Weather in Edinburgh in May

Shoulder season. May sits in between. You will get good days and you will lose some. Highs sit at 13.5 °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 Edinburgh: past the worst of the year but short of August, which is the month to book if the dates are open.

This is persistent light rain rather than storms: 15 wet days but only 1 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 13.5 °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 23.4 °C and the coldest night fell to -0.1 °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 87 mm against 25 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 59 mm average is a reasonable planning figure, not a promise.

Wind is light at 12.9 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 83%, which at 13.5 °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: 2.9 °C warmer than April, and June adds another 2.7 °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

16.2 hours of daylight, gaining 1.8 hours across the month. That is between Edinburgh's extremes of 17.6 and 7 hours, so days are long enough not to constrain the plan.

An inland climate

Despite being inland, the year stays fairly even: 16.3 °C between the year's warmest afternoons and coldest nights.

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 Edinburgh versus nearby

If Edinburgh is one option among several, the nearby comparison is worth making. Glasgow is close enough to be a coin toss — within a degree on temperature, 3 days more rain. Manchester is close enough to be a coin toss — within a degree on temperature, the same number of rain days.

So: May works, with August the better month by 9 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Edinburgh

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