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
September experiences an average high-temperature of a still refreshing 15°C (59°F), barely different from August's 16.9°C (62.4°F). September sees the temperature falling to a mean low of 8.2°C (46.8°F).Humidity
In September, the average relative humidity is 88%.Rainfall
In September, the rain falls for 16.3 days. Throughout September, 39mm (1.54") of precipitation is accumulated. In Calthwaite, United Kingdom, during the entire year, the rain falls for 211.1 days and collects up to 534mm (21.02") of precipitation.Snowfall
May through October are months without snowfall in Calthwaite.Daylight
In September, the average length of the day is 12h and 43min.On the first day of September, sunrise is at 6:19 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:49 pm BST.
Sunshine
In September, the average sunshine is 5.9h.UV index
In Calthwaite, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The UV index of 3 in September translates into these instructions:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Calthwaite?
What is the average humidity in September in Calthwaite?
How many days does it rain in September in Calthwaite?
When it does not snow in Calthwaite?
What is the average length of the day in September in Calthwaite?
When is the sunrise / sunset in September in Calthwaite?
How many hours of sunshine does Calthwaite have in September?
How high is the UV index in September in Calthwaite?
Average temperature in September
Calthwaite, United Kingdom
- Average high temperature in September: 15°C
The warmest month (with the highest average high temperature) is July (17.6°C).
The month with the lowest average high temperature is January (4.9°C).
- Average low temperature in September: 8.2°C
The month with the highest average low temperature is August (9.9°C).
The coldest month (with the lowest average low temperature) is January (0.8°C).
Average pressure in September
Calthwaite, United Kingdom
- Average pressure in September: 1014.3mbar
The month with the highest atmospheric pressure is May (1015.9mbar).
The month with the lowest atmospheric pressure is November (1007.8mbar).
Average wind speed in September
Calthwaite, United Kingdom
- Average wind speed in September: 13.6km/h
The windiest month (with the highest average wind speed) is December (17.8km/h).
The calmest month (with the lowest average wind speed) is July (12.2km/h).
Average humidity in September
Calthwaite, United Kingdom
- Average humidity in September: 88%
The months with the highest relative humidity are January, November and December (90%).
The month with the lowest relative humidity is April (83%).
Average rainfall in September
Calthwaite, United Kingdom
- Average rainfall in September: 39mm
The wettest month (with the highest rainfall) is August (62mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in September
Calthwaite, United Kingdom
- Average rainfall days in September: 16.3 days
The month with the highest number of rainy days is July (21.8 days).
The month with the least rainy days is February (14.3 days).
Average snowfall in September
Calthwaite, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (26mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Calthwaite, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Calthwaite, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 12min).
The month with the shortest days is December (Average daylight: 7h and 18min).
- Average sunshine in September: 5h and 5min
The months with the most sunshine are April and May (Average sunshine: 7h and 12min).
The months with the least sunshine are January and February (Average sunshine: 3h and 48min).
Average sunshine days in September
Calthwaite, United Kingdom
- Average sunshine days in September: 9 days
The month with the most sunshine days is October (11.4 days).
The month with the least sunshine days is August (6.2 days).
Average UV index in September
Calthwaite, 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, November and December (UV index 2).
Average cloud cover in September
Calthwaite, United Kingdom
- Average cloud cover in September: 61
The months with the most cloud cover are January and August (Cloud cover 63).
The month with the least cloud cover is April (Cloud cover 52).
Average visibility in September
Calthwaite, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are March, April and May (9km).
The months with the lowest visibility are January, February, June, July, August, September, October, November and December (8km).
