September weather forecast
Ashdon, United Kingdom

September

Weather in September

The first month of the autumn, September, is still a refreshing month in Ashdon, United Kingdom, with an average temperature fluctuating between 18.5°C (65.3°F) and 11.4°C (52.5°F).

Temperature

Stepping into September, Ashdon records an average high-temperature of a refreshing 18.5°C (65.3°F), almost consistent with August. In the month of September, the average temperature dips to a fresh 11.4°C (52.5°F) during the night.

Humidity

In September, the average relative humidity is 78%.

Rainfall

In Ashdon, during September, the rain falls for 11.3 days and regularly aggregates up to 23mm (0.91") of precipitation. Throughout the year, there are 158.5 rainfall days, and 387mm (15.24") of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in September is 12h and 39min.
On the first day of September, sunrise is at 6:11 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:38 pm BST.

Sunshine

In September, the average sunshine is 6.8h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. When the Sun is at its strongest around midday, find shade and limit exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.

Frequently asked questions

What are the temperatures in September?
The high-temperature, in September, in Ashdon, records 18.5°C (65.3°F), while the low-temperature is 11.4°C (52.5°F).
What is the average humidity in September?
In Ashdon, United Kingdom, the average relative humidity in September is 78%.
How much does it rain in September?
In Ashdon, in September, it is raining for 11.3 days, with typically 23mm (0.91") of accumulated precipitation.
When it does not snow?
In Ashdon, snow does not fall in May through October.
What is the average length of the day in September?
The average day length in September is 12h and 39min.
When is the sunrise / sunset in September?
On the first day of September, sunrise is at 6:11 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:38 pm BST.
How long on average sun shines in September?
In September, the average sunshine duration is 6.8h.
What is the UV index intensity in September?
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Ashdon, United Kingdom
  • Average high temperature in September: 18.5°C

The warmest months (with the highest average high temperature) are July and August (21.3°C).
The month with the lowest average high temperature is January (6.3°C).

  • Average low temperature in September: 11.4°C

The month with the highest average low temperature is August (13.5°C).
The coldest month (with the lowest average low temperature) is January (1.8°C).

Average pressure in September
Ashdon, United Kingdom
  • Average pressure in September: 1016.7mbar

The months with the highest atmospheric pressure are May and September (1016.7mbar).
The month with the lowest atmospheric pressure is November (1010.4mbar).

Average wind speed in September
Ashdon, United Kingdom
  • Average wind speed in September: 13.5km/h

The windiest months (with the highest average wind speed) are February and December (18.6km/h).
The calmest month (with the lowest average wind speed) is July (13km/h).

Average humidity in September
Ashdon, United Kingdom
  • Average humidity in September: 78%

The month with the highest relative humidity is December (90%).
The month with the lowest relative humidity is August (74%).

Average rainfall in September
Ashdon, United Kingdom
  • Average rainfall in September: 23mm

The wettest month (with the highest rainfall) is December (44mm).
The driest month (with the least rainfall) is April (21mm).

Average rainfall days in September
Ashdon, United Kingdom
  • Average rainfall days in September: 11.3 days

The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is February (10.7 days).

Average snowfall in September
Ashdon, United Kingdom
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (30mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in September
Ashdon, United Kingdom
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (3.8 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
Ashdon, United Kingdom
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).

  • Average sunshine in September: 6h and 5min

The month with the most sunshine is August (Average sunshine: 7h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).

Average sunshine days in September
Ashdon, United Kingdom
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is September (16.5 days).
The month with the least sunshine days is July (12.1 days).

Average UV index in September
Ashdon, United Kingdom
  • Average UV index in September: 4

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in September
Ashdon, United Kingdom
  • Average cloud cover in September: 50

The month with the most cloud cover is February (Cloud cover 64).
The months with the least cloud cover are August and September (Cloud cover 50).

Average visibility in September
Ashdon, United Kingdom
  • Average visibility in September: 9km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).

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