September weather forecastRhondda, United Kingdom
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Rhondda, United Kingdom, with an average temperature varying between 16.2°C (61.2°F) and 9.9°C (49.8°F).Temperature
Transitioning from August to September, Rhondda observes an average high-temperature of a still comfortable 16.2°C (61.2°F), differing subtly from the previous month. During September, Rhondda observes a consistent average nighttime temperature of 9.9°C (49.8°F).Humidity
In Rhondda, United Kingdom, the average relative humidity in September is 87%.Rainfall
In Rhondda, in September, during 15.5 rainfall days, 41mm (1.61") of precipitation is typically accumulated. In Rhondda, during the entire year, the rain falls for 200.8 days and collects up to 659mm (25.94") of precipitation.Snowfall
In Rhondda, snow does not fall in May through October.Daylight
The average length of the day in September in Rhondda is 12h and 38min.On the first day of the month, sunrise is at 6:27 am and sunset at 7:59 pm. On the last day of September, in Rhondda, sunrise is at 7:13 am and sunset at 6:53 pm BST.
Sunshine
In September, the average sunshine in Rhondda is 6.3h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The solar radiation around mid-day is intense; avoid the Sun and stay safe. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Rhondda, United Kingdom
- Average high temperature in September: 16.2°C
The warmest month (with the highest average high temperature) is July (18.3°C).
The month with the lowest average high temperature is January (6.6°C).
- Average low temperature in September: 9.9°C
The month with the highest average low temperature is August (12°C).
The coldest month (with the lowest average low temperature) is January (2.6°C).
Average pressure in September
Rhondda, United Kingdom
- Average pressure in September: 1016.6mbar
The month with the highest atmospheric pressure is May (1016.7mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).
Average wind speed in September
Rhondda, United Kingdom
- Average wind speed in September: 15.1km/h
The windiest month (with the highest average wind speed) is February (20.9km/h).
The calmest months (with the lowest average wind speed) are June and July (14.2km/h).
Average humidity in September
Rhondda, United Kingdom
- Average humidity in September: 87%
The months with the highest relative humidity are January, November and December (89%).
The months with the lowest relative humidity are April and May (83%).
Average rainfall in September
Rhondda, United Kingdom
- Average rainfall in September: 41mm
The wettest month (with the highest rainfall) is November (81mm).
The driest month (with the least rainfall) is May (34mm).
Average rainfall days in September
Rhondda, United Kingdom
- Average rainfall days in September: 15.5 days
The months with the highest number of rainy days are August and November (19.4 days).
The month with the least rainy days is February (13.3 days).
Average snowfall in September
Rhondda, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (29mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Rhondda, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Rhondda, United Kingdom
- Average daylight in September: 12h and 36min
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 18min
The months with the most sunshine are April and May (Average sunshine: 7h and 24min).
The months with the least sunshine are January, February, November and December (Average sunshine: 3h and 30min).
Average sunshine days in September
Rhondda, United Kingdom
- Average sunshine days in September: 11.1 days
The month with the most sunshine days is April (12.9 days).
The month with the least sunshine days is November (7.2 days).
Average UV index in September
Rhondda, United Kingdom
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (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
Rhondda, United Kingdom
- Average cloud cover in September: 57
The month with the most cloud cover is November (Cloud cover 67).
The months with the least cloud cover are April and May (Cloud cover 52).
Average visibility in September
Rhondda, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, October, November and December (9km).
The months with the lowest visibility are July, August and September (8km).
