September weather forecastLes Creux, Jersey
September
Weather in September
September weather in Les Creux, Jersey, starts showing signs of autumn with temperatures tracing back between 15.6°C (60.1°F) and 17.4°C (63.3°F). This slight dip signals the imminent end of the peak summer season. A slight reduction in the amount of daylight hours further confirms the onset of fall. Despite the decrease, the city still enjoys 12.6 daylight hours, granting ample opportunities for sightseeing and other outdoor activities. Embracing the transitional weather of September can lead to enjoying the best of both summer and autumn atmospheres.Temperature
A minimal variation is noted in Les Creux's average high-temperature at the onset of September, reaching a still enjoyable 17.4°C (63.3°F) from August's 18.1°C (64.6°F). The nights of September in Les Creux anticipate a slight dip from daytime high temperatures, settling to an average low-temperature of 15.6°C (60.1°F).Humidity
The average relative humidity in September is 79%.Rainfall
In Les Creux, in September, during 13.4 rainfall days, 29mm (1.14") of precipitation is typically accumulated. Throughout the year, there are 191.6 rainfall days, and 531mm (20.91") of precipitation is accumulated.Snowfall
February, April through October and December are months without snowfall in Les Creux.Daylight
In Les Creux, the average length of the day in September is 12h and 35min.On the first day of September in Les Creux, Jersey, sunrise is at 06:25 and sunset at 19:51. On the last day of the month, sunrise is at 07:07 and sunset at 18:49 BST.
Sunshine
The average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index in Les Creux is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Take necessary precautions - Protection from skin and eye injury is mandatory. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Les Creux, Jersey
- Average high temperature in September: 17.4°C
The warmest month (with the highest average high temperature) is August (18.1°C).
The month with the lowest average high temperature is February (9°C).
- Average low temperature in September: 15.6°C
The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is February (6.9°C).
Average pressure in September
Les Creux, Jersey
- Average pressure in September: 1018mbar
The month with the highest atmospheric pressure is September (1018mbar).
The month with the lowest atmospheric pressure is November (1011.8mbar).
Average wind speed in September
Les Creux, Jersey
- Average wind speed in September: 23.9km/h
The windiest month (with the highest average wind speed) is December (34.3km/h).
The calmest month (with the lowest average wind speed) is July (20.6km/h).
Average humidity in September
Les Creux, Jersey
- Average humidity in September: 79%
The month with the highest relative humidity is June (84%).
The months with the lowest relative humidity are February, November and December (78%).
Average rainfall in September
Les Creux, Jersey
- Average rainfall in September: 29mm
The wettest month (with the highest rainfall) is November (74mm).
The driest months (with the least rainfall) are May and July (27mm).
Average rainfall days in September
Les Creux, Jersey
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is November (20.7 days).
The month with the least rainy days is May (12.7 days).
Average snowfall in September
Les Creux, Jersey
- Average snowfall in September: 0mm
The months with the highest snowfall are January, March and November (1mm).
The months with the least snowfall are February, April, May, June, July, August, September, October and December (0mm).
Average snowfall days in September
Les Creux, Jersey
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are February and March (0.3 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
Les Creux, Jersey
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Les Creux, Jersey
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is May (15.3 days).
The month with the least sunshine days is November (6.5 days).
Average UV index in September
Les Creux, Jersey
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 2).
Average cloud cover in September
Les Creux, Jersey
- Average cloud cover in September: 39
The months with the most cloud cover are January, November and December (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in September
Les Creux, Jersey
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
