September weather forecastOpmeer, Netherlands
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Opmeer, Netherlands, with an average temperature varying between 13.4°C (56.1°F) and 17.7°C (63.9°F).Temperature
The transition into September marks the average high-temperature at a comfortable 17.7°C (63.9°F), differing minimally from August's 20.6°C (69.1°F). September nights experience a minor temperature downturn to a still refreshing 13.4°C (56.1°F).Humidity
In September, the average relative humidity in Opmeer is 79%.Rainfall
In Opmeer, during September, the rain falls for 13.7 days and regularly aggregates up to 26mm (1.02") of precipitation. Throughout the year, there are 160.4 rainfall days, and 266mm (10.47") of precipitation is accumulated.Snowfall
April through November are months without snowfall in Opmeer.Daylight
The average length of the day in September in Opmeer is 12h and 40min.On the first day of September in Opmeer, sunrise is at 06:51 and sunset at 20:28. On the last day of the month, sunrise is at 07:40 and sunset at 19:19 CEST.
Sunshine
In Opmeer, the average sunshine in September is 7.2h.UV index
In Opmeer, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A typical high UV index of 4 in September suggests the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Opmeer, Netherlands
- Average high temperature in September: 17.7°C
The warmest month (with the highest average high temperature) is August (20.6°C).
The month with the lowest average high temperature is January (5.5°C).
- Average low temperature in September: 13.4°C
The month with the highest average low temperature is August (15.6°C).
The coldest month (with the lowest average low temperature) is February (2.5°C).
Average pressure in September
Opmeer, Netherlands
- Average pressure in September: 1016.5mbar
The months with the highest atmospheric pressure are May and September (1016.5mbar).
The month with the lowest atmospheric pressure is November (1011mbar).
Average wind speed in September
Opmeer, Netherlands
- Average wind speed in September: 17.1km/h
The windiest month (with the highest average wind speed) is December (24.8km/h).
The calmest month (with the lowest average wind speed) is July (15.6km/h).
Average humidity in September
Opmeer, Netherlands
- Average humidity in September: 79%
The months with the highest relative humidity are January and December (84%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Opmeer, Netherlands
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is August (37mm).
The driest month (with the least rainfall) is April (8mm).
Average rainfall days in September
Opmeer, Netherlands
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is August (16.7 days).
The month with the least rainy days is April (9.1 days).
Average snowfall in September
Opmeer, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is February (12mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Opmeer, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4 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
Opmeer, 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 42min).
- Average sunshine in September: 7h and 12min
The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Opmeer, Netherlands
- Average sunshine days in September: 12.3 days
The month with the most sunshine days is April (18.4 days).
The month with the least sunshine days is December (9.7 days).
Average UV index in September
Opmeer, 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
Opmeer, Netherlands
- Average cloud cover in September: 45
The month with the most cloud cover is December (Cloud cover 66).
The months with the least cloud cover are April and August (Cloud cover 39).
Average visibility in September
Opmeer, Netherlands
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
