The best times to visit San Sebastian for ideal weather are

April 30th to November 11th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other San Sebastian Travel Info

Weather in San Sebastian


Average temperatures in San Sebastian vary somewhat. Considering humidity, temperatures feel nice most of the year, excluding some cold weeks in the winter, with a chance of rain or snow throughout most of the year. The area is less temperate than some — in the 37th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit San Sebastian, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally early August where highs are regularly around 73.8°F (23.2°C) with temperatures rarely dropping below 62.1°F (16.7°C) at night.

San Sebastian Temperatures (Fahrenheit)


San Sebastian Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

San Sebastian Perceived Temperature (F)


San Sebastian Perceived Temperature (C)



Average San Sebastian Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 51.8 47.2 43.2
Feb 52.2 46.8 42.2
Mar 55.5 49.8 45.3
Apr 60.1 53.6 48.9
May 63.5 57 52.4
Jun 68.4 62 57.4
Jul 71.7 65.4 61
Aug 72.7 66.3 61.7
Sep 69.8 63.6 58.9
Oct 65.7 59.8 55
Nov 57.5 52.8 48.7
Dec 53.3 48.8 44.5

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 11 8.4 6.2
Feb 11.2 8.2 5.7
Mar 13.1 9.9 7.4
Apr 15.6 12 9.4
May 17.5 13.9 11.3
Jun 20.2 16.7 14.1
Jul 22.1 18.6 16.1
Aug 22.6 19.1 16.5
Sep 21 17.6 14.9
Oct 18.7 15.4 12.8
Nov 14.2 11.6 9.3
Dec 11.8 9.3 6.9



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in San Sebastian are October, September, and then August. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around late June. For example, on the week of June 25th there is 1 day of precipitation on average. By contrast, it’s most likely to rain or snow in late January with an average of 4 days of significant precipitation the week of January 22nd.

When can you find snow in San Sebastian? Weather stations report a bit of annual snow likely to be deepest around January, especially close to late January. The best time to ski (if at all) in San Sebastian is often around around January 22nd when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in San Sebastian.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in San Sebastian (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 41% 1.5 7.8
Feb 39% 0.5 6
Mar 36% 0 5.3
Apr 38% 0 4.7
May 36% 0 5.1
Jun 30% 0 4.2
Jul 27% 0 3.5
Aug 27% 0 4.4
Sep 24% 0 3.8
Oct 24% 0 5.3
Nov 41% 0 9.1
Dec 36% 1.2 5.8

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 41 3.8 19.8
Feb 39 1.3 15.2
Mar 36 0 13.5
Apr 38 0 11.9
May 36 0 13
Jun 30 0 10.7
Jul 27 0 8.9
Aug 27 0 11.2
Sep 24 0 9.7
Oct 24 0 13.5
Nov 41 0 23.1
Dec 36 3 14.7


Humidity and Wind

San Sebastian has some very humid months, and above average humidity throughout the year. The least humid month is February (65.7% relative humidity), and the most humid month is July (80.3%).

Wind in San Sebastian is usually moderate. The windiest month is December, followed by November and February. December’s average wind speed of around 9.8 knots (11.2 MPH or 18.1 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid to late November where average top sustained speeds reach 16.7 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in San Sebastian.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 8.4 Gentle breeze 14.3 Significant breeze
Feb 9.4 Gentle breeze 15.1 Significant breeze
Mar 8.7 Gentle breeze 14.1 Significant breeze
Apr 7.6 Gentle breeze 12.3 Significant breeze
May 7.4 Gentle breeze 11.7 Significant breeze
Jun 6.2 Light breeze 10.4 Gentle breeze
Jul 5.7 Light breeze 9.9 Significant breeze
Aug 5.7 Light breeze 9.9 Gentle breeze
Sep 5.8 Light breeze 9.8 Significant breeze
Oct 7.3 Gentle breeze 12 Significant breeze
Nov 9.7 Gentle breeze 15.3 Significant breeze
Dec 9.8 Gentle breeze 15.3 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 72.5%
Feb 65.7%
Mar 67.9%
Apr 73.2%
May 76.9%
Jun 79.5%
Jul 80.3%
Aug 78.8%
Sep 77.2%
Oct 70.6%
Nov 71.5%
Dec 67.4%


Is it Safe to Travel to San Sebastian?

Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for Spain; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Nov 22, 2023.


The Busiest and Least Crowded Months

The busiest month for tourism in San Sebastian, Spain is July, followed by August and March. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit San Sebastian in November. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 43.8 in November means 43.8% of the tourists vs. July.



Overall San Sebastian Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 66.6°F (19.2°C) and 53.5°F (11.9°C) with warmer temperatures in the later months. Rain is very common with roughly 11 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see the least precipitation with 8 to 9 days of precipitation per month. June – August is the busiest season for tourism in San Sebastian, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 71.8°F (22.1°C) and 50.8°F (10.4°C), which will feel comfortable given the humidity and wind. It rains or snows a significant amount: 7 to 12 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is too cold this time of year in San Sebastian to be enjoyable for warm weather travelers. The average high during this season is between 54.9°F (12.7°C) and 48.6°F (9.2°C). On average, it rains or snows a great amount: 11 to 13 times per month. These times of year are fairly slow with tourists.


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