Old Town Beach Sea Water Temperature
A temperate beach on the Celtic Sea, warmest around August at about 17°C. Today's reading, 7-day forecast, and monthly averages below.
Old Town Beach water temperature
Invigorating and crisp. Tolerable for active swimming, but chilly for prolonged casual bathing.
7-Day Water Temperature Forecast
Old Town Beach Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in Old Town Beach occurs inJune, July, August, September — peaking at17°C (62.6°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 | 9.8°C | 10.8°C | 12°C | Very Cold (< 16°C) |
| February | 9.3°C | 10.2°C | 10.9°C | Very Cold (< 16°C) |
| March | 9.4°C | 10°C | 11°C | Very Cold (< 16°C) |
| April | 9.8°C | 10.6°C | 11.8°C | Very Cold (< 16°C) |
| May | 10.6°C | 12.2°C | 14.2°C | Very Cold (< 16°C) |
| June | 12.7°C | 14.7°C | 16.6°C | Very Cold (< 16°C) |
| July | 14.8°C | 16.6°C | 20°C | Cool / Refreshing (16°C – 20°C) |
| August | 15.6°C | 17°C | 18.1°C | Cool / Refreshing (16°C – 20°C) |
| SeptemberCurrent | 14.4°C | 16.2°C | 18.5°C | Cool / Refreshing (16°C – 20°C) |
| October | 12.7°C | 14.5°C | 15.7°C | Very Cold (< 16°C) |
| November | 10.6°C | 12.7°C | 14°C | Very Cold (< 16°C) |
| December | 10.8°C | 11.6°C | 12.6°C | Very Cold (< 16°C) |
Swimming FAQs for Old Town Beach
Is the sea warm enough to swim in Old Town Beach today?
Typical sea surface temperature in Old Town Beach this time of year is 16.2°C (61.2°F) — classified as Cool / Refreshing (16°C – 20°C). Invigorating and crisp. Tolerable for active swimming, but chilly for prolonged casual bathing. Live readings load automatically.
What are the warmest months for swimming in Old Town Beach?
The highest water temperatures in Old Town Beach typically occur duringJune, July, August, September, when monthly averages reach peak seasonal levels.
What is the typical water temperature in Old Town Beach in September?
Historically in September, water temperatures in Old Town Beach average around16.2°C (61.2°F), fluctuating between a recorded minimum of 14.4°C and a maximum of 18.5°C.