Belém weather in December

December in Belém: sweltering, soaked, with clean air — a gamble, with 22 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Belém🇧🇷 Brazil · Amazonia · City62
  1. 54Jan
  2. 47Feb
  3. 45Mar
  4. 46Apr
  5. 53May
  6. 67Jun
  7. 72Jul
  8. 74Aug
  9. 76Sep
  10. 75Oct
  11. 69Nov
  12. 62Dec

#7 of 12 months in Belém · #928 of 1413 destinations to visit in December · comfort 62/100 (tier C)

Days
31°C
Nights
24°C
Wet days
22
Sun
9.8 h
Humidity
81%
Daylight
12 h
Belém, Brazil
Photo: miguel negrao · Pexels

Traveller notes on Belém in December

Other months in Belém

Forum posters describe January as the middle of the Amazon region's hot, wet season, with heavy rain typical, usually falling in the afternoon and bringing a bit of relief from the heat - posters are consistent that a full day of nonstop rain is genuinely unusual, with the sun more likely than not to appear at some point. Posters describe January conditions in Belém specifically as a tough climate overall, recommending the air-conditioned harbor development area, complete with ice cream, as a real relief option when the heat and humidity become too much. Posters generally describe Brazilian January more broadly as peak summer and rainy season, hot enough that the rain itself often comes as a welcome cooldown rather than a disruption. Posters generally rate January as hot, wet and genuinely demanding, but manageable with realistic expectations for a Belém visit.
Tripadvisor community · January · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe Belem as a worthwhile stop for its distinctive Amazonian cuisine, riverside markets, historic churches and lively waterfront docks, often paired with a 3-4 day side trip further into the surrounding region. As an equatorial Amazon city rather than a beach destination in the classic Brazilian sense, posters don't frame July here around 'beach weather' comparisons the way they do for Rio or the Northeast coast - instead the draw is culture, food and river life regardless of the specific month, with genuinely hot, humid conditions and a real chance of rain being a constant backdrop rather than a season-specific concern.
Tripadvisor community · July · 1 month ago · Read more on Tripadvisor ↗

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

Belém climate normals — December

Daytime high31°C / 88°F🔥 sweltering
Nighttime low24°C / 76°F
Feels like (high)37°C / 99°F
Sea temperature30°C / 86°F♨️ bath-warm
Rainfall152 mm / 6 in⛈ soaked
Rainy days22 days
Humidity81%💦 very humid
Dew point24°C / 75°F
Sunshine9.8 h/day
Daylight12.2 h
Wind14 km/h / 9 mph
Air quality (US AQI)37🍃 good

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

Crowds in Belém 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 crowdsChristmas and Réveillon, Summer holidays in Brazil, school holidays in 3 of the markets that fill it(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for Belém'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 weatherBelém's weather peaks August–October, best around September.

JFMAMJJASOND

Best weatherFair weatherToughest weather

What's on in Belém in December

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

  • Season

    Açaí harvest

    1 Aug – 15 Dec · usually

    The main açaí crop reaches the Ver-o-Peso quays from about August, when the thick purple pulp is at its best and cheapest. Out of season the price climbs sharply and the quality drops. Source ↗

  • Holiday

    Christmas and Réveillon

    24 Dec – 1 JanChristmas & New YearClosuresCrowded

    Christmas Day and New Year's Day are national holidays: many shops, restaurants and attractions close on both, a good share of residents leave town in the week between, and New Year's Eve, Réveillon, brings fireworks and crowds dressed in white. Source ↗

What's on around the world in December →

Where is Belém?

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Belém in December — FAQ

Is December a good time to visit Belém?
December in Belém: sweltering, soaked, with clean air — a gamble, with 22 rainy days. It ranks #7 of 12 months for Belém on SeasonMap's comfort score (62/100).
What is the weather like in Belém in December?
In December, Belém averages a daily high of 31°C and a low of 24.3°C, with about 151.9 mm of rain over roughly 21.5 rainy days.
What is the air quality in Belém in December?
Belém has a mean US Air Quality Index of about 37 in December.