Oslo weather in September
Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average
Oslo September weather at a glance
In September, Oslo averages 13.3°C, with typical highs of 16.9°C and lows of 10.3°C. The historical average is 14 wet days and 85% humidity.
Oslo September temperature & humidity
Oslo September rain & wet days
Pack a light rain jacket, waterproof pouch and quick-dry shoes. Keep an indoor stop available between outdoor activities.
What to wear in Oslo in September
Wear long sleeves with a light jacket or cardigan that is easy to remove during the day. Rain is frequent at roughly 14 days in the month; pack a rain jacket and water-resistant shoes.
- DaytimeLong sleeves and a light jacket · average high 16.9°C
- Morning & eveningLong sleeves with a jacket or cardigan · average low 10.3°C
- FootwearComfortable walking shoes; quick-dry footwear for rainy days.
Packing essentials
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Oslo September sunrise & sunset times
2026 September · Local time (Europe/Oslo)
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 2026-09-01 | 06:12 | 20:21 | 14h 9m |
| 2026-09-15 | 06:45 | 19:38 | 12h 54m |
| 2026-09-30 | 07:20 | 18:53 | 11h 33m |
For sunset photos, arrive before the listed sunset time. Clouds, mountains and buildings can change when the sun becomes visible or disappears.
Calculated for the city coordinates with daylight saving applied. SunCalc · tz-lookup
Oslo travel updates
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Today’s weather and forecast
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Best months to visit Oslo
Bar height shows our simple weather-comfort score, not a safety rating; colour shows temperature.
September weather by year
Daily weather in 2025
Daily high and low temperatures; blue labels show precipitation
Frequently asked questions
What is Oslo weather like in September?
In September, Oslo averages 13.3°C, with typical highs of 16.9°C and lows of 10.3°C. The historical average is 14 wet days and 85% humidity. Our weather-comfort rating for this month is fair.
Does it rain a lot in Oslo in September?
There are about 14 wet days in September. Pack a rain jacket and water-resistant shoes.
What should I wear in Oslo in September?
Wear long sleeves with a light jacket or cardigan that is easy to remove during the day. Rain is frequent at roughly 14 days in the month; pack a rain jacket and water-resistant shoes.
What are the best months to visit Oslo?
Recent weather data rates May, August among the more comfortable months.
Where can I check Oslo weather in September in real time?
Check local webcams for the view right now and a local weather service for today’s forecast. Monthly temperatures here are historical averages.
What time are sunrise and sunset in Oslo in September?
On 2026-09-15, calculated sunrise is 06:45 and sunset is 19:38 in local time (Europe/Oslo). Times vary by date and terrain.
Oslo weather by month
More Europe destinations in September
Open-Meteo (CC BY 4.0) · 2024–2025 historical data, aggregated and rounded by this site. Not a forecast or long-term climate normal. Calculation method and limitations