San Sebastian weather
Our guide to the weather in San Sebastian during May
We've looked at the most up-to-date weather data for San Sebastian, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about San Sebastian weather in May.
How warm is it in San Sebastian during May?
The temperature is extremely stable in May with average highs of 21℃ and lows just 2℃ lower at 19℃. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.
Does it rain in San Sebastian during May?
The answer is no. San Sebastian is typically bone dry in May. You're not likely to see a thunderstorm during your trip.
Is it windy in San Sebastian during May?
You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during May. With warm air temperatures and high humidity, any breeze will feel warm but refreshing.
How warm is the sea in San Sebastian during May?
The water around San Sebastian is a bracing 16℃ during May and would be considered too cold for swimming. Those who are a bit more hardy or frequently swim in cooler open water might want to take a quick dip. A wetsuit would be advisable if you wish to spend longer than 5 minutes in the water.
Weather in San Sebastian
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