Larne
United Kingdom
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Larne, United Kingdom

In Larne, United Kingdom, the average seawater temperature in January is 8.8°C (47.8°F). Note: Swimming in 8.8°C (47.8°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 January »
In Larne, United Kingdom, the average seawater temperature in February is 8.2°C (46.8°F). Note: Swimming in 8.2°C (46.8°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in February »

With an average sea temperature of 8°C (46.4°F), March is the month with the coldest seawater in Larne, United Kingdom. Note: Swimming in 8°C (46.4°F) is considered life-threatening. Weather in March »

In April, the average sea temperature in Larne, United Kingdom, is 8.8°C (47.8°F). Note: Swimming in 8.8°C (47.8°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in April »

In May, the average sea temperature in Larne, United Kingdom, is 10°C (50°F). Note: Swimming in 10°C (50°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 June, the average sea temperature in Larne, United Kingdom, is 11.8°C (53.2°F). Note: Swimming in 11.8°C (53.2°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 Larne, United Kingdom, in July, the average water temperature is 13.6°C (56.5°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 July »

In August, the average sea temperature in Larne, United Kingdom, is 14.2°C (57.6°F). Note: Swimming in 14.2°C (57.6°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 August »

September is the month with the warmest seawater in Larne, United Kingdom, with an average sea temperature of 14.3°C (57.7°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 September »

In Larne, United Kingdom, in October, the average water temperature is 13.4°C (56.1°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 October »

In Larne, United Kingdom, the average seawater temperature in November is 12.3°C (54.1°F). Note: Swimming in 12.3°C (54.1°F) is considered life-threatening. Weather in November »

In December, the average sea temperature in Larne, United Kingdom, is 10.5°C (50.9°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 December »

What is the month with the coldest sea water in Larne?

The month with the coldest seawater in Larne is March, with an average sea temperature of 8°C (46.4°F).

When are the longest days in Larne?

With an average of 17.2h of daylight, June has the longest days of the year.

When is the sea warmest in Larne?

With an average sea temperature of 14.3°C (57.7°F), September is the month with the warmest seawater in Larne, United Kingdom.

What is the month with the shortest days in Larne?

With an average of 7.3h of daylight, December has the shortest days of the year.
Average sea temperature - Larne, United Kingdom

The best month for swimming (with the highest average sea temperature) is September (14.3°C).
The coldest month (with the lowest average sea temperature) is March (8°C).

Average daylight - Larne, United Kingdom

The month with the longest days is June (Average daylight: 17.2h).
The month with shortest days is December (Average daylight: 7.3h).