August weather forecast
Oslo, Norway

The Vigeland sculpture park in Oslo, Norway, at dusk
The Vigeland sculpture park in Oslo, Norway, at dusk

Weather in August

August, the last month of the summer, in Oslo, is another pleasant month, with average temperature fluctuating between 11.3°C (52.3°F) and 20.1°C (68.2°F).

Temperature

In Oslo, the average high-temperature in August is essentially the same as in July - a still pleasant 20.1°C (68.2°F). In Oslo, the average low-temperature is 11.3°C (52.3°F).

Rainfall

In Oslo, in August, it is raining for 8 days, with typically 89mm (3.5") of accumulated precipitation. Throughout the year, there are 77 rainfall days, and 763mm (30.04") of precipitation is accumulated.

Sea temperature

August is the month with the warmest seawater in Oslo, with an average sea temperature of 17.9°C (64.2°F).
Note: For most, swimming in 17.9°C (64.2°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

Daylight

In Oslo, the average length of the day is 15.5h.

Sunshine

In Oslo, the average sunshine in August is 7h.

UV index

The average daily maximum UV index in Oslo is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 4 in August interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

How many days does it rain in August in Oslo?

In Oslo, Norway, in August, it is raining for 8 days, with typically 89mm (3.5") of accumulated precipitation.

When is the sea warmest in Oslo?

August is the month with the warmest seawater in Oslo, with an average sea temperature of 17.9°C (64.2°F).

How cold is the water in August in Oslo?

In Oslo, Norway, in August, the average water temperature is 17.9°C (64.2°F). 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 average length of the day in August in Oslo?

The average length of the day in August is 15.5h.

How many hours of sunshine does Oslo have in August?

In August, the average sunshine in Oslo, Norway, is 7h.

What is the UV index intensity in August in Oslo?

In Oslo, the average daily maximum UV index in August is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in August
Oslo, Norway

Average temperature in August - Oslo, Norway
  • Average high temperature in August: 20.1°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 August: 11.3°C

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

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Average rainfall in August
Oslo, Norway

Average rainfall in August - Oslo, Norway
  • Average rainfall in August: 89mm

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

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Average rainfall days in August
Oslo, Norway

Average rainfall days in August - Oslo, Norway
  • Average rainfall days in August: 8 days

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

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Average sea temperature in August
Oslo, Norway

Average sea temperature in August - Oslo, Norway
  • Average sea temperature in August: 17.9°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 in August /
Average sunshine in August
Oslo, Norway

Average daylight in August / Average sunshine in August - Oslo, Norway
  • Average daylight in August: 15.5h

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

  • Average sunshine in August: 7h

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

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Average UV index in August
Oslo, Norway

Average UV index in August - Oslo, Norway
  • Average UV index in August: 4

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).

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