Weather in Oslo in June

A good month. June is a solid month to be in Oslo. Highs average 19.5 °C, lows 10.6 °C, and rain falls on 14 days — nothing in the month is working against you.

June is the highest-scoring month of the twelve. The nearest rival is July, and the month at the other end of the year is January.

Rain on 14 days, 3 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average June reaches 30 °C. Across the twenty years measured, the hottest June day reached 31.2 °C and the coldest night fell to 3.8 °C, and the wettest single day dropped 38 mm — roughly 40% of the month's rain in one day.

June is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest June on record still delivered 154 mm against 47 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 96 mm average is a reasonable planning figure, not a promise.

Wind is light at 1.1 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 78%, high enough to notice on the warm days without dominating them.

How June sits in the year

The month is on the way up: 4 °C warmer than May, and July adds another 2.2 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.

Daylight in June

June is at or near the longest days of Oslo's year: 18.8 hours of daylight, gaining 0.6 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

An inland climate

With no coast nearby, the year swings a fair way — 28.8 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

June in Oslo versus nearby

If Oslo is one option among several, the nearby comparison is worth making. Kristiansand is close enough to be a coin toss — 3.7 °C cooler, 4 days less rain. Gothenburg is close enough to be a coin toss — 2.2 °C cooler, 1 day less rain.

So: June is the answer for Oslo. If it is booked out or priced out, July is the next best thing at 5 points behind, and January is the month to keep off the shortlist.

Every month in Oslo

See all twelve months in Oslo, or where else to go in June.