Boa Vista weather in August

August in Boa Vista: sweltering, dry, with muggy air — fine if you can take sticky heat.

Updated September 2026 · climate normals from ERA5 reanalysis

Boa Vista🇨🇻 Cabo Verde · Sahel & Cabo Verde · Island91
  1. 91Jan
  2. 90Feb
  3. 92Mar
  4. 93Apr
  5. 93May
  6. 94Jun
  7. 94Jul
  8. 91Aug
  9. 89Sep
  10. 91Oct
  11. 93Nov
  12. 92Dec

#9 of 12 months in Boa Vista · #165 of 1413 destinations to visit in August · comfort 91/100 (tier S)

Days
30°C
Nights
25°C
Wet days
4
Sun
11 h
Humidity
76%
Daylight
13 h
Boa Vista, Cabo Verde
Photo: The original uploader was Bela-vista · CC BY-SA 3.0

Traveller notes on Boa Vista in August

Other months in Boa Vista

Boa Vista's forum describes January as reliably warm and sunny for sunbathing, typically around 25C with the odd cloudy day, though multiple posters flagged the wind as genuinely chilly at times even under clear skies - it's the kind of place where a cardigan for the evening is worth packing despite the warm days. The pool and sea were described as too cold for comfortable swimming by some visitors, matching the island's relatively cool January water. An occasional Saharan dust event can roll through for a few days and, in rare cases, disrupt flights.
CapeVerdeWinterSunSeeker · January · 1 month ago · Read more on Tripadvisor ↗
Forum posters call July technically the start of the rainy season but say you'd be unlucky to see more than a quick, short shower - high-20sC temperatures with plenty of sun are the norm. One repeat visitor who's been to Boa Vista in July and August many times reports never experiencing bad weather, describing it as very hot by day with a lovely, welcoming breeze that keeps things comfortable despite the heat - though that same breeze can mask sun exposure, so posters stress applying sunscreen generously regardless of how pleasant it feels. Wind itself is actually strongest in winter, not July, making midsummer comparatively calmer on that front.
Tripadvisor community · July · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Boa Vista's card on the map.

Boa Vista climate normals — August

Daytime high30°C / 86°F🔥 sweltering
Nighttime low25°C / 77°F
Feels like (high)34°C / 93°F
Sea temperature28°C / 82°F😎 warm sea
Rainfall30 mm / 1.2 in☀️ dry
Rainy days4 days
Humidity76%💦 very humid
Dew point22°C / 72°F
Sunshine11 h/day
Daylight12.7 h
Wind20 km/h / 12 mph
Air quality (US AQI)62🙂 moderate

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Boa Vista in August

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Shoulder seasonschool holidays in 4 of the markets that fill it, an ordinary month(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Boa Vista's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherBoa Vista's weather doesn't swing hard through the year — comfort stays fairly steady in every month.

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What's on in Boa Vista in August

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Nature

    Loggerhead nesting

    15 Jun – 15 Oct · usuallyTurtle nesting

    Boa Vista's long east-coast beaches take one of the largest loggerhead nesting populations in the world, and the females come ashore after dark through the summer. Visits go out with licensed guides; torches on the sand are what ruins it. Source ↗

What's on around the world in August →

Where is Boa Vista?

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Boa Vista in August — FAQ

Is August a good time to visit Boa Vista?
August in Boa Vista: sweltering, dry, with muggy air — fine if you can take sticky heat. It ranks #9 of 12 months for Boa Vista on SeasonMap's comfort score (91/100).
What is the weather like in Boa Vista in August?
In August, Boa Vista averages a daily high of 29.9°C and a low of 25°C, with about 29.9 mm of rain over roughly 4.1 rainy days.
What is the air quality in Boa Vista in August?
Boa Vista has a mean US Air Quality Index of about 62 in August.