worldweather33°Cwarmer than usual
usually 31°C–34°C
warmer than 76% of similar days
night: exceptionally warm
rain: less rain than usual
wind: exceptionally strong
Weather in Belém - 14-day forecast
Detailed weather forecast for Belém, Brazil: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Belém
today🌤️
33°💧 0.1 mm
Sun🌧️
33°💧 1.1 mm
Mon☁️
33°💧 0.3 mm
Tue🌧️
34°💧 0.8 mm
Wed🌧️
35°💧 0.6 mm
Thu☁️
30°💧 0.2 mm
Fri🌧️
34°💧 0.3 mm
Sat☀️
35°night 27°
Forecast vs 1991-2020 climate normal
NASA POWERHow does the current forecast compare with normal?
We compare the coming days with weather usually observed at this time of year.
Thursday 10 Sept in Belém, the forecast high is 30°C. Typical daytime temperatures at this time of year range from 32°C to 34°C, so it will be exceptionally cool. It is cooler than 97% of similar days.
33°Cwarmer than usual
usually 31°C–34°C
warmer than 74% of similar days
night: exceptionally warm
rain: typical rainfall
wind: exceptionally strong
33°Cwarmer than usual
usually 31°C–34°C
warmer than 71% of similar days
night: exceptionally warm
rain: less rain than usual
wind: exceptionally strong
34°Cwarmer than usual
usually 31°C–34°C
warmer than 77% of similar days
night: exceptionally warm
rain: typical rainfall
wind: exceptionally strong
35°Cexceptionally warm
usually 32°C–34°C
warmer than 90% of similar days
night: exceptionally warm
rain: typical rainfall
wind: exceptionally strong
30°Cexceptionally cool
usually 32°C–34°C
cooler than 97% of similar days
night: exceptionally warm
rain: less rain than usual
wind: exceptionally strong
34°Cwarmer than usual
usually 32°C–34°C
warmer than 79% of similar days
night: exceptionally warm
rain: less rain than usual
wind: exceptionally strong
How warm was this week in previous years?
Each bar shows the average daily high during the same 7-day period in each year.
cooler yearstypical rangewarmer years2026 forecastcurrent forecast
From 1981 to 2025, the 5-11 Sept period averaged 32°C by day. The coolest year was 1990 (29°C) and the warmest was 2024 (36°C). The current forecast averages 33°C - higher than in 73% of historical years.
Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.
14-day forecast - Belém
Belém 30 & 45-day weather - long-range outlook
Next 15 days · forecast
34°
around 27° at night · days with rain: 1
Weeks 3-4 · avg for September
32°
around 24° at night · rain chance 52%
Weeks 5-7 · avg for October
32°
around 24° at night · rain chance 46%
The 30 & 45-day outlook for Belém: the next 15 days are a numerical forecast updated daily - on average 34° by day and 27° at night. Further out we rely on multi-year climate averages: around 32° in September, and about 32° in October. Forecasts beyond two weeks are indicative only.
Day-by-day forecast for Belém
Saturday5 September 2026
🌤️33°scattered clouds
Sunday6 September 2026
🌧️33°light rain
Monday7 September 2026
☁️33°broken clouds
Tuesday8 September 2026
🌧️34°light rain
Wednesday9 September 2026
🌧️35°light rain
Thursday10 September 2026
☁️30°overcast clouds
Friday11 September 2026
🌧️34°light rain
Saturday12 September 2026
☀️35°clear sky
Sunday13 September 2026
☀️34°clear sky
Monday14 September 2026
🌤️34°scattered clouds
Tuesday15 September 2026
☁️35°overcast clouds
Wednesday16 September 2026
🌤️35°scattered clouds
Thursday17 September 2026
🌤️35°scattered clouds
Friday18 September 2026
☀️35°clear sky
Saturday19 September 2026
☀️35°clear sky
UV index in Belém - is it safe to sunbathe?
Today the UV index in Belém is 9 (very high) - unprotected fair skin can burn in about 20 minutes. SPF 50, long sleeves and shade between 10:00 and 16:00.
Sea temperature - Belém
Water today
30°C
Week avg
30°C
Waves today
0.1 m
How's the water?
very warm
16-day sea temperature forecast:
Average sea temperature through the year:
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.
Air quality and smog in Belém
Air quality in Belém is currently very good. Fine particulate PM2.5: 11.4 µg/m³, PM10: 16 µg/m³.
| City | PM2.5 (µg/m³) | PM10 (µg/m³) | Air quality |
|---|---|---|---|
| Belém | 11.4 | 16 | very good |
Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-09-04, 22:00).
Belém weather through the year
Upcoming public holidays in Brazil: Independence Day — 7 September · Our Lady of Aparecida — 12 October · All Souls' Day — 2 November.
Nearby and related places
FAQ - Belém weather
What is the weather like in Belém today?
Today it is about 33° during the day and 26° at night, scattered clouds.
How far ahead can I check the forecast for Belém?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.