Dublin weather in October
Temperature, sea and sunshine in October: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in October
Fair
Best time to visit: June – September
What is the weather like in Dublin in October?
In October, Dublin is cool: daytime highs average 14 °C, and nights cool down to about 9 °C. The sea averages 13.6 °C – swimming is only for the hardy. The sun is scarce, with only about 3 hours a day. Rain is frequent, with about 13 rainy days and 79 mm in total. All in all, October is a so-so month for a holiday in Dublin.
October compared
How the weather changes from September to November. Tap a month to open it.
| SeptemberSep | OctoberOct | NovemberNov | |
|---|---|---|---|
| Score | 60 | 40 | 22 |
| Day | 17° | 14° | 10° |
| Night | 12° | 9° | 7° |
| Sea | 15° | 14° | 12° |
| Sun | 4 h | 3 h | 2 h |
| Rain days | 12 | 13 | 13 |
More details for October
- Daylight
- 10 h 42 min07:50 – 18:32
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 24 km/haverage daily peak
- Cloud cover
- 73 %on average
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+1Europe/Dublin
How the score comes together
- Temperatureweight 50 %55 %
- Sunshineweight 20 %5 %
- Few rainy daysweight 30 %39 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
Dublin in October: quick answers
Is Dublin hot in October?
No. In October, Dublin is cool: daytime highs average 14 °C and nights drop to about 9 °C.
Can you swim in Dublin in October?
Only if you don't mind cold water: in October the sea averages just 13.6 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Dublin in October?
Rain is frequent, with about 13 rainy days and 79 mm in total.
Dublin month by month
The whole year in DublinAll destinations: IrelandWhere to go in OctoberSea temperature in October
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)