St Ives (Porthmeor Beach) Sea Water Temperature
Golden sand beaches and artist light on the tip of Cornwall with the UK's warmest ocean waters. Today's reading, 7-day forecast, and monthly averages below.
St Ives (Porthmeor Beach) water temperature
Invigorating and crisp. Tolerable for active swimming, but chilly for prolonged casual bathing.
7-Day Water Temperature Forecast
St Ives (Porthmeor Beach) Monthly Water Temperature Averages
Historical monthly climatology. The warmest water in St Ives (Porthmeor Beach) occurs inJul, Aug, Sep — peaking at17.1°C (62.8°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 | 10.5°C | 11.2°C | Very Cold (< 16°C) |
| February | 9.2°C | 9.9°C | 10.6°C | Very Cold (< 16°C) |
| March | 9.3°C | 10°C | 10.8°C | Very Cold (< 16°C) |
| April | 10.1°C | 10.9°C | 11.8°C | Very Cold (< 16°C) |
| May | 11.4°C | 12.3°C | 13.3°C | Very Cold (< 16°C) |
| June | 13.5°C | 14.6°C | 15.8°C | Very Cold (< 16°C) |
| July | 15.2°C | 16.4°C | 17.7°C | Cool / Refreshing (16°C – 20°C) |
| August | 15.9°C | 17.1°C | 18.3°C | Cool / Refreshing (16°C – 20°C) |
| SeptemberCurrent | 15.5°C | 16.6°C | 17.8°C | Cool / Refreshing (16°C – 20°C) |
| October | 14.2°C | 15.1°C | 16.1°C | Very Cold (< 16°C) |
| November | 12.5°C | 13.4°C | 14.3°C | Very Cold (< 16°C) |
| December | 11°C | 11.8°C | 12.6°C | Very Cold (< 16°C) |
Swimming FAQs for St Ives (Porthmeor Beach)
Is the sea warm enough to swim in St Ives (Porthmeor Beach) today?
Typical sea surface temperature in St Ives (Porthmeor Beach) this time of year is 16.6°C (61.9°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 St Ives (Porthmeor Beach)?
The highest water temperatures in St Ives (Porthmeor Beach) typically occur duringJul, Aug, Sep, when monthly averages reach peak seasonal levels.
What is the typical water temperature in St Ives (Porthmeor Beach) in September?
Historically in September, water temperatures in St Ives (Porthmeor Beach) average around16.6°C (61.9°F), fluctuating between a recorded minimum of 15.5°C and a maximum of 17.8°C.