Compare Irish counties
Pick two or three counties to see their rainfall, sunshine and temperatures side by side, month by month.
Sligo gets 36% more rain a year than Leitrim (1670 mm against 1231 mm), with 45 more rain days and 100 fewer hours of sunshine. July afternoons average 18°C in Sligo and 19°C in Leitrim; January nights 2°C and 3°C.
Rainfall by month
0 50 100 150 Sligo, Jan: 127 mm Sligo, Feb: 140 mm Sligo, Mar: 125 mm Sligo, Apr: 107 mm Sligo, May: 119 mm Sligo, Jun: 132 mm Sligo, Jul: 146 mm Sligo, Aug: 166 mm Sligo, Sep: 138 mm Sligo, Oct: 171 mm Sligo, Nov: 136 mm Sligo, Dec: 163 mm Leitrim, Jan: 83 mm Leitrim, Feb: 99 mm Leitrim, Mar: 91 mm Leitrim, Apr: 90 mm Leitrim, May: 83 mm Leitrim, Jun: 92 mm Leitrim, Jul: 103 mm Leitrim, Aug: 108 mm Leitrim, Sep: 104 mm Leitrim, Oct: 150 mm Leitrim, Nov: 106 mm Leitrim, Dec: 122 mm Mayo, Jan: 114 mm Mayo, Feb: 132 mm Mayo, Mar: 113 mm Mayo, Apr: 87 mm Mayo, May: 93 mm Mayo, Jun: 113 mm Mayo, Jul: 102 mm Mayo, Aug: 131 mm Mayo, Sep: 114 mm Mayo, Oct: 172 mm Mayo, Nov: 130 mm Mayo, Dec: 141 mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daytime high by month
0 5 10 15 Sligo, Jan: 7 °C Sligo, Feb: 9 °C Sligo, Mar: 10 °C Sligo, Apr: 12 °C Sligo, May: 15 °C Sligo, Jun: 17 °C Sligo, Jul: 18 °C Sligo, Aug: 18 °C Sligo, Sep: 16 °C Sligo, Oct: 13 °C Sligo, Nov: 10 °C Sligo, Dec: 8 °C Leitrim, Jan: 7 °C Leitrim, Feb: 9 °C Leitrim, Mar: 11 °C Leitrim, Apr: 13 °C Leitrim, May: 16 °C Leitrim, Jun: 18 °C Leitrim, Jul: 19 °C Leitrim, Aug: 19 °C Leitrim, Sep: 17 °C Leitrim, Oct: 14 °C Leitrim, Nov: 10 °C Leitrim, Dec: 8 °C Mayo, Jan: 8 °C Mayo, Feb: 9 °C Mayo, Mar: 11 °C Mayo, Apr: 13 °C Mayo, May: 15 °C Mayo, Jun: 17 °C Mayo, Jul: 18 °C Mayo, Aug: 18 °C Mayo, Sep: 17 °C Mayo, Oct: 14 °C Mayo, Nov: 11 °C Mayo, Dec: 9 °C Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sunshine by month
0.0 2.5 5.0 7.5 10.0 Sligo, Jan: 3.2 hours a day Sligo, Feb: 4.1 hours a day Sligo, Mar: 5.9 hours a day Sligo, Apr: 8.2 hours a day Sligo, May: 10.0 hours a day Sligo, Jun: 8.9 hours a day Sligo, Jul: 7.9 hours a day Sligo, Aug: 8.8 hours a day Sligo, Sep: 6.8 hours a day Sligo, Oct: 4.5 hours a day Sligo, Nov: 3.5 hours a day Sligo, Dec: 2.6 hours a day Leitrim, Jan: 3.8 hours a day Leitrim, Feb: 4.2 hours a day Leitrim, Mar: 5.7 hours a day Leitrim, Apr: 8.3 hours a day Leitrim, May: 10.0 hours a day Leitrim, Jun: 9.5 hours a day Leitrim, Jul: 8.4 hours a day Leitrim, Aug: 8.9 hours a day Leitrim, Sep: 7.0 hours a day Leitrim, Oct: 4.9 hours a day Leitrim, Nov: 4.1 hours a day Leitrim, Dec: 2.9 hours a day Mayo, Jan: 3.3 hours a day Mayo, Feb: 4.2 hours a day Mayo, Mar: 5.6 hours a day Mayo, Apr: 8.1 hours a day Mayo, May: 9.7 hours a day Mayo, Jun: 8.8 hours a day Mayo, Jul: 8.4 hours a day Mayo, Aug: 8.7 hours a day Mayo, Sep: 6.9 hours a day Mayo, Oct: 4.7 hours a day Mayo, Nov: 3.6 hours a day Mayo, Dec: 2.8 hours a day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Rain days by month
0 10 20 Sligo, Jan: 18 days Sligo, Feb: 20 days Sligo, Mar: 17 days Sligo, Apr: 17 days Sligo, May: 16 days Sligo, Jun: 21 days Sligo, Jul: 23 days Sligo, Aug: 22 days Sligo, Sep: 19 days Sligo, Oct: 22 days Sligo, Nov: 20 days Sligo, Dec: 20 days Leitrim, Jan: 14 days Leitrim, Feb: 16 days Leitrim, Mar: 16 days Leitrim, Apr: 16 days Leitrim, May: 14 days Leitrim, Jun: 16 days Leitrim, Jul: 15 days Leitrim, Aug: 18 days Leitrim, Sep: 16 days Leitrim, Oct: 19 days Leitrim, Nov: 16 days Leitrim, Dec: 17 days Mayo, Jan: 15 days Mayo, Feb: 18 days Mayo, Mar: 16 days Mayo, Apr: 15 days Mayo, May: 15 days Mayo, Jun: 19 days Mayo, Jul: 18 days Mayo, Aug: 20 days Mayo, Sep: 16 days Mayo, Oct: 20 days Mayo, Nov: 17 days Mayo, 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.