Average annual temperature is 11.5 °C
Absolute maximum temperature: 26.3 °C
Absolute minimum temperature: -3.3 °C
Number of sunny days: 58 days
Number of rainy days: 307 days
Look at detailed online map of Shannon
* Weather data for Shannon 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) | 13.4 | 14.4 | 15.9 | 17.6 | 23.3 | 25.4 | 21.2 | 25.2 | 26.3 | 21.8 | 14.0 | 13.3 |
| Average daytime temperature (°C) | 8.9 | 10.6 | 10.6 | 13.1 | 17.4 | 21.6 | 17.7 | 18.8 | 18.8 | 14.9 | 10.7 | 9.7 |
| Average temperature (°C) | 6.6 | 8.1 | 7.8 | 9.7 | 13.4 | 17.5 | 15.1 | 15.8 | 15.3 | 11.9 | 8.6 | 8.0 |
| Average night temperature (°C) | 4.2 | 5.6 | 4.9 | 6.4 | 9.3 | 13.2 | 12.7 | 13.1 | 12.1 | 9.3 | 6.5 | 6.0 |
| Absolute minimum temperature (°C) | -3.3 | -0.6 | -1.6 | 1.8 | 6.7 | 9.8 | 10.2 | 11.0 | 6.3 | 2.7 | -0.1 | -1.9 |
| 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 | 14.0 | 15.8 | 16.8 | 16.3 | 14.7 | 12.7 | 10.6 | 8.7 | 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) | 3.6 | 3.7 | 4.5 | 7.1 | 9.9 | 10.7 | 8.4 | 8.5 | 6.8 | 5.1 | 4.6 | 2.4 |
| Precipitation (mm) | 129 | 36 | 211 | 80 | 64 | 148 | 211 | 104 | 184 | 191 | 124 | 177 |
| Sunny days | 4 | 9 | 2 | 2 | 13 | 8 | 1 | 1 | 5 | 5 | 5 | 3 |
| Rainy days | 27 | 19 | 29 | 28 | 18 | 22 | 30 | 30 | 25 | 26 | 25 | 28 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Shannon during the most sunny months:
Months with the longest average daylight duration in Shannon:
The largest precipitation sum in Shannon is at