Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Coast Brief Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
What does Oslo’s weather look like across the year?
Oslo has a humid continental climate with mild summers and cold, snowy winters. The city sits at the head of the Oslofjord, so coastal influence moderates extremes, but inland air masses can bring sharp frosts. For a quick overview of oslo weather by month, expect July to be the warmest (average highs around 22°C) and January the coldest (average highs near -1°C). The oslo weather year round shows a distinct wet season in late summer and early autumn.
How reliable are extended forecasts for Oslo?
Extended forecasts give a general trend, but accuracy drops beyond 7 days. The oslo weather 14 days outlook can indicate broad patterns, while the oslo weather forecast 15 days is best used as a guide for planning rather than a precise prediction. For short-term decisions, rely on the weather in oslo 10 days and the live forecast above. The weather oslo 30 days outlook is useful only for spotting major shifts in air mass.
FAQ
What is the best time to visit Oslo for mild weather?
Late May to early September offers the mildest conditions, with long daylight and average highs of 18–22°C. July is the warmest, but August often brings more rain. For snow activities, December to March is ideal.
Does Oslo get very cold in winter?
Yes, winter temperatures often drop below freezing, especially at night. January is the coldest month, with average lows around -6°C. Snowfall is common, and the fjord can freeze in severe spells.
How much rain does Oslo receive in a year?
Oslo receives about 760 mm of precipitation annually, spread fairly evenly. August and September are the wettest months, while February and March tend to be drier. Snowfall contributes a significant portion in winter.
Sources
For broader Australian conditions, check our Australia weather hub or see 10-day forecasts for major cities. If you’re comparing Oslo with a southern city, our Melbourne weather page may be useful for a temperate reference.