Moderate |
| Apr | 14 | Moderate |
| May | 15 | Moderate |
| Jun | 13 | Moderate |
| Jul | 13 | Moderate |
| Aug | 15 | Moderate |
| Sep | 32 | Moderate |
| Oct | 21 | Moderate |
| Nov | 13 | Moderate |
| Dec | 12 | Moderate |
Where is São Sebastião?
São Sebastião sits at 15.9°S, 47.8°W, 1,048 m above sea level, in Brazil. The nearest listed city is Jardim Botânico, 6.0 km away.
Topography around São Sebastião
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Sebastião.
Within 3 km, the terrain around São Sebastião has only modest variations in elevation — a maximum elevation change of 233 m around an average of 968 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 343 m; within 80 km, large variations in elevation — a maximum elevation change of 779 m.
The land around São Sebastião is covered by grassland (34%), artificial surfaces (31%) and trees (23%) within 3 km, grassland (39%), trees (24%) and shrubs (21%) within 16 km, and grassland (34%), trees (25%) and cropland (22%) within 80 km.
Brazil travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / N
- 127 / 220 V · 60 Hz
- Prices
- ≈ 46% of US
- price level, 2025
- GDP per capita
- $10,713
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 89%
- of population, 2024
- Homicide rate
- 19.3
- per 100k, 2023
- Road deaths
- 16
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 482
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for São Sebastião (-15.9029°, -47.7761°, elevation 1,048 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).