Santiago de Compostela Temperature by Month
Santiago de Compostela in Galicia, Spain sees significant seasonal temperature differences, with daytime highs between 13°C (55°F) in February and 25°C (77°F) in August, averaging 18°C (64°F) annually. Explore the full monthly breakdown below.
Santiago de Compostela Monthly Temperatures
The climate in Santiago de Compostela is dynamic, ranging widely from moderate in winter to comfortable in summer. Nights are significantly colder, with lows dropping from 15°C (59°F) in August to 6°C (43°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Santiago de Compostela by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. August, the warmest month, averages 236 hours of sunshine.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in June
Historical Santiago de Compostela Temperatures: 1976-2026
Browse day-by-day temperature records for Santiago de Compostela spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Santiago de Compostela vs Spain
The map below shows the annual temperature across Spain. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Santiago de Compostela vs World: Temperature Compared
Santiago de Compostela's average annual maximum temperature is 18°C (64°F). To put that in context, here's how it compares to a few well-known destinations:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
Glasgow, Scotland averages 13°C (55°F) a year — mild but often grey, with cold winters and rarely hot summers.
Chicago, USA averages 15°C (59°F) annually — known for extreme seasonal swings, from bitterly cold winters to warm summers.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
What Does the Temperature Feel Like in Santiago de Compostela?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Santiago de Compostela, February is the coolest month, with average highs of 14°C (57°F) and humidity around 78% — considered high. In August, the warmest month, temperatures average 25°C (77°F) with 74% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Santiago de Compostela this rarely lasts long on the ground.
For more on Santiago de Compostela's weather — including monthly rainfall, sunshine hours, and humidity — visit our Santiago de Compostela climate page.
