Oslo, Norway

Oslo sits in an ocean-tempered climate in Norway, and the 2015–2024 weather record gives its sunshine a clear shape: the July peak reaches a 93/100 sun score, with daytime highs around 21°C — a solid base for a long-weekend city trip.

Across a typical year, afternoon temperatures swing between -1°C (January) and 21°C (July). On the rain ledger, March is the safest bet at a 25% chance of a wet day, while July climbs to 43%. Note that average highs never reach 24°C in any month — pack for mild weather rather than hot.

Season by season (on the northern calendar), spring brings 10°C highs with 30% rain-day odds, summer 20°C at 41%, autumn 9°C at 42%, and winter 0°C at 37%. Summer wins on the numbers and winter loses them; everything in between is a trade-off between warmth and crowds.

Best months to visit Oslo

The best month on record is July — a 93/100 sun score, built on 64% cloud cover and 43% rain-day odds — followed by June and August. In practice you have flexibility — May–August all stay above a 70 sun score. The month to avoid on pure weather odds is December (37/100).

Put against its 73 ocean peers in July, it lands below the group median for sunshine, ahead of 37% of them.

Month-by-month breakdown for Oslo → · More destinations for July →

As of the latest refresh, Oslo's next 14 days span -2°C to 12°C; 3 days look mostly sunny while none look likely to be wet — a live sun score of 50/100.