Búzios weather in December
December in Búzios: hot, rainy, with muggy air — fine if you can take sticky heat.
Updated September 2026 · climate normals from ERA5 reanalysis
#11 of 12 months in Búzios · #364 of 1413 destinations to visit in December · comfort 83/100 (tier A)
- Days
- 29°C
- Nights
- 23°C
- Wet days
- 13
- Sun
- 10.6 h
- Humidity
- 84%
- Daylight
- 14 h
Traveller notes on Búzios in December
Other months in Búzios
Búzios' forum generally likes October - pleasant spring temperatures, mostly blue skies, and genuinely low crowds in the first half of the month before an October 12-15 holiday period brings a short price and crowd spike. One quirk worth knowing before picking a beach: the northern beaches (Tartaruga, Azeda, João Fernandes) catch warmer currents while the southern ones (Geribá, Tucuns) run noticeably colder, and an occasional cold-water upwelling from further south can chill things further. Posters treated this as normal, not a reason to avoid the month - just something to factor into which beach to pick.
Forum posters describe April daytime highs typically in the upper-70s to low-80sF (roughly 27-28C), cooling to a comfortable 70F (21C) at night - genuinely pleasant beach weather with lower humidity than the more oppressive summer months. Posters call April the tail end of high season rather than truly low season: prices have come down from peak, beaches are noticeably less crowded, but the town isn't dead either. Landing between Easter and Brazil's mid-April national holiday (the 21st), posters consistently name this as a strong sweet-spot window - cooler, drier, and quieter than peak summer, without yet losing all the energy of the high season crowd.
Add your own note from Búzios's card on the map.
Búzios climate normals — December
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Búzios 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.
Peak crowdsHigh summer, Summer holidays in Brazil, school holidays in 3 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Búzios'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 weatherBúzios's weather doesn't swing hard through the year — comfort stays fairly steady in every month.
What's on in Búzios in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Nature
Cold-water upwelling
1 Nov – 31 Mar · usuallySea warm enoughA hard north-easterly pushes the surface water offshore and cold water comes up behind it, so an ocean-facing beach can be far colder than a bay beach one headland away. It settles again a day or two after the wind drops.
- Season
High summer
20 Dec – 28 FebSchool holidaysCrowdedBook earlyA town of forty thousand runs at many times that between Christmas and Carnival. Rua das Pedras is shoulder to shoulder after dark and the single road in backs up for hours on the big weekends.
Nearby, and something's on
Within 300 km of Búzios — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Búzios?
Búzios in December — FAQ
- Is December a good time to visit Búzios?
- December in Búzios: hot, rainy, with muggy air — fine if you can take sticky heat. It ranks #11 of 12 months for Búzios on SeasonMap's comfort score (83/100).
- What is the weather like in Búzios in December?
- In December, Búzios averages a daily high of 29°C and a low of 22.6°C, with about 122.8 mm of rain over roughly 13.2 rainy days.
- What is the air quality in Búzios in December?
- Búzios has a mean US Air Quality Index of about 51 in December.
Within 300 km: Rio de Janeiro's Reveillon on Copacabana on 30 Dec – 1 Jan, and Ilha Grande's Sea warm enough to swim around 1 Dec – 30 Apr.