Rocky Bay Sea Water Temperature
A temperate beach on the Celtic Sea, warmest around August at about 16.1°C. Today's reading, 7-day forecast, and monthly averages below.
Rocky Bay water temperature
Wetsuit strongly recommended. Sudden entry may cause cold shock. Suitable only for brief, brisk plunges.
7-Day Water Temperature Forecast
Rocky Bay Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in Rocky Bay occurs inJune, July, August, September — peaking at16.1°C (61°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 | 8.9°C | 9.9°C | 11.1°C | Very Cold (< 16°C) |
| February | 8.3°C | 9.4°C | 10.2°C | Very Cold (< 16°C) |
| March | 8.3°C | 9.3°C | 10.2°C | Very Cold (< 16°C) |
| April | 8.4°C | 10.1°C | 11.6°C | Very Cold (< 16°C) |
| May | 10.1°C | 12°C | 14.2°C | Very Cold (< 16°C) |
| June | 12.5°C | 14.4°C | 16.7°C | Very Cold (< 16°C) |
| July | 13.8°C | 16°C | 18.9°C | Cool / Refreshing (16°C – 20°C) |
| August | 14.8°C | 16.1°C | 18.4°C | Cool / Refreshing (16°C – 20°C) |
| SeptemberCurrent | 14.2°C | 15.7°C | 17.6°C | Very Cold (< 16°C) |
| October | 12.4°C | 14.2°C | 15.7°C | Very Cold (< 16°C) |
| November | 10°C | 12.2°C | 13.6°C | Very Cold (< 16°C) |
| December | 9.5°C | 10.6°C | 11.9°C | Very Cold (< 16°C) |
Swimming FAQs for Rocky Bay
Is the sea warm enough to swim in Rocky Bay today?
Typical sea surface temperature in Rocky Bay this time of year is 15.7°C (60.3°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 Rocky Bay?
The highest water temperatures in Rocky Bay typically occur duringJune, July, August, September, when monthly averages reach peak seasonal levels.
What is the typical water temperature in Rocky Bay in September?
Historically in September, water temperatures in Rocky Bay average around15.7°C (60.3°F), fluctuating between a recorded minimum of 14.2°C and a maximum of 17.6°C.