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Santiago de Compostela in August: Weather, Average temperature and Climate

Discover the weather for Santiago de Compostela in August and if it’s a good time to travel (based on historical data).
Check flight prices to Santiago de Compostela on Avionero:
August

Weather in Santiago de Compostela in August 2025

Good Weather
Warm
☁️
Cloudy
Weather for Santiago de Compostela in August is typically good with an average maximum temperature of +75°F during the day, and approximately 9 sunny days monthly. Typically, there are about 9 rainy days with the total average precipitation that falls in August around 37 mm. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.
Good to know:
  • August is usually the hottest month of the year in Santiago de Compostela;

Average weather

☀️
+75°F
Avg. max. temperature
+46°F
Min.
+100°F
Max.
37 mm
Total precipitation
77%
Avg. humidity
2 m/s
Avg. wind
9 ☀️
Sunny Days
12 ⛅️
Cloudy
9 🌦
Rainy
Our opinion: Santiago de Compostela has good weather in August.

Average temperature in Santiago de Compostela in August

Here are the expected maximum, average and minimum temperatures in Santiago de Compostela for August based on the historical data.
Last Year
Historical Data

The expected average maximum temperature in August is +77°F with a maximum of +95°F and a minimum of +54°F.

The average maximum temperature goes up 4% by the end of the month, compared with the beginning of the month, from +75°F to +77°F.

Is Santiago de Compostela warm or cold in August?

Santiago de Compostela is typically warm in August.

Maximum temperatures go up compared to the previous month from +75°F to +75°F. The minimum temperature also goes up from +59°F to +59°F.

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

August is the hottest month in Santiago de Compostela, here is the comparison with other months:

Climate in Santiago de Compostela in August

Santiago de Compostela weather looks like this, on average, in August and the surrounding months.
JulyAugustSeptember
Avg. temperature
+75°F+75°F+73°F
Min. temperature
+46°F+46°F+41°F
Max. temperature
+100°F+100°F+100°F
Rainfall
28 mm37 mm79 mm
Wind
2 m/s2 m/s2 m/s
Humidity
77%77%79%
Air pressure
1018 HPa1018 HPa1017 HPa
Sunny days
1099
Cloudy days
12129
Rainy days
9911
Snowy days
000

August weather is still as good as in July. The temperature levels stay the same in the area of +75°F for average maximum temperature during the day. Prepare for more rain. Average rainfall goes from 28 mm to 37 mm. Humidity levels don’t change as the month goes on, averaging around 77%. The average wind speed doesn’t change much during August, staying around 2 m/s. The days becoming less sunny, going from 10 sunny days in July to 9 in August.

Next month (September) brings a further decline in the weather.

Wind

Wind speed in Santiago de Compostela in August based on historical data.
Last Year
Historical Data

The average wind speed is 2 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Santiago de Compostela is gradually decreasing during August, going from 2 m/s to 1 m/s over the course of the month.

Rain

Amount of rainfall in mm during August in Santiago de Compostela based on historical data.
Last Year
Historical Data
Total precipitation in August is about 17 mm, with a 32% chance of rain on a typical day. The maximum amount of rainfall per day is around 6 mm, which is considered light rain. August is a pretty wet month with over 10 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how August is compared with other months in the amount of precipitation, total mm:
Santiago de Compostela wettest month is December, where a typical day has a 55% chance of precipitation and 185 mm of rainfall per day. July, on the other hand, is the driest month with a mere 29% chance of precipitation and 28 mm of rainfall per day.

How was the weather last August in Santiago de Compostela?

This is the weather in Santiago de Compostela in August 2023:
1 August
☁️
+75°F
2 August
☁️
+71°F
3 August
☁️
+69°F
4 August
☁️
+72°F
5 August
☀️
+76°F
6 August
☀️
+76°F
7 August
☀️
+84°F
8 August
☀️
+93°F
9 August
☁️
+77°F
10 August
☁️
+80°F
11 August
☁️
+79°F
12 August
☀️
+76°F
13 August
☀️
+75°F
14 August
☀️
+76°F
15 August
☀️
+75°F
16 August
☀️
+78°F
17 August
🌫️
+75°F
18 August
☁️
+77°F
19 August
🌫️
+75°F
20 August
☀️
+78°F
21 August
☀️
+83°F
22 August
☀️
+93°F
23 August
☀️
+96°F
24 August
☁️
+78°F
25 August
☁️
+69°F
26 August
☁️
+68°F
27 August
☁️
+69°F
28 August
🌧️
+71°F
29 August
☁️
+71°F
30 August
☀️
+74°F
31 August
🌫️
+77°F
In August 2023 Santiago de Compostela had 14 sunny days, 13 cloudy days, and 1 rainy days. The average maximum temperature was +77°F, with an absolute maximum of +95°F and a minimum of +68°F. The average humidity was 79%, with a maximum of 100% and a minimum of 39%. The average wind speed was 2 m/s, with a maximum of 9 m/s and a minimum of 0 m/s.
Are you planning a trip in August?

Climate Change Over the Years

This is how Santiago de Compostela climate has changed over the last 43 years.

The climate in Santiago de Compostela in August has not changed that much over the last 43 years.

The average temperature was the lowest in 1986 (+62°F) and the highest in 2017 (+67°F). The driest year was 2004 with only 848 mm of rainfall, and the wettest year was 2023 with 2201 mm.

FAQ

Frequently asked questions about the weather in Santiago de Compostela in August:

Is August a good time to visit Santiago de Compostela?

August is a really good time to go to Santiago de Compostela. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Santiago de Compostela.

Can you sunbathe in Santiago de Compostela in August?

August is warm in Santiago de Compostela. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Is Santiago de Compostela rainy in August?

Santiago de Compostela is usually dry in August. Plan your packing around outdoor activities and exploring.

Is it sunny in Santiago de Compostela in August?

Usually, it’s not very sunny in Santiago de Compostela in August, 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 Santiago de Compostela

Source of the data

For this page, we’ve looked at the typical weather in Santiago de Compostela, 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.