Den Helder Weather in September
Average highs run from 19°C on September 1 to 17°C on September 30, and lows from 13°C to 11°C. Normal precipitation for the month is 92 mm over about 15 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
- 12°C
- Precipitation
- 92 mm
- Record high
- 32°CSep 5, 1949
- Record low
- 1°CSep 30, 1928
- Daylight
- 13 h 39 min to 11 h 40 min
- Cloud cover
- 76%
- Humidity
- 82%
- Dew point
- 13°C
- Wind
- 22.7 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 | 19°C | 13°C | 27°C 1991 | 4°C 1919 | 50% |
| Sep 2 | 20°C | 13°C | 29°C 1906 | 5°C 1928 | 49% |
| Sep 3 | 20°C | 13°C | 30°C 1906 | 4°C 1923 | 49% |
| Sep 4 | 20°C | 14°C | 25°C 1949 | 3°C 1923 | 48% |
| Sep 5 | 20°C | 13°C | 32°C 1949 | 6°C 1907 | 49% |
| Sep 6 | 19°C | 13°C | 29°C 2023 | 6°C 1921 | 48% |
| Sep 7 | 19°C | 13°C | 28°C 2023 | 6°C 1965 | 48% |
| Sep 8 | 19°C | 13°C | 28°C 2023 | 6°C 1923 | 48% |
| Sep 9 | 19°C | 13°C | 27°C 2012 | 5°C 1923 | 49% |
| Sep 10 | 19°C | 13°C | 29°C 2023 | 5°C 1925 | 48% |
| Sep 11 | 19°C | 13°C | 29°C 1999 | 3°C 1925 | 47% |
| Sep 12 | 19°C | 13°C | 28°C 2006 | 5°C 1986 | 46% |
| Sep 13 | 18°C | 12°C | 30°C 2016 | 3°C 1920 | 44% |
| Sep 14 | 19°C | 12°C | 29°C 2016 | 3°C 1925 | 45% |
| Sep 15 | 18°C | 12°C | 27°C 2016 | 2°C 1925 | 44% |
| Sep 16 | 18°C | 12°C | 28°C 1947 | 4°C 1971 | 44% |
| Sep 17 | 18°C | 12°C | 24°C 1934 | 5°C 1952 | 44% |
| Sep 18 | 18°C | 11°C | 25°C 2003 | 3°C 1919 | 43% |
| Sep 19 | 18°C | 12°C | 25°C 1926 | 5°C 1952 | 44% |
| Sep 20 | 18°C | 11°C | 27°C 1926 | 4°C 1972 | 44% |
| Sep 21 | 18°C | 11°C | 25°C 2006 | 4°C 1937 | 44% |
| Sep 22 | 18°C | 12°C | 26°C 1989 | 2°C 1932 | 45% |
| Sep 23 | 17°C | 11°C | 24°C 1938 | 2°C 1937 | 46% |
| Sep 24 | 17°C | 11°C | 25°C 1949 | 3°C 1907 | 48% |
| Sep 25 | 17°C | 11°C | 24°C 1965 | 2°C 1924 | 48% |
| Sep 26 | 17°C | 11°C | 23°C 1967 | 2°C 1928 | 50% |
| Sep 27 | 17°C | 11°C | 24°C 1907 | 2°C 1928 | 52% |
| Sep 28 | 17°C | 12°C | 23°C 1934 | 1°C 1939 | 54% |
| Sep 29 | 17°C | 12°C | 25°C 2011 | 3°C 1925 | 54% |
| Sep 30 | 17°C | 11°C | 25°C 2011 | 1°C 1928 | 55% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+2).
- September 1
- sunrise 6:51 AM, sunset 8:30 PM
- September 30
- sunrise 7:40 AM, sunset 7:20 PM
Other months
Sources
Records: NOAA GHCN-Daily, station NLM00006235, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.