Our verdict
The best time to visit Oslo is May-June
The warmest month of the year in Oslo is July, where the average temperature gets to around 20℃ (69℉), but temperatures can reach as high as 26℃ (80℉) on the hottest days in summer. The weather at night in the winter, which is around January-time, can get down to a minimum of -14℃ (8℉).
The sun stays up the longest in Oslo in June, so you’ll get the most out of your daytime activities if you visit around this time. The wet season in Oslo usually falls during the months surrounding August each year. It’s not uncommon to get some decent rainfall or light showers during this time, but on some days the weather tends to be fine for a majority of the day, with only a few drops of rain falling from a passing shower.
For more information about when to travel to Oslo, the monthly weather breakdown and the best information and tools to book your trip, continue reading below.
Quick links: Fast facts / Seasons / Average temperatures / Monthly climate / FAQs / Map
Oslo seasons
Before you continue, it’s important to know when the seasons are in Oslo as they might be different to yours depending on where in the world you’re travelling from. Oslo is in the Northern Hemisphere, so the seasons fall during these months:
| Season | Months |
|---|---|
| Summer | June to August |
| Autumn/fall | September to November |
| Winter | December to February |
| Spring | March to May |
Average temperatures in Oslo
If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Oslo for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.
Oslo climate by month
If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Oslo for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.
Jump to:
Oslo in January
- Average temperature: -5℃ (23℉)
- Average high temperature: -3℃ (27℉)
- Average low temperature: -8℃ (18℉)
- Average humidity: 91%
- Average sunny days: 17 days
- Average rainfall: 27mm (1") over 3 days
- Average snow days: 13 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Oslo in January, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Oslo in February
- Average temperature: -5℃ (23℉)
- Average high temperature: -2℃ (28℉)
- Average low temperature: -8℃ (17℉)
- Average humidity: 92%
- Average sunny days: 15 days
- Average rainfall: 33mm (1") over 3 days
- Average snow days: 13 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Oslo in February, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Oslo in March
- Average temperature: -1℃ (30℉)
- Average high temperature: 2℃ (35℉)
- Average low temperature: -5℃ (23℉)
- Average humidity: 90%
- Average sunny days: 16 days
- Average rainfall: 34mm (1") over 4 days
- Average snow days: 12 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Oslo in March, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Oslo in April
- Average temperature: 5℃ (41℉)
- Average high temperature: 9℃ (48℉)
- Average low temperature: 1℃ (34℉)
- Average humidity: 74%
- Average sunny days: 15 days
- Average rainfall: 28mm (1") over 10 days
- Average snow days: 5 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Oslo in April, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Oslo in May
- Average temperature: 10℃ (51℉)
- Average high temperature: 14℃ (58℉)
- Average low temperature: 5℃ (41℉)
- Average humidity: 70%
- Average sunny days: 12 days
- Average rainfall: 68mm (3") over 17 days
- Average snow days: 2 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Oslo in May, make sure you pack a warm jacket or coat.
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Oslo in June
- Average temperature: 14℃ (56℉)
- Average high temperature: 18℃ (64℉)
- Average low temperature: 8℃ (47℉)
- Average humidity: 73%
- Average sunny days: 10 days
- Average rainfall: 61mm (2") over 18 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Oslo in June, make sure you pack a warm jacket or coat.
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Oslo in July
- Average temperature: 16℃ (61℉)
- Average high temperature: 20℃ (69℉)
- Average low temperature: 11℃ (52℉)
- Average humidity: 76%
- Average sunny days: 7 days
- Average rainfall: 69mm (3") over 22 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Oslo in July, make sure you pack a coat or jumper for the evenings and some light clothes for the daytime.
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Oslo in August
- Average temperature: 14℃ (58℉)
- Average high temperature: 18℃ (65℉)
- Average low temperature: 10℃ (50℉)
- Average humidity: 80%
- Average sunny days: 8 days
- Average rainfall: 77mm (3") over 20 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Oslo in August, make sure you pack a warm jacket or coat.
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Oslo in September
- Average temperature: 11℃ (51℉)
- Average high temperature: 15℃ (58℉)
- Average low temperature: 7℃ (45℉)
- Average humidity: 81%
- Average sunny days: 12 days
- Average rainfall: 62mm (2") over 15 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Oslo in September, make sure you pack a warm jacket or coat.
Oslo in October
- Average temperature: 5℃ (41℉)
- Average high temperature: 8℃ (46℉)
- Average low temperature: 3℃ (37℉)
- Average humidity: 83%
- Average sunny days: 12 days
- Average rainfall: 63mm (2") over 14 days
- Average snow days: 4 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Oslo in October, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Oslo in November
- Average temperature: 1℃ (33℉)
- Average high temperature: 2℃ (36℉)
- Average low temperature: -1℃ (30℉)
- Average humidity: 88%
- Average sunny days: 11 days
- Average rainfall: 71mm (3") over 10 days
- Average snow days: 9 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Oslo in November, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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Oslo in December
- Average temperature: -4℃ (26℉)
- Average high temperature: -2℃ (29℉)
- Average low temperature: -6℃ (22℉)
- Average humidity: 89%
- Average sunny days: 16 days
- Average rainfall: 37mm (1") over 6 days
- Average snow days: 12 days
of pure sunshine
of showers or rain
What to pack: If you’re heading to Oslo in December, make sure you pack a thick snow/winter jacket, thermals and some extra layers as it's always very cold.
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