In general the best time to visit San Sebastian is probably August, when the weather is usually great. The hottest months are July, August, September, while the coldest months are January, February, December.
In January, February, March, April, May, June, July, August, September, October, November, December the weather is average. Expect around 132 rainy days, and the precipitation amounts to approximately 187 mm in November.
Climate in San Sebastian
Here is the detailed breakdown of the climate in San Sebastian for each month:
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Maximum Temperature
+73°F
+79°F
+82°F
+88°F
+97°F
+106°F
+106°F
+102°F
+99°F
+88°F
+84°F
+75°F
Average Maximum Temperature
+54°F
+55°F
+59°F
+61°F
+66°F
+70°F
+73°F
+75°F
+73°F
+68°F
+59°F
+55°F
Minimum Temperature
+21°F
+23°F
+23°F
+34°F
+39°F
+48°F
+54°F
+54°F
+45°F
+36°F
+28°F
+21°F
Humidity, %
77
75
73
75
77
79
80
80
78
76
77
76
Rain, mm
159
134
129
140
129
99
93
100
107
143
187
158
Snow, mm
2
2
0
0
0
0
0
0
0
0
0
0
Average wind speed, m/s
2
2
2
2
2
1
1
1
1
2
2
2
Sunny Days
5
5
6
5
5
5
5
5
7
7
6
6
Cloud Days
14
12
14
12
14
16
17
16
14
13
11
13
Rainy Days
12
11
11
13
12
9
9
10
9
11
13
12
Snowy Days
0
0
0
0
0
0
0
0
0
0
0
0
Average Temperature
Here are the average maximum and minimum temperatures in San Sebastian during the whole year:
The hottest month in San Sebastian is August with average maximum temperature going up to +75°F. The coldest month is January with the lowest temperatures of +45°F.
Humidity
The temperature feels different depending on humidity. Here is how humidity in San Sebastian looks throughout the year, in %:
The most humid month in San Sebastian is August with average humidity going up to 80%. The least humid month is March with an average humidity of 73%.
Rain
Amount of rainfall in mm. in San Sebastian during the whole year based on historical data:
The sunniest and driest month is September with approximately 7 sunny days and a total precipitation of around 107 mm. The rainiest and wettest month is November with approximately 13 rainy days and 187 mm of total precipitation.
Snow
Amount of snow in mm. in San Sebastian during the whole year based on historical data:
The snowiest month is February with approximately 0 snowy days.
FAQ
Frequently asked questions about the weather in San Sebastian:
What is the hottest month in San Sebastian?
The hottest month in San Sebastian is August with average maximum temperature of +75°F.
What is the coldest month in San Sebastian?
The coldest month in San Sebastian is January with minimum temperatures of +45°F.
Is San Sebastian worth visiting in winter?
Winter in San Sebastian could be a good time to visit, as the weather is generally ok.
When does it rain the least in San Sebastian?
if you're looking to visit San Sebastian when it rains the least, you should plan your trip for November, January, December. During this time, rainfall is rare with the driest month being July with only 93 mm of rain.
For this page, we’ve looked at the typical weather in San Sebastian, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.