San Javier Weather in September
Average highs run from 20°C on September 1 to 22°C on September 30, and lows from 9°C to 10°C. Normal precipitation for the month is 81 mm over about 6 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
- 21°C
- Average low
- 9°C
- Precipitation
- 81 mm
- Record high
- 36°CSep 27, 1958
- Record low
- -3°CSep 2, 1966
- Daylight
- 11 h 26 min to 12 h 23 min
- Cloud cover
- 53%
- Humidity
- 75%
- Dew point
- 10°C
- Wind
- 16.2 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 | 20°C | 9°C | 29°C 1937 | 0°C 1944 | 27% |
| Sep 2 | 20°C | 9°C | 32°C 1935 | -3°C 1966 | 27% |
| Sep 3 | 20°C | 9°C | 33°C 1936 | -1°C 1966 | 27% |
| Sep 4 | 20°C | 9°C | 29°C 1982 | -1°C 1947 | 27% |
| Sep 5 | 20°C | 9°C | 32°C 2004 | -1°C 1949 | 26% |
| Sep 6 | 20°C | 9°C | 32°C 1995 | -1°C 1949 | 27% |
| Sep 7 | 20°C | 9°C | 31°C 1995 | 0°C 1949 | 28% |
| Sep 8 | 20°C | 9°C | 30°C 1968 | -1°C 1958 | 27% |
| Sep 9 | 21°C | 9°C | 32°C 1951 | -2°C 1952 | 26% |
| Sep 10 | 21°C | 9°C | 30°C 1986 | 1°C 1945 | 25% |
| Sep 11 | 21°C | 9°C | 32°C 1946 | 1°C 1964 | 26% |
| Sep 12 | 21°C | 9°C | 31°C 1946 | 0°C 2004 | 25% |
| Sep 13 | 21°C | 9°C | 30°C 1980 | 1°C 2005 | 25% |
| Sep 14 | 21°C | 9°C | 29°C 1964 | -1°C 1938 | 24% |
| Sep 15 | 21°C | 9°C | 31°C 1950 | 0°C 1941 | 23% |
| Sep 16 | 21°C | 9°C | 28°C 1982 | 0°C 1951 | 23% |
| Sep 17 | 21°C | 9°C | 32°C 1978 | 0°C 1966 | 22% |
| Sep 18 | 21°C | 9°C | 34°C 1938 | 0°C 1935 | 21% |
| Sep 19 | 21°C | 9°C | 34°C 1994 | 0°C 1951 | 21% |
| Sep 20 | 21°C | 9°C | 35°C 1994 | 1°C 1995 | 22% |
| Sep 21 | 22°C | 9°C | 31°C 1992 | -2°C 1941 | 21% |
| Sep 22 | 22°C | 9°C | 30°C 1951 | 1°C 1950 | 21% |
| Sep 23 | 22°C | 9°C | 35°C 1994 | 1°C 1943 | 22% |
| Sep 24 | 22°C | 10°C | 29°C 1944 | 1°C 1941 | 23% |
| Sep 25 | 22°C | 10°C | 30°C 1945 | 1°C 1941 | 24% |
| Sep 26 | 22°C | 10°C | 31°C 1958 | 0°C 1941 | 25% |
| Sep 27 | 22°C | 10°C | 36°C 1958 | 2°C 1989 | 27% |
| Sep 28 | 22°C | 10°C | 34°C 1958 | 2°C 1941 | 28% |
| Sep 29 | 22°C | 10°C | 36°C 1944 | 2°C 1961 | 29% |
| Sep 30 | 22°C | 10°C | 33°C 1940 | 1°C 1951 | 29% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-3).
- September 1
- sunrise 7:10 AM, sunset 6:36 PM
- September 30
- sunrise 6:31 AM, sunset 6:54 PM
Other months
Sources
Records: NOAA GHCN-Daily, station UY000086430, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.