Average annual temperature is 26.0 °C
Absolute maximum temperature: 38.3 °C
Absolute minimum temperature: 19.9 °C
Number of sunny days: 27 days
Number of rainy days: 338 days
Look at detailed online map of Bastien
* Weather data for Bastien French Guiana is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 29.9 | 29.7 | 32.1 | 32.3 | 32.2 | 31.9 | 32.0 | 34.2 | 37.2 | 38.3 | 36.7 | 34.5 |
| Average daytime temperature (°C) | 27.7 | 27.5 | 29.9 | 29.5 | 29.6 | 30.7 | 30.4 | 32.4 | 34.5 | 35.7 | 33.7 | 31.6 |
| Average temperature (°C) | 23.9 | 24.2 | 25.5 | 25.4 | 25.4 | 25.5 | 25.6 | 26.9 | 27.9 | 28.6 | 27.5 | 26.2 |
| Average night temperature (°C) | 21.9 | 22.3 | 22.7 | 23.0 | 23.3 | 23.0 | 22.8 | 23.3 | 23.7 | 24.2 | 23.7 | 23.1 |
| Absolute minimum temperature (°C) | 19.9 | 21.5 | 20.7 | 22.1 | 22.5 | 22.1 | 21.5 | 21.7 | 22.4 | 22.6 | 22.6 | 21.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.9 | 12.0 | 12.1 | 12.2 | 12.4 | 12.4 | 12.4 | 12.3 | 12.1 | 12.0 | 11.9 | 11.8 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 7.0 | 5.4 | 9.8 | 7.5 | 6.5 | 7.7 | 9.5 | 10.8 | 10.5 | 10.6 | 10.5 | 9.4 |
| Precipitation (mm) | 437 | 453 | 101 | 408 | 622 | 362 | 281 | 126 | 57 | 71 | 111 | 221 |
| Sunny days | 1 | 0 | 3 | 3 | 0 | 0 | 0 | 6 | 7 | 5 | 2 | 0 |
| Rainy days | 30 | 28 | 28 | 27 | 31 | 30 | 31 | 25 | 23 | 26 | 28 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Bastien is at