Cork weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Good
Best time to visit: June – September
What is the weather like in Cork in August?
In August, Cork is mild: daytime highs average 18 °C, and nights cool down to about 14 °C. The sea averages 16.4 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 67 mm in total. All in all, August is a good month for a holiday in Cork.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 74 | 73 | 64 |
| Day | 18° | 18° | 17° |
| Night | 14° | 14° | 13° |
| Sea | 16° | 16° | 16° |
| Sun | 5 h | 5 h | 4 h |
| Rain days | 10 | 11 | 10 |
More details for August
- Daylight
- 14 h 44 min06:17 – 21:01
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 25 km/haverage daily peakAll months
- Cloud cover
- 71 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+1Europe/Dublin
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %35 %
- Few rainy daysweight 30 %53 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in August
- Wetsuit for longer swims
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Cork in August: quick answers
Is Cork hot in August?
No. In August, Cork is mild: daytime highs average 18 °C and nights drop to about 14 °C.
Can you swim in Cork in August?
Only if you don't mind cold water: in August the sea averages just 16.4 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Cork in August?
Rain is frequent, with about 11 rainy days and 67 mm in total.
Cork month by month
The whole year in CorkAll destinations: IrelandWhere to go in AugustSea temperature in August
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