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
Transitioning from August to September, Cwmfelin Mynach observes an average high-temperature of a still enjoyable 16.2°C (61.2°F), differing subtly from the previous month. Cwmfelin Mynach's nighttime average temperature in September subtly descends to a fresh 11.4°C (52.5°F) from the daily highs.Humidity
The average relative humidity in September in Cwmfelin Mynach is 85%.Rainfall
In Cwmfelin Mynach, during September, the rain falls for 15.8 days and regularly aggregates up to 41mm (1.61") of precipitation. Throughout the year, in Cwmfelin Mynach, there are 210.2 rainfall days, and 515mm (20.28") of precipitation is accumulated.Snowfall
March through October are months without snowfall.Daylight
The average length of the day in September in Cwmfelin Mynach is 12h and 39min.On the first day of the month, sunrise is at 6:31 am and sunset at 8:05 pm. On the last day of September, in Cwmfelin Mynach, sunrise is at 7:18 am and sunset at 6:57 pm BST.
Sunshine
In September, the average sunshine is 6.8h.UV index
The months with the highest UV index in Cwmfelin Mynach, United Kingdom, are May through September, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
What is the usual temperature for Cwmfelin Mynach in September?
What is the average humidity in September in Cwmfelin Mynach?
How many days does it rain in September in Cwmfelin Mynach?
When it does not snow in Cwmfelin Mynach?
What is the average length of the day in September in Cwmfelin Mynach?
What time are sunrise and sunset in September in Cwmfelin Mynach?
How many hours of sunshine does Cwmfelin Mynach have in September?
What is the month with the highest UV index in Cwmfelin Mynach?
What is the UV index intensity in September in Cwmfelin Mynach?
Average temperature in September
Cwmfelin Mynach, United Kingdom
- Average high temperature in September: 16.2°C
The warmest month (with the highest average high temperature) is July (17.9°C).
The month with the lowest average high temperature is February (7.6°C).
- Average low temperature in September: 11.4°C
The month with the highest average low temperature is August (12.8°C).
The coldest month (with the lowest average low temperature) is February (3.9°C).
Average pressure in September
Cwmfelin Mynach, United Kingdom
- Average pressure in September: 1016.6mbar
The months with the highest atmospheric pressure are May and September (1016.6mbar).
The month with the lowest atmospheric pressure is November (1009.6mbar).
Average wind speed in September
Cwmfelin Mynach, United Kingdom
- Average wind speed in September: 16.9km/h
The windiest month (with the highest average wind speed) is December (22.3km/h).
The calmest month (with the lowest average wind speed) is June (14.5km/h).
Average humidity in September
Cwmfelin Mynach, United Kingdom
- Average humidity in September: 85%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and May (82%).
Average rainfall in September
Cwmfelin Mynach, United Kingdom
- Average rainfall in September: 41mm
The wettest month (with the highest rainfall) is November (60mm).
The driest month (with the least rainfall) is May (24mm).
Average rainfall days in September
Cwmfelin Mynach, United Kingdom
- Average rainfall days in September: 15.8 days
The month with the highest number of rainy days is December (20.6 days).
The month with the least rainy days is April (13.5 days).
Average snowfall in September
Cwmfelin Mynach, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (7mm).
The months with the least snowfall are March, April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Cwmfelin Mynach, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Cwmfelin Mynach, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in September: 6h and 5min
The month with the most sunshine is May (Average sunshine: 8h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
Cwmfelin Mynach, United Kingdom
- Average sunshine days in September: 10 days
The month with the most sunshine days is March (13.2 days).
The month with the least sunshine days is August (6.3 days).
Average UV index in September
Cwmfelin Mynach, 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
Cwmfelin Mynach, United Kingdom
- Average cloud cover in September: 52
The month with the most cloud cover is December (Cloud cover 64).
The months with the least cloud cover are April and May (Cloud cover 48).
Average visibility in September
Cwmfelin Mynach, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Cwmfelin Mynach, United Kingdom
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