Average annual temperature is 11.4 °C
Absolute maximum temperature: 26.2 °C
Absolute minimum temperature: -2.4 °C
Number of sunny days: 57 days
Number of rainy days: 308 days
Look at detailed online map of Sliss
* Weather data for Sliss Ireland is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 12.6 | 14.2 | 14.6 | 17.4 | 23.7 | 24.6 | 20.8 | 24.7 | 26.2 | 21.2 | 13.7 | 12.9 |
| Average daytime temperature (°C) | 8.8 | 10.3 | 10.0 | 12.5 | 15.8 | 20.5 | 16.7 | 17.8 | 18.3 | 14.6 | 10.7 | 9.9 |
| Average temperature (°C) | 6.9 | 8.2 | 7.6 | 9.5 | 12.6 | 16.8 | 14.7 | 15.5 | 15.1 | 11.9 | 9.1 | 8.4 |
| Average night temperature (°C) | 4.9 | 6.1 | 5.1 | 6.5 | 9.4 | 13.0 | 12.9 | 13.5 | 12.5 | 9.7 | 7.3 | 6.6 |
| Absolute minimum temperature (°C) | -2.4 | 0.3 | 0.1 | 2.5 | 6.2 | 10.1 | 10.3 | 9.6 | 8.3 | 4.6 | -0.1 | -1.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 8.0 | 10.0 | 12.0 | 14.0 | 16.0 | 16.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 |
| Daylight mean duration (h) | 8.3 | 9.9 | 11.9 | 13.9 | 15.8 | 16.7 | 16.3 | 14.7 | 12.7 | 10.6 | 8.8 | 7.7 |
| Daylight minimum duration (h) | 7.0 | 9.0 | 10.0 | 12.0 | 14.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 | 7.0 |
| Sunshine mean duration (h) | 3.2 | 3.8 | 4.9 | 7.3 | 10.0 | 10.9 | 8.5 | 8.3 | 6.8 | 4.9 | 4.6 | 2.4 |
| Precipitation (mm) | 168 | 43 | 202 | 104 | 74 | 168 | 246 | 134 | 152 | 165 | 188 | 226 |
| Sunny days | 3 | 10 | 4 | 4 | 11 | 8 | 0 | 0 | 5 | 5 | 4 | 3 |
| Rainy days | 28 | 18 | 27 | 26 | 20 | 22 | 31 | 31 | 25 | 26 | 26 | 28 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Sliss during the most sunny months:
Months with the longest average daylight duration in Sliss:
The largest precipitation sum in Sliss is at