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
September observes an average high-temperature of a mild 15.3°C (59.5°F), marking an insignificant difference from August's 17°C (62.6°F). The temperature in Llanwnog lowers to an average of 8.1°C (46.6°F) during September nights.Humidity
In September, the average relative humidity is 90%.Rainfall
The month with the least rainfall in Llanwnog is September, when the rain falls for 13.2 days and typically collects 34mm (1.34") of precipitation.Snowfall
June through October are months without snowfall in Llanwnog, United Kingdom.Daylight
The average length of the day in September is 12h and 40min.On the first day of September, sunrise is at 6:25 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 6:52 pm BST.
Sunshine
In September, the average sunshine in Llanwnog, United Kingdom, is 5.4h.UV index
In September, the average daily maximum UV index in Llanwnog is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In September, the average maximum UV index of 3 translates into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Frequently asked questions
What are the temperatures in Llanwnog in September?
What is the average humidity in September in Llanwnog?
What is the driest month in Llanwnog?
How much does it rain in Llanwnog in September?
When it does not snow in Llanwnog?
What is the average length of the day in September in Llanwnog?
When is the sunrise / sunset in September in Llanwnog?
How long on average sun shines in September in Llanwnog?
How high is the UV index in September in Llanwnog?
Average temperature in September
Llanwnog, United Kingdom
- Average high temperature in September: 15.3°C
The warmest month (with the highest average high temperature) is July (17.7°C).
The month with the lowest average high temperature is January (5.3°C).
- Average low temperature in September: 8.1°C
The month with the highest average low temperature is August (10.2°C).
The coldest months (with the lowest average low temperature) are January and February (0.8°C).
Average pressure in September
Llanwnog, United Kingdom
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is May (1016.4mbar).
The month with the lowest atmospheric pressure is November (1009.5mbar).
Average wind speed in September
Llanwnog, United Kingdom
- Average wind speed in September: 13.3km/h
The windiest month (with the highest average wind speed) is February (18.9km/h).
The calmest month (with the lowest average wind speed) is June (12.6km/h).
Average humidity in September
Llanwnog, United Kingdom
- Average humidity in September: 90%
The months with the highest relative humidity are November and December (92%).
The months with the lowest relative humidity are April and May (85%).
Average rainfall in September
Llanwnog, United Kingdom
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is June (68mm).
The driest month (with the least rainfall) is September (34mm).
Average rainfall days in September
Llanwnog, United Kingdom
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is February (11.5 days).
Average snowfall in September
Llanwnog, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (67mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in September
Llanwnog, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Llanwnog, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in September: 5h and 2min
The month with the most sunshine is May (Average sunshine: 6h and 24min).
The month with the least sunshine is November (Average sunshine: 2h and 54min).
Average sunshine days in September
Llanwnog, United Kingdom
- Average sunshine days in September: 13.4 days
The month with the most sunshine days is September (13.4 days).
The month with the least sunshine days is July (8.4 days).
Average UV index in September
Llanwnog, United Kingdom
- Average UV index in September: 3
The months with the highest UV index are May, June and August (UV index 4).
The months with the lowest UV index are January, February, March, April, November and December (UV index 2).
Average cloud cover in September
Llanwnog, United Kingdom
- Average cloud cover in September: 65
The month with the most cloud cover is November (Cloud cover 72).
The months with the least cloud cover are April and May (Cloud cover 60).
Average visibility in September
Llanwnog, United Kingdom
- Average visibility in September: 7km
The months with the highest visibility are January, February, March, April, May, June, July, November and December (8km).
The months with the lowest visibility are August, September and October (7km).
Llanwnog, United Kingdom
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