Weather in Reykjavík in June

A hard month. June is a hard month in Reykjavík, and worth planning around. Highs sit at 12.1 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.

June ranks 2 of 12 in Reykjavík. Only July scores clearly higher, and the difference is small enough to be settled by price rather than weather. That is not a contradiction: June is among the best months Reykjavík has, and it is still hard going. This is a city with no easy season rather than a city you have caught at a bad time.

This is persistent light rain rather than storms: 16 wet days but only 2 heavy ones. It rarely cancels anything outright, and it rarely fully clears either. A jacket beats an umbrella. Layers, and a genuinely waterproof outer — at 12.1 °C the difference between a good day and a miserable one is entirely down to what you are wearing.

What the averages hide

Averages flatten a month, and this one hides a few things: the day barely swings — 5 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest June day reached 19 °C and the coldest night fell to 1.4 °C, and the wettest single day dropped 31 mm — roughly 37% of the month's rain in one day.

June is moderately variable: 20 mm in the driest year against 154 mm in the wettest, around an average of 83 mm. Roughly two Junes in three land near that average, and the third does something else entirely.

Wind is light at 8 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 83%, which at 12.1 °C means damp rather than muggy — the kind of cold that gets into a coat and stays there.

How June sits in the year

The month is on the way up: 3.6 °C warmer than May, and July adds another 1.8 °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 Reykjavík's year: 21 hours of daylight, gaining 1 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

Sea temperature

The sea sits at about 9.8 °C in June — too cold to swim without a wetsuit. The sea peaks at 12 °C in August and bottoms out at 7.3 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Busy. Popular without being frantic; book the things you care about, improvise the rest.

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

June in Reykjavík versus nearby

If Reykjavík is one option among several, the nearby comparison is worth making. Akureyri is the weaker option in June — 4.8 °C cooler, 1 day more rain. Glasgow is close enough to be a coin toss — 4.4 °C warmer, 4 days more rain.

So: June is effectively as good as it gets here — 5 points behind July, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Reykjavík

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