Dundalk 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
Poor
Best time to visit: April – June, August – September
What is the weather like in Dundalk in October?
In October, Dundalk is cool: daytime highs average 13 °C, and nights cool down to about 9 °C. The sea averages 13.2 °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 81 mm in total. All in all, October is not an ideal month for a holiday in Dundalk.
October compared
How the weather changes from September to November. Tap a month to open it.
| SeptemberSep | OctoberOct | NovemberNov | |
|---|---|---|---|
| Score | 13 | 8 | 7 |
| Day | 16° | 13° | 10° |
| Night | 11° | 9° | 6° |
| Sea | 15° | 13° | 12° |
| Sun | 4 h | 3 h | 2 h |
| Rain days | 11 | 13 | 13 |
More details for October
- Daylight
- 10 h 40 min07:51 – 18:31
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 25 km/haverage daily peakAll months
- Cloud cover
- 74 %on averageAll months
- 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 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %5 %
- Few rainy daysweight 20 %34 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
Dundalk in October: quick answers
Is Dundalk hot in October?
No. In October, Dundalk is cool: daytime highs average 13 °C and nights drop to about 9 °C.
Can you swim in Dundalk in October?
Only if you don't mind cold water: in October the sea averages just 13.2 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Dundalk in October?
Rain is frequent, with about 13 rainy days and 81 mm in total.
Dundalk month by month
The whole year in DundalkAll 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). Sources & licences