Boa Vista weather in August
Temperature, rain and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Poor
Best time to visit: December – February
What is the weather like in Boa Vista in August?
In August, Boa Vista is hot: daytime highs average 31 °C, and even at night it stays warm at around 22 °C. Expect around 6.0 hours of sunshine a day. It rains often – on about 21 days, adding up to 145 mm. On about 25 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is not an ideal month for a holiday in Boa Vista.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 38 | 34 | 37 |
| Day | 30° | 31° | 33° |
| Night | 22° | 22° | 23° |
| Sun | 5.1 h | 6.0 h | 7.1 h |
| Rain days | 27 | 21 | 14 |
More details for August
- Daylight
- 12 h 13 min06:01 – 18:14
- UV index
- 14 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 8 km/haverage daily peakAll months
- Cloud cover
- 64 %on averageAll months
- Hot days
- 25 days30 °C or moreAll months
- Time zone
- UTC−4offset from UTC
How the score comes together
- Temperatureweight 50 %48 %
- Sunshineweight 20 %50 %
- Few rainy daysweight 30 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in August
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Boa Vista in August: quick answers
Is Boa Vista hot in August?
Yes. In August, Boa Vista is hot: daytime highs average 31 °C and nights stay around 22 °C. On about 25 days the thermometer climbs to 30 °C or more.
Does it rain much in Boa Vista in August?
It rains often – on about 21 days, adding up to 145 mm.
Boa Vista month by month
The whole year in Boa VistaAll destinations: BrazilWhere to go in August
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences