Boa Vista weather in August 2025

Expect daytime maximum temperatures of 31°C in Boa Vista, Brazil in August and very high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 21 days with some rainfall and typically 207 mm of rainfall in the month.

  • 31°C maximum daytime temperature in August in Boa Vista31
    31°C max day temperature
  • 7 hours of sunshine per day
  • 21 days with some rainfall in August in Boa Vista21
    21 days with some rainfall
  • 22°C minimum night-time temperature in August in Boa Vista22
    22°C min night temperature
  • 12 hours of daylight per day in August in Boa Vista12
    12 hours of daylight per day
  • High heat & humidity in August in Boa VistaH
    High heat & humidity
  • 207 mm monthly rainfall in August in Boa Vista207
    207 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in Boa Vista11
    11+ (Extreme) UV index

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The August weather guide for Brazil (Boa Vista) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Boa Vista in August?

Daytime temperatures usually reach 31°C in Boa Vista in August with high heat and humidity, falling to 22°C at night.

How sunny is it in Boa Vista in August?

There are normally 7 hours of bright sunshine each day in Boa Vista in August - that's 57% of daylight hours.

Does it rain in Boa Vista in August?

There are usually 21 days with some rain in Boa Vista in August and the average monthly rainfall is 207mm.

Boa Vista August sunrise & sunset times

Browse the sunrise and sunset times for Boa Vista in August 2025. Select a month to view Boa Vista sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 06:02 18:16
Saturday, 16th August 2025 06:01 18:13
Sunday, 31st August 2025 05:58 18:08

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