August weather forecast and climate
Oslo, Norway

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

Temperature

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

Rainfall

In August, in Oslo, Norway, the rain falls for 8 days. Throughout August, 89mm (3.5") of precipitation is accumulated. In Oslo, Norway, during the entire year, the rain falls for 77 days and collects up to 763mm (30.04") of precipitation.

Sea temperature

August is the month with the warmest seawater, with an average sea temperature of 17.9°C (64.2°F).
Note: Swimming in 17.9°C (64.2°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

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

Sunshine

The average sunshine in August is 7h.

UV index

In August, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against sunburn is recommended. 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.

What is the temperature in August in Oslo?

In August, in Oslo, Norway, the average high-temperature is 20.1°C (68.2°F), and the average low-temperature is 11.3°C (52.3°F).

How many days does it rain in August in Oslo?

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

When is the sea warmest in Oslo?

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

How cold is the water in August in Oslo?

In August, the average sea temperature is 17.9°C (64.2°F). Swimming in 17.9°C (64.2°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

How many hours of daylight does Oslo have in August?

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

How long on average sun shines in August in Oslo?

In August, the average sunshine is 7h.

What is the UV index intensity in August in Oslo?

In August, the average daily maximum UV index in Oslo, Norway, is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to the UV radiation.
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).

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).

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).

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).

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).

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).