| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 8.4° | 2.2° | 63mm | 16.4 | 33 |
| February | 9.3° | 2.4° | 56.8mm | 16.4 | 36 |
| March | 10.9° | 3.3° | 56.2mm | 15.9 | 41 |
| April | 13.2° | 4.6° | 52.6mm | 14.4 | 49 |
| May | 16.1° | 7.2° | 57.2mm | 14.5 | 59 |
| June | 18.7° | 9.8° | 55.4mm | 13.3 | 69 |
| July | 20.4° | 11.8° | 60.7mm | 15 | 70 |
| August | 20.1° | 11.7° | 68.7mm | 15.1 | 70 |
| September | 18° | 9.8° | 61.7mm | 13.9 | 66 |
| October | 14.8° | 7.6° | 81.4mm | 17.2 | 53 |
| November | 10.9° | 4.4° | 84.5mm | 17.1 | 41 |
| December | 9° | 2.9° | 73.7mm | 17.6 | 35 |
January in Dublin averages a daily high of 8.4°C with nights around 2.2°C. Expect roughly 16.4 wet days totalling 63mm. A hard month to visit for comfort alone.
February in Dublin averages a daily high of 9.3°C with nights around 2.4°C. Expect roughly 16.4 wet days totalling 56.8mm. Demanding conditions — pack for it and plan indoor options.
March in Dublin averages a daily high of 10.9°C with nights around 3.3°C. Expect roughly 15.9 wet days totalling 56.2mm. Demanding conditions — pack for it and plan indoor options.
April in Dublin averages a daily high of 13.2°C with nights around 4.6°C. Expect roughly 14.4 wet days totalling 52.6mm. Demanding conditions — pack for it and plan indoor options.
May in Dublin averages a daily high of 16.1°C with nights around 7.2°C. Expect roughly 14.5 wet days totalling 57.2mm. Generally workable, with some weather to plan around.
June in Dublin averages a daily high of 18.7°C with nights around 9.8°C. Expect roughly 13.3 wet days totalling 55.4mm. Generally workable, with some weather to plan around.
July in Dublin averages a daily high of 20.4°C with nights around 11.8°C. Expect roughly 15 wet days totalling 60.7mm. Generally workable, with some weather to plan around.
August in Dublin averages a daily high of 20.1°C with nights around 11.7°C. Expect roughly 15.1 wet days totalling 68.7mm. Generally workable, with some weather to plan around.
September in Dublin averages a daily high of 18°C with nights around 9.8°C. Expect roughly 13.9 wet days totalling 61.7mm. Generally workable, with some weather to plan around.
October in Dublin averages a daily high of 14.8°C with nights around 7.6°C. Expect roughly 17.2 wet days totalling 81.4mm. Demanding conditions — pack for it and plan indoor options.
November in Dublin averages a daily high of 10.9°C with nights around 4.4°C. Expect roughly 17.1 wet days totalling 84.5mm. Demanding conditions — pack for it and plan indoor options.
December in Dublin averages a daily high of 9°C with nights around 2.9°C. Expect roughly 17.6 wet days totalling 73.7mm. Demanding conditions — pack for it and plan indoor options.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Dublin peaks at 70.
Based on 30 years of records, June–September scores highest for comfort in Dublin, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 20.4°C.
November is the wettest, averaging 84.5mm of rain across roughly 17.1 wet days.
January is the coolest month, with average daily highs around 8.4°C.