This is due to the warmth of the Gulf Stream, which results in a temperate climate for much of the country. Inland areas (like Oslo) have a continental climate with colder winters (think minus 13 degrees Fahrenheit, or 25 below zero Celsius) but warmer summers.
An interesting phenomenon in Norway (and other parts of Scandinavia) is the seasonal change in the length of day and night. In midwinter, daylight lasts five to six hours in southern Norway while darkness prevails in the north.
In midsummer, daylight takes over, and there is no night darkness during June and July, even as far south as Trondheim. The city receives a significant amount of rainfall throughout the year with an average of 30 inches.
January is typically the coldest month, with three out of four days recording temperatures below freezing. In spring, the snow melts, there's a lot of sunlight and temperatures quickly rise, usually in May.
Snow might still blanket many parts of the country, but in the south temperatures are warming up. The best time to go to Norway is early summer, especially in the months of June and July.
Temperatures are regularly below freezing and many parts of the country are blanketed in snow. January and February are dark and the coldest months, so if you're heading to one of the ski areas in Norway, pick March.
This destination provides a long, dark viewing season since it is located beyond the Arctic Circle (especially during polar nights, when there is no sunlight). As soon as summer gets a firm grip on Norway, usually in late May or early June, you’ll see the locals out and about, enjoying the sun after a long and cold winter, barbecuing in the parks or at the beach, and generally just being happy.
Most of the snow in the mountains has melted away, and lots of people spend their summer holiday out in the nature. Outdoor recreation is a major part of our national identity, and is also established by law.
Download Yr’s free weather app for iOS or Android. If you go hiking in the mountains or are out at sea, prepare for everything and make sure you bring waterproof and windproof clothing, as well as a layer of wool.
Even if you should be careful not to underestimate the weather, the summer is the time of year when you can relax the most in regard to what to wear. Blueberries are common in Norwegian forests and mountains, and will start to ripen in the middle of summer in Southern Norway and a bit later further north.
In July and August, you will see roadside booths offering locally grown strawberries and cherries for sale. Barbecuing vegetables, fish, meat, and poultry for dinner is a Norwegian summer tradition, and at the first sign of summer Norwegians of legal drinking age will flock to pubs offering for a beer on the pavement or in a beer garden.
This “utensils” (literally “outdoor beer”) is so ingrained that the first opportunity for it will often be mentioned in the national press. Moderate quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
Snow accumulations less than one inch. Partly cloudy early followed mostly cloudy skies and a few snow showers later in the day.