2026 Climate Averages

Oslo: Weather Guide & Climate

Complete month-by-month weather guide: Oslo. Best time to visit: May, June, July, August, September. Plan your trip with detailed climate data.

☀️ Climate Overview

Oslo has a Cool climate with average yearly highs of 12°C, lows of 4°C, and approximately 11 rainy days per month.

The best time to visit Oslo is during May, June, July, August, September, when weather is pleasant and ideal for outdoor activities

Drier season: Jan–Nov Wetter season: Jul–Dec

Now

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Feels like --
Wind --
Humidity --
UV Index --
Local time —

Air Quality

Best Time

J F M A M J J A S O N D
Conditions Excellent

Hottest

22°C June
Avg Low 12°C
Rain 12 days

Coldest

-5°C January
Avg High 0°C
Rain 10 days

Driest Month

7 rainy days April
Avg High 12°C
Avg Low 2°C

Windiest Month

15 km/h

January (gusts 33)

Forecast for your trip dates

Up to 14 days ahead

Weather by Season

Spring

Mar–May

High 12°C
Low 3°C
Rain 8 days
Crowds
Moderate
Travel Costs Shoulder Rates

Summer

Jun–Aug

High 22°C
Low 13°C
Rain 14 days
Crowds
Very Busy
Travel Costs Peak Rates

Autumn

Sep–Nov

High 11°C
Low 6°C
Rain 13 days
Crowds
Moderate
Travel Costs Shoulder Rates

Winter

Dec–Feb

High 1°C
Low -4°C
Rain 11 days
Crowds
Quiet
Travel Costs Value Rates

Month-by-Month Weather Table

January

Good
0° / -5°
10d (83mm)
2.4h
86% Very Humid
UV 0.5 Low

February

Good
2° / -4°
10d (60mm)
5h
84% Very Humid
UV 1.6 Low

March

Good
7° / -1°
8d (52mm)
7.3h
76% Humid
UV 3.5 Moderate

April

Good
12° / 2°
7d (48mm)
10.2h
64% Moderate
UV 6 High

May

Best
Excellent
17° / 7°
9d (59mm)
12.2h
62% Moderate
UV 7.7 Very High

June

Best
Excellent
22° / 12°
12d (93mm)
13.1h
68% Humid
UV 8.4 Very High

July

Best
Excellent
22° / 14°
16d (147mm)
11.3h
74% Humid
UV 7 High

August

Best
Excellent
21° / 13°
13d (105mm)
10.1h
77% Humid
UV 5.6 High

September

Best
Excellent
17° / 10°
12d (107mm)
6.7h
82% Very Humid
UV 3.3 Moderate

October

Wet
11° / 6°
14d (118mm)
4.2h
86% Very Humid
UV 1.6 Low

November

Good
6° / 2°
12d (83mm)
2h
88% Very Humid
UV 0.5 Low

December

Wet
1° / -3°
14d (96mm)
1.3h
90% Very Humid
UV 0.2 Low

⚖️Find Your Ideal Month

Adjust the sliders to weight what matters most to you.

5
3
3
Your Best MonthOctScore: 6.2
1.Oct
6.22.Dec
5.43.Mar
5.24.Apr
4.75.Jul
4.76.Nov
4.77.Jan
4.38.Feb
4.39.Jun
4.310.Aug
4.311.May
3.812.Sep
2.9

Where to Stay

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Oslo

Viking heritage with Vigeland Sculpture Park and Fram polar ship museum, opera house, sculpture park, and fjord access.

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Ready to Plan Your Oslo Trip?

Get strategic travel tips, seasonal insights, and expert recommendations.

Frequently Asked Questions

What type of climate does Oslo have?
Oslo has a cool climate with average yearly temperatures of 12°C and 4°C.
When is the best time to visit Oslo?
The best time to visit Oslo is during May, June, July, August, September, when temperatures average around 17°C and conditions are ideal for sightseeing.
What are the hottest and coldest months in Oslo?
The hottest month in Oslo is June with average highs of 22°C, while the coldest is January with average lows of -5°C.
When is the rainy season in Oslo?
Oslo sees the most rain in July (16 rainy days), while April is the driest month (7 rainy days).
Does it get cold at night in Oslo?
Night temperatures vary throughout the year. The coldest nights are in January (-5°C), while June has the warmest evenings (12°C). Pack layers for cooler months.

Weather Data: Based on 2020–2025 historical climate data from Open-Meteo

Last Updated: February 2026

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