Portrane
Ireland
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Portrane, Ireland

In Portrane, Ireland, the average seawater temperature in January is 9.6°C (49.3°F). Note: Swimming in 9.6°C (49.3°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 January »

In Portrane, Ireland, in February, the average water temperature is 8.8°C (47.8°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 Portrane, Ireland, is March, with an average sea temperature of 8.4°C (47.1°F). Note: Swimming in 8.4°C (47.1°F) is considered life-threatening. Weather in March »

In Portrane, Ireland, the average seawater temperature in April is 9.2°C (48.6°F). Note: Swimming in 9.2°C (48.6°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 Portrane, Ireland, the average seawater temperature in May 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 May »

In Portrane, Ireland, in June, the average water temperature is 12.3°C (54.1°F). Note: Swimming in 12.3°C (54.1°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 July, the average sea temperature in Portrane, Ireland, is 14.1°C (57.4°F). Note: Swimming in 14.1°C (57.4°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in July »

August is the month with the warmest seawater in Portrane, Ireland, with an average sea temperature of 14.9°C (58.8°F). Note: Swimming in 14.9°C (58.8°F) is considered dangerous. Weather in August »

In September, the average sea temperature in Portrane, Ireland, 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 September »

In Portrane, Ireland, in October, the average water temperature 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 October »

In Portrane, Ireland, the average seawater temperature in November is 13.1°C (55.6°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 November »

In Portrane, Ireland, in December, the average water temperature 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 December »

When is the sea coldest in Portrane?

With an average sea temperature of 8.4°C (47.1°F), March is the month with the coldest seawater.

When are the longest days in Portrane?

June has the longest days of the year in Portrane, with an average of 16.9h of daylight.

What month is the sea warmest in Portrane?

With an average sea temperature of 14.9°C (58.8°F), August is the month with the warmest seawater in Portrane.

What is the month with the shortest days in Portrane?

December has the shortest days of the year, with an average of 7.6h of daylight.
Average sea temperature - Portrane, Ireland

The best month for swimming (with the highest average sea temperature) is August (14.9°C).
The coldest month (with the lowest average sea temperature) is March (8.4°C).

Average daylight - Portrane, Ireland

The month with the longest days is June (Average daylight: 16.9h).
The month with shortest days is December (Average daylight: 7.6h).