September weather forecastCastricum, Netherlands
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Castricum, Netherlands, with an average temperature varying between 14.5°C (58.1°F) and 17.7°C (63.9°F).Temperature
The arrival of September sees a recorded average high-temperature of a still enjoyable 17.7°C (63.9°F), showing little divergence from the previous month's conditions. Castricum, during September nights, experiences a subtle shift to a low average of 14.5°C (58.1°F) from the day's heat.Humidity
The average relative humidity in September in Castricum is 77%.Rainfall
In Castricum, in September, it is raining for 15.2 days, with typically 36mm (1.42") of accumulated precipitation. In Castricum, during the entire year, the rain falls for 169.2 days and collects up to 339mm (13.35") of precipitation.Snowfall
April through November are months without snowfall.Daylight
In September, the average length of the day in Castricum, Netherlands, is 12h and 40min.On the first day of September in Castricum, sunrise is at 06:53 and sunset at 20:29. On the last day of the month, sunrise is at 07:41 and sunset at 19:20 CEST.
Sunshine
In September, the average sunshine in Castricum is 7h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: An average UV index of 4 in September transforms into this advice:
Act with care - Obligation to protect against skin and eye damage is highlighted. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Castricum, Netherlands
- Average high temperature in September: 17.7°C
The warmest month (with the highest average high temperature) is August (19.9°C).
The months with the lowest average high temperature are January and February (5.8°C).
- Average low temperature in September: 14.5°C
The month with the highest average low temperature is August (16.6°C).
The coldest month (with the lowest average low temperature) is February (3.3°C).
Average pressure in September
Castricum, Netherlands
- Average pressure in September: 1016.6mbar
The month with the highest atmospheric pressure is September (1016.6mbar).
The month with the lowest atmospheric pressure is November (1010.9mbar).
Average wind speed in September
Castricum, Netherlands
- Average wind speed in September: 20.3km/h
The windiest month (with the highest average wind speed) is December (28.4km/h).
The calmest month (with the lowest average wind speed) is July (18km/h).
Average humidity in September
Castricum, Netherlands
- Average humidity in September: 77%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Castricum, Netherlands
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is August (48mm).
The driest month (with the least rainfall) is April (11mm).
Average rainfall days in September
Castricum, Netherlands
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is August (17.2 days).
The month with the least rainy days is April (10.6 days).
Average snowfall in September
Castricum, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is February (9mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Castricum, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Castricum, Netherlands
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in September: 7h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Castricum, Netherlands
- Average sunshine days in September: 11.4 days
The month with the most sunshine days is April (17.7 days).
The month with the least sunshine days is December (9.1 days).
Average UV index in September
Castricum, Netherlands
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Castricum, Netherlands
- Average cloud cover in September: 46
The month with the most cloud cover is December (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in September
Castricum, Netherlands
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and November (10km).
The month with the lowest visibility is December (9km).
