Irish sea temperature today
Live readings from the Marine Institute's offshore weather buoys, updated hourly. Use them as a guide to the season, not as the temperature at your beach.
Irish Sea, east of Dublin Bay
14.6°C
Cold. Cold water shock can occur below 15°C, and is strongest between 10°C and 15°C.
7 days: 14.6°C to 14.8°C - Wave height
- 0.4 m
- Wind
- 9 knots
- Wind direction
- From NE (56°)
- Gusts
- 12 knots
- Air temperature
- 11.8°C
- Read at
- Sun, 18 Oct, 20:00
Atlantic, south-west of Ireland
14.3°C
Cold. Cold water shock can occur below 15°C, and is strongest between 10°C and 15°C.
7 days: 14.3°C to 15.4°C - Wave height
- 0.9 m
- Wind
- 5 knots
- Wind direction
- From E (80°)
- Gusts
- 8 knots
- Air temperature
- 13.3°C
- Read at
- Sun, 18 Oct, 20:00
Celtic Sea, south-east of Ireland
15.5°C
Cool. Above 15°C, but still much colder than most people expect. Cold still saps strength quickly.
7 days: 15.5°C to 16.1°C - Wave height
- 0.8 m
- Wind
- 11 knots
- Wind direction
- From NNE (33°)
- Gusts
- 15 knots
- Air temperature
- 12.5°C
- Read at
- Sun, 18 Oct, 20:00
Atlantic, far west of Ireland
14.1°C
Cold. Cold water shock can occur below 15°C, and is strongest between 10°C and 15°C.
7 days: 13.9°C to 14.4°C - Wave height
- 2.1 m
- Wind
- 3 knots
- Wind direction
- From NNW (345°)
- Gusts
- 6 knots
- Air temperature
- 13.1°C
- Read at
- Sun, 18 Oct, 20:00
How to read these numbers
The Irish Coast Guard, Water Safety Ireland and the RNLI say cold water shock can occur in water below 15°C. Most Irish water is below that for much of the year. Read cold water shock and Float to Live before any open water swim, and winter sea temperatures by month for the seasonal pattern.
Wave height and wind describe conditions at the buoy, which sits far out at sea. They tell you the weather system is rough or calm, but they do not replace the Met Éireann marine forecast, local lifeguard flags or tide times at your beach. See tides and currents.
Where the data comes from
Data: Irish Weather Buoy Network, Marine Institute (Ireland), published under the Creative Commons Attribution 4.0 licence via the Marine Institute ERDDAP server. Readings are provisional, can be missing or delayed, and are shown as received. Icy.ie refreshes them about every 15 minutes.