September weather forecast
Clones, Ireland

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Weather in September

The arrival of September hints at the onset of autumn in Clones. A notable decrease in temperature is recorded with an average high of 14.9°C, down from August’s 16.5°C. This month offers a cool down from the summer months, as the first signs of Autumn start to appear. The chill in the night steadily grows while daylight hours begin to shorten. It is a transitory phase where the leafy city starts tuning to the rhythms of the fall season.

Temperature

Clones experiences an average high-temperature of a still refreshing 14.9°C in September, marking an insignificant shift from 16.5°C in August. Throughout September, Clones registers a consistent average low-temperature of 8.3°C.

Humidity

In September, the average relative humidity is 90%.

Rainfall

In Clones, during September, the rain falls for 13.3 days and regularly aggregates up to 22mm of precipitation. Throughout the year, in Clones, Ireland, there are 191.5 rainfall days, and 381mm of precipitation is accumulated.

Snowfall

April through November are months without snowfall in Clones.

Daylight

In September, the average length of the day in Clones is 12h and 42min.
On the first day of the month, sunrise is at 6:36 am and sunset at 8:21 pm. On the last day of September, sunrise is at 7:28 am and sunset at 7:09 pm IST.

Sunshine

In September, the average sunshine is 4.9h.

UV index

The average daily maximum UV index in September in Clones is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, a regular UV index of 3 translates into these guidelines:
Guard yourself - Precautionary measures against sun damage are advocated. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
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FAQ

What are September temperatures in Clones?

The high-temperature in Clones during September is 14.9°C and the low-temperature is 8.3°C.

What is the average humidity in September in Clones?

In September, the average relative humidity in Clones, Ireland, is 90%.

How much does it rain in Clones in September?

In Clones, Ireland, during September, the rain falls for 13.3 days and regularly aggregates up to 22mm of precipitation.

When it does not snow in Clones?

April through November are months without snowfall in Clones, Ireland.

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

In September, the average day length is 12h and 42min.

When is the sunrise / sunset in September in Clones?

On the first day of September in Clones, sunrise is at 6:36 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 7:09 pm IST.

How many hours of sunshine does Clones have in September?

The average sunshine duration in September is 4.9h.

How high is the UV index in September in Clones?

In Clones, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health 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
Clones, Ireland

Average temperature in September - Clones, Ireland
  • Average high temperature in September: 14.9°C

The warmest month (with the highest average high temperature) is July (17.2°C).
The month with the lowest average high temperature is January (5.9°C).

  • Average low temperature in September: 8.3°C

The month with the highest average low temperature is July (9.9°C).
The coldest month (with the lowest average low temperature) is February (1.3°C).

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Average pressure in September
Clones, Ireland

Average pressure in September - Clones, Ireland
  • Average pressure in September: 1014.4mbar

The month with the highest atmospheric pressure is May (1015.5mbar).
The month with the lowest atmospheric pressure is November (1007.3mbar).

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Average wind speed in September
Clones, Ireland

Average wind speed in September - Clones, Ireland
  • Average wind speed in September: 13.3km/h

The windiest month (with the highest average wind speed) is January (17.8km/h).
The calmest month (with the lowest average wind speed) is July (11.9km/h).

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Average humidity in September
Clones, Ireland

Average humidity in September - Clones, Ireland
  • Average humidity in September: 90%

The months with the highest relative humidity are January, November and December (92%).
The month with the lowest relative humidity is April (86%).

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Average rainfall in September
Clones, Ireland

Average rainfall in September - Clones, Ireland
  • Average rainfall in September: 22mm

The wettest month (with the highest rainfall) is August (48mm).
The driest month (with the least rainfall) is April (21mm).

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Average rainfall days in September
Clones, Ireland

Average rainfall days in September - Clones, Ireland
  • Average rainfall days in September: 13.3 days

The month with the highest number of rainy days is August (20.3 days).
The month with the least rainy days is September (13.3 days).

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Average snowfall in September
Clones, Ireland

Average snowfall in September - Clones, Ireland
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (19mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

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Average snowfall days in September
Clones, Ireland

Average snowfall days in September - Clones, Ireland
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (3.1 days).
The 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
Clones, Ireland

Average daylight in September / Average sunshine in September - Clones, Ireland
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 30min).

  • Average sunshine in September: 4h and 5min

The month with the most sunshine is June (Average sunshine: 6h and 18min).
The months with the least sunshine are January, February and October (Average sunshine: 3h and 30min).

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Average sunshine days in September
Clones, Ireland

Average sunshine days in September - Clones, Ireland
  • Average sunshine days in September: 9.5 days

The month with the most sunshine days is December (12 days).
The month with the least sunshine days is August (5.4 days).

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Average UV index in September
Clones, Ireland

Average UV index in September - Clones, Ireland
  • Average UV index in September: 3

The month with the highest UV index is June (UV index 4).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in September
Clones, Ireland

Average cloud cover in September - Clones, Ireland
  • Average cloud cover in September: 68

The month with the most cloud cover is August (Cloud cover 73).
The month with the least cloud cover is April (Cloud cover 61).

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Average visibility in September
Clones, Ireland

Average visibility in September - Clones, Ireland
  • Average visibility in September: 7km

The month with the highest visibility is March (9km).
The months with the lowest visibility are July, August and September (7km).

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Clones, Ireland

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