The weather in Boa Vista in September is very hot. The average temperatures are between 78°F and 80°F, drinking water regularly is advisable.
You can expect about 3 to 8 days of rain in Boa Vista during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Boa Vista in September 2025.
If you’re planning to visit Boa Vista in the near future, we highly recommend that you review the 14 day weather forecast for Boa Vista before you arrive.
Temperatures
80° / 78°
Rainy Days
3
Snowy Days
0
Dry Days
27
Rainfall
2.76
in
Sun Hours
10.3
Hrs
