September weather forecastAppin, United Kingdom
September
Weather in September
September, the first month of the autumn in Appin, is also a moderate month, with temperature in the range of an average high of 13.8°C (56.8°F) and an average low of 9.7°C (49.5°F).Temperature
The advent of September presents an average high-temperature of a still mild 13.8°C (56.8°F), maintaining a close correlation with the preceding month. Appin, in the month of September, notes an average low temperature of 9.7°C (49.5°F), indicating a small decrease from the daytime highs.Humidity
July through September, with an average relative humidity of 87%, are the most humid months.Rainfall
In Appin, in September, it is raining for 21.8 days, with typically 93mm (3.66") of accumulated precipitation. Throughout the year, there are 251.8 rainfall days, and 1222mm (48.11") of precipitation is accumulated.Snowfall
May through November are months without snowfall.Daylight
The average length of the day in September is 12h and 46min.On the first day of September in Appin, sunrise is at 6:25 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 6:58 pm BST.
Sunshine
In Appin, the average sunshine in September is 5.2h.UV index
In Appin, United Kingdom, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a daily maximum UV index of 3 leads to the following instructions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Appin, United Kingdom
- Average high temperature in September: 13.8°C
The warmest month (with the highest average high temperature) is July (15.4°C).
The months with the lowest average high temperature are January and February (5.7°C).
- Average low temperature in September: 9.7°C
The month with the highest average low temperature is July (10.8°C).
The coldest month (with the lowest average low temperature) is January (2.7°C).
Average pressure in September
Appin, United Kingdom
- Average pressure in September: 1012.5mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is November (1006.1mbar).
Average wind speed in September
Appin, United Kingdom
- Average wind speed in September: 15.9km/h
The windiest month (with the highest average wind speed) is January (22.2km/h).
The calmest month (with the lowest average wind speed) is June (12.2km/h).
Average humidity in September
Appin, United Kingdom
- Average humidity in September: 87%
The months with the highest relative humidity are July, August and September (87%).
The month with the lowest relative humidity is April (80%).
Average rainfall in September
Appin, United Kingdom
- Average rainfall in September: 93mm
The wettest month (with the highest rainfall) is December (144mm).
The driest month (with the least rainfall) is April (51mm).
Average rainfall days in September
Appin, United Kingdom
- Average rainfall days in September: 21.8 days
The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is April (18.1 days).
Average snowfall in September
Appin, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (46mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Appin, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is 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
Appin, United Kingdom
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 17h and 42min).
The month with the shortest days is December (Average daylight: 6h and 54min).
- Average sunshine in September: 5h and 12min
The month with the most sunshine is June (Average sunshine: 7h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
Appin, United Kingdom
- Average sunshine days in September: 6.6 days
The month with the most sunshine days is May (10.8 days).
The month with the least sunshine days is August (5.3 days).
Average UV index in September
Appin, United Kingdom
- Average UV index in September: 3
The month with the highest UV index is 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
Appin, United Kingdom
- Average cloud cover in September: 65
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is April (Cloud cover 55).
Average visibility in September
Appin, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (9km).
The months with the lowest visibility are July and August (8km).
