September weather forecastGroningen, Netherlands
September
Weather in September
September in Groningen witnesses the early signs of autumn, as leaves begin their transformation into vibrant hues. Light cardigans make a comeback, as the temperatures take on a milder tone. The frequency of rainfall picks up, lending a fresh clean scent to the air. Though the summer glow starts to fade, the gradual drop in temperatures and shorter days add their own muted charm to the city. An average temperature from 11.7°C (53.1°F) to 18°C (64.4°F) reflects the transitional weather from summer warmth to autumn chill.Temperature
A subtle shift in Groningen's weather is observed as August turns into September, with the average high temperature reducing from an agreeable 21.3°C (70.3°F) to a comfortable 18°C (64.4°F). Throughout the nights in September, an average low-temperature of 11.7°C (53.1°F) is noted in Groningen.Humidity
In Groningen, the average relative humidity in September is 82%.Rainfall
In Groningen, Netherlands, in September, during 15.1 rainfall days, 26mm (1.02") of precipitation is typically accumulated. In Groningen, Netherlands, during the entire year, the rain falls for 179 days and collects up to 336mm (13.23") of precipitation.Snowfall
In Groningen, Netherlands, snow does not fall in April through October.Daylight
The average length of the day in September in Groningen, Netherlands, is 12h and 41min.On the first day of September in Groningen, Netherlands, sunrise is at 06:44 and sunset at 20:22. On the last day of the month, sunrise is at 07:34 and sunset at 19:12 CEST.
Sunshine
In September, the average sunshine in Groningen is 7.2h.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 unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum UV index of 4 in September translates into the following recommendations:
Take precautions - Protection against sun damage is advised. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Groningen, Netherlands
- Average high temperature in September: 18°C
The warmest month (with the highest average high temperature) is August (21.3°C).
The month with the lowest average high temperature is January (4.4°C).
- Average low temperature in September: 11.7°C
The month with the highest average low temperature is August (13.9°C).
The coldest month (with the lowest average low temperature) is February (1°C).
Average pressure in September
Groningen, Netherlands
- Average pressure in September: 1016.4mbar
The months with the highest atmospheric pressure are May and September (1016.4mbar).
The month with the lowest atmospheric pressure is November (1011.1mbar).
Average wind speed in September
Groningen, Netherlands
- Average wind speed in September: 15.1km/h
The windiest month (with the highest average wind speed) is December (21.2km/h).
The calmest month (with the lowest average wind speed) is July (14km/h).
Average humidity in September
Groningen, Netherlands
- Average humidity in September: 82%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Groningen, Netherlands
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is June (41mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in September
Groningen, Netherlands
- Average rainfall days in September: 15.1 days
The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is February (11.5 days).
Average snowfall in September
Groningen, Netherlands
- Average snowfall in September: 0mm
The month with the highest snowfall is January (17mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Groningen, Netherlands
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.8 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
Groningen, 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 12min
The month with the most sunshine is July (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Groningen, Netherlands
- Average sunshine days in September: 10.2 days
The months with the most sunshine days are March and April (14.8 days).
The month with the least sunshine days is December (9 days).
Average UV index in September
Groningen, 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
Groningen, Netherlands
- Average cloud cover in September: 46
The month with the most cloud cover is December (Cloud cover 68).
The months with the least cloud cover are April and August (Cloud cover 41).
Average visibility in September
Groningen, Netherlands
- Average visibility in September: 9km
The months with the highest visibility are April and August (10km).
The months with the lowest visibility are January, February, March, May, June, July, September, October, November and December (9km).
