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Jacareí Weather by Month
Average temperatures, rainfall and humidity for Jacareí, Brazil, month by month, built from OpenWeather’s historical records. Use it to see what a typical Jacareí month looks like before you travel — then check the live Jacareí forecast for the days ahead.
Warmest month
February
29°C average high
Coolest month
July
12°C average low
Wettest month
March
87 mm of rain
Driest month
July
13 mm of rain
Average temperature and rainfall in Jacareí by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 29°C | 19°C | 14°C / 36°C | 78 mm | 78% | 8 km/h |
| February | 29°C | 19°C | 14°C / 35°C | 65 mm | 78% | 8 km/h |
| March | 29°C | 19°C | 12°C / 35°C | 87 mm | 78% | 8 km/h |
| April | 27°C | 17°C | 7°C / 33°C | 34 mm | 77% | 8 km/h |
| May | 25°C | 15°C | 5°C / 33°C | 27 mm | 77% | 7 km/h |
| June | 24°C | 13°C | -3°C / 31°C | 21 mm | 78% | 7 km/h |
| July | 24°C | 12°C | 1°C / 32°C | 13 mm | 73% | 7 km/h |
| August | 25°C | 13°C | 4°C / 35°C | 20 mm | 70% | 8 km/h |
| September | 28°C | 16°C | 6°C / 39°C | 25 mm | 69% | 9 km/h |
| October | 27°C | 17°C | 8°C / 39°C | 64 mm | 74% | 10 km/h |
| November | 28°C | 17°C | 9°C / 38°C | 47 mm | 75% | 10 km/h |
| December | 29°C | 19°C | 12°C / 36°C | 59 mm | 75% | 9 km/h |
Best time to visit Jacareí
The most comfortable time to visit Jacareí is generally May to July, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around March, totalling about 541 mm a year.
Travellers who prefer heat should aim for February, when highs average 29°C. March is the month to avoid if rain would spoil your plans — it averages 87 mm, roughly 6× the rainfall of the driest month (July).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Jacareí forecast for what is happening now.