Monthly weather forecast and climate
Borgarnes, Iceland

What is the coldest month in Borgarnes?

With an average high-temperature of 2°C (35.6°F) and an average low-temperature of -4°C (24.8°F), January is the coldest month.

How much does it rain in Borgarnes?

During the entire year, Borgarnes aggregates up to 886mm (34.9") of precipitation.

What month is the sea coldest in Borgarnes?

Month with the coldest seawater is March, with an average sea temperature of 4.1°C (39.4°F). For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

What is the driest month in Borgarnes?

The month with the least rainfall is May when 30mm (1.2") of precipitation is typically aggregated.

What is the warmest month in Borgarnes?

July is the warmest month in Borgarnes, Iceland, with an average high-temperature of 16°C (60.8°F) and an average low-temperature of 8°C (46.4°F).

What is the month with the warmest sea water in Borgarnes?

With an average sea temperature of 10.8°C (51.4°F), August is the month with the warmest seawater in Borgarnes. 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. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

What is the wettest month in Borgarnes?

The wettest months in Borgarnes are September and November, with an average 109mm (4.3") of rainfall.
Average rainfall - Borgarnes, Iceland

Wettest months (with the highest rainfall) are September and November (109mm).
The driest month (with the lowest rainfall) is May (30mm).

Average sea temperature - Borgarnes, Iceland

The best month for swimming (with the highest average sea temperature) is August (10.8°C).
The coldest month (with the lowest average sea temperature) is March (4.1°C).

Average daylight - Borgarnes, Iceland

The month with the longest days is June (Average daylight: 21.2h).
The month with shortest days is December (Average daylight: 4.1h).