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Santarém Weather by Month
Average temperatures, rainfall and humidity for Santarém, Brazil, month by month, built from OpenWeather’s historical records. Use it to see what a typical Santarém month looks like before you travel — then check the live Santarém 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 Santarém 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 Santarém
The most comfortable time to visit Santarém 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 Santarém forecast for what is happening now.