September weather forecastDerrylin, United Kingdom
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Derrylin, United Kingdom, with an average temperature fluctuating between 8.1°C (46.6°F) and 14.5°C (58.1°F).Temperature
The initiation of September sees an average high-temperature of a mild 14.5°C (58.1°F), showing minor variations from the previous month. During the month of September, the temperature in Derrylin generally drops to a low average of 8.1°C (46.6°F).Humidity
In September, the average relative humidity is 90%.Rainfall
In September, the rain falls for 15.1 days. Throughout September, 32mm (1.26") of precipitation is accumulated. In Derrylin, during the entire year, the rain falls for 195 days and collects up to 525mm (20.67") of precipitation.Snowfall
May through November are months without snowfall in Derrylin.Daylight
In Derrylin, the average length of the day in September is 12h and 42min.On the first day of September, sunrise is at 6:39 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:08 pm BST.
Sunshine
The average sunshine in September is 4.5h.UV index
The average daily maximum UV index in September in Derrylin is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 3 in September interprets into the following recommendations:
Take precautions - Protection against sunburn is recommended. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Derrylin, United Kingdom
- Average high temperature in September: 14.5°C
The warmest month (with the highest average high temperature) is July (16.8°C).
The month with the lowest average high temperature is January (5.9°C).
- Average low temperature in September: 8.1°C
The months with the highest average low temperature are July and August (9.8°C).
The coldest months (with the lowest average low temperature) are January and February (1.5°C).
Average pressure in September
Derrylin, United Kingdom
- Average pressure in September: 1014.1mbar
The month with the highest atmospheric pressure is May (1015.4mbar).
The month with the lowest atmospheric pressure is November (1007.1mbar).
Average wind speed in September
Derrylin, United Kingdom
- Average wind speed in September: 12.4km/h
The windiest month (with the highest average wind speed) is January (16.9km/h).
The calmest month (with the lowest average wind speed) is July (11km/h).
Average humidity in September
Derrylin, United Kingdom
- Average humidity in September: 90%
The months with the highest relative humidity are November and December (92%).
The month with the lowest relative humidity is April (85%).
Average rainfall in September
Derrylin, United Kingdom
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is August (59mm).
The driest month (with the least rainfall) is April (30mm).
Average rainfall days in September
Derrylin, United Kingdom
- Average rainfall days in September: 15.1 days
The month with the highest number of rainy days is July (20.2 days).
The month with the least rainy days is February (13.5 days).
Average snowfall in September
Derrylin, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (31mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Derrylin, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.3 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
Derrylin, United Kingdom
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in September: 4h and 30min
The month with the most sunshine is June (Average sunshine: 6h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
Derrylin, United Kingdom
- Average sunshine days in September: 12.7 days
The months with the most sunshine days are September and December (12.7 days).
The month with the least sunshine days is July (7.5 days).
Average UV index in September
Derrylin, United Kingdom
- Average UV index in September: 3
The months with the highest UV index are May and June (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Derrylin, United Kingdom
- Average cloud cover in September: 71
The month with the most cloud cover is August (Cloud cover 76).
The month with the least cloud cover is April (Cloud cover 63).
Average visibility in September
Derrylin, United Kingdom
- Average visibility in September: 7km
The months with the highest visibility are January, February, March, April, May, June, November and December (8km).
The months with the lowest visibility are July, August, September and October (7km).
