Old Head Beach sea temperature
Sea-surface temperature for Old Head Beach, Ireland, with the 7-day outlook and what to wear.
What is the sea temperature at Old Head Beach today? (18 Oct)
The sea at Old Head Beach is 13.7 °C today. Winter kit — a 5/4 with boots, and gloves if you feel the cold in your hands. Most people add boots and gloves. The sea is about 4 °C warmer than the air, so it will feel mild going in.
Old Head Beach sea temperature — next 7 days
Sea temperature is cooling across the week, by about 1.6 °C from start to end.
| Date | Sea temp | Range | Suggested wetsuit |
|---|---|---|---|
| Sun 18 Octtoday | 13.7 °C13.7–13.8 °C | 13.7–13.8 °C | 5/4 mm full suit |
| Mon 19 Oct | 13.6 °C13.6–13.7 °C | 13.6–13.7 °C | 5/4 mm full suit |
| Tue 20 Oct | 13.5 °C13.3–13.6 °C | 13.3–13.6 °C | 5/4 mm full suit |
| Wed 21 Oct | 13.1 °C13.0–13.3 °C | 13.0–13.3 °C | 5/4 mm full suit |
| Thu 22 Oct | 12.9 °C12.9–13.0 °C | 12.9–13.0 °C | 5/4 mm full suit |
| Fri 23 Oct | 12.7 °C12.3–12.9 °C | 12.3–12.9 °C | 5/4 mm full suit |
| Sat 24 Oct | 12.1 °C12.1–12.3 °C | 12.1–12.3 °C | 5/4 mm full suit |
Figures are modelled sea-surface temperature, not readings from a buoy or a thermometer in the shallows — expect a degree either way, and more in a shallow bay on a hot afternoon. Wetsuit suggestions are general guidance: cold tolerance varies a lot between people, and wind, session length and air temperature matter as much as the water does.
What wetsuit for what sea temperature?
| Sea temperature | Wetsuit | Extras |
|---|---|---|
| 24 °C and above | Boardshorts or swimsuit | — |
| 22–24 °C | Rash vest or 1 mm top | — |
| 19–22 °C | 2 mm shorty or spring suit | — |
| 17–19 °C | 3/2 mm full suit | — |
| 14–17 °C | 4/3 mm full suitboots on longer sessions | boots on longer sessions |
| 11–14 °COld Head Beach today | 5/4 mm full suitboots and gloves | boots and gloves |
| 7–11 °C | 5/4/3 mm hooded full suitboots and gloves | boots and gloves |
| Below 7 °C | 6/5 mm hooded full suitthick boots and gloves | thick boots and gloves |
Conditions at Old Head Beach
Water temperature is one input. For wave height, wind and a 0–100 score per sport and ability level, see the full forecast.
Sea temperature near Old Head Beach
Frequently asked questions.
What is the sea temperature at Old Head Beach today?
The sea at Old Head Beach, Ireland is 13.7 °C today. This is modelled sea-surface temperature rather than a buoy reading, so allow a degree either way.
What wetsuit do I need at Old Head Beach?
At 13.7 °C, 5/4 mm full suit is the usual choice at Old Head Beach. Winter kit — a 5/4 with boots, and gloves if you feel the cold in your hands. Most people add boots and gloves. Cold tolerance varies, and wind and session length matter as much as the water temperature.
Is the sea warm enough to swim at Old Head Beach?
At 13.7 °C the sea at Old Head Beach is cold. Short swims only without a wetsuit, and be aware of cold-water shock.
How much does the sea temperature at Old Head Beach change over a week?
Over the next 7 days the sea at Old Head Beach stays between 12.1 °C and 13.8 °C. Open water changes temperature slowly, so it rarely moves much inside a week — seasonal change is what matters.
