Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
September's presence marks an average high-temperature of an enjoyable 17.6°C (63.7°F), subtly varied from August's 20.3°C (68.5°F). In Holwerd, September nights maintain a consistent temperature, with an average low of 13.4°C (56.1°F).Humidity
The average relative humidity in September in Holwerd is 80%.Rainfall
In Holwerd, during September, the rain falls for 17.3 days and regularly aggregates up to 41mm (1.61") of precipitation. Throughout the year, in Holwerd, there are 188.1 rainfall days, and 390mm (15.35") of precipitation is accumulated.Snowfall
April through October are months without snowfall in Holwerd.Daylight
The average length of the day in September in Holwerd is 12h and 41min.On the first day of the month, sunrise is at 06:46 and sunset at 20:25. On the last day of September, in Holwerd, sunrise is at 07:37 and sunset at 19:15 CEST.
Sunshine
In Holwerd, the average sunshine in September is 7.3h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Holwerd in September?
What is the average humidity in September in Holwerd?
How many days does it rain in September in Holwerd?
When it does not snow in Holwerd?
How many hours of daylight does Holwerd have in September?
When are sunrise and sunset in September in Holwerd?
How many hours of sunshine does Holwerd have in September?
What is the UV index intensity in September in Holwerd?
Average temperature in September
Holwerd, Netherlands
- Average high temperature in September: 17.6°C
The warmest month (with the highest average high temperature) is August (20.3°C).
The months with the lowest average high temperature are January and February (5.3°C).
- Average low temperature in September: 13.4°C
The month with the highest average low temperature is August (15.2°C).
The coldest month (with the lowest average low temperature) is February (2.3°C).
Average pressure in September
Holwerd, Netherlands
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is May (1016.4mbar).
The month with the lowest atmospheric pressure is November (1010.7mbar).
Average wind speed in September
Holwerd, Netherlands
- Average wind speed in September: 19.3km/h
The windiest month (with the highest average wind speed) is December (26.8km/h).
The calmest month (with the lowest average wind speed) is July (17.2km/h).
Average humidity in September
Holwerd, Netherlands
- Average humidity in September: 80%
The month with the highest relative humidity is December (85%).
The months with the lowest relative humidity are April, May and August (79%).
Average rainfall in September
Holwerd, Netherlands
- Average rainfall in September: 41mm
The wettest month (with the highest rainfall) is August (46mm).
The driest month (with the least rainfall) is April (16mm).
Average rainfall days in September
Holwerd, Netherlands
- Average rainfall days in September: 17.3 days
The month with the highest number of rainy days is December (18.8 days).
The month with the least rainy days is April (11.1 days).
Average snowfall in September
Holwerd, Netherlands
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (15mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Holwerd, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Holwerd, Netherlands
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Holwerd, Netherlands
- Average sunshine days in September: 9.5 days
The month with the most sunshine days is March (16.7 days).
The month with the least sunshine days is December (7.1 days).
Average UV index in September
Holwerd, Netherlands
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Holwerd, Netherlands
- Average cloud cover in September: 46
The month with the most cloud cover is December (Cloud cover 67).
The months with the least cloud cover are April and August (Cloud cover 39).
Average visibility in September
Holwerd, Netherlands
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January and December (9km).
