Climate in Oslo — Annual Weather Overview
Oslo has a continental climate — hot summers, cold winters and moderate rainfall. The hottest month is June (average high 22.1°C) and the coolest is December (-1.0°C). The seasons are strongly defined — a 23.1°C swing between June highs and December lows. Annual rainfall totals around 921mm. July is the wettest month at 131.1mm, while March averages just 47.4mm. Average daily sunshine is 7.6 hours.
**Spring (March, April, May):** average highs 10.1°C, 159mm rain. **Summer (June, July, August):** average highs 20.9°C, 294mm rain. **Autumn (September, October, November):** average highs 10.3°C, 262mm rain. **Winter (December, January, February):** average highs 0.7°C, 206mm rain.
Oslo — Monthly Temperatures
Oslo — Monthly Rainfall
✅ Best months to visit
January to November
ℹ️ No months to avoid
Weather in Oslo stays reasonable all year.
Oslo weather by month
| Month | High | Low | Rain | Sun/day | Rainy days | Rating |
|---|---|---|---|---|---|---|
| January | 0.9°C | -3.6°C | 66.7mm | 3.0h | 9 | 8/10 |
| February | 2.3°C | -3.7°C | 55.3mm | 5.6h | 10 | 8/10 |
| March | 5.2°C | -2.9°C | 47.4mm | 8.2h | 6 | 10/10 |
| April | 10.1°C | 0.9°C | 47.4mm | 10.4h | 6 | 10/10 |
| May | 15.0°C | 5.5°C | 64.0mm | 12.0h | 11 | 10/10 |
| June | 22.1°C | 12.5°C | 79.8mm | 13.4h | 9 | 10/10 |
| July | 20.3°C | 12.8°C | 131.1mm | 12.2h | 14 | 9/10 |
| August | 20.3°C | 12.5°C | 83.3mm | 10.7h | 10 | 10/10 |
| September | 16.4°C | 9.6°C | 80.0mm | 7.7h | 9 | 10/10 |
| October | 9.9°C | 5.1°C | 104.5mm | 4.8h | 13 | 9/10 |
| November | 4.5°C | 0.8°C | 77.2mm | 2.1h | 13 | 8/10 |
| December | -1.0°C | -5.1°C | 83.9mm | 1.6h | 14 | 6/10 |
For the full verdict on when to go, see the best time to visit Oslo. Seasonal breakdowns: spring, summer, autumn and winter.
Sorted on weather — now sort the packing
Our sister site has a ready-made checklist for this exact trip.
Oslo packing list →More about Norway — currency, language and key facts at 247CountryInfo →
Frequently Asked Questions
What type of climate does Oslo have?
Oslo has a continental climate — hot summers, cold winters and moderate rainfall. Average highs range from -1.0°C in December to 22.1°C in June.
What is the hottest month in Oslo?
June is the hottest month in Oslo, with average highs of 22.1°C and lows of 12.5°C.
What is the coldest month in Oslo?
December is the coolest month, with average highs of -1.0°C and lows of -5.1°C.
What is the wettest month in Oslo?
July is the wettest month, averaging 131.1mm of rainfall over around 14 rainy days.
How much rain does Oslo get per year?
Oslo receives around 921mm of rain per year. The driest month is March (47.4mm).
When is the best time to visit Oslo?
The best time to visit Oslo is January to November. See the full month-by-month guide →
Compare Hertz, Avis, Budget, Sixt and 800+ rental companies — book now, pay at pickup.
Compare car hire prices → Affiliate link — we earn a commission at no extra cost to youAs an Amazon Associate we earn from qualifying purchases. Links below are affiliate links.
For the packing side of things, our sister site has a ready-made checklist: Oslo packing list at 247PackingList. For currency, language and country facts see the Norway guide at 247CountryInfo.
Trip essentials for Oslo
Universal travel adapter
Worldwide plug coverage with USB-C — one adapter for every leg of the trip.
Check Price →Check clothing sizes in Norway at 247Sizing before you shop for the trip.
More Oslo travel essentials
Book UK airport parking
Flying out to Oslo from the UK? Compare Gatwick, Luton, Birmingham, Glasgow and Newcastle.
Compare Airport Parking →Travel first aid kit
Compact, TSA-friendly — covers the basics wherever you travel.
Check Price →Last updated:
Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.