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
Gelligaer's average high-temperature in September is a still refreshing 16.7°C (62.1°F), marking an insignificant difference from the 18.3°C (64.9°F) of August. The month of September records an average low-temperature of 10.4°C (50.7°F) in Gelligaer.Humidity
The average relative humidity in September is 85%.Rainfall
In September, the rain falls for 12.7 days. Throughout September, 29mm (1.14") of precipitation is accumulated. In Gelligaer, during the entire year, the rain falls for 179.9 days and collects up to 488mm (19.21") of precipitation.Snowfall
In Gelligaer, United Kingdom, snow does not fall in June through October.Daylight
In Gelligaer, the average length of the day in September is 12h and 38min.On the first day of September in Gelligaer, United Kingdom, sunrise is at 6:26 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:52 pm BST.
Sunshine
The average sunshine in September is 6.9h.UV index
The months with the highest UV index in Gelligaer are May through September, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during September leads to these instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. The solar radiation around mid-day is intense; avoid the Sun and stay safe. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Gelligaer?
What is the average humidity in September in Gelligaer?
How much does it rain in Gelligaer in September?
When it does not snow in Gelligaer?
What is the average length of the day in September in Gelligaer?
What time are sunrise and sunset in September in Gelligaer?
How long on average sun shines in September in Gelligaer?
When is the highest UV index in Gelligaer?
What is the UV index intensity in September in Gelligaer?
Average temperature in September
Gelligaer, United Kingdom
- Average high temperature in September: 16.7°C
The warmest month (with the highest average high temperature) is July (18.7°C).
The month with the lowest average high temperature is January (6.9°C).
- Average low temperature in September: 10.4°C
The months with the highest average low temperature are July and August (12.3°C).
The coldest month (with the lowest average low temperature) is January (3°C).
Average pressure in September
Gelligaer, United Kingdom
- Average pressure in September: 1016.7mbar
The months with the highest atmospheric pressure are May and September (1016.7mbar).
The month with the lowest atmospheric pressure is November (1009.9mbar).
Average wind speed in September
Gelligaer, United Kingdom
- Average wind speed in September: 15.3km/h
The windiest month (with the highest average wind speed) is February (21.2km/h).
The calmest month (with the lowest average wind speed) is June (14.3km/h).
Average humidity in September
Gelligaer, United Kingdom
- Average humidity in September: 85%
The months with the highest relative humidity are November and December (88%).
The month with the lowest relative humidity is April (82%).
Average rainfall in September
Gelligaer, United Kingdom
- Average rainfall in September: 29mm
The wettest month (with the highest rainfall) is November (66mm).
The driest month (with the least rainfall) is May (27mm).
Average rainfall days in September
Gelligaer, United Kingdom
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is November (18.3 days).
The month with the least rainy days is September (12.7 days).
Average snowfall in September
Gelligaer, United Kingdom
- Average snowfall in September: 0mm
The months with the highest snowfall are January, February and November (19mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in September
Gelligaer, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.4 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
Gelligaer, 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 November (Average sunshine: 3h and 42min).
Average sunshine days in September
Gelligaer, United Kingdom
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is April (14.9 days).
The month with the least sunshine days is November (8.5 days).
Average UV index in September
Gelligaer, 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
Gelligaer, United Kingdom
- Average cloud cover in September: 53
The month with the most cloud cover is November (Cloud cover 63).
The month with the least cloud cover is May (Cloud cover 48).
Average visibility in September
Gelligaer, 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).
