Average annual temperature is 21.8 °C
Absolute maximum temperature: 34.7 °C
Absolute minimum temperature: 9.2 °C
Number of sunny days: 59 days
Number of rainy days: 306 days
Look at detailed online map of Onilahy
* Weather data for Onilahy Madagascar is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 34.5 | 32.0 | 31.6 | 32.1 | 29.3 | 28.2 | 26.3 | 26.9 | 29.8 | 34.7 | 33.8 | 34.0 |
| Average daytime temperature (°C) | 28.3 | 28.1 | 27.6 | 27.1 | 25.2 | 24.1 | 22.9 | 23.2 | 26.8 | 29.7 | 28.0 | 30.3 |
| Average temperature (°C) | 23.5 | 23.4 | 22.9 | 22.4 | 20.6 | 19.1 | 18.3 | 19.1 | 21.0 | 23.5 | 23.0 | 24.7 |
| Average night temperature (°C) | 20.8 | 20.5 | 20.3 | 19.3 | 17.2 | 14.6 | 14.5 | 16.1 | 16.2 | 19.3 | 19.5 | 20.9 |
| Absolute minimum temperature (°C) | 19.8 | 18.2 | 18.5 | 17.4 | 14.8 | 9.2 | 11.5 | 13.3 | 14.0 | 15.6 | 17.7 | 16.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.3 | 12.8 | 12.2 | 11.6 | 11.1 | 10.8 | 10.9 | 11.4 | 12.0 | 12.6 | 13.1 | 13.4 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 |
| Sunshine mean duration (h) | 6.7 | 8.3 | 7.4 | 9.0 | 8.6 | 9.5 | 8.9 | 7.5 | 10.8 | 9.6 | 8.1 | 10.1 |
| Precipitation (mm) | 778 | 373 | 483 | 154 | 127 | 28 | 69 | 119 | 17 | 127 | 127 | 176 |
| Sunny days | 0 | 2 | 0 | 2 | 7 | 11 | 7 | 1 | 12 | 7 | 4 | 6 |
| Rainy days | 31 | 26 | 31 | 28 | 24 | 19 | 24 | 30 | 18 | 24 | 26 | 25 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Onilahy is at