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
Weather in September
Temperature
Grimoldby records an average high-temperature of a still enjoyable 17.4°C (63.3°F) in September, maintaining a close correlation with August's 19.8°C (67.6°F). Throughout the month of September, Grimoldby witnesses an average low-temperature of 12°C (53.6°F).Humidity
The average relative humidity in September in Grimoldby is 78%.Rainfall
In September, in Grimoldby, the rain falls for 11.3 days. Throughout September, 28mm (1.1") of precipitation is accumulated. In Grimoldby, United Kingdom, during the entire year, the rain falls for 165.5 days and collects up to 413mm (16.26") of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 41min.On the first day of September in Grimoldby, sunrise is at 6:10 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:38 pm BST.
Sunshine
In Grimoldby, the average sunshine in September is 7.3h.UV index
In September, the average daily maximum UV index in Grimoldby, United Kingdom, is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, a regular UV index of 4 translates into these guidelines:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Frequently asked questions
What are the temperatures in Grimoldby in September?
What is the average humidity in September in Grimoldby?
How many days does it rain in September in Grimoldby?
When it does not snow in Grimoldby?
What is the average length of the day in September in Grimoldby?
What time are sunrise and sunset in September in Grimoldby?
How long on average sun shines in September in Grimoldby?
What is the UV index reading in September in Grimoldby?
Average temperature in September
Grimoldby, United Kingdom
- Average high temperature in September: 17.4°C
The warmest month (with the highest average high temperature) is August (19.8°C).
The month with the lowest average high temperature is January (6.2°C).
- Average low temperature in September: 12°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (2.8°C).
Average pressure in September
Grimoldby, United Kingdom
- Average pressure in September: 1015.7mbar
The month with the highest atmospheric pressure is May (1016.4mbar).
The month with the lowest atmospheric pressure is November (1009.3mbar).
Average wind speed in September
Grimoldby, United Kingdom
- Average wind speed in September: 16.4km/h
The windiest month (with the highest average wind speed) is December (22.3km/h).
The calmest month (with the lowest average wind speed) is July (14.6km/h).
Average humidity in September
Grimoldby, United Kingdom
- Average humidity in September: 78%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Grimoldby, United Kingdom
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is October (48mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in September
Grimoldby, United Kingdom
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is September (11.3 days).
Average snowfall in September
Grimoldby, United Kingdom
- 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
Grimoldby, United Kingdom
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (3.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grimoldby, United Kingdom
- 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 August (Average sunshine: 8h and 12min).
The months with the least sunshine are February and November (Average sunshine: 3h and 54min).
Average sunshine days in September
Grimoldby, United Kingdom
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is April (15.7 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in September
Grimoldby, United Kingdom
- 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
Grimoldby, United Kingdom
- Average cloud cover in September: 47
The month with the most cloud cover is February (Cloud cover 61).
The months with the least cloud cover are April and September (Cloud cover 47).
Average visibility in September
Grimoldby, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are March, August, September and October (10km).
The months with the lowest visibility are January, February, April, May, June, July, November and December (9km).
Grimoldby, United Kingdom
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