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
Farnham registers an average high-temperature of an enjoyable 18.5°C (65.3°F) at the commencement of September, closely related to the preceding month. In September, Farnham experiences a temperature dip to an average of 10.5°C (50.9°F) at night.Humidity
In September, the average relative humidity is 80%.Rainfall
April and September are months with the least rain when the rain falls for 9.8 days and typically aggregates up to 14mm (0.55") of rain.Snowfall
In Farnham, snow does not fall in April through October.Daylight
In Farnham, the average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 6:17 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:42 pm BST.
Sunshine
In Farnham, the average sunshine in September is 7.4h.UV index
In September, the average daily maximum UV index in Farnham is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Be vigilant - Preventing sunburn is recommended. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
What are September temperatures in Farnham?
What is the average humidity in September in Farnham?
What is the driest month in Farnham?
How many days does it rain in September in Farnham?
When it does not snow in Farnham?
How many hours of daylight does Farnham have in September?
When are sunrise and sunset in September in Farnham?
How long on average sun shines in September in Farnham?
How high is the UV index in September in Farnham?
Average temperature in September
Farnham, United Kingdom
- Average high temperature in September: 18.5°C
The warmest month (with the highest average high temperature) is July (21.4°C).
The month with the lowest average high temperature is January (6.8°C).
- Average low temperature in September: 10.5°C
The month with the highest average low temperature is August (12.8°C).
The coldest month (with the lowest average low temperature) is January (2.1°C).
Average pressure in September
Farnham, United Kingdom
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is September (1017mbar).
The month with the lowest atmospheric pressure is November (1010.5mbar).
Average wind speed in September
Farnham, United Kingdom
- Average wind speed in September: 13.1km/h
The windiest month (with the highest average wind speed) is February (17.9km/h).
The calmest month (with the lowest average wind speed) is July (12.9km/h).
Average humidity in September
Farnham, United Kingdom
- Average humidity in September: 80%
The months with the highest relative humidity are January and December (89%).
The months with the lowest relative humidity are July and August (78%).
Average rainfall in September
Farnham, United Kingdom
- Average rainfall in September: 14mm
The wettest month (with the highest rainfall) is June (30mm).
The driest months (with the least rainfall) are April and September (14mm).
Average rainfall days in September
Farnham, United Kingdom
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is September (9.8 days).
Average snowfall in September
Farnham, United Kingdom
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (9mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Farnham, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.2 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
Farnham, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is July (Average sunshine: 8h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
Farnham, United Kingdom
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is September (17.2 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in September
Farnham, United Kingdom
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Farnham, United Kingdom
- Average cloud cover in September: 48
The month with the most cloud cover is November (Cloud cover 61).
The months with the least cloud cover are April, July and September (Cloud cover 48).
Average visibility in September
Farnham, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (9km).
The month with the lowest visibility is November (8km).
Farnham, United Kingdom
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