September weather forecast
Ponthirwaun, United Kingdom

September

Weather in September

The first month of the autumn, September, is also a moderate month in Ponthirwaun, United Kingdom, with temperature in the range of an average high of 15.9°C (60.6°F) and an average low of 11.9°C (53.4°F).

Temperature

In September, Ponthirwaun's weather conditions record an average high-temperature of a mild 15.9°C (60.6°F), demonstrating little divergence from the preceding month. Ponthirwaun in September experiences a minor decline in temperature, with an average low of 11.9°C (53.4°F) at night.

Humidity

In September, the average relative humidity is 84%.

Rainfall

In Ponthirwaun, in September, during 14.8 rainfall days, 32mm (1.26") of precipitation is typically accumulated. Throughout the year, there are 198.1 rainfall days, and 426mm (16.77") of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

In September, the average length of the day is 12h and 39min.
On the first day of September, sunrise is at 6:30 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 6:57 pm BST.

Sunshine

The average sunshine in September is 6.7h.

UV index

May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In September, a daily UV index of 4 turns into the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.

Frequently asked questions

What is the usual temperature for Ponthirwaun in September?
The average high-temperature, in September, in Ponthirwaun, is 15.9°C (60.6°F), while the average low-temperature is 11.9°C (53.4°F).
What is the average humidity in September?
In September, the average relative humidity is 84%.
How many days does it rain in September?
In Ponthirwaun, in September, during 14.8 rainfall days, 32mm (1.26") of precipitation is typically accumulated.
When it does not snow?
In Ponthirwaun, snow does not fall in April 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 in Ponthirwaun?
On the first day of September, sunrise is at 6:30 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 6:57 pm BST.
How many hours of sunshine does Ponthirwaun have in September?
The average sunshine duration in September is 6.7h.
What is the month with the highest UV index?
May through September, with an average maximum UV index of 4, are months with the highest UV index.
How high is the UV index in September?
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
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 - Ponthirwaun, United Kingdom
Average temperature in September
Ponthirwaun, United Kingdom
  • Average high temperature in September: 15.9°C

The warmest month (with the highest average high temperature) is July (17.6°C).
The month with the lowest average high temperature is February (7.7°C).

  • Average low temperature in September: 11.9°C

The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is February (4.3°C).

Average pressure in September - Ponthirwaun, United Kingdom
Average pressure in September
Ponthirwaun, United Kingdom
  • Average pressure in September: 1016.4mbar

The month with the highest atmospheric pressure is May (1016.5mbar).
The month with the lowest atmospheric pressure is November (1009.4mbar).

Average wind speed in September - Ponthirwaun, United Kingdom
Average wind speed in September
Ponthirwaun, United Kingdom
  • Average wind speed in September: 18.3km/h

The windiest month (with the highest average wind speed) is December (24.6km/h).
The calmest month (with the lowest average wind speed) is June (15.2km/h).

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

The months with the highest relative humidity are January, July, August and December (85%).
The months with the lowest relative humidity are April and May (82%).

Average rainfall in September - Ponthirwaun, United Kingdom
Average rainfall in September
Ponthirwaun, United Kingdom
  • Average rainfall in September: 32mm

The wettest month (with the highest rainfall) is November (53mm).
The driest month (with the least rainfall) is May (20mm).

Average rainfall days in September - Ponthirwaun, United Kingdom
Average rainfall days in September
Ponthirwaun, United Kingdom
  • Average rainfall days in September: 14.8 days

The month with the highest number of rainy days is November (20.1 days).
The month with the least rainy days is April (13.5 days).

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

The month with the highest snowfall is December (6mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

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

The months with the highest number of snowfall days are February and December (1.3 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 - Ponthirwaun, United Kingdom
Average daylight in September /
Average sunshine in September
Ponthirwaun, 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 4min

The month with the most sunshine is May (Average sunshine: 8h and 0min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).

Average sunshine days in September - Ponthirwaun, United Kingdom
Average sunshine days in September
Ponthirwaun, United Kingdom
  • Average sunshine days in September: 11.6 days

The month with the most sunshine days is April (14.3 days).
The month with the least sunshine days is November (6.8 days).

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

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

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

The month with the most cloud cover is December (Cloud cover 65).
The month with the least cloud cover is May (Cloud cover 48).

Average visibility in September - Ponthirwaun, United Kingdom
Average visibility in September
Ponthirwaun, United Kingdom
  • Average visibility in September: 10km

The months with the highest visibility are February, March, September, October and November (10km).
The months with the lowest visibility are January, April, May, June, July, August and December (9km).

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