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
September
Weather in September
Temperature
September experiences an average high-temperature of a still enjoyable 17.1°C (62.8°F), barely different from August's 18.5°C (65.3°F). In the month of September, Roath experiences an average low-temperature of 11.4°C (52.5°F).Humidity
The average relative humidity in September is 83%.Rainfall
In Roath, during September, the rain falls for 10 days and regularly aggregates up to 17mm (0.67") of precipitation. In Roath, during the entire year, the rain falls for 132.6 days and collects up to 252mm (9.92") of precipitation.Snowfall
March through October are months without snowfall in Roath.Daylight
The average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:58 pm. On the last day of September, sunrise is at 7:12 am and sunset at 6:52 pm BST.
Sunshine
The average sunshine in September is 7.2h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Guard yourself - Precautionary measures against sun damage are advocated. To protect against the Sun's most potent rays, avoid direct exposure around midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How many days does it rain in September in Roath?
When it does not snow?
How many hours of daylight does Roath have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Roath have in September?
What is the month with the highest UV index?
What is the UV index reading in September?
Average temperature in September
Roath, United Kingdom
- Average high temperature in September: 17.1°C
The warmest month (with the highest average high temperature) is July (19°C).
The month with the lowest average high temperature is January (7.5°C).
- Average low temperature in September: 11.4°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is February (3.9°C).
Average pressure in September
Roath, United Kingdom
- Average pressure in September: 1016.8mbar
The month with the highest atmospheric pressure is September (1016.8mbar).
The month with the lowest atmospheric pressure is November (1010mbar).
Average wind speed in September
Roath, United Kingdom
- Average wind speed in September: 16.3km/h
The windiest month (with the highest average wind speed) is February (22.3km/h).
The calmest months (with the lowest average wind speed) are June and July (15.2km/h).
Average humidity in September
Roath, United Kingdom
- Average humidity in September: 83%
The months with the highest relative humidity are November and December (86%).
The months with the lowest relative humidity are April and May (81%).
Average rainfall in September
Roath, United Kingdom
- Average rainfall in September: 17mm
The wettest months (with the highest rainfall) are August and November (31mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in September
Roath, United Kingdom
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is November (13.5 days).
The months with the least rainy days are February and April (9.1 days).
Average snowfall in September
Roath, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (5mm).
The months with the least snowfall are March, April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Roath, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1 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
Roath, 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: 7h and 1min
The month with the most sunshine is May (Average sunshine: 8h and 12min).
The month with the least sunshine is November (Average sunshine: 3h and 54min).
Average sunshine days in September
Roath, United Kingdom
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is April (19.2 days).
The month with the least sunshine days is November (13.7 days).
Average UV index in September
Roath, 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
Roath, United Kingdom
- Average cloud cover in September: 50
The month with the most cloud cover is November (Cloud cover 61).
The months with the least cloud cover are April and May (Cloud cover 46).
Average visibility in September
Roath, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are February, March and December (10km).
The months with the lowest visibility are January, April, May, June, July, August, September, October and November (9km).
