September weather forecastMorfa Nefyn, United Kingdom
September
Weather in September
September, the first month of the autumn in Morfa Nefyn, is also a moderate month, with an average temperature varying between 15.4°C (59.7°F) and 13.4°C (56.1°F).Temperature
As Morfa Nefyn steps into September, the average high-temperature is measured at a still refreshing 15.4°C (59.7°F), displaying minor differences from August's 16.3°C (61.3°F). A consistent average low of 13.4°C (56.1°F) is noted in Morfa Nefyn throughout September, only a small step down from its daytime high.Humidity
In September, the average relative humidity is 82%.Rainfall
In September, the rain falls for 17.9 days. Throughout September, 58mm (2.28") of precipitation is accumulated. Throughout the year, in Morfa Nefyn, United Kingdom, there are 222.9 rainfall days, and 765mm (30.12") of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
The average length of the day in September is 12h and 40min.On the first day of September, sunrise is at 6:29 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 6:57 pm BST.
Sunshine
The average sunshine in September in Morfa Nefyn is 6.7h.UV index
In Morfa Nefyn, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: The UV index of 3 during September leads to these advisories:
Take precautions - Protection against sun damage is advised. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Morfa Nefyn, United Kingdom
- Average high temperature in September: 15.4°C
The warmest month (with the highest average high temperature) is August (16.3°C).
The month with the lowest average high temperature is February (7.7°C).
- Average low temperature in September: 13.4°C
The month with the highest average low temperature is August (14.1°C).
The coldest month (with the lowest average low temperature) is February (5.7°C).
Average pressure in September
Morfa Nefyn, United Kingdom
- Average pressure in September: 1015.8mbar
The month with the highest atmospheric pressure is May (1016.2mbar).
The month with the lowest atmospheric pressure is November (1008.9mbar).
Average wind speed in September
Morfa Nefyn, United Kingdom
- Average wind speed in September: 22.6km/h
The windiest month (with the highest average wind speed) is December (30.9km/h).
The calmest month (with the lowest average wind speed) is June (18km/h).
Average humidity in September
Morfa Nefyn, United Kingdom
- Average humidity in September: 82%
The months with the highest relative humidity are June, July and August (84%).
The month with the lowest relative humidity is November (79%).
Average rainfall in September
Morfa Nefyn, United Kingdom
- Average rainfall in September: 58mm
The wettest month (with the highest rainfall) is November (97mm).
The driest month (with the least rainfall) is April (37mm).
Average rainfall days in September
Morfa Nefyn, United Kingdom
- Average rainfall days in September: 17.9 days
The month with the highest number of rainy days is December (23.1 days).
The month with the least rainy days is April (14.5 days).
Average snowfall in September
Morfa Nefyn, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (7mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Morfa Nefyn, United Kingdom
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Morfa Nefyn, United Kingdom
- Average daylight in September: 12h and 42min
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 42min).
- Average sunshine in September: 6h and 42min
The month with the most sunshine is May (Average sunshine: 8h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Morfa Nefyn, United Kingdom
- Average sunshine days in September: 9.4 days
The months with the most sunshine days are April and May (13.5 days).
The month with the least sunshine days is December (4.5 days).
Average UV index in September
Morfa Nefyn, 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 and December (UV index 2).
Average cloud cover in September
Morfa Nefyn, United Kingdom
- Average cloud cover in September: 54
The month with the most cloud cover is December (Cloud cover 67).
The month with the least cloud cover is May (Cloud cover 47).
Average visibility in September
Morfa Nefyn, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
