The average temperature for the week of 30 June 2025 - 6 July 2025 was 22 °C (72 °F) during the day and 12 °C (54 °F) during the night. Both the daily and night temperatures in Oslo are roughly same as the long-term average, which is around 21 °C (70 °F) and 11 °C (52 °F) respectively. The end of the week saw Saturday being the coldest day of the week. The average temperatures observed during different times of day (based on local time) were as below: 7am 14 °C (57 °F), 10am 17 °C (63 °F), 1pm 20 °C (68 °F), 4pm 21 °C (70 °F), 7pm 19 °C (66 °F), 10pm 16 °C (61 °F).

During this week: 2 days without rain, 2 days with light rain, 1 day with moderate rain and 2 days with heavy rain were observed. The total precipitation for the week in Oslo was 113 mm (4.45 in), which is above the area's average of 18 mm (0.71 in). From dawn to dusk, there was an average of 76 % cloud coverage during the day.

Average speed of wind was 1.8 m/s. The atmosferic pressure ranged from 996 hpa to 1019 hpa. On average, the air humidity in Oslo was 73 %.

On average, there were 1.5 hours clear skies, 6 hours partially overcast skies, 9 hours overcast skies and 3.5 hours rainy weather during the daytime (from dawn to dusk). On average, the time of sunrise was 04:02, and the time of sunset was 22:39.

Weather overview

Oslo (Norway) is a place with a mild continental climate. Temperatures during the day are in the range from 0 °C (31 °F) in January to 22 °C (71 °F) in July. The least rainy month in Oslo is March with its 9 days of rain, the rainiest month is November, when it rains 13 days. Temperatures during the night go from -5 °C (23 °F) in January to 13 °C (55 °F) in July.

January weather

The day temperature is on its minimum in Oslo, and the minimum of the night temperature is observable as well, its value is -5 °C (23 °F). The wind speed is on its maximum in this month. The maximum of the humidity can be noticed, with its value being 83 %.

February weather

The day temperature starts to rise, the value of this measure is 1 °C (33 °F) in Oslo. The number of rainy days starts to descent, with its value of 9 days, while the rainfall amount reaches its minimum in February. The number of sun hours (without clouds) starts to rise, with its value of 2 hours.

March weather

The rise of the day temperature can be observed, with its value being 4 °C (39 °F) in Oslo, while the night temperature starts to rise in March. The rainfall amount starts to rise, its value is 53 mm (2.09 in), while the minimum of the number of rainy days is observable, the value of this measure is 9 days. The number of sun hours (without clouds) rises similarly to the previous month, with its value of 4 hours.

April weather

The rise of the day temperature can be observed, the value of this measure is 10 °C (50 °F) in Oslo, and the rise of the night temperature can be observed as well, with its value being 2 °C (35 °F). The beginning of the descent of the rainfall amount could be noticed, with its value of 46 mm (1.80 in). The number of sun hours (without clouds) rises similarly to the previous month, the value of this measure is 6 hours.

May weather

The day temperature rises similarly to the previous month, its value is 16 °C (61 °F) in Oslo, and the night temperature continues to rise too, its value is 6 °C (44 °F). The number of rainy days starts to rise, the value of this measure is 10 days, and the rainfall amount starts to rise too, the value of this measure is 53 mm (2.09 in). The humidity reaches its minimum, its value is 65 %.

June weather

The day temperature continues to rise, with its value of 19 °C (67 °F) in Oslo. The tourist season slowly starts in June. The rise of the number of rainy days can be observed, the value of this measure is 12 days, and the rainfall amount continues to rise as well, the value of this measure is 72 mm (2.85 in). The maximum of the number of sun hours (without clouds) can be noticed in this month.

July weather

There is pending tourist season in Oslo. The maximum of the day temperature can be noticed, with its value of 22 °C (71 °F), and the night temperature is on its maximum as well, with its value being 13 °C (55 °F). The rainfall amount rises similarly to the previous month. The number of sun hours (without clouds) starts to descent in this month.

August weather

The ongoing tourist season is noticeable in Oslo. The beginning of the descent of the day temperature could be noticed, the value of this measure is 20 °C (69 °F). The number of rainy days rise's start could be observed, with its value of 13 days, while the rainfall amount reaches its maximum in August. The minimum of the wind speed is observable, with its value being 3.

September weather

The descent of the day temperature can be observed, its value is 16 °C (60 °F) in Oslo, and the night temperature descents similarly to the previous month too, its value is 8 °C (47 °F). The beginning of the descent of the number of rainy days could be noticed, the value of this measure is 11 days, and the rainfall amount descent's start could be observed as well. The number of sun hours (without clouds) descents similarly to the previous month, with its value being 5 hours.

October weather

The day temperature continues to descent in Oslo, and the night temperature continues to descent as well, with its value being 4 °C (39 °F). The number of rainy days rise's start could be observed, with its value being 12 days, and the beginning of the rise of the rainfall amount could be noticed too, with its value being 91 mm (3.58 in). The number of sun hours (without clouds) descents similarly to the previous month, with its value of 3 hours.

November weather

The day temperature continues to descent, the value of this measure is 4 °C (38 °F) in Oslo, and the night temperature descents similarly to the previous month as well, with its value being 0 °C (31 °F). The number of rainy days reaches its maximum, its value is 13 days, while the rainfall amount descent's start could be observed, the value of this measure is 81 mm (3.17 in). The number of sun hours (without clouds) continues to descent, with its value of 2 hours.

December weather

The day temperature continues to descent, with its value being 0 °C (32 °F) in Oslo, and the night temperature descents similarly to the previous month as well, with its value being -4 °C (24 °F). The beginning of the descent of the number of rainy days could be noticed, its value is 11 days, while the rainfall amount continues to descent, the value of this measure is 57 mm (2.23 in). The minimum of the number of sun hours (without clouds) can be noticed, with its value being 1 hour.

How many rainy days can I expect in May in Oslo?

In May in Oslo, we can expect 10 days to be rainy, that is, days when precipitation exceeds 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.3 days of the week, or in general - 33 % days.

Are there good conditions to visit in June in Oslo?

June is a good month to visit Oslo. There are some people, who may feel a slight chill at 19 °C (67 °F), but others will feel perfectly fine. The temperature of 10 °C (51 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.

Is there a wet season in July in Oslo?

No, there is no wet season in Oslo in July - you can expect 12 days of rain during the month.

What temperature can I expect during the day in Oslo in August?

In Oslo in August, the average daily temperatures will be 20 °C (69 °F). A comfortable temperature for most people, where it is neither too cold nor too hot, and a large number of activities can be carried out comfortably, including sunbathing by the water. Lighter clothing will be suitable - shorts, skirts, t-shirts, jackets; a light sweater and long trousers may also be useful.

What is the sea temperature in September in Oslo?

The temperature of the sea in Oslo in September is 15 °C (59 °F). This is a sea temperature for resilient people only, most people won't enjoy swimming in such cold water or will have to use a wetsuit for water activities.