São Sebastião do Caí weather in January
In January, São Sebastião do Caí sees average daytime highs of 29°C and overnight lows near 19°C, with 209 mm of rain across 17.6 wet days and about 13.7 hours of daylight. It is the 1st-warmest and 2nd-wettest month of the year here.
Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 28% of the time in January, and the air most often feels muggy.
Daylight stretches from about 13 h 54 min at the start of January to 13 h 24 min by month's end. Set against the rest of the year, January is São Sebastião do Caí's 8th-clearest and 8th-windiest month. For the whole year in context, see São Sebastião do Caí's year-round climate.
- Daytime high
- 29°
- 1st warmest
- Overnight low
- 19°
- 12th coldest
- Rainfall
- 209 mm
- 17.6 wet days
- Daylight
- 13 h 42 min
- 6:44 AM – 8:26 PM
- Cloud cover
- 61%
- 8th clearest
- Wind
- 8 km/h
- 8th windiest
- Solar energy
- 6.18 kWh/m²
- Travel score
- 4.7
- out of 10
Temperature in January
Day-to-day highs hold fairly steady near 29°C through the month.
A typical January day in São Sebastião do Caí reaches about 29°C in the afternoon and slips back to 19°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 33°C. Set against its neighbours, January runs on par with December and on par with February.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| Avg low (°C) | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 29 | 19 |
| 2 | 29 | 19 |
| 3 | 29 | 19 |
| 4 | 29 | 19 |
| 5 | 29 | 19 |
| 6 | 29 | 19 |
| 7 | 29 | 19 |
| 8 | 29 | 19 |
| 9 | 29 | 19 |
| 10 | 29 | 19 |
| 11 | 29 | 19 |
| 12 | 29 | 19 |
| 13 | 29 | 19 |
| 14 | 29 | 19 |
| 15 | 29 | 19 |
| 16 | 29 | 19 |
| 17 | 29 | 19 |
| 18 | 29 | 19 |
| 19 | 29 | 19 |
| 20 | 29 | 19 |
| 21 | 29 | 19 |
| 22 | 29 | 19 |
| 23 | 29 | 19 |
| 24 | 29 | 19 |
| 25 | 29 | 19 |
| 26 | 29 | 19 |
| 27 | 29 | 19 |
| 28 | 29 | 19 |
| 29 | 29 | 19 |
| 30 | 29 | 19 |
| 31 | 29 | 19 |
São Sebastião do Caí weather by month
How January compares with the rest of the year at a glance. January is the 1st-warmest and 2nd-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 29° / 19° | 209 | 17.6 | 13.7 | 4.7 |
| Feb | 28° / 19° | 180 | 16.6 | 13.1 | 4.8 |
| Mar | 27° / 18° | 154 | 15.2 | 12.2 | 5.8 |
| Apr | 24° / 15° | 142 | 11.2 | 11.3 | 6.6 |
| May | 21° / 12° | 136 | 10.4 | 10.5 | 6.4 |
| Jun | 19° / 10° | 144 | 10.3 | 10.1 | 6.0 |
| Jul | 19° / 9° | 180 | 10.8 | 10.3 | 6.0 |
| Aug | 21° / 11° | 145 | 10.7 | 10.9 | 6.4 |
| Sep | 22° / 12° | 178 | 12.5 | 11.8 | 6.1 |
| Oct | 24° / 14° | 216 | 14.8 | 12.7 | 6.0 |
| Nov | 26° / 16° | 164 | 12.8 | 13.5 | 6.2 |
| Dec | 28° / 18° | 182 | 15.1 | 13.9 | 5.4 |
Cloud cover in January
The sky is clear or mostly clear about 28% of the time in January.
Beyond those clear spells, partly cloudy skies cover about 20% of January, with mostly cloudy or overcast conditions the remaining 51%.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 49 | 48 | 48 | 48 | 48 | 48 | 47 | 47 | 48 | 46 | 46 | 47 | 47 | 47 | 47 | 47 | 47 | 47 |
| Cloudier (%) | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 51 | 52 | 52 | 52 | 52 | 52 | 53 | 53 | 52 | 54 | 54 | 53 | 53 | 53 | 53 | 53 | 53 | 53 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 50 | 50 |
| 2 | 50 | 50 |
| 3 | 50 | 50 |
| 4 | 50 | 50 |
| 5 | 50 | 50 |
| 6 | 50 | 50 |
| 7 | 50 | 50 |
| 8 | 50 | 50 |
| 9 | 50 | 50 |
| 10 | 50 | 50 |
| 11 | 50 | 50 |
| 12 | 50 | 50 |
| 13 | 50 | 50 |
| 14 | 49 | 51 |
| 15 | 48 | 52 |
| 16 | 48 | 52 |
| 17 | 48 | 52 |
| 18 | 48 | 52 |
| 19 | 48 | 52 |
| 20 | 47 | 53 |
| 21 | 47 | 53 |
| 22 | 48 | 52 |
| 23 | 46 | 54 |
| 24 | 46 | 54 |
| 25 | 47 | 53 |
| 26 | 47 | 53 |
| 27 | 47 | 53 |
| 28 | 47 | 53 |
| 29 | 47 | 53 |
| 30 | 47 | 53 |
| 31 | 47 | 53 |
Chance of precipitation in January
São Sebastião do Caí gets around 209 mm of rain over 17.6 wet days in January. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 57% and peaks near 62% 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 51 | 51 | 52 | 53 | 53 | 54 | 54 | 55 | 55 | 56 | 56 | 57 | 57 | 57 | 57 | 58 | 58 | 58 | 58 | 58 | 58 | 59 | 59 | 59 | 60 | 60 | 61 | 61 | 62 | 62 | 62 |
| Rain chance (%) | |
|---|---|
| 1 | 51 |
| 2 | 51 |
| 3 | 52 |
| 4 | 53 |
| 5 | 53 |
| 6 | 54 |
| 7 | 54 |
| 8 | 55 |
| 9 | 55 |
| 10 | 56 |
| 11 | 56 |
| 12 | 57 |
| 13 | 57 |
| 14 | 57 |
| 15 | 57 |
| 16 | 58 |
| 17 | 58 |
| 18 | 58 |
| 19 | 58 |
| 20 | 58 |
| 21 | 58 |
| 22 | 59 |
| 23 | 59 |
| 24 | 59 |
| 25 | 60 |
| 26 | 60 |
| 27 | 61 |
| 28 | 61 |
| 29 | 62 |
| 30 | 62 |
| 31 | 62 |
Humidity in January
Most of January feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, January lands in the muggy band about 43% of days. Sticky, muggy-or-worse air turns up on roughly 71% of them.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Comfortable (%) | 9 | 9 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Humid (%) | 24 | 24 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 |
| Muggy (%) | 39 | 39 | 39 | 40 | 40 | 41 | 41 | 41 | 42 | 42 | 43 | 44 | 44 | 45 | 45 | 45 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 45 | 45 | 44 | 44 | 43 | 42 | 41 |
| Oppressive (%) | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 25 | 25 | 26 | 26 | 26 | 27 | 28 | 29 | 30 | 31 | 31 | 32 | 33 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 1 | 9 | 24 | 39 | 27 |
| 2 | 1 | 9 | 24 | 39 | 27 |
| 3 | 1 | 8 | 23 | 39 | 28 |
| 4 | 1 | 8 | 23 | 40 | 28 |
| 5 | 1 | 8 | 23 | 40 | 28 |
| 6 | 1 | 7 | 23 | 41 | 28 |
| 7 | 1 | 7 | 22 | 41 | 28 |
| 8 | 1 | 7 | 22 | 41 | 28 |
| 9 | 1 | 7 | 22 | 42 | 28 |
| 10 | 1 | 6 | 22 | 42 | 28 |
| 11 | 2 | 6 | 21 | 43 | 28 |
| 12 | 2 | 6 | 21 | 44 | 27 |
| 13 | 2 | 6 | 21 | 44 | 27 |
| 14 | 2 | 6 | 21 | 45 | 27 |
| 15 | 2 | 6 | 21 | 45 | 26 |
| 16 | 2 | 6 | 21 | 45 | 26 |
| 17 | 2 | 6 | 21 | 46 | 26 |
| 18 | 2 | 6 | 21 | 46 | 26 |
| 19 | 2 | 6 | 21 | 46 | 25 |
| 20 | 2 | 6 | 21 | 46 | 25 |
| 21 | 2 | 6 | 20 | 46 | 26 |
| 22 | 2 | 6 | 20 | 46 | 26 |
| 23 | 1 | 6 | 20 | 46 | 26 |
| 24 | 1 | 6 | 20 | 46 | 27 |
| 25 | 1 | 6 | 20 | 45 | 28 |
| 26 | 1 | 6 | 20 | 45 | 29 |
| 27 | 1 | 6 | 19 | 44 | 30 |
| 28 | 1 | 6 | 19 | 44 | 31 |
| 29 | 1 | 6 | 19 | 43 | 31 |
| 30 | 1 | 6 | 19 | 42 | 32 |
| 31 | 1 | 6 | 19 | 41 | 33 |
Wind in January
Winds average 8 km/h in January.
Across January, daily wind ranges from about 8 km/h on the calmest days to 8 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| 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 | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 8 | calm |
| 2 | 8 | calm |
| 3 | 8 | calm |
| 4 | 8 | calm |
| 5 | 8 | calm |
| 6 | 8 | calm |
| 7 | 8 | calm |
| 8 | 8 | calm |
| 9 | 8 | calm |
| 10 | 8 | calm |
| 11 | 8 | calm |
| 12 | 8 | calm |
| 13 | 8 | calm |
| 14 | 8 | calm |
| 15 | 8 | calm |
| 16 | 8 | calm |
| 17 | 8 | calm |
| 18 | 8 | calm |
| 19 | 8 | calm |
| 20 | 8 | calm |
| 21 | 8 | calm |
| 22 | 8 | calm |
| 23 | 8 | calm |
| 24 | 8 | calm |
| 25 | 8 | calm |
| 26 | 8 | calm |
| 27 | 8 | calm |
| 28 | 8 | calm |
| 29 | 8 | calm |
| 30 | 8 | calm |
| 31 | 8 | calm |
Sunrise & sunset in January
Daylight runs from about 13 h 54 min at the start of January to 13 h 24 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 30 minutes over January. Sunrise moves from 6:33 AM to 6:56 AM, and sunset from 8:25 PM to 8:22 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 13.9 | 13.9 | 13.9 | 13.8 | 13.8 | 13.8 | 13.8 | 13.8 | 13.8 | 13.8 | 13.8 | 13.8 | 13.7 | 13.7 | 13.7 | 13.7 | 13.7 | 13.7 | 13.7 | 13.6 | 13.6 | 13.6 | 13.6 | 13.6 | 13.5 | 13.5 | 13.5 | 13.5 | 13.5 | 13.4 | 13.4 |
| Sunrise (AM) | 6:33 | 6:33 | 6:34 | 6:35 | 6:35 | 6:36 | 6:37 | 6:37 | 6:38 | 6:39 | 6:40 | 6:40 | 6:41 | 6:42 | 6:43 | 6:44 | 6:44 | 6:45 | 6:46 | 6:47 | 6:48 | 6:49 | 6:49 | 6:50 | 6:51 | 6:52 | 6:53 | 6:54 | 6:54 | 6:55 | 6:56 |
| Sunset (PM) | 8:25 | 8:25 | 8:25 | 8:25 | 8:26 | 8:26 | 8:26 | 8:26 | 8:26 | 8:26 | 8:26 | 8:26 | 8:26 | 8:26 | 8:26 | 8:26 | 8:26 | 8:26 | 8:26 | 8:25 | 8:25 | 8:25 | 8:25 | 8:24 | 8:24 | 8:24 | 8:23 | 8:23 | 8:23 | 8:22 | 8:22 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.9 | 6:33 | 8:25 |
| 2 | 13.9 | 6:33 | 8:25 |
| 3 | 13.9 | 6:34 | 8:25 |
| 4 | 13.8 | 6:35 | 8:25 |
| 5 | 13.8 | 6:35 | 8:26 |
| 6 | 13.8 | 6:36 | 8:26 |
| 7 | 13.8 | 6:37 | 8:26 |
| 8 | 13.8 | 6:37 | 8:26 |
| 9 | 13.8 | 6:38 | 8:26 |
| 10 | 13.8 | 6:39 | 8:26 |
| 11 | 13.8 | 6:40 | 8:26 |
| 12 | 13.8 | 6:40 | 8:26 |
| 13 | 13.7 | 6:41 | 8:26 |
| 14 | 13.7 | 6:42 | 8:26 |
| 15 | 13.7 | 6:43 | 8:26 |
| 16 | 13.7 | 6:44 | 8:26 |
| 17 | 13.7 | 6:44 | 8:26 |
| 18 | 13.7 | 6:45 | 8:26 |
| 19 | 13.7 | 6:46 | 8:26 |
| 20 | 13.6 | 6:47 | 8:25 |
| 21 | 13.6 | 6:48 | 8:25 |
| 22 | 13.6 | 6:49 | 8:25 |
| 23 | 13.6 | 6:49 | 8:25 |
| 24 | 13.6 | 6:50 | 8:24 |
| 25 | 13.5 | 6:51 | 8:24 |
| 26 | 13.5 | 6:52 | 8:24 |
| 27 | 13.5 | 6:53 | 8:23 |
| 28 | 13.5 | 6:54 | 8:23 |
| 29 | 13.5 | 6:54 | 8:23 |
| 30 | 13.4 | 6:55 | 8:22 |
| 31 | 13.4 | 6:56 | 8:22 |
Solar energy in January
Average shortwave solar energy reaching the ground each day in January, about 6.18 kWh/m².
For context, solar energy here swings from a low near 2.41 kWh/m² to a high of 6.44 kWh/m² in December across the year — January's 6.18 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.4 | 6.4 | 6.4 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.1 | 6.1 | 6.1 | 6.1 | 6.1 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 5.9 |
| Level | 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 | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.4 | Intense |
| 2 | 6.4 | Intense |
| 3 | 6.4 | Intense |
| 4 | 6.3 | Intense |
| 5 | 6.3 | Intense |
| 6 | 6.3 | Intense |
| 7 | 6.3 | Intense |
| 8 | 6.3 | Intense |
| 9 | 6.3 | Intense |
| 10 | 6.3 | Intense |
| 11 | 6.3 | Intense |
| 12 | 6.3 | Intense |
| 13 | 6.2 | Intense |
| 14 | 6.2 | Intense |
| 15 | 6.2 | Intense |
| 16 | 6.2 | Intense |
| 17 | 6.2 | Intense |
| 18 | 6.2 | Intense |
| 19 | 6.2 | Intense |
| 20 | 6.2 | Intense |
| 21 | 6.1 | Intense |
| 22 | 6.1 | Intense |
| 23 | 6.1 | Intense |
| 24 | 6.1 | Intense |
| 25 | 6.1 | Intense |
| 26 | 6.0 | Intense |
| 27 | 6.0 | Intense |
| 28 | 6.0 | Intense |
| 29 | 6.0 | Bright |
| 30 | 6.0 | Bright |
| 31 | 5.9 | Bright |
Is January a good time to visit São Sebastião do Caí?
Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
January is a reasonable time to visit São Sebastião do Caí for sightseeing.
What to pack for São Sebastião do Caí in January
From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In January, São Sebastião do Caí sees daytime highs around 29°C and nights near 19°C. Pack light clothes, rain gear and sun protection. About 18 days see rain.
UV index in São Sebastião do Caí in January
Clear-sky midday UV in January 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 do Caí peaks around January 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 4 (moderate).
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) | 13 | 12 | 10 | 8 | 5 | 4 | 4 | 5 | 8 | 8 | 12 | 13 |
| Level | Extreme | Extreme | Very high | Very high | Moderate | Moderate | Moderate | High | Very high | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 12 | Extreme |
| Mar | 10 | Very high |
| Apr | 8 | Very high |
| May | 5 | Moderate |
| Jun | 4 | Moderate |
| Jul | 4 | Moderate |
| Aug | 5 | High |
| Sep | 8 | Very high |
| Oct | 8 | Very high |
| Nov | 12 | Extreme |
| Dec | 13 | Extreme |
Air quality in São Sebastião do Caí in January
Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.
Air quality in São Sebastião do Caí is worst in September — around 17 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 10 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) | 10 | 10 | 10 | 12 | 12 | 11 | 13 | 16 | 17 | 12 | 11 | 10 |
| Level | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 10 | Good |
| Mar | 10 | Good |
| Apr | 12 | Good |
| May | 12 | Good |
| Jun | 11 | Good |
| Jul | 13 | Moderate |
| Aug | 16 | Moderate |
| Sep | 17 | Moderate |
| Oct | 12 | Good |
| Nov | 11 | Good |
| Dec | 10 | Good |
Where is São Sebastião do Caí?
São Sebastião do Caí sits at 29.6°S, 51.4°W, 16 m above sea level, in Brazil. The nearest listed city is Montenegro, 14 km away.
Topography around São Sebastião do Caí
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Sebastião do Caí.
Within 3 km, the terrain around São Sebastião do Caí has only modest variations in elevation — a maximum elevation change of 107 m around an average of 32 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 512 m; within 80 km, large variations in elevation — a maximum elevation change of 988 m.
The land around São Sebastião do Caí is covered by trees (69%) within 3 km, trees (73%) within 16 km, and trees (62%) 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 do Caí (-29.5867°, -51.3756°, elevation 16 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).