Sant Joan Despí Weather in September
Average highs run from 28°C on September 1 to 25°C on September 30, and lows from 20°C to 17°C. Normal precipitation for the month is 89 mm over about 9 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
- 26°C
- Average low
- 18°C
- Precipitation
- 89 mm
- Record high
- 34°CSep 17, 1926
- Record low
- 8°CSep 30, 1974
- Daylight
- 13 h 07 min to 11 h 49 min
- Cloud cover
- 56%
- Humidity
- 69%
- Dew point
- 14°C
- Wind
- 11.2 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 |
|---|---|---|---|---|---|
| Sep 1 | 28°C | 20°C | 32°C 2016 | 12°C 1938 | 27% |
| Sep 2 | 27°C | 20°C | 32°C 1927 | 11°C 1965 | 28% |
| Sep 3 | 27°C | 20°C | 31°C 1926 | 10°C 1965 | 28% |
| Sep 4 | 27°C | 20°C | 31°C 2006 | 11°C 1976 | 28% |
| Sep 5 | 27°C | 20°C | 32°C 2016 | 13°C 1924 | 28% |
| Sep 6 | 28°C | 19°C | 31°C 2016 | 13°C 1984 | 30% |
| Sep 7 | 27°C | 20°C | 31°C 1927 | 10°C 1963 | 29% |
| Sep 8 | 28°C | 19°C | 33°C 1994 | 12°C 1963 | 28% |
| Sep 9 | 27°C | 19°C | 32°C 2004 | 12°C 1963 | 27% |
| Sep 10 | 27°C | 19°C | 32°C 2004 | 11°C 1938 | 28% |
| Sep 11 | 27°C | 19°C | 32°C 2004 | 11°C 1976 | 28% |
| Sep 12 | 27°C | 19°C | 33°C 1926 | 12°C 1965 | 29% |
| Sep 13 | 27°C | 18°C | 33°C 2022 | 13°C 1958 | 28% |
| Sep 14 | 26°C | 18°C | 32°C 1956 | 10°C 1976 | 28% |
| Sep 15 | 26°C | 18°C | 31°C 1950 | 10°C 1972 | 29% |
| Sep 16 | 26°C | 18°C | 32°C 1926 | 10°C 1976 | 30% |
| Sep 17 | 26°C | 18°C | 34°C 1926 | 11°C 1960 | 30% |
| Sep 18 | 25°C | 18°C | 32°C 1926 | 11°C 2001 | 30% |
| Sep 19 | 26°C | 17°C | 33°C 1926 | 12°C 1969 | 30% |
| Sep 20 | 25°C | 17°C | 30°C 1925 | 12°C 1969 | 30% |
| Sep 21 | 25°C | 18°C | 31°C 2004 | 12°C 1977 | 29% |
| Sep 22 | 25°C | 18°C | 32°C 1926 | 10°C 1979 | 29% |
| Sep 23 | 25°C | 17°C | 31°C 1926 | 9°C 1977 | 29% |
| Sep 24 | 25°C | 17°C | 32°C 1926 | 9°C 1979 | 29% |
| Sep 25 | 25°C | 17°C | 30°C 1926 | 9°C 1924 | 28% |
| Sep 26 | 25°C | 16°C | 31°C 1927 | 10°C 1924 | 26% |
| Sep 27 | 24°C | 16°C | 30°C 1926 | 10°C 1924 | 25% |
| Sep 28 | 24°C | 16°C | 28°C 1946 | 10°C 1981 | 26% |
| Sep 29 | 25°C | 16°C | 31°C 1926 | 8°C 1974 | 26% |
| Sep 30 | 25°C | 17°C | 29°C 1948 | 8°C 1974 | 23% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+2).
- September 1
- sunrise 7:18 AM, sunset 8:25 PM
- September 30
- sunrise 7:47 AM, sunset 7:36 PM
Other months
Sources
Records: NOAA GHCN-Daily, station SP000008181, 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.