September weather forecastDerrymacash, United Kingdom
September
Weather in September
September, the first month of the autumn in Derrymacash, is still a mild month, with an average temperature ranging between min 9.4°C (48.9°F) and max 14.9°C (58.8°F).Temperature
The arrival of September brings an average high-temperature of a moderate 14.9°C (58.8°F), nearly identical to August's 16.6°C (61.9°F). An average low-temperature of 9.4°C (48.9°F) marks the nights throughout September.Humidity
In Derrymacash, the average relative humidity in September is 89%.Rainfall
In Derrymacash, in September, it is raining for 9.7 days, with typically 15mm (0.59") of accumulated precipitation. Throughout the year, in Derrymacash, United Kingdom, there are 148.5 rainfall days, and 243mm (9.57") of precipitation is accumulated.Snowfall
April through October are months without snowfall in Derrymacash.Daylight
The average length of the day in September in Derrymacash is 12h and 42min.On the first day of September, sunrise is at 6:34 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 7:03 pm BST.
Sunshine
The average sunshine in September is 5.7h.UV index
In September, the average daily maximum UV index in Derrymacash is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In September, the UV index of 3 transforms into the following advice:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Derrymacash, United Kingdom
- Average high temperature in September: 14.9°C
The warmest month (with the highest average high temperature) is July (17.2°C).
The month with the lowest average high temperature is January (6.5°C).
- Average low temperature in September: 9.4°C
The month with the highest average low temperature is August (10.8°C).
The coldest months (with the lowest average low temperature) are January and February (2.3°C).
Average pressure in September
Derrymacash, United Kingdom
- Average pressure in September: 1014.4mbar
The month with the highest atmospheric pressure is May (1015.6mbar).
The month with the lowest atmospheric pressure is November (1007.4mbar).
Average wind speed in September
Derrymacash, United Kingdom
- Average wind speed in September: 15.1km/h
The windiest month (with the highest average wind speed) is January (19.7km/h).
The calmest month (with the lowest average wind speed) is July (12.8km/h).
Average humidity in September
Derrymacash, United Kingdom
- Average humidity in September: 89%
The month with the highest relative humidity is December (90%).
The month with the lowest relative humidity is April (84%).
Average rainfall in September
Derrymacash, United Kingdom
- Average rainfall in September: 15mm
The wettest month (with the highest rainfall) is June (30mm).
The driest month (with the least rainfall) is January (13mm).
Average rainfall days in September
Derrymacash, United Kingdom
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is September (9.7 days).
Average snowfall in September
Derrymacash, United Kingdom
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (8mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Derrymacash, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (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
Derrymacash, United Kingdom
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 17h and 12min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in September: 5h and 42min
The month with the most sunshine is June (Average sunshine: 7h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in September
Derrymacash, United Kingdom
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is December (16 days).
The month with the least sunshine days is August (11.2 days).
Average UV index in September
Derrymacash, United Kingdom
- Average UV index in September: 3
The months with the highest UV index are June and August (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Derrymacash, United Kingdom
- Average cloud cover in September: 60
The months with the most cloud cover are July and August (Cloud cover 64).
The month with the least cloud cover is April (Cloud cover 56).
Average visibility in September
Derrymacash, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, October, November and December (9km).
The months with the lowest visibility are June, July, August and September (8km).
