September weather forecastHarlingen, Netherlands
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Harlingen, Netherlands, with an average temperature fluctuating between 13.4°C (56.1°F) and 17.6°C (63.7°F).Temperature
With the advent of September, Harlingen's high-temperatures adjust to an enjoyable 17.6°C (63.7°F), closely aligning with the preceding month. Throughout September, Harlingen observes a steady low-temperature average of 13.4°C (56.1°F), reflecting a minor dip from daytime highs.Humidity
The average relative humidity in September is 80%.Rainfall
In September, the rain falls for 17.3 days. Throughout September, 41mm (1.61") of precipitation is accumulated. Throughout the year, there are 188.1 rainfall days, and 390mm (15.35") of precipitation is accumulated.Snowfall
In Harlingen, Netherlands, snow does not fall in April through October.Sea temperature
August and September, with an average sea temperature of 17.7°C (63.9°F), are months with the warmest seawater in Harlingen.Note: Swimming in water with a temperature of 17.7°C (63.9°F) is not a pleasurable experience for the majority. As the temperature falls below 21°C (69.8°F), it becomes increasingly hard to control one's breathing.
Daylight
In Harlingen, the average length of the day in September is 12h and 41min.On the first day of the month, sunrise is at 06:49 and sunset at 20:27. On the last day of September, sunrise is at 07:39 and sunset at 19:17 CEST.
Sunshine
In September, the average sunshine is 7.3h.UV index
In Harlingen, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Harlingen, 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
Harlingen, 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
Harlingen, 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
Harlingen, 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
Harlingen, 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
Harlingen, 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
Harlingen, 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
Harlingen, 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 sea temperature in September
Harlingen, Netherlands
- Average sea temperature in September: 17.7°C
The best months for swimming (with the highest average sea temperature) are August and September (17.7°C).
The coldest month (with the lowest average sea temperature) is March (5.8°C).
Average daylight in September /
Average sunshine in September
Harlingen, Netherlands
- Average daylight in September: 12h and 42min
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 18min
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
Harlingen, 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
Harlingen, 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
Harlingen, 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
Harlingen, 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).
