Average annual temperature is 25.4 °C
Absolute maximum temperature: 38.1 °C
Absolute minimum temperature: 14.0 °C
Number of sunny days: 256 days
Number of rainy days: 109 days
Look at detailed online map of Ianantsono
* Weather data for Ianantsono 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) | 37.9 | 35.1 | 32.3 | 31.5 | 31.0 | 32.0 | 30.5 | 33.3 | 37.6 | 35.8 | 38.1 | 37.7 |
| Average daytime temperature (°C) | 32.1 | 31.4 | 29.5 | 29.3 | 28.5 | 27.9 | 27.9 | 29.0 | 31.2 | 31.3 | 32.2 | 33.9 |
| Average temperature (°C) | 28.0 | 27.8 | 26.0 | 25.1 | 23.4 | 22.2 | 21.8 | 22.7 | 25.2 | 26.0 | 27.4 | 29.0 |
| Average night temperature (°C) | 24.7 | 24.8 | 23.3 | 21.7 | 19.4 | 17.8 | 17.0 | 17.9 | 19.9 | 21.3 | 22.9 | 24.6 |
| Absolute minimum temperature (°C) | 22.8 | 22.5 | 19.0 | 18.9 | 16.5 | 14.0 | 14.2 | 15.0 | 15.8 | 17.6 | 19.3 | 21.4 |
| 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) | 13.4 | 12.9 | 12.2 | 11.5 | 11.0 | 10.7 | 10.8 | 11.3 | 12.0 | 12.6 | 13.2 | 13.6 |
| 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) | 10.3 | 10.5 | 8.7 | 10.3 | 10.0 | 9.8 | 9.8 | 10.2 | 11.2 | 11.1 | 12.1 | 11.8 |
| Precipitation (mm) | 166 | 80 | 305 | 37 | 7 | 0 | 0 | 0 | 0 | 13 | 10 | 47 |
| Sunny days | 7 | 9 | 12 | 21 | 24 | 28 | 29 | 28 | 30 | 22 | 23 | 23 |
| Rainy days | 24 | 19 | 19 | 9 | 7 | 2 | 2 | 3 | 0 | 9 | 7 | 8 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Ianantsono is at