Castricum Weather in April
Average highs run from 9°C on April 1 to 12°C on April 30, and lows from 6°C to 8°C. Normal precipitation for the month is 45 mm over about 9 wet days.
April day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
April at a glance
- Average high
- 10°C
- Average low
- 7°C
- Precipitation
- 45 mm
- Daylight
- 13 h 00 min to 14 h 54 min
- Cloud cover
- 68%
- Humidity
- 84%
- Dew point
- 6°C
- Wind
- 21.2 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 |
|---|---|---|---|---|---|
| Apr 1 | 9°C | 6°C | 37% | ||
| Apr 2 | 9°C | 6°C | 36% | ||
| Apr 3 | 9°C | 6°C | 36% | ||
| Apr 4 | 9°C | 6°C | 35% | ||
| Apr 5 | 9°C | 6°C | 35% | ||
| Apr 6 | 9°C | 6°C | 34% | ||
| Apr 7 | 9°C | 6°C | 35% | ||
| Apr 8 | 9°C | 6°C | 35% | ||
| Apr 9 | 9°C | 6°C | 35% | ||
| Apr 10 | 10°C | 6°C | 34% | ||
| Apr 11 | 10°C | 6°C | 34% | ||
| Apr 12 | 10°C | 6°C | 32% | ||
| Apr 13 | 10°C | 6°C | 32% | ||
| Apr 14 | 10°C | 6°C | 30% | ||
| Apr 15 | 10°C | 7°C | 29% | ||
| Apr 16 | 10°C | 7°C | 29% | ||
| Apr 17 | 11°C | 7°C | 29% | ||
| Apr 18 | 11°C | 7°C | 30% | ||
| Apr 19 | 11°C | 7°C | 31% | ||
| Apr 20 | 11°C | 7°C | 31% | ||
| Apr 21 | 11°C | 7°C | 32% | ||
| Apr 22 | 11°C | 8°C | 34% | ||
| Apr 23 | 11°C | 8°C | 33% | ||
| Apr 24 | 11°C | 8°C | 34% | ||
| Apr 25 | 12°C | 8°C | 34% | ||
| Apr 26 | 12°C | 8°C | 35% | ||
| Apr 27 | 12°C | 8°C | 35% | ||
| Apr 28 | 12°C | 8°C | 36% | ||
| Apr 29 | 12°C | 8°C | 36% | ||
| Apr 30 | 12°C | 8°C | 37% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+2).
- April 1
- sunrise 7:16 AM, sunset 8:16 PM
- April 30
- sunrise 6:12 AM, sunset 9:06 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.