Alftanes
Iceland
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Alftanes, Iceland

In January, the average sea temperature in Alftanes, Iceland, is 5.1°C (41.2°F). Note: Swimming in 5.1°C (41.2°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in January »
In Alftanes, Iceland, in February, the average water temperature is 5°C (41°F). Note: Swimming in 5°C (41°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 4.3°C (39.7°F), March is the month with the coldest seawater in Alftanes, Iceland. Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Weather in March »

In April, the average sea temperature in Alftanes, Iceland, is 5.6°C (42.1°F). Note: Swimming in 5.6°C (42.1°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 Alftanes, Iceland, in May, the average water temperature is 6.9°C (44.4°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 May »

In June, the average sea temperature in Alftanes, Iceland, is 9.3°C (48.7°F). Note: Swimming in 9.3°C (48.7°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 »

July and August, with an average sea temperature of 11.3°C (52.3°F), are months with the warmest seawater in Alftanes, Iceland. Note: Swimming in 11.3°C (52.3°F) is considered dangerous. Weather in July »

July and August, with an average sea temperature of 11.3°C (52.3°F), are months with the warmest seawater in Alftanes, Iceland. Note: Swimming in 11.3°C (52.3°F) is considered dangerous. Weather in August »

In Alftanes, Iceland, the average seawater temperature in September is 9.7°C (49.5°F). Note: Swimming in 9.7°C (49.5°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 Alftanes, Iceland, the average seawater temperature in October is 8.2°C (46.8°F). Note: Swimming in 8.2°C (46.8°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 October »

In Alftanes, Iceland, in November, the average water temperature is 6.9°C (44.4°F). Note: Swimming in 6.9°C (44.4°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 Alftanes, Iceland, the average seawater temperature in December is 6.4°C (43.5°F). Note: Swimming in 6.4°C (43.5°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 »

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

The month with the coldest seawater is March, with an average sea temperature of 4.3°C (39.7°F).

When are the longest days in Alftanes?

With an average of 20.8h of daylight, June has the longest days of the year.

What months are the sea warmest in Alftanes?

July and August, with an average sea temperature of 11.3°C (52.3°F), are months with the warmest seawater.

What is the month with the shortest days in Alftanes?

The month with the shortest days is December, with an average of 4.4h of daylight.
Average sea temperature - Alftanes, Iceland

Best months for swimming (with the highest average sea temperature) are July and August (11.3°C).
The coldest month (with the lowest average sea temperature) is March (4.3°C).

Average daylight - Alftanes, Iceland

The month with the longest days is June (Average daylight: 20.8h).
The month with shortest days is December (Average daylight: 4.4h).