Oslo Weather in September

Thinking of visiting Oslo in September? Expect moderate temperatures reaching 17°C (63°F) during the day, dropping to 8°C (46°F) at night, and note that quite a bit of rainfall is likely.

Rainfall in Oslo in September

The climate data from previous years indicates about 16 days of rain, averaging 94 mm (3.7 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Oslo in September

Expect highs of 17°C (63°F) in Oslo in September, with nights dropping to around 8°C (46°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights fall to 8°C (46°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Oslo in September

The month brings about 149 hours of sunlight, offering a comfortable mix of sun and overcast.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. June typically offers the best weather for Oslo.

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Check the conditions for any month of the year.

• January
• February
• March
• April

• May
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• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Norway, check out our Oslo's climate page.

Oslo Temperature in September

Min Temperature 8°C (46°F)  

Max Temperature 17°C (63°F)  

Chance of Rain 54%  

Precipitation 94 mm (3.7 in)  

Rainy days 16 days  

Humidity 76% *  

Sunshine 149 hours *  

Percentage Sunshine *  

* Data from: Drammen, Norway (35 KM, 21 Miles).

What to Wear in Oslo in September

For Oslo in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Oslo in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Norway, check out our Oslo's climate page.

More climate data for Oslo

Temperature Rainfall Sunshine Humidity

See the full Oslo climate overview or explore weather in Norway.