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Boa Vista Weather by Month
Average temperatures, rainfall and humidity for Boa Vista, Brazil, month by month, built from OpenWeather's historical records. Use it to see what a typical Boa Vista month looks like before you travel — then check the live Boa Vista forecast for the days ahead.
Warmest month
October
34°C average high
Coolest month
July
23°C average low
Wettest month
May
109 mm of rain
Driest month
January
16 mm of rain
Average temperature and rainfall in Boa Vista 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 | 33°C | 24°C | 21°C / 38°C | 16 mm | 62% | 16 km/h |
| February | 33°C | 25°C | 21°C / 38°C | 20 mm | 60% | 18 km/h |
| March | 34°C | 25°C | 15°C / 39°C | 43 mm | 59% | 17 km/h |
| April | 33°C | 25°C | 22°C / 38°C | 69 mm | 67% | 14 km/h |
| May | 31°C | 24°C | 21°C / 37°C | 109 mm | 79% | 10 km/h |
| June | 31°C | 23°C | 20°C / 35°C | 88 mm | 81% | 8 km/h |
| July | 31°C | 23°C | 20°C / 39°C | 73 mm | 80% | 8 km/h |
| August | 32°C | 24°C | 20°C / 37°C | 60 mm | 75% | 8 km/h |
| September | 34°C | 24°C | 18°C / 37°C | 36 mm | 68% | 9 km/h |
| October | 34°C | 25°C | 18°C / 39°C | 42 mm | 66% | 10 km/h |
| November | 34°C | 25°C | 21°C / 37°C | 58 mm | 66% | 12 km/h |
| December | 33°C | 24°C | 20°C / 37°C | 23 mm | 66% | 14 km/h |
Best time to visit Boa Vista
The most comfortable time to visit Boa Vista is generally July and December to January, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around May, totalling about 637 mm a year.
Travellers who prefer heat should aim for October, when highs average 34°C. May is the month to avoid if rain would spoil your plans — it averages 109 mm, roughly 7× the rainfall of January.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Boa Vista forecast for what is happening now.