Weather in Umeå in May

Shoulder season. May is shoulder season in Umeå — cheaper, quieter, and a genuine gamble. Highs sit at 11.8 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.

May ranks 5 of 12 in Umeå: past the worst of the year but short of July, which is the month to book if the dates are open.

Rain on 12 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Layers, and a genuinely waterproof outer — at 11.8 °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: 4 nights fall below freezing. Across the twenty years measured, the hottest May day reached 23.6 °C and the coldest night fell to -2.9 °C, and the wettest single day dropped 29 mm — roughly 48% of the month's rain in one day.

May is moderately variable: 15 mm in the driest year against 130 mm in the wettest, around an average of 61 mm. Roughly two Mays in three land near that average, and the third does something else entirely.

Wind is light at 3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 80%, which at 11.8 °C means damp rather than muggy — the kind of cold that gets into a coat and stays there.

How May sits in the year

The month is on the way up: 6.6 °C warmer than April, and June adds another 4.8 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.

Daylight in May

18.2 hours of daylight, gaining 3.1 hours across the month. That is between Umeå's extremes of 20.8 and 4.4 hours, so days are long enough not to constrain the plan.

An inland climate

With no coast nearby, the year swings a fair way — 30 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.

How busy it gets

Shoulder. The value months — prices ease off and you get the place closer to itself.

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

May in Umeå versus nearby

If Umeå is one option among several, the nearby comparison is worth making. Rovaniemi is close enough to be a coin toss — within a degree on temperature, 2 days more rain. Trondheim is close enough to be a coin toss — within a degree on temperature, 6 days more rain.

So: May is a compromise. July is 20 points better and is what Umeå is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Umeå

See all twelve months in Umeå, or where else to go in May.