Average annual temperature is 16.3 °C
Absolute maximum temperature: 37.8 °C
Absolute minimum temperature: 0.4 °C
Number of sunny days: 230 days
Number of rainy days: 134 days
Number of snow days: 1 day
Look at detailed online map of Káto Viánnos
* Weather data for Káto Viánnos Greece is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 14.5 | 17.4 | 19.2 | 18.1 | 24.9 | 28.7 | 37.8 | 31.8 | 30.8 | 25.8 | 23.8 | 16.6 |
| Average daytime temperature (°C) | 12.1 | 10.3 | 14.2 | 15.6 | 19.2 | 24.8 | 31.3 | 28.9 | 26.2 | 22.0 | 18.2 | 14.1 |
| Average temperature (°C) | 9.2 | 7.3 | 10.9 | 12.3 | 16.0 | 21.0 | 26.7 | 24.7 | 22.1 | 18.3 | 15.2 | 11.3 |
| Average night temperature (°C) | 6.7 | 4.5 | 7.9 | 9.2 | 12.9 | 17.5 | 22.3 | 21.1 | 18.8 | 15.4 | 12.3 | 9.1 |
| Absolute minimum temperature (°C) | 3.7 | 0.4 | 3.1 | 6.7 | 10.5 | 14.5 | 18.7 | 19.0 | 16.6 | 13.4 | 6.3 | 6.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.2 | 13.4 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 8.7 | 8.8 | 10.0 | 10.5 | 10.9 | 12.9 | 13.1 | 12.5 | 11.2 | 9.9 | 9.0 | 7.9 |
| Precipitation (mm) | 79 | 20 | 43 | 55 | 61 | 31 | 0 | 1 | 9 | 15 | 46 | 62 |
| Sunny days | 12 | 17 | 14 | 19 | 11 | 20 | 31 | 29 | 21 | 22 | 17 | 17 |
| Rainy days | 19 | 10 | 17 | 11 | 20 | 10 | 0 | 2 | 9 | 9 | 13 | 14 |
| Snow days | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Káto Viánnos during the most sunny months:
The largest precipitation sum in Káto Viánnos is at