Weather in Boa Vista in December

How December compares

December is the 7th warmest month of the year in Boa Vista and ranks 34th of 134 destinations we compare for December - see where else is hot in December. Within Cape Verde it is 1st of 2 (Cape Verde in December). Against London's average high of 7.7°C in December, Boa Vista is 18.3°C warmer by day and 18.9°C warmer at night.

Daytime and night-time in December

The typical December day in Boa Vista peaks at 26.0°C, but that is an average: the warmest 10% of days reach 27.7°C or more. About 80% of days top 25°C. Nights average 21.6°C; one night in ten drops to 20.3°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest December day here reached 29.7°C (2009-12-08) and the coldest night 17.2°C (2020-12-25).

Rain in December

Dry (3 rainy days or fewer): about 0 days with 1 mm or more, 3 mm in total. Year to year it varies a lot - the wettest December was 2013 with 42 mm, the driest 1997 with 0 mm. Humidity averages 70%.

Sea temperature in December

The sea averages 24.1°C - warm enough to swim (22°c+). Depending on the year it ranges from 23.5°C to 24.8°C. For the warmest sea here, come in September (26.6°C).

Sunshine and daylight

Around 5.5 hours of sunshine a day (estimated from cloud cover), 11.0 hours of daylight: the sun rises about 06:52 and sets about 18:02 local time in mid-December. Average cloud cover is 50%.

Is December a good time to visit Boa Vista?

Yes - it is one of the better months: hot days, little rain. The best months for Boa Vista on our scoring are June, May, March; months averaging 25°C or more: Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec.

Warm enough for summer clothes, without extreme heat

Boa Vista in December suits travellers who want to feel properly warm but do not need scorching afternoons. Around 80% of days reach 25°C, so lightweight clothes are a sensible starting point. Midday is still a time for shade and sun protection, particularly if you have just arrived from the UK. Average night lows of 21.6°C make evenings mild rather than chilly, though a light layer gives you flexibility when temperatures dip. The coldest 10% of nights fall to 20.3°C or below. December is not the island's hottest month, but that is part of its appeal if stronger heat would make being outdoors less comfortable.

Good swimming weather, but not sunshine all day

Rain is unlikely to dictate your plans: December has about 0 rainy days and just 3.0 mm of rainfall on average. That makes it a sensible month for spending time outdoors, although an entirely rain-free stay is not guaranteed. Sunshine averages about 5.5 hours within 11.0 hours of daylight, so leave room for cloudy spells in your expectations. The sea averages 24.1°C, warm enough for swimming rather than just a quick dip. Water temperatures range from 24°C to 25°C between years, which makes swimming a dependable part of December's appeal on temperature alone. Plan around the daylight available rather than assuming bright sunshine will last from morning until evening.