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
The arrival of September is marked by an average high-temperature of a moderate 14.6°C (58.3°F), bearing a close resemblance to August. During September, Slamannan records an average temperature of 8.5°C (47.3°F) at night.Humidity
The average relative humidity in September is 88%.Rainfall
April and September are months with the least rain in Slamannan when the rain falls for 6.9 days and typically aggregates up to 9mm (0.35") of rain.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September in Slamannan, United Kingdom, is 12h and 44min.On the first day of September, sunrise is at 6:21 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 6:52 pm BST.
Sunshine
In September, the average sunshine is 5.6h.UV index
The average daily maximum UV index in September in Slamannan is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 3 suggests these recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What is the usual temperature for Slamannan in September?
What is the average humidity in September in Slamannan?
What is the driest month in Slamannan?
How many days does it rain in September in Slamannan?
When it does not snow in Slamannan?
What is the average length of the day in September in Slamannan?
When are sunrise and sunset in September in Slamannan?
How long on average sun shines in September in Slamannan?
What is the UV index reading in September in Slamannan?
Average temperature in September
Slamannan, United Kingdom
- Average high temperature in September: 14.6°C
The warmest month (with the highest average high temperature) is July (17.3°C).
The month with the lowest average high temperature is January (4.7°C).
- Average low temperature in September: 8.5°C
The month with the highest average low temperature is July (9.9°C).
The coldest months (with the lowest average low temperature) are January and February (1.2°C).
Average pressure in September
Slamannan, United Kingdom
- Average pressure in September: 1013.3mbar
The month with the highest atmospheric pressure is May (1015.4mbar).
The month with the lowest atmospheric pressure is November (1006.8mbar).
Average wind speed in September
Slamannan, United Kingdom
- Average wind speed in September: 13.8km/h
The windiest month (with the highest average wind speed) is January (17.8km/h).
The calmest month (with the lowest average wind speed) is July (12km/h).
Average humidity in September
Slamannan, United Kingdom
- Average humidity in September: 88%
The months with the highest relative humidity are January, November and December (89%).
The month with the lowest relative humidity is April (81%).
Average rainfall in September
Slamannan, United Kingdom
- Average rainfall in September: 9mm
The wettest months (with the highest rainfall) are July and August (24mm).
The driest months (with the least rainfall) are April and September (9mm).
Average rainfall days in September
Slamannan, United Kingdom
- Average rainfall days in September: 6.9 days
The month with the highest number of rainy days is July (12 days).
The month with the least rainy days is February (6.5 days).
Average snowfall in September
Slamannan, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (23mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Slamannan, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Slamannan, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 30min).
The month with the shortest days is December (Average daylight: 7h and 6min).
- Average sunshine in September: 5h and 4min
The month with the most sunshine is June (Average sunshine: 6h and 54min).
The months with the least sunshine are February and October (Average sunshine: 3h and 42min).
Average sunshine days in September
Slamannan, United Kingdom
- Average sunshine days in September: 21.2 days
The month with the most sunshine days is December (21.6 days).
The month with the least sunshine days is June (15 days).
Average UV index in September
Slamannan, United Kingdom
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 4).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Slamannan, United Kingdom
- Average cloud cover in September: 63
The month with the most cloud cover is July (Cloud cover 65).
The month with the least cloud cover is April (Cloud cover 56).
Average visibility in September
Slamannan, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May and December (9km).
The months with the lowest visibility are June, July, August, September, October and November (8km).
Slamannan, United Kingdom
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