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

Planning a trip and want to know what the weather in Santiago de Compostela in December will be like? Take a look at our weather guide for Santiago de Compostela, based on historical data.
Check flight prices to Santiago de Compostela on Avionero:
December

Weather in Santiago de Compostela in December 2024

Uncomfortable Weather
Mild
🌧️
Rainy
If you are thinking of traveling to Santiago de Compostela in December, think and plan carefully. The average daytime high temperature is usually around +13°C, and there are only about 7 sunny days in total throughout the whole month. Pack for extremes to ensure that you are as comfortable as possible. Search flights in one click on Avionero.
Good to know:
  • December is usually the wettest month of the year in Santiago de Compostela;

Average weather

☀️
+13°C
Avg. max. temperature
-5°C
Min.
+22°C
Max.
185 mm
Total precipitation
86%
Avg. humidity
2 m/s
Avg. wind
7 ☀️
Sunny Days
6 ⛅️
Cloudy
17 🌦
Rainy
Our opinion: Santiago de Compostela has uncomfortable weather in December.

Average temperature in Santiago de Compostela in December

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

Going from a maximum of +17°C during the day to a minimum of -1°C during the night, the temperature in December averages around +13°C.

The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +11°C to +11°C.

Is Santiago de Compostela warm or cold in December?

Santiago de Compostela is typically mild in December.

Maximum temperatures go down compared to the previous month from +15°C to +13°C. The minimum temperature also goes down from +8°C to +7°C.

Pack a light jacket as it will be warm in the day and cool in the evenings.

December is one of the coolest months in Santiago de Compostela, here is the comparison with other months:

Climate in Santiago de Compostela in December

Santiago de Compostela weather looks like this, on average, in December and the surrounding months.
NovemberDecemberJanuary
Avg. temperature
+15°C+13°C+12°C
Min. temperature
-1°C-5°C-4°C
Max. temperature
+23°C+22°C+20°C
Rainfall
166 mm185 mm163 mm
Wind
2 m/s2 m/s2 m/s
Humidity
86%86%86%
Air pressure
1017 HPa1019 HPa1020 HPa
Sunny days
676
Cloudy days
768
Rainy days
171716
Snowy days
000

December weather is still as bad as in November. It’s getting colder in December. From +15°C in the day, the average maximum temperature lowers to +13°C. Prepare for more rain. Average rainfall goes from 166 mm to 185 mm. Humidity levels don’t change as the month goes on, averaging around 86%. The average wind speed doesn’t change much during December, staying around 2 m/s. The good news is there are likely to be more sunny days in December, from 6 to 7.

January brings much the same weather, it remains bad.

Wind

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

The average wind speed is 3 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.

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

Rain

Amount of rainfall in mm during December in Santiago de Compostela based on historical data.
Last Year
Historical Data
Typically, there is a 52% chance of rain on an average day in December, with total rainfall of approximately 153 mm. The maximum amount of rainfall per day is around 31 mm, which is moderate rain. December is a pretty wet month with over 16 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
December is one of the rainiest months in Santiago de Compostela, here is a comparison with other months, 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 December in Santiago de Compostela?

This is the weather in Santiago de Compostela in December 2023:
1 December
🌧️
+11°C
2 December
🌫️
+11°C
3 December
🌧️
+12°C
4 December
🌧️
+12°C
5 December
🌫️
+9°C
6 December
☀️
+10°C
7 December
🌧️
+15°C
8 December
🌧️
+13°C
9 December
🌧️
+16°C
10 December
🌧️
+17°C
11 December
🌧️
+16°C
12 December
🌧️
+15°C
13 December
🌧️
+12°C
14 December
🌫️
+12°C
15 December
☀️
+15°C
16 December
☀️
+14°C
17 December
🌫️
+13°C
18 December
🌫️
+10°C
19 December
🌫️
+10°C
20 December
☁️
+11°C
21 December
☁️
+12°C
22 December
☁️
+13°C
23 December
☁️
+13°C
24 December
☀️
+14°C
25 December
☀️
+13°C
26 December
☁️
+12°C
27 December
🌧️
+14°C
28 December
🌧️
+12°C
29 December
🌫️
+12°C
30 December
🌫️
+12°C
31 December
☁️
+11°C
In December 2023 Santiago de Compostela had 5 sunny days, 6 cloudy days, and 12 rainy days. The average maximum temperature was +13°C, with an absolute maximum of +17°C and a minimum of +9°C. The average humidity was 89%, with a maximum of 100% and a minimum of 65%. The average wind speed was 3 m/s, with a maximum of 10 m/s and a minimum of 0 m/s.
Are you planning a trip in December?

Climate Change over Years

This is how Santiago de Compostela climate have been changing during last 43 years period.

The climate in Santiago de Compostela in December 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

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

Is December a good time to visit Santiago de Compostela?

There is never a bad time to go to Santiago de Compostela, but the weather isn’t the best in December, so plan on enjoying the great indoor attractions of Santiago de Compostela and pack for the extremes in weather.

Can you sunbathe in Santiago de Compostela in December?

December has mild temperatures in Santiago de Compostela. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!

Is Santiago de Compostela rainy in December?

Santiago de Compostela is often rainy in December. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Santiago de Compostela in December?

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