Penarth
United Kingdom
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Penarth, United Kingdom

In January, the average sea temperature in Penarth, United Kingdom, is 9.3°C (48.7°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 Penarth, United Kingdom, the average seawater temperature in February is 8.9°C (48°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 February »

The month with the coldest seawater in Penarth, United Kingdom, is March, with an average sea temperature of 8.7°C (47.7°F). Note: Swimming in 8.7°C (47.7°F) is considered dangerous. Weather in March »

In April, the average sea temperature in Penarth, United Kingdom, is 9.9°C (49.8°F). Note: Swimming in 9.9°C (49.8°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 April »

In May, the average sea temperature in Penarth, United Kingdom, is 11.3°C (52.3°F). Note: Swimming in 11.3°C (52.3°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 Penarth, United Kingdom, in June, the average water temperature is 13.5°C (56.3°F). Note: Swimming in 13.5°C (56.3°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 June »

In Penarth, United Kingdom, in July, the average water temperature is 15.7°C (60.3°F). Note: For most, swimming in 15.7°C (60.3°F) is not an enjoyable activity. Weather in July »

August and September, with an average sea temperature of 16.6°C (61.9°F), are months with the warmest seawater in Penarth, United Kingdom. Note: For swimming, a surface water temperature of 16.6°C (61.9°F) is not enjoyable for the majority. Weather in August »

August and September, with an average sea temperature of 16.6°C (61.9°F), are months with the warmest seawater in Penarth, United Kingdom. Note: For swimming, a surface water temperature of 16.6°C (61.9°F) is not enjoyable for the majority. Weather in September »

In Penarth, United Kingdom, in October, the average water temperature is 15.4°C (59.7°F). Note: For most, swimming in 15.4°C (59.7°F) is not an enjoyable activity. Weather in October »

In Penarth, United Kingdom, the average seawater temperature in November is 13.7°C (56.7°F). Note: Swimming in 13.7°C (56.7°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 Penarth, United Kingdom, in December, the average water temperature is 11.5°C (52.7°F). Note: Swimming in 11.5°C (52.7°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in December »

When is the sea coldest in Penarth?

With an average sea temperature of 8.7°C (47.7°F), March is the month with the coldest seawater in Penarth.

When are the longest days in Penarth?

With an average of 16.5h of daylight, June has the longest days of the year.

When is the sea warmest in Penarth?

August and September, with an average sea temperature of 16.6°C (61.9°F), are months with the warmest seawater.

What is the month with the shortest days in Penarth?

The month with the shortest days in Penarth, United Kingdom, is December, with an average of 7.9h of daylight.
Average sea temperature - Penarth, United Kingdom

Best months for swimming (with the highest average sea temperature) are August and September (16.6°C).
The coldest month (with the lowest average sea temperature) is March (8.7°C).

Average daylight - Penarth, United Kingdom

The month with the longest days is June (Average daylight: 16.5h).
The month with shortest days is December (Average daylight: 7.9h).