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
Cathays greets September with an average high-temperature of a still comfortable 17.1°C (62.8°F), marking a slight deviation from the preceding month. An average low-temperature of 11.4°C (52.5°F) is recorded during the nights in September in Cathays.Humidity
In Cathays, the average relative humidity in September is 83%.Rainfall
In Cathays, in September, during 10 rainfall days, 17mm (0.67") of precipitation is typically accumulated. In Cathays, during the entire year, the rain falls for 132.6 days and collects up to 252mm (9.92") of precipitation.Snowfall
In Cathays, snow does not fall in March through October.Daylight
The average length of the day in September in Cathays is 12h and 38min.On the first day of September in Cathays, sunrise is at 6:26 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:52 pm BST.
Sunshine
In Cathays, the average sunshine in September is 7.2h.UV index
The months with the highest UV index in Cathays are May through September, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Frequently asked questions
What are September temperatures in Cathays?
What is the average humidity in September in Cathays?
How many days does it rain in September in Cathays?
When it does not snow in Cathays?
How many hours of daylight does Cathays have in September?
When are sunrise and sunset in September in Cathays?
How many hours of sunshine does Cathays have in September?
What is the month with the highest UV index in Cathays?
What is the UV index reading in September in Cathays?
Average temperature in September
Cathays, 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
Cathays, 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
Cathays, 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
Cathays, 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
Cathays, 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
Cathays, 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
Cathays, 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
Cathays, 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
Cathays, 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
Cathays, 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
Cathays, 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
Cathays, 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
Cathays, 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).
Cathays, United Kingdom
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