Christchurch Weather in September
Average highs run from 18°C on September 1 to 16°C on September 30, and lows from 15°C to 14°C. Normal precipitation for the month is 63 mm over about 12 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
- 18°C
- Average low
- 15°C
- Precipitation
- 63 mm
- Record high
- 30°CSep 7, 2023
- Record low
- -1°CSep 24, 2003
- Daylight
- 13 h 31 min to 11 h 42 min
- Cloud cover
- 63%
- Humidity
- 82%
- Dew point
- 13°C
- Wind
- 23.8 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 | 18°C | 15°C | 26°C 2024 | 4°C 1989 | 32% |
| Sep 2 | 18°C | 15°C | 26°C 1990 | 4°C 1985 | 30% |
| Sep 3 | 18°C | 15°C | 27°C 1991 | 2°C 1989 | 30% |
| Sep 4 | 18°C | 15°C | 28°C 2023 | 2°C 1986 | 31% |
| Sep 5 | 18°C | 15°C | 29°C 2023 | 2°C 1993 | 33% |
| Sep 6 | 18°C | 15°C | 28°C 2023 | 2°C 1984 | 34% |
| Sep 7 | 18°C | 15°C | 30°C 2023 | 2°C 1985 | 34% |
| Sep 8 | 18°C | 15°C | 28°C 2023 | 3°C 2013 | 35% |
| Sep 9 | 18°C | 15°C | 29°C 2023 | 3°C 1990 | 35% |
| Sep 10 | 18°C | 15°C | 26°C 2023 | 1°C 1986 | 34% |
| Sep 11 | 18°C | 15°C | 24°C 1999 | 3°C 1986 | 34% |
| Sep 12 | 18°C | 15°C | 24°C 2022 | 4°C 2024 | 33% |
| Sep 13 | 18°C | 15°C | 26°C 2002 | 1°C 2024 | 34% |
| Sep 14 | 18°C | 15°C | 24°C 2002 | 1°C 1979 | 34% |
| Sep 15 | 18°C | 15°C | 23°C 2003 | 2°C 1979 | 34% |
| Sep 16 | 18°C | 15°C | 26°C 1982 | 3°C 1975 | 35% |
| Sep 17 | 17°C | 15°C | 27°C 1982 | 0°C 1979 | 37% |
| Sep 18 | 17°C | 15°C | 24°C 2024 | 1°C 1994 | 38% |
| Sep 19 | 17°C | 15°C | 25°C 2024 | 1°C 1991 | 37% |
| Sep 20 | 17°C | 14°C | 23°C 1998 | 1°C 1986 | 36% |
| Sep 21 | 17°C | 14°C | 24°C 2006 | 3°C 1975 | 37% |
| Sep 22 | 17°C | 14°C | 21°C 2010 | 1°C 1982 | 38% |
| Sep 23 | 17°C | 14°C | 23°C 2000 | 0°C 1979 | 40% |
| Sep 24 | 17°C | 14°C | 23°C 2021 | -1°C 2003 | 42% |
| Sep 25 | 17°C | 14°C | 21°C 1998 | 2°C 2014 | 44% |
| Sep 26 | 17°C | 14°C | 22°C 1985 | 1°C 1993 | 46% |
| Sep 27 | 17°C | 14°C | 22°C 1985 | 1°C 1987 | 46% |
| Sep 28 | 17°C | 14°C | 22°C 2014 | 1°C 2007 | 47% |
| Sep 29 | 17°C | 14°C | 24°C 2011 | 0°C 1987 | 49% |
| Sep 30 | 16°C | 14°C | 24°C 1997 | -1°C 1974 | 50% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+1).
- September 1
- sunrise 6:21 AM, sunset 7:52 PM
- September 30
- sunrise 7:06 AM, sunset 6:48 PM
Other months
Sources
Records: NOAA GHCN-Daily, station UKM00003862, 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.