Traeth Mawr Sea Water Temperature
A cool beach on the Irish Sea, warmest around September at about 15.4°C. Today's reading, 7-day forecast, and monthly averages below.
Traeth Mawr water temperature
Wetsuit strongly recommended. Sudden entry may cause cold shock. Suitable only for brief, brisk plunges.
7-Day Water Temperature Forecast
Traeth Mawr Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in Traeth Mawr occurs inJuly, August, September, October — peaking at15.4°C (59.7°F) in September.
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°C | 9.5°C | 11°C | Very Cold (< 16°C) |
| February | 7.3°C | 8.6°C | 9.5°C | Very Cold (< 16°C) |
| March | 7.1°C | 8.2°C | 9.2°C | Very Cold (< 16°C) |
| April | 8.2°C | 9.1°C | 10.1°C | Very Cold (< 16°C) |
| May | 8.5°C | 10.5°C | 11.7°C | Very Cold (< 16°C) |
| June | 11.6°C | 12.6°C | 13.7°C | Very Cold (< 16°C) |
| July | 11.9°C | 14°C | 15.5°C | Very Cold (< 16°C) |
| August | 14.7°C | 15.3°C | 16.2°C | Very Cold (< 16°C) |
| SeptemberCurrent | 14.2°C | 15.4°C | 16.6°C | Very Cold (< 16°C) |
| October | 13.1°C | 14.5°C | 16.1°C | Very Cold (< 16°C) |
| November | 10.6°C | 12.6°C | 14.2°C | Very Cold (< 16°C) |
| December | 10°C | 11°C | 12.5°C | Very Cold (< 16°C) |
Swimming FAQs for Traeth Mawr
Is the sea warm enough to swim in Traeth Mawr today?
Typical sea surface temperature in Traeth Mawr this time of year is 15.4°C (59.7°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 Traeth Mawr?
The highest water temperatures in Traeth Mawr typically occur duringJuly, August, September, October, when monthly averages reach peak seasonal levels.
What is the typical water temperature in Traeth Mawr in September?
Historically in September, water temperatures in Traeth Mawr average around15.4°C (59.7°F), fluctuating between a recorded minimum of 14.2°C and a maximum of 16.6°C.