Holywell Beach Sea Water Temperature
A temperate beach on the Celtic Sea, warmest around August at about 16.5°C. Today's reading, 7-day forecast, and monthly averages below.
Holywell Beach water temperature
Wetsuit strongly recommended. Sudden entry may cause cold shock. Suitable only for brief, brisk plunges.
7-Day Water Temperature Forecast
Holywell Beach Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in Holywell Beach occurs inJuly, August, September, October — peaking at16.5°C (61.7°F) in August.
Year-Round Water Temperature Curve (°C / °F)
Hover a bar for detailsFull 12-month data table — min / avg / max & swimming comfort
| Month | Min Water Temp | Average Water Temp | Max Water Temp | Swimming Comfort |
|---|---|---|---|---|
| January | 8.6°C | 10.4°C | 11.5°C | Very Cold (< 16°C) |
| February | 8.8°C | 9.7°C | 10.6°C | Very Cold (< 16°C) |
| March | 8.5°C | 9.5°C | 10.5°C | Very Cold (< 16°C) |
| April | 8.9°C | 10.4°C | 12°C | Very Cold (< 16°C) |
| May | 10.3°C | 12°C | 14.2°C | Very Cold (< 16°C) |
| June | 12.5°C | 14.5°C | 17°C | Very Cold (< 16°C) |
| July | 13.9°C | 16.2°C | 19.4°C | Cool / Refreshing (16°C – 20°C) |
| August | 15.6°C | 16.5°C | 18.1°C | Cool / Refreshing (16°C – 20°C) |
| SeptemberCurrent | 14.3°C | 15.9°C | 18.1°C | Very Cold (< 16°C) |
| October | 13.3°C | 14.9°C | 16.2°C | Very Cold (< 16°C) |
| November | 10.7°C | 13.2°C | 14.7°C | Very Cold (< 16°C) |
| December | 10°C | 11.4°C | 12.7°C | Very Cold (< 16°C) |
Swimming FAQs for Holywell Beach
Is the sea warm enough to swim in Holywell Beach today?
Typical sea surface temperature in Holywell Beach this time of year is 15.9°C (60.6°F) — classified as Very Cold (< 16°C). Wetsuit strongly recommended. Sudden entry may cause cold shock. Suitable only for brief, brisk plunges. Live readings load automatically.
What are the warmest months for swimming in Holywell Beach?
The highest water temperatures in Holywell Beach typically occur duringJuly, August, September, October, when monthly averages reach peak seasonal levels.
What is the typical water temperature in Holywell Beach in September?
Historically in September, water temperatures in Holywell Beach average around15.9°C (60.6°F), fluctuating between a recorded minimum of 14.3°C and a maximum of 18.1°C.