Santiago de Compostela Weather in May
During May, Santiago de Compostela experiences pleasant daytime temperatures of 19°C (66°F) and cooler nights around 10°C (50°F). Expect quite a bit of rainfall. Around 108 mm (4.3 in) is typical.
Rainfall in Santiago de Compostela in May
You can expect rain on roughly 16 days based on historical data, averaging 108 mm (4.3 in) for the month. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.
Temperature in Santiago de Compostela in May
Daytime highs in Santiago de Compostela in May reach 19°C (66°F), with nights around 10°C (50°F). Conditions are often most pleasant around the middle of the day. With overnight lows of 10°C (50°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Santiago de Compostela in May
The month experiences a moderate amount of sunlight, with 189 hours of sunshine. This provides a nice balance between sunshine and clouds.If your ideal day consists of dry skies and pleasant temperatures, June, July, August and September typically offer the best circumstances for Santiago de Compostela.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Spain, check out our Santiago de Compostela's climate page.
Santiago de Compostela Temperature in May
Min Temperature
10°C (50°F)
Max Temperature
19°C (66°F)
Chance of Rain
55%
Precipitation
108 mm (4.3 in)
Rainy days
16 days
Humidity
76%
Sunshine
189 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Santiago de Compostela typically rise from around 17°C (63°F) at the start of May to approximately 20°C (68°F) by the end. Nights are cool, with lows typically ranging from 7°C (45°F) to 11°C (52°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Santiago de Compostela in May
Browse day-by-day weather records for Santiago de Compostela spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Santiago de Compostela historical weather extremes in May
The extremes listed below come from historical weather data collected in Santiago de Compostela from 1976 through 2026.
- The hottest May day on record in Santiago de Compostela reached 33°C (91°F) (May 27, 2001).
- The lowest daytime temperature in May was 8°C (46°F), recorded on May 3, 1977.
- Nighttime temperatures dropped to 1°C (34°F) on May 2, 2021, marking the coldest May night on record.
- The heaviest May precipitation occurred on May 7, 2000, when 74 mm (2.9 in) of precipitation fell.
Best Places in Spain in May
Find out more about the weather in Spain and which places have the best travel conditions in this month. See all of Spain in May →
perfect weather
pleasant
tolerable
unpleasant
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What to Wear in Santiago de Compostela in May
Pleasant temperatures in May mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Santiago de Compostela in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Spain, check out our Santiago de Compostela's climate page.
Temperature Rainfall Sunshine Humidity
See the full Santiago de Compostela climate overview or explore weather in Spain.
