Reykjavík
Iceland
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Reykjavík, Iceland

The city buildings of Reykjavík, the capital city of Iceland, with a view of the sea, and a mountain with a snowy peak in the far distance
The city buildings of Reykjavík, the capital city of Iceland, with a view of the sea, and a mountain with a snowy peak in the far distance
January, the same as December, is a wintry winter month in Reykjavík, Iceland, with average temperature ranging between max 1.9°C (35.4°F) and min -3°C (26.6°F).

Temperature

January is the coldest month, with an average high-temperature of 1.9°C (35.4°F) and an average low-temperature of -3°C (26.6°F).

Rainfall

In Reykjavík, during January, the rain falls for 13.3 days and regularly aggregates up to 75.6mm (3") of precipitation. Throughout the year, there are 147.9 rainfall days, and 798.2mm (31.4") of precipitation is accumulated.

Sea temperature

In January, the average sea temperature in Reykjavík is 5.5°C (41.9°F).
Note: Swimming in 5.5°C (41.9°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.

Daylight

The average length of the day in Reykjavík is 5.6h.

Sunshine

In Reykjavík, the average sunshine is 0.9h.

UV index

Months with the lowest UV index in Reykjavík are January, February, November and December, with an average maximum UV index of 0. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 0 in January transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the coldest month in Reykjavík?

With an average high-temperature of 1.9°C (35.4°F) and an average low-temperature of -3°C (26.6°F), January is the coldest month in Reykjavík.

What is the temperature in January in Reykjavík?

In Reykjavík, in January, the average high-temperature is 1.9°C (35.4°F), and the average low-temperature is -3°C (26.6°F).

How much does it rain in Reykjavík in January?

In Reykjavík, Iceland, during January, the rain falls for 13.3 days and regularly aggregates up to 75.6mm (3") of precipitation.

How cold is the water in January in Reykjavík?

In Reykjavík, in January, the average water temperature is 5.5°C (41.9°F). Swimming in 5.5°C (41.9°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in January in Reykjavík?

The average length of the day in January is 5.6h.

How long on average sun shines in January in Reykjavík?

In January, the average sunshine is 0.9h.

When is the lowest UV index in Reykjavík?

January, February, November and December, with an average maximum UV index of 0, are months with the lowest UV index in Reykjavík.

What is the UV index intensity in January in Reykjavík?

The average daily maximum UV index in January is 0. A UV Index of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to the UV radiation.
Average temperature in January - Reykjavík, Iceland
  • Average high temperature in January: 1.9°C

The warmest month (with the highest average high temperature) is July (13.3°C).
The month with the lowest average high temperature is January (1.9°C).

  • Average low temperature in January: -3°C

The month with the highest average low temperature is July (8.3°C).
The coldest month (with the lowest average low temperature) is January (-3°C).

Average rainfall in January - Reykjavík, Iceland
  • Average rainfall in January: 75.6mm

The wettest month (with the highest rainfall) is October (85.6mm).
The driest month (with the lowest rainfall) is May (43.8mm).

Average rainfall days in January - Reykjavík, Iceland
  • Average rainfall days in January: 13.3 days

The month with the highest number of rainy days is October (14.5 days).
The month with the lowest number of rainy days is May (9.8 days).

Average sea temperature in January - Reykjavík, Iceland
  • Average sea temperature in January: 5.5°C

The best month for swimming (with the highest average sea temperature) is July (11.4°C).
The coldest month (with the lowest average sea temperature) is March (5.1°C).

Average daylight in January / Average sunshine in January - Reykjavík, Iceland
  • Average daylight in January: 5.6h

The month with the longest days is June (Average daylight: 20.9h).
The month with shortest days is December (Average daylight: 4.4h).

  • Average sunshine in January: 0.9h

The month with most sunshine is May (Average sunshine: 6.2h).
The month with least sunshine is December (Average sunshine: 0.4h).

Average UV index in January - Reykjavík, Iceland
  • Average UV index in January: 0

Months with the highest UV index are June and July (UV index 4).
Months with the lowest UV index are January, February, November and December (UV index 0).