Average annual temperature is 27.2 °C
Absolute maximum temperature: 37.9 °C
Absolute minimum temperature: 20.6 °C
Number of sunny days: 63 days
Number of rainy days: 302 days
Look at detailed online map of Castanhal
* Weather data for Castanhal Brazil is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 32.1 | 32.8 | 33.5 | 33.7 | 32.6 | 33.4 | 36.1 | 36.5 | 37.5 | 37.9 | 37.3 | 35.2 |
| Average daytime temperature (°C) | 28.9 | 30.3 | 30.6 | 30.7 | 30.8 | 31.0 | 33.1 | 34.5 | 34.8 | 35.6 | 34.2 | 31.8 |
| Average temperature (°C) | 24.9 | 25.5 | 25.9 | 26.2 | 26.5 | 26.5 | 27.6 | 28.7 | 28.9 | 29.7 | 28.9 | 27.0 |
| Average night temperature (°C) | 22.6 | 22.8 | 23.2 | 23.3 | 23.7 | 23.1 | 23.7 | 24.4 | 24.6 | 25.4 | 25.0 | 24.3 |
| Absolute minimum temperature (°C) | 21.5 | 21.6 | 22.1 | 22.2 | 22.6 | 20.6 | 22.7 | 22.9 | 22.9 | 23.3 | 22.9 | 23.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Daylight mean duration (h) | 12.3 | 12.2 | 12.1 | 12.0 | 12.0 | 11.9 | 11.9 | 12.0 | 12.1 | 12.2 | 12.3 | 12.3 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 7.4 | 7.8 | 8.1 | 8.6 | 9.0 | 10.4 | 11.0 | 11.2 | 10.4 | 10.6 | 9.7 | 8.3 |
| Precipitation (mm) | 356 | 402 | 289 | 289 | 181 | 95 | 24 | 44 | 38 | 53 | 79 | 186 |
| Sunny days | 0 | 0 | 0 | 0 | 0 | 4 | 5 | 12 | 14 | 16 | 10 | 2 |
| Rainy days | 31 | 28 | 31 | 30 | 31 | 26 | 26 | 19 | 16 | 15 | 20 | 29 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Castanhal is at