Weather in Oslo in September 2024
Average weather
Average temperature in Oslo in September
The temperature in September is +61°F on average, with a range between a maximum of +72°F during the day and a minimum of +41°F at night.
The average maximum temperature goes down 47% by the end of the month, compared with the beginning of the month, from +70°F to +55°F.
Is Oslo warm or cold in September?
Oslo is typically mild in September.
Maximum temperatures go down compared to the previous month from +70°F to +61°F. The minimum temperature also goes down from +54°F to +48°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how September is compared to other months in Oslo:
Climate in Oslo in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +70°F | +61°F | +50°F | ||||
| Min. temperature | ||||||
| +41°F | +30°F | +19°F | ||||
| Max. temperature | ||||||
| +91°F | +79°F | +66°F | ||||
| Rainfall | ||||||
| 105 mm | 93 mm | 116 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 71% | 74% | 79% | ||||
| Air pressure | ||||||
| 1009 HPa | 1010 HPa | 1009 HPa | ||||
| Sunny days | ||||||
| 3 | 3 | 3 | ||||
| Cloudy days | ||||||
| 18 | 19 | 18 | ||||
| Rainy days | ||||||
| 10 | 8 | 9 | ||||
| Snowy days | ||||||
| 0 | 0 | 1 | ||||
September weather is still as good as in August. It’s getting colder in September. From +70°F in the day, the average maximum temperature lowers to +61°F. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 105 mm to 93 mm. Humidity rises from 71% to 74%. The average wind speed doesn’t change much during September, staying around 2 m/s. The amount of sunny days stay about the same, averaging 3 sunny days during the month.
Next month (October) brings a further decline in the weather.
Wind
The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Oslo is gradually increasing during September, going from 1 m/s to 2 m/s over the course of the month.
Rain
How was the weather last September in Oslo?
Climate Change Over the Years
The climate in Oslo in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1984 (+58°F) and the highest in 2016 (+70°F). The driest year was 1986 with only 19 mm of rainfall, and the wettest year was 2003 with 228 mm.
FAQ
Is September a good time to visit Oslo?
Can you sunbathe in Oslo in September?
Is Oslo rainy in September?
Is it sunny in Oslo in September?
Other cities in Norway
Monthly weather in Oslo
Source of the data
For this page, we’ve looked at the typical weather in Oslo, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.