Santa Cruz Weather in May
Average highs run from 23°C on May 1 to 18°C on May 31, and lows from 10°C to 8°C. Normal precipitation for the month is 73 mm over about 7 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
- 73 mm
- Record high
- 28°CMay 17, 1967
- Record low
- -9°CMay 21, 1976
- Daylight
- 10 h 42 min to 10 h 00 min
- Cloud cover
- 60%
- Humidity
- 61%
- Dew point
- 5°C
- Wind
- 7.2 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 | 23°C | 10°C | 26°C 1977 | 0°C 1983 | 15% |
| May 2 | 23°C | 10°C | 24°C 1976 | 1°C 1992 | 14% |
| May 3 | 22°C | 10°C | 24°C 1958 | 1°C 1987 | 15% |
| May 4 | 22°C | 10°C | 24°C 2014 | -3°C 1973 | 15% |
| May 5 | 22°C | 10°C | 24°C 1996 | 0°C 1985 | 15% |
| May 6 | 22°C | 10°C | 21°C 2020 | -3°C 1973 | 15% |
| May 7 | 22°C | 10°C | 26°C 1978 | -1°C 1988 | 15% |
| May 8 | 22°C | 10°C | 23°C 1989 | -2°C 1965 | 16% |
| May 9 | 22°C | 10°C | 24°C 1998 | -1°C 1965 | 16% |
| May 10 | 21°C | 10°C | 24°C 2020 | -2°C 1966 | 17% |
| May 11 | 21°C | 10°C | 22°C 1991 | -3°C 1994 | 17% |
| May 12 | 21°C | 10°C | 23°C 1978 | 0°C 1994 | 18% |
| May 13 | 20°C | 10°C | 22°C 1977 | -2°C 1984 | 19% |
| May 14 | 20°C | 9°C | 22°C 1974 | -2°C 2013 | 19% |
| May 15 | 20°C | 9°C | 22°C 1985 | -3°C 1968 | 20% |
| May 16 | 20°C | 9°C | 20°C 2020 | -3°C 1968 | 21% |
| May 17 | 20°C | 9°C | 28°C 1967 | -5°C 1976 | 22% |
| May 18 | 19°C | 9°C | 21°C 2015 | 0°C 1995 | 22% |
| May 19 | 19°C | 9°C | 21°C 1998 | -2°C 1958 | 23% |
| May 20 | 19°C | 9°C | 23°C 2015 | -3°C 1976 | 25% |
| May 21 | 19°C | 9°C | 20°C 2025 | -9°C 1976 | 27% |
| May 22 | 19°C | 9°C | 24°C 1975 | -3°C 1976 | 28% |
| May 23 | 18°C | 9°C | 22°C 1980 | -2°C 1958 | 28% |
| May 24 | 18°C | 9°C | 19°C 1977 | -4°C 1958 | 28% |
| May 25 | 18°C | 9°C | 21°C 1968 | -4°C 1958 | 28% |
| May 26 | 18°C | 9°C | 22°C 1982 | -4°C 1958 | 28% |
| May 27 | 18°C | 9°C | 19°C 2020 | -7°C 1958 | 28% |
| May 28 | 18°C | 8°C | 23°C 2020 | -2°C 1966 | 28% |
| May 29 | 18°C | 8°C | 18°C 1975 | -1°C 1984 | 30% |
| May 30 | 18°C | 8°C | 19°C 1981 | -2°C 1979 | 30% |
| May 31 | 18°C | 8°C | 21°C 1966 | -2°C 1996 | 30% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-4).
- May 1
- sunrise 7:21 AM, sunset 6:03 PM
- May 31
- sunrise 7:43 AM, sunset 5:43 PM
Other months
Sources
Records: NOAA GHCN-Daily, station CI000085629, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine, and temperature and precipitation: 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 2026-09-27. Sun and moon: computed with the NOAA solar equations and Meeus.