Santiago de Compostela Weather in May
Average highs run from 17°C on May 1 to 22°C on May 31, and lows from 8°C to 11°C. Normal precipitation for the month is 120 mm over about 12 wet days.
May day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
May at a glance
- Average high
- 20°C
- Average low
- 9°C
- Precipitation
- 120 mm
- Record high
- 34°CMay 29, 2001
- Record low
- -2°CMay 3, 1967
- Daylight
- 14 h 07 min to 15 h 06 min
- Cloud cover
- 69%
- Humidity
- 81%
- Dew point
- 10°C
- Wind
- 10.1 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| May 1 | 17°C | 8°C | 30°C 1997 | 0°C 1951 | 49% |
| May 2 | 18°C | 8°C | 30°C 1958 | 0°C 1945 | 48% |
| May 3 | 19°C | 8°C | 28°C 1989 | -2°C 1967 | 47% |
| May 4 | 18°C | 8°C | 30°C 2016 | 1°C 1977 | 47% |
| May 5 | 19°C | 8°C | 29°C 1989 | 3°C 1982 | 47% |
| May 6 | 19°C | 8°C | 30°C 1989 | 1°C 1982 | 47% |
| May 7 | 19°C | 8°C | 29°C 1989 | 2°C 1970 | 47% |
| May 8 | 18°C | 9°C | 29°C 1965 | 1°C 1974 | 45% |
| May 9 | 18°C | 9°C | 29°C 1965 | 1°C 1951 | 44% |
| May 10 | 18°C | 8°C | 33°C 1965 | 0°C 1982 | 44% |
| May 11 | 18°C | 9°C | 34°C 1965 | 1°C 1951 | 44% |
| May 12 | 18°C | 8°C | 31°C 1979 | 4°C 1992 | 44% |
| May 13 | 19°C | 8°C | 32°C 1979 | 3°C 1951 | 43% |
| May 14 | 18°C | 9°C | 32°C 1979 | 3°C 1951 | 43% |
| May 15 | 19°C | 9°C | 32°C 1964 | 3°C 1947 | 42% |
| May 16 | 20°C | 9°C | 32°C 1964 | 3°C 1949 | 42% |
| May 17 | 20°C | 9°C | 30°C 1992 | 4°C 1951 | 42% |
| May 18 | 19°C | 8°C | 30°C 2004 | -1°C 1972 | 42% |
| May 19 | 19°C | 8°C | 30°C 2004 | 2°C 1967 | 41% |
| May 20 | 20°C | 8°C | 29°C 2010 | 1°C 1949 | 41% |
| May 21 | 21°C | 9°C | 31°C 2010 | 2°C 1949 | 40% |
| May 22 | 21°C | 9°C | 31°C 2010 | 3°C 1946 | 40% |
| May 23 | 22°C | 9°C | 31°C 1991 | 2°C 1963 | 40% |
| May 24 | 21°C | 10°C | 33°C 2017 | 2°C 1954 | 38% |
| May 25 | 20°C | 10°C | 30°C 2011 | 3°C 2008 | 37% |
| May 26 | 20°C | 10°C | 30°C 1991 | 3°C 2008 | 37% |
| May 27 | 21°C | 9°C | 33°C 2001 | 4°C 1947 | 36% |
| May 28 | 21°C | 11°C | 33°C 2001 | 2°C 1975 | 35% |
| May 29 | 21°C | 11°C | 34°C 2001 | 3°C 1961 | 35% |
| May 30 | 21°C | 11°C | 31°C 2019 | 4°C 1948 | 35% |
| May 31 | 22°C | 11°C | 33°C 2019 | 3°C 1948 | 35% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+2).
- May 1
- sunrise 7:28 AM, sunset 9:35 PM
- May 31
- sunrise 6:59 AM, sunset 10:05 PM
Other months
Sources
Records: NOAA GHCN-Daily, station SPE00119729, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.