Dublin Climate — Average Highs, Lows & Rainfall by Month
Dublin has a temperate climate with four distinct seasons. Daytime temperatures average 20°C / 67°F in July, the warmest month, and drop to 8°C / 47°F in January, the coldest. Overnight lows in January average 4°C / 38°F. Dublin receives about 1000 mm of rain a year across roughly 160 wet days, with October the wettest month.
Averages for 2021–2025 · Open-Meteo Historical Weather API (ERA5 reanalysis) · Updated 2026-10-05
Monthly averages in Dublin
Average daytime high, overnight low and rainfall for each month of the year.
| Month | Avg high | Avg low | Rainfall | Wet days |
|---|---|---|---|---|
| January | 8°C / 47°F | 4°C / 38°F | 71 mm | 12 |
| February | 10°C / 50°F | 5°C / 41°F | 69 mm | 13 |
| March | 11°C / 51°F | 5°C / 42°F | 79 mm | 13 |
| April | 12°C / 54°F | 6°C / 43°F | 82 mm | 12 |
| May | 15°C / 60°F | 9°C / 48°F | 67 mm | 12 |
| June | 18°C / 64°F | 12°C / 53°F | 71 mm | 13 |
| July | 20°C / 67°F | 13°C / 56°F | 92 mm | 14 |
| August | 20°C / 67°F | 13°C / 56°F | 72 mm | 14 |
| September | 17°C / 63°F | 12°C / 53°F | 107 mm | 14 |
| October | 15°C / 59°F | 10°C / 50°F | 120 mm | 17 |
| November | 11°C / 52°F | 7°C / 44°F | 82 mm | 12 |
| December | 10°C / 49°F | 6°C / 42°F | 89 mm | 14 |
Best time to visit Dublin
June, August, July offer the most comfortable weather in Dublin: mild daytime temperatures with the year's lowest rainfall — June averages 18°C (64°F); August averages 20°C (67°F); July averages 20°C (67°F).
Dublin climate FAQ
- What is the hottest month in Dublin?
- July is the hottest month in Dublin, with average daytime highs of 20°C / 67°F and overnight lows of 13°C / 56°F (averages for 2021–2025).
- What is the coldest month in Dublin?
- January is the coldest month in Dublin, with average highs of 8°C / 47°F and lows of 4°C / 38°F.
- How much rain does Dublin get a year?
- Dublin receives about 1000 mm of rainfall a year, spread over roughly 160 wet days. October is the wettest month (120 mm on average) and May the driest (67 mm).
- When is the best time to visit Dublin?
- June, August, July are the most comfortable months in Dublin: mild daytime temperatures with the least rainfall of the year.
Want today's conditions instead of averages?
See live weather in Dublin →Source: Open-Meteo Historical Weather API (ERA5 reanalysis), Open-Meteo. Averages are daily means across 2021–2025 and are rounded for display — for a live forecast see the Dublin weather page.