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.


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    Weather in San Sebastian

    Temperature

    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)

    Key
    High
    Average
    Low

    San Sebastian Temperatures (Celsius)

    Key
    High
    Average
    Low

    “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)

    Key
    High
    Average
    Low

    San Sebastian Perceived Temperature (C)

    Key
    High
    Average
    Low

     

    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

    MonthAvg. High (°F)Avg. Mean (°F)Avg. Low (°F)
    Jan51.847.243.2
    Feb52.246.842.2
    Mar55.549.845.3
    Apr60.153.648.9
    May63.55752.4
    Jun68.46257.4
    Jul71.765.461
    Aug72.766.361.7
    Sep69.863.658.9
    Oct65.759.855
    Nov57.552.848.7
    Dec53.348.844.5

    Show Celsius

    MonthAvg. High (°C)Avg. Mean (°C)Avg. Low (°C)
    Jan118.46.2
    Feb11.28.25.7
    Mar13.19.97.4
    Apr15.6129.4
    May17.513.911.3
    Jun20.216.714.1
    Jul22.118.616.1
    Aug22.619.116.5
    Sep2117.614.9
    Oct18.715.412.8
    Nov14.211.69.3
    Dec11.89.36.9


     

    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.

    Chanceof Precipitation

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

    Key
    Days with precipitation

    Snow on the Ground

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

    Key
    Snow depth

    Average Rain and Snow by Month

    Show Inches

    MonthDaily Chance of RainAverage Snow Depth (in)Total Precipitation (in)
    Jan41%1.57.8
    Feb39%0.56
    Mar36%05.3
    Apr38%04.7
    May36%05.1
    Jun30%04.2
    Jul27%03.5
    Aug27%04.4
    Sep24%03.8
    Oct24%05.3
    Nov41%09.1
    Dec36%1.25.8

    Show Centimeters

    MonthDaily Chance of RainAverage Snow Depth (cm)Total Precipitation (cm)
    Jan413.819.8
    Feb391.315.2
    Mar36013.5
    Apr38011.9
    May36013
    Jun30010.7
    Jul2708.9
    Aug27011.2
    Sep2409.7
    Oct24013.5
    Nov41023.1
    Dec36314.7

     

    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.

    Key
    Avg. Relative Humidity

    Wind

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

    Key
    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.

    MonthAvg. WindAvg. Wind FeelSustained High WindHigh Wind Feel
    Jan8.4Gentle breeze14.3Significant breeze
    Feb9.4Gentle breeze15.1Significant breeze
    Mar8.7Gentle breeze14.1Significant breeze
    Apr7.6Gentle breeze12.3Significant breeze
    May7.4Gentle breeze11.7Significant breeze
    Jun6.2Light breeze10.4Gentle breeze
    Jul5.7Light breeze9.9Significant breeze
    Aug5.7Light breeze9.9Gentle breeze
    Sep5.8Light breeze9.8Significant breeze
    Oct7.3Gentle breeze12Significant breeze
    Nov9.7Gentle breeze15.3Significant breeze
    Dec9.8Gentle breeze15.3Significant breeze

    Show Relative Humidity by Month

    MonthAvg. Relative Humidity
    Jan72.5%
    Feb65.7%
    Mar67.9%
    Apr73.2%
    May76.9%
    Jun79.5%
    Jul80.3%
    Aug78.8%
    Sep77.2%
    Oct70.6%
    Nov71.5%
    Dec67.4%

     

    Is it Safe to Travel to San Sebastian?

    Our best data indicates this area is generally safe. As of Aug 21, 2019 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 Aug 14, 2019.


     

    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

    Key
    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.

     

    Best Times to TravelSpain › San Sebastian, Spain


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