Santa Cruz Weather in September
Average highs run from 29°C on September 1 to 29°C on September 30, and lows from 24°C to 24°C. Normal precipitation for the month is 420 mm over about 27 wet days.
September day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 29°C
- Average low
- 24°C
- Precipitation
- 420 mm
- Record high
- 37°CSep 25, 1987
- Record low
- 21°CSep 2, 1971
- Daylight
- 12 h 25 min to 12 h 01 min
- Cloud cover
- 83%
- Humidity
- 89%
- Dew point
- 24°C
- Wind
- 10.4 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 |
|---|---|---|---|---|---|
| Sep 1 | 29°C | 24°C | 36°C 1964 | 22°C 1967 | 93% |
| Sep 2 | 29°C | 24°C | 34°C 1964 | 21°C 1971 | 93% |
| Sep 3 | 29°C | 24°C | 35°C 1983 | 22°C 1967 | 94% |
| Sep 4 | 29°C | 24°C | 36°C 1988 | 22°C 1967 | 94% |
| Sep 5 | 29°C | 24°C | 36°C 1979 | 22°C 1977 | 94% |
| Sep 6 | 29°C | 24°C | 36°C 1964 | 22°C 1967 | 94% |
| Sep 7 | 29°C | 24°C | 35°C 1986 | 22°C 1963 | 94% |
| Sep 8 | 29°C | 24°C | 35°C 1972 | 22°C 1971 | 94% |
| Sep 9 | 29°C | 24°C | 35°C 1981 | 23°C 1966 | 94% |
| Sep 10 | 29°C | 24°C | 35°C 1981 | 23°C 1972 | 95% |
| Sep 11 | 29°C | 24°C | 36°C 1986 | 21°C 1971 | 95% |
| Sep 12 | 29°C | 24°C | 35°C 1979 | 22°C 1971 | 95% |
| Sep 13 | 29°C | 24°C | 35°C 1986 | 22°C 1971 | 95% |
| Sep 14 | 29°C | 24°C | 36°C 1964 | 23°C 1961 | 95% |
| Sep 15 | 29°C | 24°C | 35°C 1983 | 22°C 1975 | 96% |
| Sep 16 | 29°C | 24°C | 35°C 1988 | 22°C 1970 | 96% |
| Sep 17 | 29°C | 24°C | 35°C 1988 | 23°C 1978 | 96% |
| Sep 18 | 29°C | 24°C | 35°C 1988 | 22°C 1964 | 95% |
| Sep 19 | 29°C | 24°C | 34°C 1974 | 22°C 1966 | 94% |
| Sep 20 | 29°C | 24°C | 36°C 1983 | 22°C 1971 | 95% |
| Sep 21 | 29°C | 24°C | 36°C 1983 | 22°C 1985 | 94% |
| Sep 22 | 29°C | 24°C | 36°C 1987 | 22°C 1985 | 94% |
| Sep 23 | 29°C | 24°C | 35°C 1987 | 22°C 1976 | 94% |
| Sep 24 | 29°C | 24°C | 36°C 1987 | 22°C 1971 | 94% |
| Sep 25 | 29°C | 24°C | 37°C 1987 | 23°C 1971 | 94% |
| Sep 26 | 29°C | 24°C | 37°C 1987 | 22°C 1976 | 93% |
| Sep 27 | 29°C | 24°C | 36°C 1987 | 22°C 1978 | 92% |
| Sep 28 | 29°C | 24°C | 36°C 1987 | 21°C 1978 | 90% |
| Sep 29 | 29°C | 24°C | 35°C 1987 | 22°C 1978 | 89% |
| Sep 30 | 29°C | 24°C | 34°C 1984 | 22°C 1964 | 88% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+8).
- September 1
- sunrise 5:45 AM, sunset 6:10 PM
- September 30
- sunrise 5:47 AM, sunset 5:48 PM
Other months
Sources
Records: NOAA GHCN-Daily, station RPW00041231, 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 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.