Compare Irish counties
Pick two or three counties to see their rainfall, sunshine and temperatures side by side, month by month.
Antrim gets 4% more rain a year than Armagh (1047 mm against 1008 mm), with 2 fewer rain days and 204 more hours of sunshine. July afternoons average 19°C in Antrim and 19°C in Armagh; January nights 2°C and 2°C.
Rainfall by month
0 50 100 Antrim, Jan: 62 mm Antrim, Feb: 78 mm Antrim, Mar: 75 mm Antrim, Apr: 72 mm Antrim, May: 80 mm Antrim, Jun: 82 mm Antrim, Jul: 90 mm Antrim, Aug: 96 mm Antrim, Sep: 110 mm Antrim, Oct: 117 mm Antrim, Nov: 81 mm Antrim, Dec: 104 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 Derry, Jan: 92 mm Derry, Feb: 96 mm Derry, Mar: 79 mm Derry, Apr: 89 mm Derry, May: 85 mm Derry, Jun: 86 mm Derry, Jul: 103 mm Derry, Aug: 110 mm Derry, Sep: 104 mm Derry, Oct: 125 mm Derry, Nov: 93 mm Derry, Dec: 124 mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daytime high by month
0 5 10 15 Antrim, Jan: 7 °C Antrim, Feb: 9 °C Antrim, Mar: 10 °C Antrim, Apr: 12 °C Antrim, May: 15 °C Antrim, Jun: 18 °C Antrim, Jul: 19 °C Antrim, Aug: 19 °C Antrim, Sep: 16 °C Antrim, Oct: 14 °C Antrim, Nov: 10 °C Antrim, 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 Derry, Jan: 7 °C Derry, Feb: 9 °C Derry, Mar: 10 °C Derry, Apr: 12 °C Derry, May: 15 °C Derry, Jun: 17 °C Derry, Jul: 18 °C Derry, Aug: 18 °C Derry, Sep: 16 °C Derry, Oct: 13 °C Derry, Nov: 10 °C Derry, Dec: 8 °C Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sunshine by month
0.0 5.0 10.0 Antrim, Jan: 4.0 hours a day Antrim, Feb: 4.6 hours a day Antrim, Mar: 6.7 hours a day Antrim, Apr: 9.2 hours a day Antrim, May: 10.8 hours a day Antrim, Jun: 11.1 hours a day Antrim, Jul: 10.1 hours a day Antrim, Aug: 10.0 hours a day Antrim, Sep: 7.7 hours a day Antrim, Oct: 5.1 hours a day Antrim, Nov: 4.3 hours a day Antrim, Dec: 2.9 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 Derry, Jan: 3.4 hours a day Derry, Feb: 4.2 hours a day Derry, Mar: 5.9 hours a day Derry, Apr: 8.4 hours a day Derry, May: 9.3 hours a day Derry, Jun: 8.8 hours a day Derry, Jul: 7.7 hours a day Derry, Aug: 8.7 hours a day Derry, Sep: 6.9 hours a day Derry, Oct: 4.5 hours a day Derry, Nov: 3.6 hours a day Derry, Dec: 2.6 hours a day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Rain days by month
0 5 10 15 Antrim, Jan: 11 days Antrim, Feb: 13 days Antrim, Mar: 15 days Antrim, Apr: 14 days Antrim, May: 14 days Antrim, Jun: 15 days Antrim, Jul: 17 days Antrim, Aug: 18 days Antrim, Sep: 14 days Antrim, Oct: 16 days Antrim, Nov: 14 days Antrim, 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 Derry, Jan: 15 days Derry, Feb: 17 days Derry, Mar: 15 days Derry, Apr: 16 days Derry, May: 16 days Derry, Jun: 18 days Derry, Jul: 19 days Derry, Aug: 19 days Derry, Sep: 16 days Derry, Oct: 19 days Derry, Nov: 17 days Derry, Dec: 18 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.