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Altamira Weather by Month
Average temperatures, rainfall and humidity for Altamira, Brazil, month by month, built from OpenWeather’s historical records. Use it to see what a typical Altamira month looks like before you travel — then check the live Altamira forecast for the days ahead.
Warmest month
October
33°C average high
Coolest month
July
23°C average low
Wettest month
March
100 mm of rain
Driest month
September
14 mm of rain
Average temperature and rainfall in Altamira 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 | 24°C | 13°C / 36°C | 52 mm | 82% | 10 km/h |
| February | 30°C | 24°C | 21°C / 35°C | 65 mm | 85% | 10 km/h |
| March | 30°C | 24°C | 21°C / 36°C | 100 mm | 86% | 10 km/h |
| April | 30°C | 24°C | 22°C / 34°C | 76 mm | 87% | 9 km/h |
| May | 30°C | 24°C | 21°C / 36°C | 64 mm | 88% | 9 km/h |
| June | 31°C | 23°C | 21°C / 36°C | 31 mm | 86% | 9 km/h |
| July | 31°C | 23°C | 20°C / 36°C | 18 mm | 83% | 9 km/h |
| August | 32°C | 24°C | 21°C / 39°C | 15 mm | 80% | 11 km/h |
| September | 33°C | 25°C | 22°C / 39°C | 14 mm | 76% | 12 km/h |
| October | 33°C | 25°C | 22°C / 39°C | 19 mm | 73% | 12 km/h |
| November | 33°C | 25°C | 22°C / 39°C | 32 mm | 75% | 12 km/h |
| December | 32°C | 25°C | 22°C / 37°C | 45 mm | 78% | 11 km/h |
Best time to visit Altamira
The most comfortable time to visit Altamira 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 March, totalling about 530 mm a year.
Travellers who prefer heat should aim for October, when highs average 33°C. March is the month to avoid if rain would spoil your plans — it averages 100 mm, roughly 7× the rainfall of the driest month (September).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Altamira forecast for what is happening now.
Weather across Brazil right now
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