September weather forecast and climate
Glastonbury, United Kingdom

Weather in September

September, the first month of the autumn, in Glastonbury, is still a comfortable month, with average temperature fluctuating between 17.7°C (63.9°F) and 10.4°C (50.7°F).

Temperature

In Glastonbury, the average high-temperature in September is relatively the same as in August - a still comfortable 17.7°C (63.9°F). In Glastonbury, in September, the average low-temperature is 10.4°C (50.7°F).

Humidity

The average relative humidity in Glastonbury is 84%.

Rainfall

April and September are months with the least rain in Glastonbury, United Kingdom, when the rain falls for 12.5 days and typically aggregates up to 30mm (1.18") of rain.

Snowfall

In Glastonbury snow does not fall in April through October.

Daylight

The average length of the day in Glastonbury is 12.6h.

Sunshine

In Glastonbury, the average sunshine in September is 7h.

UV index

May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Glastonbury?

In September, in Glastonbury, United Kingdom, the average high-temperature is 17.7°C (63.9°F), and the average low-temperature is 10.4°C (50.7°F).

What is the average humidity in September in Glastonbury?

The average relative humidity in September in Glastonbury is 84%.

How many days does it rain in September in Glastonbury?

In Glastonbury, United Kingdom, in September, during 12.5 rainfall days, 30mm (1.18") of precipitation is typically accumulated.

What is the driest month in Glastonbury?

Months with the least rainfall in Glastonbury, United Kingdom, are April and September Rain falls for 12.5 days and accumulates 30mm (1.18") of rain.

When it does not snow in Glastonbury?

In Glastonbury snow does not fall in April through October.

What is the average length of the day in September in Glastonbury?

The average length of the day in September in Glastonbury, United Kingdom, is 12.6h.

How long on average sun shines in September in Glastonbury?

In Glastonbury, United Kingdom, the average sunshine in September is 7h.

When is the highest UV index in Glastonbury?

May through September, with an average maximum UV index of 4, are months with the highest UV index in Glastonbury, United Kingdom.

What is the UV index reading in September in Glastonbury?

In Glastonbury, United Kingdom, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to the UV radiation.

Average temperature in September
Glastonbury, United Kingdom

Average temperature in September - Glastonbury, United Kingdom
  • Average high temperature in September: 17.7°C

The warmest month (with the highest average high temperature) is July (19.9°C).
The month with the lowest average high temperature is January (7.2°C).

  • Average low temperature in September: 10.4°C

The month with the highest average low temperature is August (12.3°C).
The coldest month (with the lowest average low temperature) is February (2.5°C).

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Average pressure in September
Glastonbury, United Kingdom

Average pressure in September - Glastonbury, United Kingdom
  • Average pressure in September: 1016.9mbar

The month with the highest atmospheric pressure is September (1016.9mbar).
The month with the lowest atmospheric pressure is November (1010.2mbar).

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Average wind speed in September
Glastonbury, United Kingdom

Average wind speed in September - Glastonbury, United Kingdom
  • Average wind speed in September: 13.4km/h

The windiest month (with the highest average wind speed) is February (18.3km/h).
The calmest month (with the lowest average wind speed) is July (12.9km/h).

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Average humidity in September
Glastonbury, United Kingdom

Average humidity in September - Glastonbury, United Kingdom
  • Average humidity in September: 84%

Months with the highest relative humidity are January, November and December (89%).
The month with the lowest relative humidity is July (82%).

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Average rainfall in September
Glastonbury, United Kingdom

Average rainfall in September - Glastonbury, United Kingdom
  • Average rainfall in September: 30mm

The wettest month (with the highest rainfall) is December (67mm).
The driest months (with the least rainfall) are April and September (30mm).

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Average rainfall days in September
Glastonbury, United Kingdom

Average rainfall days in September - Glastonbury, United Kingdom
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is November (16.5 days).
The month with the least rainy days is February (12.4 days).

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Average snowfall in September
Glastonbury, United Kingdom

Average snowfall in September - Glastonbury, United Kingdom
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (25mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

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Average snowfall days in September
Glastonbury, United Kingdom

Average snowfall days in September - Glastonbury, United Kingdom
  • Average snowfall days in September: 0 days

Months with the highest number of snowfall days are January and February (2.7 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Glastonbury, United Kingdom

Average daylight in September / Average sunshine in September - Glastonbury, United Kingdom
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16.5h).
The month with the shortest days is December (Average daylight: 8h).

  • Average sunshine in September: 7h

The month with the most sunshine is July (Average sunshine: 8h).
The month with the least sunshine is November (Average sunshine: 3.8h).

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Average sunshine days in September
Glastonbury, United Kingdom

Average sunshine days in September - Glastonbury, United Kingdom
  • Average sunshine days in September: 15.3 days

The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is November (10.4 days).

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Average UV index in September
Glastonbury, United Kingdom

Average UV index in September - Glastonbury, United Kingdom
  • Average UV index in September: 4

Months with the highest UV index are May, June, July, August and September (UV index 4).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Glastonbury, United Kingdom

Average cloud cover in September - Glastonbury, United Kingdom
  • Average cloud cover in September: 53

The month with the most cloud cover is November (Cloud cover 62).
The month with the least cloud cover is May (Cloud cover 50).

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Average visibility in September
Glastonbury, United Kingdom

Average visibility in September - Glastonbury, United Kingdom
  • Average visibility in September: 8km

Months with the highest visibility are January, February, March, April, May, June and December (9km).
Months with the lowest visibility are July, August, September, October and November (8km).

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