Measured, not vibes
Best Time to Visit Dublin
By measured weather comfort, the top months for Dublin are August, July, June — and RouteVerdict's editorial pick, which also weighs crowds and prices, is May, June, July, August, September. The table below is computed from ERA5 reanalysis data for 2020–2024, measured at Dublin (17 m elevation).
Month by month
Dublin weather and comfort, 2020–2024
| Month | Avg high | Wet days | Comfort | Season |
|---|---|---|---|---|
| January | 8.3°C / 47°F | 10 | 21 | |
| February | 9.8°C / 50°F | 11.5 | 26 | |
| March | 10.4°C / 51°F | 11.5 | 29 | |
| April | 11.7°C / 53°F | 9.8 | 37 | Shoulder |
| May | 15.1°C / 59°F | 9.8 | 55 | |
| June | 17.6°C / 64°F | 10.7 | 66 | Best |
| July | 19°C / 66°F | 12.8 | 67 | Best |
| August | 19.1°C / 66°F | 11.2 | 71 | Best |
| September | 17.2°C / 63°F | 9.7 | 66 | |
| October | 14.5°C / 58°F | 14.5 | 46 | Shoulder |
| November | 11.2°C / 52°F | 8.7 | 35 | |
| December | 9.1°C / 48°F | 12.5 | 23 |
Comfort is RouteVerdict's 0–100 score: 100·exp(−(high−23)²/162) × (1 − min(0.35, wet days × 0.02)). The full method is on the methodology page. Weather data by Open-Meteo.com (ERA5, CC BY 4.0), 2020–2024 normals. Wet day = ≥1 mm precipitation.
What the seasons are actually like
Traveling to Dublin month by month
Dublin's comfort score peaks in August at 70.6, with an average high of 19.1°C and 11.2 wet days, just ahead of July's 67.4 and June's 65.7 — modest highs compared to warmer destinations, but Dublin's ceiling. October is notably wet, at 14.5 wet days, the highest of any month, with comfort dropping to 45.5. Winter (December–February) sees highs of 8.3–9.8°C and comfort scores of 21.1–26.3, genuinely mild but consistently damp.
FAQ
Dublin timing questions
What is the best month to visit Dublin?
By measured weather comfort (ERA5 2020–2024), the top months are August, July, and June, with August scoring highest. RouteVerdict's editorial pick is May, June, July, August, and September, which also weighs crowds, prices, and events.
What is the hottest month in Dublin?
August, with an average daily high of 19.1°C (66°F).
What is the rainiest month in Dublin?
October, averaging 14.5 days with at least 1 mm of precipitation.
When is shoulder season in Dublin?
October and April — the best-scoring months outside both the measured top three and RouteVerdict's editorial peak-season pick.
What is Dublin's wettest month?
October, averaging 14.5 wet days — more than any other month — with comfort dropping to 45.5 as a result.
What is Dublin's single best month for weather?
August, with an average high of 19.1°C, 11.2 wet days, and a comfort score of 70.6 — the highest measured for any month, though still modest by warmer-climate standards.