Average annual temperature is 10.4 °C
Absolute maximum temperature: 25.8 °C
Absolute minimum temperature: -4.1 °C
Number of sunny days: 80 days
Number of rainy days: 284 days
Number of snow days: 1 day
Look at detailed online map of County Monaghan
* Weather data for County Monaghan 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) | 12.2 | 13.3 | 14.6 | 17.6 | 21.9 | 25.8 | 21.6 | 23.0 | 25.7 | 20.7 | 12.9 | 12.4 |
| Average daytime temperature (°C) | 7.7 | 9.5 | 9.4 | 12.3 | 16.3 | 20.8 | 17.4 | 18.4 | 18.0 | 14.1 | 9.3 | 8.8 |
| Average temperature (°C) | 5.5 | 7.2 | 6.3 | 8.7 | 12.3 | 16.4 | 14.4 | 15.1 | 14.4 | 11.2 | 6.7 | 6.9 |
| Average night temperature (°C) | 3.4 | 4.6 | 3.4 | 5.0 | 8.2 | 12.1 | 11.6 | 11.9 | 11.1 | 8.6 | 4.1 | 4.9 |
| Absolute minimum temperature (°C) | -4.1 | -1.8 | -3.1 | -0.5 | 5.4 | 8.0 | 8.7 | 8.9 | 4.5 | 1.4 | -2.5 | -4.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 8.0 | 10.0 | 12.0 | 15.0 | 16.0 | 17.0 | 17.0 | 15.0 | 13.0 | 11.0 | 9.0 | 7.0 |
| Daylight mean duration (h) | 8.0 | 9.8 | 11.9 | 14.1 | 16.0 | 17.1 | 16.6 | 14.8 | 12.7 | 10.5 | 8.5 | 7.4 |
| Daylight minimum duration (h) | 7.0 | 8.0 | 10.0 | 13.0 | 15.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 7.0 | 7.0 |
| Sunshine mean duration (h) | 3.1 | 2.9 | 4.4 | 7.3 | 8.7 | 11.8 | 8.6 | 9.2 | 6.8 | 5.1 | 4.5 | 1.8 |
| Precipitation (mm) | 65 | 25 | 130 | 103 | 65 | 63 | 213 | 138 | 146 | 116 | 76 | 129 |
| Sunny days | 7 | 12 | 6 | 4 | 10 | 10 | 0 | 4 | 4 | 8 | 9 | 6 |
| Rainy days | 24 | 16 | 24 | 26 | 21 | 20 | 31 | 27 | 26 | 23 | 21 | 25 |
| Snow days | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit County Monaghan during the most sunny months:
Months with the longest average daylight duration in County Monaghan:
The largest precipitation sum in County Monaghan is at