Cóbh 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
Poor
Best time to visit: April – August
What is the weather like in Cóbh in August?
In August, Cóbh 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 not an ideal month for a holiday in Cóbh.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 19 | 18 | 16 |
| 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 43 min06:16 – 21:00
- 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 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %35 %
- Few rainy daysweight 20 %53 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in August
- Wetsuit for longer swims
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Cóbh in August: quick answers
Is Cóbh hot in August?
No. In August, Cóbh is mild: daytime highs average 18 °C and nights drop to about 14 °C.
Can you swim in Cóbh 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 Cóbh in August?
Rain is frequent, with about 11 rainy days and 67 mm in total.
Cóbh month by month
The whole year in CóbhAll 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