Oslo, Norway - Detailed climate information and monthly weather forecast

The scenic view of the Vigeland sculpture park in Oslo, Norway, at dusk

January, like December, is another subzero cold winter month in Oslo, Norway, with temperature in the range of an average low of -6.8°C (19.8°F) and an average high of -1.8°C (28.8°F). The coldest month is January, with an average high-temperature of -1.8°C (28.8°F) and an average low-temperature of -6.8°C (19.8°F). Weather in January »

February, the last month of the winter, in Oslo, is another freezing cold month, with average temperature ranging between max. -0.9°C (30.4°F) and min. -6.8°C (19.8°F). The average high-temperature, in Oslo, is -0.9°C (30.4°F), while the average low-temperature is -6.8°C (19.8°F). Weather in February »

The first month of the spring, March, is a cold month in Oslo, Norway, with temperature in the range of an average low of -3.3°C (26.1°F) and an average high of 3.5°C (38.3°F). In Oslo, in March, the average high-temperature is 3.5°C (38.3°F), and the average low-temperature is -3.3°C (26.1°F). Weather in March »

April is a chilly spring month in Oslo, Norway, with average temperature ranging between min. 0.8°C (33.4°F) and max. 9.1°C (48.4°F). In April, the average high-temperature is 9.1°C (48.4°F), and the average low-temperature is 0.8°C (33.4°F). Weather in April »

May, the last month of the spring, in Oslo, is a mild month, with average temperature fluctuating between 6.5°C (43.7°F) and 15.8°C (60.4°F). The average high-temperature, in May, is 15.8°C (60.4°F), while the average low-temperature is 6.5°C (43.7°F). Weather in May »

The first month of the summer, June, is a pleasant month in Oslo, Norway, with temperature in the range of an average low of 10.6°C (51.1°F) and an average high of 20.4°C (68.7°F). In June, the average high-temperature is 20.4°C (68.7°F), and the average low-temperature is 10.6°C (51.1°F). Weather in June »

July, like June, is another pleasant summer month in Oslo, Norway, with temperature in the range of an average low of 12.2°C (54°F) and an average high of 21.5°C (70.7°F). July is the warmest month, with an average high-temperature of 21.5°C (70.7°F) and an average low-temperature of 12.2°C (54°F). Weather in July »

August, the last month of the summer, in Oslo, is also a pleasant month, with temperature in the range of an average high of 20.1°C (68.2°F) and an average low of 11.3°C (52.3°F). In August, the average high-temperature is 20.1°C (68.2°F), and the average low-temperature is 11.3°C (52.3°F). Weather in August »

The first month of the autumn, September, is still a mild month in Oslo, Norway, with average temperature ranging between max. 15.1°C (59.2°F) and min. 7.5°C (45.5°F). The average high-temperature, in Oslo, is 15.1°C (59.2°F), while the average low-temperature is 7.5°C (45.5°F). Weather in September »

October, like September, is another chilly autumn month in Oslo, Norway, with average temperature ranging between min. 3.8°C (38.8°F) and max. 9.3°C (48.7°F). The average high-temperature, in October, is 9.3°C (48.7°F), while the average low-temperature is 3.8°C (38.8°F). Weather in October »

The last month of the autumn, November, is also a cold month in Oslo, Norway, with average temperature fluctuating between -1.5°C (29.3°F) and 3.2°C (37.8°F). In Oslo, in November, the average high-temperature is 3.2°C (37.8°F), and the average low-temperature is -1.5°C (29.3°F). Weather in November »

The first month of the winter, December, is still a freezing cold month in Oslo, Norway, with average temperature varying between -5.6°C (21.9°F) and -0.5°C (31.1°F). The average high-temperature, in December, is -0.5°C (31.1°F), while the average low-temperature is -5.6°C (21.9°F). Weather in December »

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What is the coldest month in Oslo?

With an average high-temperature of -1.8°C (28.8°F) and an average low-temperature of -6.8°C (19.8°F), January is the coldest month in Oslo, Norway.

How many days does it rain in Oslo?

Throughout the year, in Oslo, there are 77 rainfall days, and 763mm (30") of precipitation is accumulated.

What are the months with the lowest UV index in Oslo?

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

What is the driest month in Oslo?

February is the month with the least rainfall in Oslo. Rain falls for 4 days and accumulates 36mm (1.4") of precipitation.

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

The month with the coldest seawater is March, with an average sea temperature of 3°C (37.4°F). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

When are the longest days in Oslo?

The month with the longest days in Oslo is June, with an average of 18.7h of daylight.

What month has the most sunshine in Oslo?

The month with the most sunshine in Oslo, Norway, is June, with an average of 8.3h of sunshine.

What are the months with the highest UV index in Oslo?

Months with the highest UV index in Oslo, Norway, are June and July, with an average UV index of 5.

What is the warmest month in Oslo?

July is the warmest month in Oslo, with an average high-temperature of 21.5°C (70.7°F) and an average low-temperature of 12.2°C (54°F).

When is the sea warmest in Oslo?

With an average sea temperature of 17.9°C (64.2°F), August is the month with the warmest seawater in Oslo, Norway. For swimming, a surface water temperature of 17.9°C (64.2°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

What is the wettest month in Oslo?

The month with the most rainfall is September when the rain falls for 7 days and typically aggregates up to 90mm (3.5") of precipitation.

What is the month with the shortest days in Oslo?

The month with the shortest days in Oslo, Norway, is December, with an average of 6.1h of daylight.

What is the month with the least sunshine in Oslo?

December has the least sunshine of the year in Oslo, Norway, with an average of 1.1h of sunshine.

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Long-term

Climate J F M A M J J A S O N D Year

Average high temperature in January:
-1.8°C
Average high temperature in February:
-0.9°C
Average high temperature in March:
3.5°C
Average high temperature in April:
9.1°C
Average high temperature in May:
15.8°C
Average high temperature in June:
20.4°C

Average high temperature in July:
21.5°C
Average high temperature in August:
20.1°C
Average high temperature in September:
15.1°C
Average high temperature in October:
9.3°C
Average high temperature in November:
3.2°C
Average high temperature in December:
-0.5°C

The warmest month (with the highest average high temperature) is July (21.5°C).
The month with the lowest average high temperature is January (-1.8°C).

Average low temperature in January:
-6.8°C
Average low temperature in February:
-6.8°C
Average low temperature in March:
-3.3°C
Average low temperature in April:
0.8°C
Average low temperature in May:
6.5°C
Average low temperature in June:
10.6°C

Average low temperature in July:
12.2°C
Average low temperature in August:
11.3°C
Average low temperature in September:
7.5°C
Average low temperature in October:
3.8°C
Average low temperature in November:
-1.5°C
Average low temperature in December:
-5.6°C

The month with the highest average low temperature is July (12.2°C).
Coldest months (with the lowest average low temperature) are January and February (-6.8°C).

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The wettest month (with the highest rainfall) is September (90mm).
The driest month (with the lowest rainfall) is February (36mm).

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Average rainfall days in January:
6 days
Average rainfall days in February:
4 days
Average rainfall days in March:
6 days
Average rainfall days in April:
5 days
Average rainfall days in May:
5 days
Average rainfall days in June:
7 days

Average rainfall days in July:
7 days
Average rainfall days in August:
8 days
Average rainfall days in September:
7 days
Average rainfall days in October:
8 days
Average rainfall days in November:
8 days
Average rainfall days in December:
6 days

Months with the highest number of rainy days are August, October and November (8 days).
The month with the lowest number of rainy days is February (4 days).

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Average sea temperature in January:
4.2°C
Average sea temperature in February:
3.6°C
Average sea temperature in March:
3°C
Average sea temperature in April:
6.3°C
Average sea temperature in May:
10.7°C
Average sea temperature in June:
14.8°C

Average sea temperature in July:
17.3°C
Average sea temperature in August:
17.9°C
Average sea temperature in September:
15.4°C
Average sea temperature in October:
11.8°C
Average sea temperature in November:
8.9°C
Average sea temperature in December:
6.3°C

The best month for swimming (with the highest average sea temperature) is August (17.9°C).
The coldest month (with the lowest average sea temperature) is March (3°C).

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Average daylight / Average sunshine - Oslo, Norway

The month with the longest days is June (Average daylight: 18.7h).
The month with shortest days is December (Average daylight: 6.1h).

The month with most sunshine is June (Average sunshine: 8.3h).
The month with least sunshine is December (Average sunshine: 1.1h).

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Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, November and December (UV index 0).

Climate J F M A M J J A S O N D Year

°Celsius °Fahrenheit

Monthly weather forecast and climate
Oslo, Norway NO

Contents

Weather in January

Weather in February

Weather in March

Weather in April

Weather in May

Weather in June

Weather in July

Weather in August

Weather in September

Weather in October

Weather in November

Weather in December