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Weather in Santiago de Compostela for September 2025

Your guide to Santiago de Compostela weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Santiago de Compostela is slightly cooler than the historical average by -1.5 °C.

  • The forecast for the next days in Santiago de Compostela predicts temperatures to be around 23 °C, close to the historical average.

  • In general, the average temperature in Santiago de Compostela at the beginning of September is 22.9 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 22.1 °C by the end of September.

    • Rain 🌧️

  • Santiago de Compostela in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 148.5 mm.

    • More

  • Is September a good time to visit Santiago de Compostela? check out the best time to travel to Santiago de Compostela page.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
11
Dry days
Average rainy days
19
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/12°
Temperatures
Average wind speed
11 km/h
Avg max wind
Average humidity
77 %
Avg humidity

Santiago de Compostela Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Torrential rain shower
22°
2
Fog
21°
3
Fog
24°
4
Light rain shower
23°
5
Patchy light drizzle
24°
6
Thundery outbreaks possible
23°
7
Mist
23°
8
Fog
23°
9
Fog
22°
10
Patchy light rain with thunder
23°
11
Light rain shower
22°
12
Patchy rain possible
22°
13
Fog
23°
14
Fog
27°
15
Patchy rain possible
21°
16
Partly cloudy
29°
17
Sunny
30°
18
Sunny
31°
19
Patchy rain possible
30°
20
Patchy rain possible
19°
21
Patchy rain possible
18°
22
Partly cloudy
17°
23
Patchy rain possible
17°
24
Cloudy
22°
25
Patchy rain possible
22°
26
Overcast
22°
27
Patchy rain possible
23°
28
Patchy rain possible
17°
29
Fog
23°
30
Sunny
26°

Temperatures trend during September in Santiago de Compostela

See the weather trend as well as the moving average line

September weather in Santiago de Compostela day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Torrential rain shower
Torrential rain shower
 22° /12° 14.4 mm 5
2 Sept. Fog
Fog
 21° /11° 0.9 mm 5
3 Sept. Fog
Fog
 24° /11° 0.8 mm 5
4 Sept. Light rain shower
Light rain shower
 23° /11° 3 mm 5
5 Sept. Patchy light drizzle
Patchy light drizzle
 24° /11° 1.7 mm 5
6 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 23° /10° 2.7 mm 5
7 Sept. Mist
Mist
 23° /11° 2.7 mm 5
8 Sept. Fog
Fog
 23° /10° 10.2 mm 5
9 Sept. Fog
Fog
 22° /11° 3 mm 5
10 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 23° /12° 3.6 mm 5
11 Sept. Light rain shower
Light rain shower
 22° /11° 2 mm 5
12 Sept. Patchy rain possible
Patchy rain possible
 22° /11° 0.2 mm 5
13 Sept. Fog
Fog
 23° /10° 0 mm 6
14 Sept. Fog
Fog
 27° /12° 0 mm 6
15 Sept. Patchy rain possible
Patchy rain possible
 21° /11° 0.7 mm 1.1
16 Sept. Partly cloudy
Partly cloudy
 29° /9° 0 mm 1.4
17 Sept. Sunny
Sunny
 30° /12° 0 mm 1.4
18 Sept. Sunny
Sunny
 31° /13° 0 mm 1.5
19 Sept. Patchy rain possible
Patchy rain possible
 30° /13° 0.9 mm 1.1
20 Sept. Patchy rain possible
Patchy rain possible
 19° /10° 0.3 mm 3
21 Sept. Patchy rain possible
Patchy rain possible
 18° /8° 0.1 mm 3
22 Sept. Partly cloudy
Partly cloudy
 17° /8° 0 mm 4
23 Sept. Patchy rain possible
Patchy rain possible
 17° /8° 0 mm 3
24 Sept. Cloudy
Cloudy
 22° /6° 0.1 mm 3
25 Sept. Patchy rain possible
Patchy rain possible
 22° /11° 0.1 mm 4
26 Sept. Overcast
Overcast
 22° /9° 0 mm 3
27 Sept. Patchy rain possible
Patchy rain possible
 23° /13° 1 mm 4
28 Sept. Patchy rain possible
Patchy rain possible
 17° /15° 1.1 mm 4
29 Sept. Fog
Fog
 23° /12° 0.2 mm 5
30 Sept. Sunny
Sunny
 26° /14° 0.3 mm 7
Next
Important Notice
Our weather forecast for Santiago de Compostela in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Santiago de Compostela forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Santiago de Compostela weather in September vs August vs October

Compare September weather in Santiago de Compostela with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
AugustSeptemberOctober
WeatherCloudy
Cloudy
Cloudy
Cloudy
Patchy rain possible
Patchy rain possible
Temperatures26°/13°23°/12°19°/11°
Rainfall14 mm149 mm241 mm
Wind12.7 km/h11.1 km/h11.7 km/h
Humidity71%77%83%
Rainy days5 days19 days27 days
Dry days26 days11 days4 days

Planning a trip to Santiago de Compostela? Discover the best time to visit

Santiago de Compostela in September - FAQ

What are the expected maximum and minimum temperatures in Santiago de Compostela during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Santiago de Compostela during September?
Significant rainfall exceeding 148.5 mm is expected in Santiago de Compostela during September, occurring over more than 19 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Santiago de Compostela during September?
The average wind speed in Santiago de Compostela during September is 11 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Santiago de Compostela in September?

As you prepare for your trip to Santiago de Compostela in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Santiago de Compostela, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Warm Clothing: Sweaters, hoodies, long pants
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
  • Accessories
    • Sunglasses: For sun protection
    • Sun Hats: Wide-brimmed hats for sun protection in warm weather
    • Scarves: To protect you from the cold wind
    • Gloves/Mittens: Essential for cold weather
    • Warm Hats: Warm hats for insulation in cold weather
    • Umbrellas/Raincoats: For rainy days

September rainfall patterns in Santiago de Compostela

Explore the daily rainfall trends and prepare for Santiago de Compostelas September weather 💧

UV exposure in Santiago de Compostela during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Get accurate weather forecasts for Santiago de Compostela, located at latitude 42.881 and longitude -8.546. Stay updated with localized weather information tailored for Santiago de Compostela.

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