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.
San Sebastian Travel Guide
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)
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.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
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.
The graph below shows the % chance of rainy and snowy days in San Sebastian.
Snow on the Ground
The graph below shows the average snow on the ground in San Sebastian (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
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.
The graph below shows wind speed (max and average) in knots.
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|
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
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.