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San Sebastian in July: Weather, Average temperature and Climate

Discover the weather for San Sebastian in July and if it’s a good time to travel (based on historical data).
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July

Weather in San Sebastian in July 2025

OK Weather
Warm
🌧️
Rainy
🌊
Fresh water
July could be a good time to visit San Sebastian, as the weather is generally fine. The average high temperature is around +23°C, and there are typically 4 sunny days in July. However, expect about 16 rainy days, and total monthly rainfall of approximately 93 mm. The weather is changeable so pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+23°C
Avg. max. temperature
+12°C
Min.
+41°C
Max.
93 mm
Total precipitation
80%
Avg. humidity
2 m/s
Avg. wind
4 ☀️
Sunny Days
9 ⛅️
Cloudy
16 🌦
Rainy
Our opinion: San Sebastian has OK weather in July.
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Average temperature in San Sebastian in July

Here are the expected maximum, average and minimum temperatures in San Sebastian for July based on the historical data.
Last Year
Historical Data

The expected average maximum temperature in July is +24°C with a maximum of +34°C and a minimum of +15°C.

The average maximum temperature goes up 16% by the end of the month, compared with the beginning of the month, from +22°C to +25°C.

Is San Sebastian warm or cold in July?

San Sebastian is typically warm in July.

Maximum temperatures go up compared to the previous month from +21°C to +23°C. The minimum temperature also goes up from +15°C to +18°C.

It’s generally warm, but pack a long-sleeve shirt for evenings.

July is one of the warmest months in San Sebastian, here is the comparison with other months:

Water temperature in San Sebastian in July

Water in San Sebastian in July is Fresh. It varies from +18°C to +23°C, with an average of +21°C. This is almost similar to the air temperature, which averages +23°C.

The water temperature in July is one of the warmest of the entire year:

The warmest water temperatures in San Sebastian are reached in August, when the average sea temperature rises to +21°C. The coldest water temperatures are in February, with an average of +12°C.

Can you swim in San Sebastian in July?

Water temperature (+21°C) in San Sebastian in July might be suited for short swims and acclimatized swimmers might find it refreshing.
🦭
Cold
Below +16°C
🏄‍♂️
Fresh
16°C - 21°C
🏊
Comfortable
21°C - 25°C
👙
Warm
25°C - 28°C
🔥
Very warm
+28°C and up
Think of bringing a full-body or shorty wetsuit (3mm-5mm thickness) to provide insulation and maintain body heat.

Climate in San Sebastian in July

San Sebastian weather looks like this, on average, in July and the surrounding months.
JuneJulyAugust
Avg. temperature
+21°C+23°C+24°C
Min. temperature
+9°C+12°C+12°C
Max. temperature
+41°C+41°C+39°C
Rainfall
102 mm93 mm102 mm
Wind
2 m/s2 m/s1 m/s
Avg. water temperature
+19°C+21°C+21°C
Humidity
80%80%80%
Air pressure
1017 HPa1018 HPa1017 HPa
Sunny days
445
Cloudy days
898
Rainy days
171616
Snowy days
000

July weather is still as ok as in June. It’s getting warmer as July arrives. The average maximum temperature goes up from +21°C to +23°C during the day. As July arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 102 mm to 93 mm. Humidity levels don’t change as the month goes on, averaging around 80%. The average wind speed doesn’t change much during July, staying around 2 m/s. The amount of sunny days stay about the same, averaging 4 sunny days during the month.

August brings much the same weather, it remains ok.

Wind

Wind speed in San Sebastian in July based on historical data.
Last Year
Historical Data

The average wind speed is 2 m/s getting up to 3 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in San Sebastian is gradually decreasing during July, going from 3 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during July in San Sebastian based on historical data.
Last Year
Historical Data
Total precipitation in July is about 104 mm, with a 61% chance of rain on a typical day. The maximum amount of rainfall per day is around 20 mm, which is considered light rain. July is a pretty wet month with over 19 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
Here’s how July is compared with other months in the amount of precipitation, total mm:
San Sebastian wettest month is November, where a typical day has a 60% chance of precipitation and 191 mm of rainfall per day. July, on the other hand, is the driest month with a mere 52% chance of precipitation and 93 mm of rainfall per day.

How was the weather last July in San Sebastian?

This is the weather in San Sebastian in July 2024:
1 July
🌧️
+22°C
2 July
☁️
+22°C
3 July
☁️
+24°C
4 July
☁️
+24°C
5 July
☁️
+24°C
6 July
☁️
+23°C
7 July
☀️
+31°C
8 July
☀️
+25°C
9 July
🌧️
+25°C
10 July
☀️
+26°C
11 July
🌧️
+22°C
12 July
☁️
+24°C
13 July
🌧️
+24°C
14 July
☀️
+34°C
15 July
🌧️
+22°C
16 July
☁️
+23°C
17 July
☁️
+24°C
18 July
☁️
+23°C
19 July
☁️
+24°C
20 July
☁️
+23°C
21 July
🌧️
+23°C
22 July
☀️
+25°C
23 July
☁️
+25°C
24 July
🌧️
+21°C
25 July
🌧️
+20°C
26 July
☁️
+23°C
27 July
☀️
+26°C
28 July
☀️
+27°C
29 July
☀️
+27°C
30 July
🌧️
+24°C
31 July
☀️
+25°C
In July 2024 San Sebastian had 9 sunny days, 13 cloudy days, and 9 rainy days. The average maximum temperature was +24°C, with an absolute maximum of +34°C and a minimum of +20°C. The average humidity was 83%, with a maximum of 100% and a minimum of 53%. The average wind speed was 2 m/s, with a maximum of 6 m/s and a minimum of 0 m/s.
Are you planning a trip in July?

Climate Change over Years

This is how San Sebastian climate have been changing during last 43 years period.

The climate in San Sebastian in July has not changed much over the last 43 years.

The average temperature was the lowest in 1984 (+16°C) and the highest in 2022 (+20°C). The driest year was 1989 with only 973 mm of rainfall, and the wettest year was 2019 with 4351 mm.

FAQ

Frequently asked questions about the weather in San Sebastian in July:

Is July a good time to visit San Sebastian?

It’s always a good time to visit San Sebastian, but the weather is changeable in July, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in San Sebastian in July?

July is warm in San Sebastian. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Can you swim in San Sebastian in July?

In general, you can swim in San Sebastian in July, if you want to, at an average water temperature of +21°C. But it will feel quite cool, and some precautions are necessary to ensure your comfort and safety.

Is San Sebastian rainy in July?

San Sebastian is often rainy in July. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in San Sebastian in July?

Usually, it’s not very sunny in San Sebastian in July, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Spain

Check out the weather for other cities in Spain.

Monthly weather in San Sebastian

Source of the data

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, 2023.

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.