Dublin month by month
Plan your visit to Dublin by month. Compare weather, crowds, events, and prices across all twelve months with historical climate data.
Dublin's year moves through a narrow 12-degree temperature band. January sits at 8°C for a high, July and August top out at 20°C. Rain days stay between 11 and 14 in every month but October. October reaches 17. The warmest stretch runs June through September, from 17°C to 20°C. May and October share 15°C highs on either side. November through April, highs range from 8°C in January to 12°C in April.
TTDI publishes 12 month guides for Dublin beneath this index. Start with July or August if your window is summer. Both average 20°C highs, though July logs 14 rain days to August's 13. April averages 12°C with 12 rain days. September is 5 degrees warmer at 17°C with 13 rain days. For winter, compare January's 8°C against February and December at 10°C. November records the fewest rain days of the year at 11, with highs at 11°C.
October needs the most planning in Dublin's calendar. Its 17 rain days are 3 above the next-wettest month, and temperatures have already dropped from September's 17°C to 15°C.
October is Dublin's most decisive planning month, recording 17 rain days when no other month in the measured year exceeds 14.
- January
- High
- 8°C
- Low
- 4°C
- Rain
- 71 mm
January is Dublin's darkest and coldest month, and you should know that going in. You're looking at roughly eight hours of daylight, temperatures hovering around 8°C (47°F) during…
- February
- High
- 10°C
- Low
- 5°C
- Rain
- 69 mm
February in Dublin is cold, grey, and damp, and honestly, there is no sense pretending otherwise. Daytime temperatures hover around 10°C (50°F), dropping to about 5°C (41°F) after…
- March
- High
- 11°C
- Low
- 5°C
- Rain
- 78 mm
March in Dublin is, above all else, about St. Patrick's Day. The festival around March 17th pulls roughly half a million people onto the streets for the parade alone, and the…
- April
- High
- 12°C
- Low
- 6°C
- Rain
- 82 mm
April in Dublin is the month the city starts to believe spring might stick around. Might. You'll get days where the sun breaks through and the parks fill up like someone flipped a…
- May
- High
- 15°C
- Low
- 9°C
- Rain
- 67 mm
May is when Dublin earns its reputation as a city worth crossing an ocean for. The single most important thing to know: this is statistically Dublin's driest month, with around…
- June
- High
- 18°C
- Low
- 12°C
- Rain
- 71 mm
The defining fact of June in Dublin is the light. Sunset doesn't happen until nearly ten o'clock at night, and even then a sort of silvery twilight lingers past eleven. You get…
- July
- High
- 20°C
- Low
- 13°C
- Rain
- 92 mm
July in Dublin is defined by the light. The sun doesn't properly set until nearly half ten at night, and there's a pale glow in the sky from around five in the morning: close to…
- August
- High
- 20°C
- Low
- 13°C
- Rain
- 72 mm
August might be Dublin's warmest month on paper, but let's be clear about what 'warm' means at 53 degrees north: average highs sit around 19.5°C (67°F), which is a comfortable…
- September
- High
- 17°C
- Low
- 12°C
- Rain
- 107 mm
September in Dublin is defined by rain. That's the honest starting point. With 107mm of rainfall spread across roughly 13 wet days, this is one of the wettest months of the year:…
- October
- High
- 15°C
- Low
- 10°C
- Rain
- 120 mm
October in Dublin is defined by two things: the city's deep, sincere connection to Halloween (Ireland considers itself the birthplace of the holiday, and they have a point) and the…
- November
- High
- 11°C
- Low
- 7°C
- Rain
- 82 mm
November in Dublin means darkness arrives early: sunset drops to around half four in the afternoon, and by the time you're finishing a late lunch the streetlights are already…
- December
- High
- 10°C
- Low
- 6°C
- Rain
- 89 mm
December in Dublin is dark. That's the first thing to reckon with: sunrise doesn't come until after half eight in the morning, and by four o'clock the sky has gone black again.…