Average annual temperature is 27.2 °C
Absolute maximum temperature: 29.8 °C
Absolute minimum temperature: 23.8 °C
Number of sunny days: 40 days
Number of rainy days: 325 days
Look at detailed online map of Olosega County
* Weather data for Olosega County American Samoa is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 29.1 | 29.2 | 29.3 | 29.8 | 29.1 | 29.1 | 29.1 | 28.6 | 28.1 | 28.4 | 29.1 | 28.8 |
| Average daytime temperature (°C) | 28.0 | 28.2 | 28.5 | 28.6 | 28.3 | 28.3 | 27.9 | 28.0 | 27.4 | 27.5 | 28.3 | 28.1 |
| Average temperature (°C) | 26.9 | 27.2 | 27.5 | 27.3 | 27.5 | 27.5 | 27.2 | 27.4 | 26.7 | 26.8 | 27.5 | 27.2 |
| Average night temperature (°C) | 25.7 | 25.8 | 26.2 | 25.7 | 26.4 | 26.5 | 26.3 | 26.7 | 26.0 | 26.0 | 26.6 | 26.2 |
| Absolute minimum temperature (°C) | 24.4 | 24.3 | 24.4 | 23.8 | 24.2 | 24.4 | 24.8 | 25.3 | 24.1 | 24.6 | 25.0 | 25.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum 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 |
| Daylight mean duration (h) | 12.9 | 12.6 | 12.2 | 11.8 | 11.5 | 11.3 | 11.4 | 11.7 | 12.0 | 12.4 | 12.8 | 12.9 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 9.8 | 9.5 | 9.8 | 9.3 | 9.1 | 9.9 | 9.8 | 10.4 | 10.8 | 10.6 | 11.7 | 8.8 |
| Precipitation (mm) | 335 | 293 | 317 | 366 | 237 | 100 | 77 | 32 | 129 | 246 | 115 | 535 |
| Sunny days | 2 | 1 | 3 | 0 | 3 | 2 | 4 | 11 | 3 | 5 | 5 | 1 |
| Rainy days | 29 | 27 | 28 | 30 | 28 | 28 | 27 | 20 | 27 | 26 | 25 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Olosega County is at