Compare Irish counties
Pick two or three counties to see their rainfall, sunshine and temperatures side by side, month by month.
Monaghan gets 6% more rain a year than Armagh (1064 mm against 1008 mm), with 8 more rain days and 58 fewer hours of sunshine. July afternoons average 19°C in Monaghan and 19°C in Armagh; January nights 2°C and 2°C.
Rainfall by month
0 50 100 Monaghan, Jan: 65 mm Monaghan, Feb: 82 mm Monaghan, Mar: 82 mm Monaghan, Apr: 79 mm Monaghan, May: 78 mm Monaghan, Jun: 79 mm Monaghan, Jul: 101 mm Monaghan, Aug: 93 mm Monaghan, Sep: 106 mm Monaghan, Oct: 121 mm Monaghan, Nov: 84 mm Monaghan, Dec: 94 mm Armagh, Jan: 60 mm Armagh, Feb: 75 mm Armagh, Mar: 76 mm Armagh, Apr: 75 mm Armagh, May: 78 mm Armagh, Jun: 73 mm Armagh, Jul: 99 mm Armagh, Aug: 90 mm Armagh, Sep: 103 mm Armagh, Oct: 108 mm Armagh, Nov: 83 mm Armagh, Dec: 88 mm Cavan, Jan: 73 mm Cavan, Feb: 93 mm Cavan, Mar: 87 mm Cavan, Apr: 84 mm Cavan, May: 81 mm Cavan, Jun: 77 mm Cavan, Jul: 100 mm Cavan, Aug: 94 mm Cavan, Sep: 108 mm Cavan, Oct: 133 mm Cavan, Nov: 81 mm Cavan, Dec: 95 mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daytime high by month
0 5 10 15 Monaghan, Jan: 7 °C Monaghan, Feb: 9 °C Monaghan, Mar: 10 °C Monaghan, Apr: 12 °C Monaghan, May: 16 °C Monaghan, Jun: 18 °C Monaghan, Jul: 19 °C Monaghan, Aug: 19 °C Monaghan, Sep: 17 °C Monaghan, Oct: 14 °C Monaghan, Nov: 10 °C Monaghan, Dec: 8 °C Armagh, Jan: 7 °C Armagh, Feb: 9 °C Armagh, Mar: 11 °C Armagh, Apr: 12 °C Armagh, May: 16 °C Armagh, Jun: 18 °C Armagh, Jul: 19 °C Armagh, Aug: 19 °C Armagh, Sep: 17 °C Armagh, Oct: 14 °C Armagh, Nov: 10 °C Armagh, Dec: 8 °C Cavan, Jan: 7 °C Cavan, Feb: 9 °C Cavan, Mar: 10 °C Cavan, Apr: 12 °C Cavan, May: 16 °C Cavan, Jun: 18 °C Cavan, Jul: 19 °C Cavan, Aug: 19 °C Cavan, Sep: 17 °C Cavan, Oct: 14 °C Cavan, Nov: 10 °C Cavan, Dec: 8 °C Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sunshine by month
0.0 5.0 10.0 Monaghan, Jan: 3.8 hours a day Monaghan, Feb: 4.0 hours a day Monaghan, Mar: 5.8 hours a day Monaghan, Apr: 8.4 hours a day Monaghan, May: 9.9 hours a day Monaghan, Jun: 9.9 hours a day Monaghan, Jul: 8.6 hours a day Monaghan, Aug: 9.0 hours a day Monaghan, Sep: 7.0 hours a day Monaghan, Oct: 4.8 hours a day Monaghan, Nov: 4.0 hours a day Monaghan, Dec: 2.7 hours a day Armagh, Jan: 3.9 hours a day Armagh, Feb: 4.1 hours a day Armagh, Mar: 6.0 hours a day Armagh, Apr: 8.5 hours a day Armagh, May: 10.0 hours a day Armagh, Jun: 10.2 hours a day Armagh, Jul: 8.9 hours a day Armagh, Aug: 9.2 hours a day Armagh, Sep: 7.2 hours a day Armagh, Oct: 4.9 hours a day Armagh, Nov: 4.1 hours a day Armagh, Dec: 2.8 hours a day Cavan, Jan: 3.9 hours a day Cavan, Feb: 4.1 hours a day Cavan, Mar: 5.7 hours a day Cavan, Apr: 8.4 hours a day Cavan, May: 10.0 hours a day Cavan, Jun: 9.8 hours a day Cavan, Jul: 8.6 hours a day Cavan, Aug: 9.1 hours a day Cavan, Sep: 7.0 hours a day Cavan, Oct: 4.8 hours a day Cavan, Nov: 4.2 hours a day Cavan, Dec: 2.9 hours a day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Rain days by month
0 5 10 15 Monaghan, Jan: 12 days Monaghan, Feb: 15 days Monaghan, Mar: 16 days Monaghan, Apr: 15 days Monaghan, May: 16 days Monaghan, Jun: 15 days Monaghan, Jul: 18 days Monaghan, Aug: 16 days Monaghan, Sep: 16 days Monaghan, Oct: 18 days Monaghan, Nov: 14 days Monaghan, Dec: 15 days Armagh, Jan: 11 days Armagh, Feb: 14 days Armagh, Mar: 14 days Armagh, Apr: 15 days Armagh, May: 16 days Armagh, Jun: 13 days Armagh, Jul: 17 days Armagh, Aug: 16 days Armagh, Sep: 15 days Armagh, Oct: 17 days Armagh, Nov: 14 days Armagh, Dec: 14 days Cavan, Jan: 13 days Cavan, Feb: 16 days Cavan, Mar: 16 days Cavan, Apr: 16 days Cavan, May: 15 days Cavan, Jun: 15 days Cavan, Jul: 18 days Cavan, Aug: 18 days Cavan, Sep: 15 days Cavan, Oct: 18 days Cavan, Nov: 14 days Cavan, Dec: 15 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Figures are averages for 2021–2025 at each county town, from the ERA5 weather reanalysis via Open-Meteo. They describe typical lowland weather in each county; hills and exposed coasts are wetter and windier.