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Itajaí Weather by Month
Average temperatures, rainfall and humidity for Itajaí, Brazil, month by month, built from OpenWeather’s historical records. Use it to see what a typical Itajaí month looks like before you travel — then check the live Itajaí forecast for the days ahead.
Warmest month
January
29°C average high
Coolest month
July
14°C average low
Wettest month
May
172 mm of rain
Driest month
July
37 mm of rain
Average temperature and rainfall in Itajaí 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 | 22°C | 16°C / 39°C | 63 mm | 83% | 13 km/h |
| February | 29°C | 22°C | 14°C / 36°C | 69 mm | 83% | 12 km/h |
| March | 28°C | 21°C | 16°C / 35°C | 117 mm | 84% | 12 km/h |
| April | 26°C | 19°C | 8°C / 33°C | 60 mm | 83% | 11 km/h |
| May | 23°C | 17°C | 7°C / 32°C | 172 mm | 85% | 11 km/h |
| June | 21°C | 14°C | -5°C / 30°C | 76 mm | 86% | 10 km/h |
| July | 21°C | 14°C | 2°C / 29°C | 37 mm | 87% | 10 km/h |
| August | 21°C | 14°C | 4°C / 31°C | 58 mm | 86% | 10 km/h |
| September | 22°C | 16°C | 3°C / 33°C | 78 mm | 86% | 11 km/h |
| October | 23°C | 18°C | 11°C / 36°C | 87 mm | 85% | 12 km/h |
| November | 25°C | 19°C | 10°C / 33°C | 73 mm | 84% | 14 km/h |
| December | 27°C | 21°C | 14°C / 40°C | 70 mm | 84% | 13 km/h |
Best time to visit Itajaí
The most comfortable time to visit Itajaí is generally April and October to November, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around May, totalling about 961 mm a year.
Travellers who prefer heat should aim for January, when highs average 29°C. May is the month to avoid if rain would spoil your plans — it averages 172 mm, roughly 5× the rainfall of the driest month (July).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Itajaí forecast for what is happening now.