Weather in Anchorage in May

Shoulder season. May sits in between. You will get good days and you will lose some. Highs sit at 11.4 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.

May ranks 4 of 12 in Anchorage: past the worst of the year but short of July, which is the month to book if the dates are open.

Rain on 11 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 11.4 °C the difference between a good day and a miserable one is entirely down to what you are wearing.

What the averages hide

The averages here are honest — no hidden extremes worth planning around. Across the twenty years measured, the hottest May day reached 22.6 °C and the coldest night fell to -5.5 °C.

May is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest May on record still delivered 82 mm against 26 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 47 mm average is a reasonable planning figure, not a promise.

Wind is light at 5.5 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 78%, which at 11.4 °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: 6.7 °C warmer than April, and June adds another 4.6 °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

17.4 hours of daylight, gaining 2.5 hours across the month. That is between Anchorage's extremes of 19.3 and 5.5 hours, so days are long enough not to constrain the plan.

An inland climate

With no coast nearby, the year swings a fair way — 27 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.

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.

May in Anchorage versus nearby

If Anchorage is one option among several, the nearby comparison is worth making. Prince George is a better bet in May — 4.7 °C warmer, 2 days more rain. Tofino is close enough to be a coin toss — 2.6 °C warmer, 2 days more rain.

So: May works, with July the better month by 13 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Anchorage

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