Climate guideThirty-year normals for Dublin
Dublin climate by month
Oceanic · CfbBest Jun–Aug
Annual mean10°day and night
Seasonal swing10°warmest vs coolest
Precipitation940 mm191 wet days a year
53.33° N, 6.25° WElevation 17 mUTC+1 · Irish Standard Time
When to goDublin · weather score
Best timeJun–Aug
October: high / low14° / 8°
iSummary
What the weather is like
Dublin has an oceanic climate (Köppen Cfb): rain spread through the year and no real dry season.
The warmest month is July, when afternoons average 20° and nights 12°. January is the coolest month, with highs of 8° and lows of 3°. The difference between the warmest and the coolest month is about 10°.
About 940 mm of precipitation falls in an average year. November is the wettest month (96 mm, 20 wet days) and April the driest (66 mm, 13 wet days). Cloud cover ranges from 42% in May to 51% in January.
The sea reaches about 15° in August. Sea temperatures lag the air by a month or two, so late summer is usually warmer for swimming than early summer.
Year in figures
- Hottest afternoons
- 20° · July
- Coldest nights
- 3° · February
- Wettest month
- November
- Driest month
- April
- Clearest skies
- May · 42% cloud
- Warmest sea
- 15° · August
- Longest day
- 16 h 58 min
- Shortest day
- 7 h 33 min
iiCharts
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columns, sea temperature lineTemperature curve
Average high, low and seaDaylight
Hours between sunrise and sunset on the 15th of each monthiiiData table
Climate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 8° | 9° | 11° | 13° | 16° | 18° | 20° | 19° | 18° | 14° | 11° | 9° |
| Average low | 3° | 3° | 3° | 5° | 7° | 10° | 12° | 12° | 10° | 8° | 5° | 3° |
| Precipitation | 85 mm | 67 mm | 72 mm | 66 mm | 75 mm | 70 mm | 64 mm | 77 mm | 73 mm | 99 mm | 96 mm | 96 mm |
| Wet days (≥1 mm) | 18.7 | 15.7 | 15.2 | 12.8 | 13.3 | 12.8 | 15.3 | 16.1 | 13.7 | 18.1 | 19.9 | 19.3 |
| Cloud cover | 51% | 50% | 50% | 45% | 42% | 47% | 47% | 47% | 46% | 47% | 50% | 50% |
| Sea temperature | 9° | 8° | 8° | 9° | 11° | 13° | 15° | 15° | 15° | 13° | 12° | 11° |
| Daylight | 8h 03 | 9h 51 | 11h 48 | 13h 58 | 15h 52 | 16h 58 | 16h 31 | 14h 50 | 12h 44 | 10h 39 | 8h 40 | 7h 33 |
| Month score | 16 | 17 | 19 | 37 | 51 | 63 | 60 | 60 | 58 | 40 | 20 | 17 |
ivMonth by month
Dublin in every month
January16
8° / 3°
85 mm · 18.7 wet days
February17
9° / 3°
67 mm · 15.7 wet days
March19
11° / 3°
72 mm · 15.2 wet days
April37
13° / 5°
66 mm · 12.8 wet days
May51
16° / 7°
75 mm · 13.3 wet days
June63
18° / 10°
70 mm · 12.8 wet days
July60
20° / 12°
64 mm · 15.3 wet days
August60
19° / 12°
77 mm · 16.1 wet days
September58
18° / 10°
73 mm · 13.7 wet days
October40
14° / 8°
99 mm · 18.1 wet days
November20
11° / 5°
96 mm · 19.9 wet days
December17
9° / 3°
96 mm · 19.3 wet days