September weather forecastPenmon, United Kingdom
September weather for Penmon, United Kingdom: September, the first month of the autumn in Penmon, is also a moderate month, with temperature in the range of an average high of 15.3°C (59.5°F) and an average low of 11.5°C (52.7°F). The months with the highest UV index in Penmon, United Kingdom, are May through September, with an average maximum UV index of 4.
September
Weather in September
September, the first month of the autumn in Penmon, is also a moderate month, with temperature in the range of an average high of 15.3°C (59.5°F) and an average low of 11.5°C (52.7°F).Temperature
August's transformation into September witnesses an average high-temperature of a moderate 15.3°C (59.5°F), noting a minor change from the preceding month. Nighttime readings during September register a minimal drop from daytime highs, averaging at a fresh 11.5°C (52.7°F).Humidity
The average relative humidity in September is 84%.Rainfall
In Penmon, in September, it is raining for 17.9 days, with typically 45mm (1.77") of accumulated precipitation. In Penmon, United Kingdom, during the entire year, the rain falls for 228.5 days and collects up to 604mm (23.78") of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 41min.On the first day of the month, sunrise is at 6:26 am and sunset at 8:05 pm. On the last day of September, in Penmon, sunrise is at 7:17 am and sunset at 6:55 pm BST.
Sunshine
In Penmon, the average sunshine in September is 6.5h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 4 during September leads to these advisories:
Prioritize safety - Suggestions to prevent sun damage are offered. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Penmon, United Kingdom
- Average high temperature in September: 15.3°C
The warmest month (with the highest average high temperature) is July (16.9°C).
The month with the lowest average high temperature is January (6.8°C).
- Average low temperature in September: 11.5°C
The month with the highest average low temperature is August (12.8°C).
The coldest month (with the lowest average low temperature) is January (3.8°C).
Average pressure in September
Penmon, United Kingdom
- Average pressure in September: 1015.6mbar
The month with the highest atmospheric pressure is May (1016.2mbar).
The month with the lowest atmospheric pressure is November (1008.8mbar).
Average wind speed in September
Penmon, United Kingdom
- Average wind speed in September: 17.9km/h
The windiest month (with the highest average wind speed) is December (23.8km/h).
The calmest month (with the lowest average wind speed) is June (14.4km/h).
Average humidity in September
Penmon, United Kingdom
- Average humidity in September: 84%
The months with the highest relative humidity are January and August (85%).
The months with the lowest relative humidity are April and May (81%).
Average rainfall in September
Penmon, United Kingdom
- Average rainfall in September: 45mm
The wettest month (with the highest rainfall) is November (68mm).
The driest month (with the least rainfall) is May (31mm).
Average rainfall days in September
Penmon, United Kingdom
- Average rainfall days in September: 17.9 days
The month with the highest number of rainy days is December (22.5 days).
The month with the least rainy days is February (15.8 days).
Average snowfall in September
Penmon, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (21mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Penmon, 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, September and October (0 days).
Average daylight in September /
Average sunshine in September
Penmon, United Kingdom
- Average daylight in September: 12h and 42min
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: 6h and 30min
The months with the most sunshine are May and June (Average sunshine: 7h and 42min).
The month with the least sunshine is November (Average sunshine: 3h and 36min).
Average sunshine days in September
Penmon, United Kingdom
- Average sunshine days in September: 8.5 days
The months with the most sunshine days are March and May (11 days).
The month with the least sunshine days is November (5.2 days).
Average UV index in September
Penmon, United Kingdom
- Average UV index in September: 4
The months with the highest UV index are May, June, July, August and September (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
Penmon, United Kingdom
- Average cloud cover in September: 55
The month with the most cloud cover is December (Cloud cover 65).
The month with the least cloud cover is May (Cloud cover 49).
Average visibility in September
Penmon, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are March, September and October (10km).
The months with the lowest visibility are January, February, April, May, June, July, August, November and December (9km).
