Compare Irish counties
Pick two or three counties to see their rainfall, sunshine and temperatures side by side, month by month.
Galway gets 42% more rain a year than Dublin (1424 mm against 1000 mm), with 36 more rain days and 299 fewer hours of sunshine. July afternoons average 19°C in Galway and 20°C in Dublin; January nights 3°C and 3°C.
Rainfall by month
0 100 200 Galway, Jan: 110 mm Galway, Feb: 120 mm Galway, Mar: 115 mm Galway, Apr: 88 mm Galway, May: 83 mm Galway, Jun: 103 mm Galway, Jul: 116 mm Galway, Aug: 121 mm Galway, Sep: 110 mm Galway, Oct: 176 mm Galway, Nov: 134 mm Galway, Dec: 148 mm Dublin, Jan: 71 mm Dublin, Feb: 69 mm Dublin, Mar: 79 mm Dublin, Apr: 81 mm Dublin, May: 67 mm Dublin, Jun: 71 mm Dublin, Jul: 92 mm Dublin, Aug: 72 mm Dublin, Sep: 107 mm Dublin, Oct: 121 mm Dublin, Nov: 81 mm Dublin, Dec: 89 mm Cork, Jan: 95 mm Cork, Feb: 139 mm Cork, Mar: 116 mm Cork, Apr: 77 mm Cork, May: 95 mm Cork, Jun: 72 mm Cork, Jul: 94 mm Cork, Aug: 81 mm Cork, Sep: 130 mm Cork, Oct: 204 mm Cork, Nov: 119 mm Cork, Dec: 123 mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daytime high by month
0 5 10 15 Galway, Jan: 8 °C Galway, Feb: 10 °C Galway, Mar: 11 °C Galway, Apr: 13 °C Galway, May: 16 °C Galway, Jun: 18 °C Galway, Jul: 19 °C Galway, Aug: 19 °C Galway, Sep: 17 °C Galway, Oct: 14 °C Galway, Nov: 11 °C Galway, Dec: 9 °C Dublin, Jan: 8 °C Dublin, Feb: 10 °C Dublin, Mar: 11 °C Dublin, Apr: 12 °C Dublin, May: 15 °C Dublin, Jun: 18 °C Dublin, Jul: 20 °C Dublin, Aug: 20 °C Dublin, Sep: 17 °C Dublin, Oct: 15 °C Dublin, Nov: 11 °C Dublin, Dec: 10 °C Cork, Jan: 8 °C Cork, Feb: 10 °C Cork, Mar: 11 °C Cork, Apr: 13 °C Cork, May: 16 °C Cork, Jun: 18 °C Cork, Jul: 20 °C Cork, Aug: 20 °C Cork, Sep: 17 °C Cork, Oct: 14 °C Cork, Nov: 11 °C Cork, Dec: 9 °C Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sunshine by month
0.0 5.0 10.0 Galway, Jan: 3.9 hours a day Galway, Feb: 4.4 hours a day Galway, Mar: 5.8 hours a day Galway, Apr: 8.5 hours a day Galway, May: 10.5 hours a day Galway, Jun: 9.5 hours a day Galway, Jul: 9.2 hours a day Galway, Aug: 9.2 hours a day Galway, Sep: 7.2 hours a day Galway, Oct: 5.2 hours a day Galway, Nov: 4.0 hours a day Galway, Dec: 3.0 hours a day Dublin, Jan: 4.3 hours a day Dublin, Feb: 4.6 hours a day Dublin, Mar: 7.0 hours a day Dublin, Apr: 9.4 hours a day Dublin, May: 11.2 hours a day Dublin, Jun: 11.7 hours a day Dublin, Jul: 10.2 hours a day Dublin, Aug: 10.2 hours a day Dublin, Sep: 8.0 hours a day Dublin, Oct: 5.9 hours a day Dublin, Nov: 4.3 hours a day Dublin, Dec: 3.4 hours a day Cork, Jan: 4.1 hours a day Cork, Feb: 4.6 hours a day Cork, Mar: 6.3 hours a day Cork, Apr: 8.7 hours a day Cork, May: 10.1 hours a day Cork, Jun: 9.6 hours a day Cork, Jul: 9.5 hours a day Cork, Aug: 9.5 hours a day Cork, Sep: 7.3 hours a day Cork, Oct: 5.2 hours a day Cork, Nov: 4.3 hours a day Cork, Dec: 3.2 hours a day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Rain days by month
0 5 10 15 20 Galway, Jan: 14 days Galway, Feb: 18 days Galway, Mar: 16 days Galway, Apr: 14 days Galway, May: 16 days Galway, Jun: 17 days Galway, Jul: 17 days Galway, Aug: 17 days Galway, Sep: 15 days Galway, Oct: 20 days Galway, Nov: 17 days Galway, Dec: 17 days Dublin, Jan: 12 days Dublin, Feb: 13 days Dublin, Mar: 13 days Dublin, Apr: 12 days Dublin, May: 13 days Dublin, Jun: 13 days Dublin, Jul: 15 days Dublin, Aug: 13 days Dublin, Sep: 14 days Dublin, Oct: 17 days Dublin, Nov: 12 days Dublin, Dec: 14 days Cork, Jan: 12 days Cork, Feb: 15 days Cork, Mar: 15 days Cork, Apr: 13 days Cork, May: 14 days Cork, Jun: 13 days Cork, Jul: 13 days Cork, Aug: 14 days Cork, Sep: 14 days Cork, Oct: 18 days Cork, Nov: 16 days Cork, Dec: 16 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.