Boa Vista weather in December
December in Boa Vista: warm, dry — an excellent time to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#7 of 12 months in Boa Vista · #31 of 1413 destinations to visit in December · comfort 92/100 (tier S)
- Days
- 27°C
- Nights
- 21°C
- Wet days
- 1
- Sun
- 9.8 h
- Humidity
- 69%
- Daylight
- 11 h
Traveller notes on Boa Vista in December
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.
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.
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Boa Vista climate normals — December
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Boa Vista in December
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 5 of the markets that fill it, an ordinary month(estimated)
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.
What's on in Boa Vista in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Trade-wind season
1 Nov – 31 May · usuallyThe north-easterly blows hardest through the winter half of the year. It is why the kite and windsurf schools work the west-side bays then, and why a sunbed on an exposed beach can be a losing proposition. Source ↗
- Season
Bruma seca
1 Dec – 15 Mar · usuallyDust seasonThe Saharan haze Cape Verdeans call bruma seca hits the eastern islands hardest, and Boa Vista sits closest to the African coast. The horizon goes for days at a time and flights have been diverted over it. Source ↗
Where is Boa Vista?
Boa Vista in December — FAQ
- Is December a good time to visit Boa Vista?
- December in Boa Vista: warm, dry — an excellent time to visit. It ranks #7 of 12 months for Boa Vista on SeasonMap's comfort score (92/100).
- What is the weather like in Boa Vista in December?
- In December, Boa Vista averages a daily high of 27°C and a low of 21°C, with about 2.3 mm of rain over roughly 0.7 rainy days.
- What is the air quality in Boa Vista in December?
- Boa Vista has a mean US Air Quality Index of about 88 in December.