Porth Nanven 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.
Porth Nanven water temperature
Wetsuit strongly recommended. Sudden entry may cause cold shock. Suitable only for brief, brisk plunges.
7-Day Water Temperature Forecast
Porth Nanven Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in Porth Nanven 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 | 9.4°C | 10.6°C | 11.8°C | Very Cold (< 16°C) |
| February | 9.1°C | 10°C | 10.7°C | Very Cold (< 16°C) |
| March | 8.7°C | 9.7°C | 10.5°C | Very Cold (< 16°C) |
| April | 9.5°C | 10.4°C | 11.8°C | Very Cold (< 16°C) |
| May | 10.3°C | 11.9°C | 14°C | Very Cold (< 16°C) |
| June | 12.4°C | 14.3°C | 16.2°C | Very Cold (< 16°C) |
| July | 13.7°C | 16.2°C | 19.5°C | Cool / Refreshing (16°C – 20°C) |
| August | 15.3°C | 16.5°C | 18°C | Cool / Refreshing (16°C – 20°C) |
| SeptemberCurrent | 14.3°C | 15.8°C | 18°C | Very Cold (< 16°C) |
| October | 12.8°C | 14.5°C | 15.9°C | Very Cold (< 16°C) |
| November | 10.8°C | 13°C | 14.4°C | Very Cold (< 16°C) |
| December | 10.4°C | 11.6°C | 12.9°C | Very Cold (< 16°C) |
Swimming FAQs for Porth Nanven
Is the sea warm enough to swim in Porth Nanven today?
Typical sea surface temperature in Porth Nanven this time of year is 15.8°C (60.4°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 Porth Nanven?
The highest water temperatures in Porth Nanven typically occur duringJuly, August, September, October, when monthly averages reach peak seasonal levels.
What is the typical water temperature in Porth Nanven in September?
Historically in September, water temperatures in Porth Nanven average around15.8°C (60.4°F), fluctuating between a recorded minimum of 14.3°C and a maximum of 18°C.