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Itaboraí Weather by Month
Average temperatures, rainfall and humidity for Itaboraí, Brazil, month by month, built from OpenWeather’s historical records. Use it to see what a typical Itaboraí month looks like before you travel — then check the live Itaboraí forecast for the days ahead.
Warmest month
February
31°C average high
Coolest month
August
17°C average low
Wettest month
January
61 mm of rain
Driest month
July
18 mm of rain
Average temperature and rainfall in Itaboraí 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 | 31°C | 23°C | 15°C / 38°C | 61 mm | 79% | 9 km/h |
| February | 31°C | 23°C | 16°C / 40°C | 58 mm | 78% | 9 km/h |
| March | 30°C | 23°C | 15°C / 38°C | 56 mm | 79% | 9 km/h |
| April | 28°C | 21°C | 12°C / 36°C | 30 mm | 79% | 8 km/h |
| May | 27°C | 19°C | 9°C / 37°C | 26 mm | 79% | 8 km/h |
| June | 26°C | 18°C | 11°C / 35°C | 22 mm | 80% | 8 km/h |
| July | 26°C | 18°C | 7°C / 36°C | 18 mm | 76% | 8 km/h |
| August | 26°C | 17°C | 8°C / 37°C | 26 mm | 75% | 8 km/h |
| September | 28°C | 19°C | 12°C / 39°C | 32 mm | 75% | 9 km/h |
| October | 28°C | 20°C | 13°C / 37°C | 46 mm | 79% | 10 km/h |
| November | 28°C | 21°C | 12°C / 41°C | 60 mm | 80% | 10 km/h |
| December | 30°C | 22°C | 17°C / 38°C | 52 mm | 80% | 10 km/h |
Best time to visit Itaboraí
The most comfortable time to visit Itaboraí is generally June to August, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around January, totalling about 488 mm a year.
Travellers who prefer heat should aim for February, when highs average 31°C. January is the month to avoid if rain would spoil your plans — it averages 61 mm, roughly 3× the rainfall of the driest month (July).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Itaboraí forecast for what is happening now.