Castricum Weather in December
Average highs run from 8°C on December 1 to 6°C on December 31, and lows from 6°C to 4°C. Normal precipitation for the month is 93 mm over about 19 wet days.
December day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
December at a glance
- Average high
- 7°C
- Average low
- 5°C
- Precipitation
- 93 mm
- Daylight
- 8 h 02 min to 7 h 44 min
- Cloud cover
- 77%
- Humidity
- 87%
- Dew point
- 4°C
- Wind
- 29.5 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 |
|---|---|---|---|---|---|
| Dec 1 | 8°C | 6°C | 54% | ||
| Dec 2 | 8°C | 6°C | 54% | ||
| Dec 3 | 8°C | 6°C | 54% | ||
| Dec 4 | 8°C | 6°C | 54% | ||
| Dec 5 | 8°C | 6°C | 54% | ||
| Dec 6 | 8°C | 6°C | 54% | ||
| Dec 7 | 8°C | 5°C | 52% | ||
| Dec 8 | 8°C | 5°C | 53% | ||
| Dec 9 | 8°C | 5°C | 53% | ||
| Dec 10 | 8°C | 5°C | 53% | ||
| Dec 11 | 8°C | 5°C | 53% | ||
| Dec 12 | 8°C | 5°C | 53% | ||
| Dec 13 | 7°C | 5°C | 53% | ||
| Dec 14 | 7°C | 5°C | 54% | ||
| Dec 15 | 7°C | 5°C | 55% | ||
| Dec 16 | 7°C | 5°C | 55% | ||
| Dec 17 | 7°C | 5°C | 55% | ||
| Dec 18 | 7°C | 5°C | 56% | ||
| Dec 19 | 7°C | 5°C | 56% | ||
| Dec 20 | 7°C | 5°C | 56% | ||
| Dec 21 | 7°C | 5°C | 57% | ||
| Dec 22 | 7°C | 5°C | 58% | ||
| Dec 23 | 7°C | 5°C | 58% | ||
| Dec 24 | 7°C | 5°C | 57% | ||
| Dec 25 | 7°C | 5°C | 57% | ||
| Dec 26 | 7°C | 4°C | 56% | ||
| Dec 27 | 7°C | 4°C | 56% | ||
| Dec 28 | 7°C | 4°C | 56% | ||
| Dec 29 | 7°C | 4°C | 57% | ||
| Dec 30 | 7°C | 4°C | 56% | ||
| Dec 31 | 6°C | 4°C | 55% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+1).
- December 1
- sunrise 8:29 AM, sunset 4:31 PM
- December 31
- sunrise 8:52 AM, sunset 4:36 PM
Other months
Sources
Records: NOAA GHCN-Daily, station NLE00101879, 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.