Weather in Gijón in May

Prime time. May is about as good as Gijón gets. Highs average 19.5 °C, lows 12 °C, and rain falls on 12 days — nothing in the month is working against you.

May ranks 5 of 12 in Gijón: 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. 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 May reaches 30 °C. Across the twenty years measured, the hottest May day reached 30.5 °C and the coldest night fell to 7 °C, and the wettest single day dropped 35 mm — roughly 56% of the month's rain in one day.

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 133 mm against 22 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 62 mm average is a reasonable planning figure, not a promise.

Wind is light at 9.5 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 May sits in the year

The month is on the way up: 2.2 °C warmer than April, and June adds another 3.3 °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

14.7 hours of daylight, gaining 1.1 hours across the month. That is between Gijón's extremes of 15.4 and 9 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 14.8 °C in May — cold — a quick dip rather than a swim, and a wetsuit if you are in for longer. The sea peaks at 20.9 °C in August and bottoms out at 12.5 °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.

May in Gijón versus nearby

If Gijón is one option among several, the nearby comparison is worth making. Valladolid is close enough to be a coin toss — 2.6 °C warmer, 4 days less rain. Bilbao is close enough to be a coin toss — within a degree on temperature, the same number of rain days.

So: May works, with July the better month by 8 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Gijón

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