Monthly climate guide
Belém weather in September
With highs near 34°C (93°F) and lows around 25°C (77°F), September feels very hot in Belém. Rainfall averages about 70 mm (some rain) and the sky is a mix of sun and cloud. Daytime highs are 2°C warmer than August and about the same as October.
What stands out in September
- It's one of the drier months, with about 67% less rain than Belém's average.
- September is Belém's second warmest month.
- September sits in Belém's drier season — usually a comfortable time to visit.
- Belém is usually about 2°C warmer than Macapá, 330 km away, in September.
It's usually the driest month of the year.
Avg high
34°C
93°F
Avg low
25°C
77°F
Rainfall
70 mm
some rain
Humidity
71%
relative
Sky
42%
cloud · a mix of sun and cloud
Belém weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 29°C / 84°F | 24°C / 76°F | 321 mm | 88% | 81% |
| February | 28°C / 83°F | 24°C / 76°F | 380 mm | 92% | 87% |
| March | 28°C / 83°F | 25°C / 76°F | 425 mm | 92% | 87% |
| April | 28°C / 83°F | 25°C / 76°F | 392 mm | 92% | 82% |
| May | 29°C / 83°F | 25°C / 76°F | 265 mm | 92% | 72% |
| June | 29°C / 84°F | 24°C / 76°F | 163 mm | 89% | 57% |
| July | 29°C / 85°F | 24°C / 75°F | 112 mm | 88% | 51% |
| August | 32°C / 89°F | 24°C / 76°F | 77 mm | 80% | 41% |
| September | 34°C / 93°F | 25°C / 77°F | 70 mm | 71% | 42% |
| October | 34°C / 93°F | 25°C / 77°F | 73 mm | 69% | 50% |
| November | 33°C / 92°F | 25°C / 78°F | 107 mm | 71% | 55% |
| December | 32°C / 89°F | 25°C / 77°F | 191 mm | 78% | 70% |
What to pack for September
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is September a good time to visit Belém?
Compare the months in the chart above to find your ideal window.
Best time to visit Belém →Other Brazil cities in September
Cite or embed this data
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Belém weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/brazil/belem/september
<a href="https://weathercompare.eu/weather/brazil/belem/september">Belém weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/brazil/belem" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Belém weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/brazil/belem/september">Belém weather in September</a> – WeatherCompare</p>
Belém in September: quick answers
Is September a good time to visit Belém?
Yes. September is one of the best months for Belém, with highs around 34°C and about 70 mm of rain.
How warm is Belém in September?
Average highs are about 34°C (93°F) and average lows about 25°C (77°F), based on 10 years of daily data.
Does it rain a lot in Belém in September?
Belém typically gets around 70 mm of rain in September — some rain. It's usually the driest month of the year.
Figures are long-term averages for the area around Belém (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.