Porthleven
United Kingdom
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Porthleven, United Kingdom

In Porthleven, United Kingdom, in January, the average water temperature is 10.4°C (50.7°F). Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Weather in January »
In February, the average sea temperature in Porthleven, United Kingdom, is 10°C (50°F). Note: Swimming in 10°C (50°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in February »

The month with the coldest seawater in Porthleven, United Kingdom, is March, with an average sea temperature of 9.7°C (49.5°F). Note: Swimming in 9.7°C (49.5°F) is considered life-threatening. Weather in March »

In Porthleven, United Kingdom, in April, the average water temperature is 10.6°C (51.1°F). Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Weather in April »

In May, the average sea temperature in Porthleven, United Kingdom, is 12°C (53.6°F). Note: Swimming in 12°C (53.6°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique. Weather in May »

In Porthleven, United Kingdom, the average seawater temperature in June is 14.1°C (57.4°F). Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Weather in June »

In Porthleven, United Kingdom, in July, the average water temperature is 16.4°C (61.5°F). Note: For most, swimming in 16.4°C (61.5°F) is not an enjoyable activity. Weather in July »

With an average sea temperature of 17.1°C (62.8°F), August is the month with the warmest seawater in Porthleven, United Kingdom. Note: Swimming in 17.1°C (62.8°F) is not enjoyable for the majority. Weather in August »

In Porthleven, United Kingdom, the average seawater temperature in September is 16.3°C (61.3°F). Note: Swimming in 16.3°C (61.3°F) is not enjoyable for the majority. Weather in September »

In Porthleven, United Kingdom, the average seawater temperature in October is 14.8°C (58.6°F). Note: Swimming in 14.8°C (58.6°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in October »

In Porthleven, United Kingdom, in November, the average water temperature is 13.3°C (55.9°F). Note: Swimming in 13.3°C (55.9°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in November »

In December, the average sea temperature in Porthleven, United Kingdom, is 11.8°C (53.2°F). Note: Swimming in 11.8°C (53.2°F) is considered life-threatening. Weather in December »

What month is the sea coldest in Porthleven?

With an average sea temperature of 9.7°C (49.5°F), March is the month with the coldest seawater in Porthleven.

When are the longest days in Porthleven?

The month with the longest days in Porthleven is June, with an average of 16.3h of daylight.

When is the sea warmest in Porthleven?

With an average sea temperature of 17.1°C (62.8°F), August is the month with the warmest seawater in Porthleven, United Kingdom.

What is the month with the shortest days in Porthleven?

The month with the shortest days in Porthleven, United Kingdom, is December, with an average of 8.2h of daylight.
Average sea temperature - Porthleven, United Kingdom

The best month for swimming (with the highest average sea temperature) is August (17.1°C).
The coldest month (with the lowest average sea temperature) is March (9.7°C).

Average daylight - Porthleven, United Kingdom

The month with the longest days is June (Average daylight: 16.3h).
The month with shortest days is December (Average daylight: 8.2h).