Weather in Santiago de Compostela in August 2025
- August is usually the hottest month of the year in Santiago de Compostela;
Average weather
Average temperature in Santiago de Compostela in August
Going from a maximum of +35°C during the day to a minimum of +12°C during the night, the temperature in August averages around +25°C.
The average maximum temperature goes up 4% by the end of the month, compared with the beginning of the month, from +24°C to +25°C.
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 +24°C to +24°C. The minimum temperature also goes up from +15°C to +15°C.
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
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +24°C | +24°C | +23°C | ||||
| Min. temperature | ||||||
| +8°C | +8°C | +5°C | ||||
| Max. temperature | ||||||
| +38°C | +38°C | +38°C | ||||
| Rainfall | ||||||
| 28 mm | 37 mm | 79 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 77% | 77% | 79% | ||||
| Air pressure | ||||||
| 1018 HPa | 1018 HPa | 1017 HPa | ||||
| Sunny days | ||||||
| 10 | 9 | 9 | ||||
| Cloudy days | ||||||
| 12 | 12 | 9 | ||||
| Rainy days | ||||||
| 9 | 9 | 11 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as good as in July. The temperature levels stay the same in the area of +24°C 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
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
How was the weather last August in Santiago de Compostela?
Climate Change over Years
The climate in Santiago de Compostela in August has not changed much over the last 43 years.
The average temperature was the lowest in 1986 (+17°C) and the highest in 2017 (+19°C). The driest year was 2004 with only 848 mm of rainfall, and the wettest year was 2023 with 2201 mm.
FAQ
Is August a good time to visit Santiago de Compostela?
Can you sunbathe in Santiago de Compostela in August?
Is Santiago de Compostela rainy in August?
Is it sunny in Santiago de Compostela in August?
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.