Belém weather in October

October in Belém: sweltering, dry, with clean air — fine if you can take 36°C afternoons.

Updated September 2026 · climate normals from ERA5 reanalysis

Belém🇧🇷 Brazil · Amazonia · City75
  1. 54Jan
  2. 47Feb
  3. 45Mar
  4. 46Apr
  5. 53May
  6. 67Jun
  7. 72Jul
  8. 74Aug
  9. 76Sep
  10. 75Oct
  11. 69Nov
  12. 62Dec

#2 of 12 months in Belém · #697 of 1413 destinations to visit in October · comfort 75/100 (tier B)

Days
32°C
Nights
24°C
Wet days
8
Sun
11.3 h
Humidity
74%
Daylight
12 h
Belém, Brazil
Photo: miguel negrao · Pexels

Traveller notes on Belém in October

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 ↗

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Belém climate normals — October

Daytime high32°C / 89°F🔥 sweltering
Nighttime low24°C / 76°F
Feels like (high)36°C / 97°F
Sea temperature30°C / 86°F♨️ bath-warm
Rainfall27 mm / 1.1 in☀️ dry
Rainy days8 days
Humidity74%💧 humid
Dew point24°C / 74°F
Sunshine11.3 h/day
Daylight12.1 h
Wind16 km/h / 10 mph
Air quality (US AQI)36🍃 good

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

Crowds in Belém in October

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.

BusyCírio de Nazaré(estimated)

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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).

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

October includes Círio de Nazaré.

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Best weatherFair weatherToughest weather

What's on in Belém in October

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

  • Season

    Amazonian summer

    15 Jun – 30 Nov · usuallyDry season

    Locals call the drier half of the year the Amazon summer. The afternoon downpour stops being a daily certainty, the river beaches on Mosqueiro and Marajó open, and the weekend boats out of the city fill.

  • 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 ↗

  • Festival

    Círio de Nazaré

    10–26 OctReligious feastCrowdedBook earlyClosures

    On the second Sunday of October a couple of million people walk behind the rope with the image, and the fortnight around it is the city's real Christmas: family lunches, closed streets, no beds left. Source ↗

What's on around the world in October →

Where is Belém?

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Belém in October — FAQ

Is October a good time to visit Belém?
October in Belém: sweltering, dry, with clean air — fine if you can take 36°C afternoons. It ranks #2 of 12 months for Belém on SeasonMap's comfort score (75/100).
What is the weather like in Belém in October?
In October, Belém averages a daily high of 31.5°C and a low of 24.2°C, with about 27.2 mm of rain over roughly 8 rainy days.
What is the air quality in Belém in October?
Belém has a mean US Air Quality Index of about 36 in October.