Weather in Oslo, Norway

Weather - Oslo, Norway

Oslo has a classic northern European climate: cold, snowy winters and pleasantly mild summers. Expect long daylight and brief, bright summers ideal for sightseeing, while winter brings low temperatures, snow and shorter daylight hours — all useful to know when booking flights and planning activities.

Weather - Oslo - January

January is one of the coldest months in Oslo with average highs around −1 °C and lows near −6 °C. Snow is common (about a dozen snow days on average), daylight is brief (roughly 7 hours), and daylight/sunshine is limited — dress warmly and plan indoor options for evenings.

Weather - Oslo - February

February remains wintry but slowly brightens: typical highs around 1 °C and lows near −5 °C, with roughly 12 precipitation days and a handful of snowy days. It’s still prime time for winter sports and aurora-chasing trips farther north, but central Oslo is cold and crisp — ideal if you like clear winter city walks.

Weather - Oslo - March

March signals the first real thaw — average highs climb to about 5 °C and lows to around −3 °C. Snowfall decreases, daylight increases toward ~12 hours, and early spring conditions make the city feel fresher; pack layers for fluctuating temperatures during the day.

Weather - Oslo - April

April is a transitional month with milder days (average high ~11 °C, low ~1 °C) and only a few snowy days. Expect more sunshine and longer days (around 15 hours), mixed with occasional showers — a good time for city sightseeing before the summer crowds arrive.

Weather - Oslo - May

May brings real spring warmth: averages reach roughly 16 °C by day and 6 °C at night, with increasing sunshine and roughly two dozen sunny or partly sunny days. Parks and waterfronts come alive — an excellent shoulder-season choice for pleasant weather without peak-season prices.

Weather - Oslo - June

June marks the start of summer with average highs near 20 °C and lows around 11 °C, long daylight (about 19 hours) and comfortable conditions for outdoor activities. Sea temperatures are still cool (~14 °C), but long sunny evenings and mild temperatures make it one of the best months for visiting.

Weather - Oslo - July

July is typically the warmest month (average highs around 22 °C, lows about 13 °C) and offers the warmest sea temperatures (~17 °C). Expect occasional summer showers but plenty of long, light evenings — ideal for exploring Oslo’s museums, islands and outdoor festivals.

Weather - Oslo - August

August stays comfortably warm (highs ~20 °C and lows ~13 °C) with similar conditions to July and slightly more chance of rain. It’s still a good month for swimming in the fjord for the brave and for taking advantage of extended daylight for sightseeing.

Weather - Oslo - September

September cools down to averages around 16 °C (day) and 9 °C (night) with crisp mornings and pleasant afternoons. The autumn colours begin to appear, and fewer tourists make this a smart shoulder-season pick for good weather and easier travel logistics.

Weather - Oslo - October

October brings autumn chill — expect average highs near 10 °C and lows around 5 °C, with more overcast days and increasing rainfall. It’s a moody, atmospheric time to visit; pack waterproof layers and be ready for shorter daylight hours.

Weather - Oslo - November

November is cool and often damp, with daytime averages around 5 °C and nights near 1 °C; snow becomes more likely toward month’s end. Daylight drops significantly (around 8 hours), making it a quieter time for travelers seeking lower fares and indoor cultural experiences.

Weather - Oslo - December

December returns to winter conditions with average highs close to 0 °C and lows around −4 °C, frequent overcast skies and regular snow events. Short daylight (about 6 hours) and festive holiday lights create a classic Nordic winter atmosphere — perfect for holiday trips and winter city photography.

Table with temperatures throughout the year