Belém weather in December
December in Belém: sweltering, rainy, with clean air — a good time to visit.
#7 of 12 months in Belém · #369 of 604 destinations to visit in December · comfort 65/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Belém climate normals — December
| Daytime high | 31°C / 87°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 25°C / 78°F | |
| Feels like (high) | 36°C / 97°F | |
| Rainfall | 133 mm / 5.2 in | 🌧 rainy |
| Rainy days | 21 days | |
| Humidity | 80% | 💦 very humid |
| Dew point | 23°C / 74°F | |
| Sunshine | 10.1 h/day | |
| Daylight | 12.2 h | |
| Wind | 14 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.
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Belém in December — FAQ
- Is December a good time to visit Belém?
- December in Belém: sweltering, rainy, with clean air — a good time to visit. It ranks #7 of 12 months for Belém on SeasonMap's comfort score (65/100).
- What is the weather like in Belém in December?
- In December, Belém averages a daily high of 30.6°C and a low of 25.3°C, with about 132.6 mm of rain over roughly 20.6 rainy days.
- What is the air quality in Belém in December?
- Belém has a mean US Air Quality Index of about 37 in December.