San Sebastián weather in May
San Sebastián in May averages 17°C (62°F), 133 mm of rain and 6.1 hours of sun a day.
Of the twelve months in San Sebastián, May is the sixth warmest, the fifth driest and the fourth sunniest.
- Average temp
- 17°C (62°F)
12–21°C · 54–69°F
- Rainfall
- 133 mm
Showers likely
- Sunshine
- 6.1 h
hours per day
What is San Sebastián like in May?
Daytime
Days are mild.
Rain
Some rain is likely; pack for showers.
Evening
Evenings are cooler. A layer helps after sunset.
What should I pack for San Sebastián in May?
A light rain jacket
About 133 mm falls this month — showers rather than washouts.
A layer for the evening
Evenings cool off noticeably once the sun is down.
May compared with April and June
May in San Sebastián is 3.1°C warmer than April and 13 mm drier than it, which averages 13°C (56°F).
May in San Sebastián is 2.7°C cooler than June and 27 mm wetter than it, which averages 19°C (67°F).
Daylight in San Sebastián in May
On 15 May the sun is up for 14 hours 42 minutes in San Sebastián, rising about 06:43 and setting about 21:25 local time.
May ends 1 hour longer than it begins, so the last week of the month is a different length of day from the first.
That is 41 minutes short of June, the longest-lit month here.
Where to stay in San Sebastián
Dates are a starting point for May.
Travel guides for San Sebastián
What to read before you book.
San Sebastián weather by month
TemperatureRainfall
How May compares with the rest of the year
May is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 9°C / 48°F | 166 mm |
| February | 10°C / 49°F | 143 mm |
| March | 12°C / 54°F | 127 mm |
| April | 13°C / 56°F | 147 mm |
| May | 17°C / 62°F | 133 mm |
| June | 19°C / 67°F | 106 mm |
| July | 21°C / 70°F | 97 mm |
| August | 22°C / 71°F | 110 mm |
| September | 20°C / 67°F | 146 mm |
| October | 17°C / 62°F | 166 mm |
| November | 12°C / 54°F | 224 mm |
| December | 10°C / 50°F | 179 mm |
Check another month
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FAQs about San Sebastián in May
May climate averages for San Sebastián, 1991–2020.
San Sebastián averages 17°C (62°F) in May, ranging from about 12°C (54°F) at night to 21°C (69°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 133 mm falls across May, enough to need a light jacket but not enough to reshape a trip.
No. May averages 17°C (62°F) against 19°C (67°F) in June — 2.7°C cooler.
May is 3.1°C warmer than April, and 13 mm drier.
Yes. May falls inside the most comfortable stretch of the year here, May to October, on temperature and rainfall together.
About 6.1 hours of sun a day on the 1991–2020 average.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what May is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 14 hours 42 minutes of daylight in mid-May, against 15 hours 23 minutes in June and 8 hours 59 minutes in December.
On 15 May, sunrise is about 06:43 and sunset about 21:25 local time. Both shift across the month — the month ends 1 hour longer than it starts.
