Jacareí weather in September
In September, Jacareí sees average daytime highs of 25°C and overnight lows near 15°C, with 76 mm of rain across 9.9 wet days and about 11.9 hours of daylight. It is the 8th-warmest and 7th-wettest month of the year here.
Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 37% of the time in September, and the air most often feels comfortable.
Daylight stretches from about 11 h 30 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Jacareí's 6th-clearest and 1st-windiest month. For the whole year in context, see Jacareí's year-round climate.
- Daytime high
- 25°
- 8th warmest
- Overnight low
- 15°
- 5th coldest
- Rainfall
- 76 mm
- 9.9 wet days
- Daylight
- 11 h 54 min
- 7:02 AM – 6:54 PM
- Cloud cover
- 57%
- 6th clearest
- Wind
- 8 km/h
- 1st windiest
- Solar energy
- 4.74 kWh/m²
- Travel score
- 6.8
- out of 10
Jacareí is human settlement in Brazil.
- Air quality
- Good
- PM10 24 µg/m³ · 2016
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in September
Day-to-day highs hold fairly steady near 25°C through the month.
A typical September day in Jacareí reaches about 25°C in the afternoon and slips back to 15°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 31°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than 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) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Avg low (°C) | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 25 | 14 |
| 2 | 25 | 14 |
| 3 | 25 | 14 |
| 4 | 25 | 14 |
| 5 | 25 | 14 |
| 6 | 25 | 14 |
| 7 | 25 | 14 |
| 8 | 25 | 15 |
| 9 | 25 | 15 |
| 10 | 25 | 15 |
| 11 | 26 | 15 |
| 12 | 26 | 15 |
| 13 | 26 | 15 |
| 14 | 25 | 15 |
| 15 | 25 | 15 |
| 16 | 25 | 15 |
| 17 | 25 | 15 |
| 18 | 25 | 15 |
| 19 | 25 | 15 |
| 20 | 25 | 15 |
| 21 | 25 | 15 |
| 22 | 25 | 15 |
| 23 | 25 | 15 |
| 24 | 25 | 15 |
| 25 | 25 | 15 |
| 26 | 25 | 16 |
| 27 | 25 | 16 |
| 28 | 25 | 16 |
| 29 | 25 | 16 |
| 30 | 25 | 16 |
Jacareí weather by month
How September compares with the rest of the year at a glance. September is the 8th-warmest and 7th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 28° / 20° | 226 | 22.1 | 13.3 | 4.4 |
| Feb | 28° / 20° | 171 | 18.5 | 12.8 | 4.3 |
| Mar | 28° / 19° | 139 | 18.1 | 12.2 | 5.2 |
| Apr | 26° / 17° | 57 | 9.5 | 11.5 | 6.7 |
| May | 24° / 15° | 57 | 7.6 | 10.9 | 7.3 |
| Jun | 23° / 13° | 38 | 5.1 | 10.6 | 7.8 |
| Jul | 23° / 12° | 44 | 5.1 | 10.7 | 7.8 |
| Aug | 24° / 13° | 35 | 5.2 | 11.2 | 7.9 |
| Sep | 25° / 15° | 76 | 9.9 | 11.9 | 6.8 |
| Oct | 26° / 17° | 109 | 13.6 | 12.5 | 5.9 |
| Nov | 27° / 18° | 142 | 16.6 | 13.1 | 5.4 |
| Dec | 28° / 19° | 172 | 20.1 | 13.4 | 4.8 |
Cloud cover in September
The sky is clear or mostly clear about 37% of the time in September.
Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 51%. 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 (%) | 63 | 62 | 61 | 60 | 59 | 58 | 58 | 57 | 55 | 54 | 53 | 52 | 51 | 51 | 50 | 49 | 47 | 46 | 45 | 45 | 44 | 43 | 41 | 41 | 39 | 39 | 38 | 38 | 36 | 36 |
| Cloudier (%) | 37 | 38 | 39 | 40 | 41 | 42 | 42 | 43 | 45 | 46 | 47 | 48 | 49 | 49 | 50 | 51 | 53 | 54 | 55 | 55 | 56 | 57 | 59 | 59 | 61 | 61 | 62 | 62 | 64 | 64 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 63 | 37 |
| 2 | 62 | 38 |
| 3 | 61 | 39 |
| 4 | 60 | 40 |
| 5 | 59 | 41 |
| 6 | 58 | 42 |
| 7 | 58 | 42 |
| 8 | 57 | 43 |
| 9 | 55 | 45 |
| 10 | 54 | 46 |
| 11 | 53 | 47 |
| 12 | 52 | 48 |
| 13 | 51 | 49 |
| 14 | 51 | 49 |
| 15 | 50 | 50 |
| 16 | 49 | 51 |
| 17 | 47 | 53 |
| 18 | 46 | 54 |
| 19 | 45 | 55 |
| 20 | 45 | 55 |
| 21 | 44 | 56 |
| 22 | 43 | 57 |
| 23 | 41 | 59 |
| 24 | 41 | 59 |
| 25 | 39 | 61 |
| 26 | 39 | 61 |
| 27 | 38 | 62 |
| 28 | 38 | 62 |
| 29 | 36 | 64 |
| 30 | 36 | 64 |
Chance of precipitation in September
Jacareí gets around 76 mm of rain over 9.9 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 32% and peaks near 42% 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 (%) | 21 | 22 | 23 | 23 | 24 | 25 | 26 | 26 | 27 | 28 | 28 | 29 | 29 | 30 | 31 | 32 | 33 | 33 | 35 | 36 | 37 | 38 | 38 | 39 | 40 | 41 | 41 | 42 | 42 | 42 |
| Rain chance (%) | |
|---|---|
| 1 | 21 |
| 2 | 22 |
| 3 | 23 |
| 4 | 23 |
| 5 | 24 |
| 6 | 25 |
| 7 | 26 |
| 8 | 26 |
| 9 | 27 |
| 10 | 28 |
| 11 | 28 |
| 12 | 29 |
| 13 | 29 |
| 14 | 30 |
| 15 | 31 |
| 16 | 32 |
| 17 | 33 |
| 18 | 33 |
| 19 | 35 |
| 20 | 36 |
| 21 | 37 |
| 22 | 38 |
| 23 | 38 |
| 24 | 39 |
| 25 | 40 |
| 26 | 41 |
| 27 | 41 |
| 28 | 42 |
| 29 | 42 |
| 30 | 42 |
Humidity in September
Most of September feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, September lands in the comfortable band about 45% 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 (%) | 31 | 31 | 30 | 29 | 29 | 28 | 27 | 26 | 26 | 25 | 24 | 22 | 21 | 20 | 19 | 19 | 18 | 17 | 17 | 16 | 15 | 15 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 11 |
| Comfortable (%) | 51 | 50 | 51 | 51 | 50 | 50 | 49 | 49 | 49 | 48 | 48 | 48 | 48 | 47 | 47 | 46 | 46 | 45 | 44 | 43 | 43 | 42 | 41 | 40 | 39 | 37 | 36 | 35 | 34 | 33 |
| Humid (%) | 18 | 19 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 30 | 31 | 32 | 33 | 34 | 35 | 37 | 38 | 39 | 40 | 41 | 41 | 42 | 43 | 44 | 44 | 45 | 45 |
| Muggy (%) | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 4 | 5 | 5 | 6 | 7 | 7 | 8 | 9 | 10 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 31 | 51 | 18 | 0 |
| 2 | 31 | 50 | 19 | 0 |
| 3 | 30 | 51 | 19 | 0 |
| 4 | 29 | 51 | 20 | 0 |
| 5 | 29 | 50 | 21 | 0 |
| 6 | 28 | 50 | 22 | 0 |
| 7 | 27 | 49 | 23 | 1 |
| 8 | 26 | 49 | 24 | 1 |
| 9 | 26 | 49 | 25 | 1 |
| 10 | 25 | 48 | 26 | 1 |
| 11 | 24 | 48 | 27 | 1 |
| 12 | 22 | 48 | 28 | 1 |
| 13 | 21 | 48 | 30 | 1 |
| 14 | 20 | 47 | 31 | 2 |
| 15 | 19 | 47 | 32 | 2 |
| 16 | 19 | 46 | 33 | 2 |
| 17 | 18 | 46 | 34 | 2 |
| 18 | 17 | 45 | 35 | 2 |
| 19 | 17 | 44 | 37 | 2 |
| 20 | 16 | 43 | 38 | 3 |
| 21 | 15 | 43 | 39 | 3 |
| 22 | 15 | 42 | 40 | 4 |
| 23 | 14 | 41 | 41 | 5 |
| 24 | 14 | 40 | 41 | 5 |
| 25 | 13 | 39 | 42 | 6 |
| 26 | 13 | 37 | 43 | 7 |
| 27 | 12 | 36 | 44 | 7 |
| 28 | 12 | 35 | 44 | 8 |
| 29 | 12 | 34 | 45 | 9 |
| 30 | 11 | 33 | 45 | 10 |
Wind in September
Winds average 8 km/h in September, the windiest month of the year.
Across September, 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| 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 | 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 |
Sunrise & sunset in September
Daylight runs from about 11 h 30 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 42 minutes over September. Sunrise moves from 7:18 AM to 6:47 AM, and sunset from 6:49 PM to 6:59 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) | 11.5 | 11.5 | 11.6 | 11.6 | 11.6 | 11.6 | 11.7 | 11.7 | 11.7 | 11.7 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.9 | 11.9 | 11.9 | 11.9 | 12.0 | 12.0 | 12.0 | 12.0 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.2 | 12.2 |
| Sunrise (AM) | 7:18 | 7:17 | 7:16 | 7:15 | 7:14 | 7:13 | 7:12 | 7:11 | 7:10 | 7:09 | 7:07 | 7:06 | 7:05 | 7:04 | 7:03 | 7:02 | 7:01 | 7:00 | 6:59 | 6:58 | 6:57 | 6:56 | 6:55 | 6:54 | 6:53 | 6:52 | 6:51 | 6:50 | 6:48 | 6:47 |
| Sunset (PM) | 6:49 | 6:50 | 6:50 | 6:50 | 6:51 | 6:51 | 6:51 | 6:52 | 6:52 | 6:52 | 6:53 | 6:53 | 6:53 | 6:54 | 6:54 | 6:54 | 6:55 | 6:55 | 6:55 | 6:55 | 6:56 | 6:56 | 6:56 | 6:57 | 6:57 | 6:57 | 6:58 | 6:58 | 6:59 | 6:59 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.5 | 7:18 | 6:49 |
| 2 | 11.5 | 7:17 | 6:50 |
| 3 | 11.6 | 7:16 | 6:50 |
| 4 | 11.6 | 7:15 | 6:50 |
| 5 | 11.6 | 7:14 | 6:51 |
| 6 | 11.6 | 7:13 | 6:51 |
| 7 | 11.7 | 7:12 | 6:51 |
| 8 | 11.7 | 7:11 | 6:52 |
| 9 | 11.7 | 7:10 | 6:52 |
| 10 | 11.7 | 7:09 | 6:52 |
| 11 | 11.8 | 7:07 | 6:53 |
| 12 | 11.8 | 7:06 | 6:53 |
| 13 | 11.8 | 7:05 | 6:53 |
| 14 | 11.8 | 7:04 | 6:54 |
| 15 | 11.8 | 7:03 | 6:54 |
| 16 | 11.9 | 7:02 | 6:54 |
| 17 | 11.9 | 7:01 | 6:55 |
| 18 | 11.9 | 7:00 | 6:55 |
| 19 | 11.9 | 6:59 | 6:55 |
| 20 | 12.0 | 6:58 | 6:55 |
| 21 | 12.0 | 6:57 | 6:56 |
| 22 | 12.0 | 6:56 | 6:56 |
| 23 | 12.0 | 6:55 | 6:56 |
| 24 | 12.1 | 6:54 | 6:57 |
| 25 | 12.1 | 6:53 | 6:57 |
| 26 | 12.1 | 6:52 | 6:57 |
| 27 | 12.1 | 6:51 | 6:58 |
| 28 | 12.1 | 6:50 | 6:58 |
| 29 | 12.2 | 6:48 | 6:59 |
| 30 | 12.2 | 6:47 | 6:59 |
Solar energy in September
Average shortwave solar energy reaching the ground each day in September, about 4.74 kWh/m².
For context, solar energy here swings from a low near 3.39 kWh/m² to a high of 5.52 kWh/m² in December across the year — September's 4.74 kWh/m² falls in the middle.
| 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) | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.8 | 4.8 | 4.8 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.8 | Bright |
| 2 | 4.8 | Bright |
| 3 | 4.8 | Bright |
| 4 | 4.8 | Bright |
| 5 | 4.8 | Bright |
| 6 | 4.8 | Bright |
| 7 | 4.8 | Bright |
| 8 | 4.8 | Bright |
| 9 | 4.8 | Bright |
| 10 | 4.8 | Bright |
| 11 | 4.8 | Bright |
| 12 | 4.8 | Bright |
| 13 | 4.8 | Bright |
| 14 | 4.8 | Bright |
| 15 | 4.8 | Bright |
| 16 | 4.8 | Bright |
| 17 | 4.8 | Bright |
| 18 | 4.8 | Bright |
| 19 | 4.7 | Bright |
| 20 | 4.7 | Bright |
| 21 | 4.7 | Bright |
| 22 | 4.7 | Bright |
| 23 | 4.7 | Bright |
| 24 | 4.7 | Bright |
| 25 | 4.7 | Bright |
| 26 | 4.7 | Bright |
| 27 | 4.7 | Bright |
| 28 | 4.8 | Bright |
| 29 | 4.8 | Bright |
| 30 | 4.8 | Bright |
Hazard calendar for Jacareí
None of Jacareí's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Jacareí's rainy season runs October–March, when most of the year's rain falls.
Is September a good time to visit Jacareí?
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 Jacareí for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Jacareí in September
From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In September, Jacareí sees daytime highs around 25°C and nights near 15°C. Worth packing: light clothes, rain gear and sun protection. About 10 days see rain.
Sea temperature near Jacareí in September
The nearest coast averages about 21°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 64 km away) is warmest in February at about 27°C and coldest in August near 21°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 27 | 27 | 27 | 26 | 24 | 22 | 21 | 21 | 21 | 22 | 23 | 25 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 26 | Warm |
| May | 24 | Refreshing |
| Jun | 22 | Refreshing |
| Jul | 21 | Refreshing |
| Aug | 21 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 22 | Refreshing |
| Nov | 23 | Refreshing |
| Dec | 25 | Warm |
UV index in Jacareí in September
Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Jacareí peaks around February 8 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 6 (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 | 15 | 12 | 9 | 7 | 6 | 6 | 8 | 8 | 11 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | High | Very high | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 15 | Extreme |
| Mar | 12 | Extreme |
| Apr | 9 | Very high |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 6 | High |
| Aug | 8 | Very high |
| Sep | 8 | Very high |
| Oct | 11 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Air quality in Jacareí 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 Jacareí is worst in June — around 32 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 16 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) | 16 | 17 | 19 | 21 | 27 | 32 | 31 | 28 | 28 | 20 | 16 | 16 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 16 | Moderate |
| Feb | 17 | Moderate |
| Mar | 19 | Moderate |
| Apr | 21 | Moderate |
| May | 27 | Moderate |
| Jun | 32 | Moderate |
| Jul | 31 | Moderate |
| Aug | 28 | Moderate |
| Sep | 28 | Moderate |
| Oct | 20 | Moderate |
| Nov | 16 | Moderate |
| Dec | 16 | Moderate |
Where is Jacareí?
Jacareí sits at 23.3°S, 46.0°W, 574 m above sea level, in Brazil. The nearest listed city is Guararema, 14 km away.
Topography around Jacareí
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Jacareí.
Within 3 km, the terrain around Jacareí has only modest variations in elevation — a maximum elevation change of 129 m around an average of 589 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 295 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,071 m.
The land around Jacareí is covered by artificial surfaces (54%), trees (21%) and grassland (20%) within 3 km, grassland (44%) and trees (37%) within 16 km, and trees (52%) and grassland (26%) 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 Jacareí (-23.3053°, -45.9658°, elevation 574 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).