September weather forecast
Clonmel, Ireland

englishespañol中文
Share

Weather in September

In Clonmel, September marks the transition from the heat of summer to the soothing mildness of autumn. A distinct feature in September is a substantial dip in the average temperature, dropping to a cooler 15.7°C (60.3°F). The arrival of fall is echoed in the shortening daylight hours and an increase in cloud presence. A more significant drop in temperature and escalating rainfall frequency appear imminent as October approaches.

Temperature

With the transition into September, Clonmel notes an average high-temperature of a still refreshing 15.7°C (60.3°F), closely resembling August. Clonmel observes an average low-temperature of 8.4°C (47.1°F) during September.

Humidity

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

Rainfall

January, March and September are months with the least rain in Clonmel, Ireland, when the rain falls for 11.3 days and typically aggregates up to 22mm (0.87") of rain.

Snowfall

In Clonmel, snow does not fall in April through October.

Daylight

In Clonmel, Ireland, the average length of the day in September is 12h and 39min.
On the first day of September in Clonmel, Ireland, sunrise is at 6:42 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:09 pm IST.

Sunshine

In September, the average sunshine is 5.3h.

UV index

The average daily maximum UV index in September in Clonmel, Ireland, is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, a regular UV index of 3 translates into these guidelines:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
[Resources]

Frequently asked questions

What is the temperature in September in Clonmel?

In Clonmel, in September, the average high-temperature is 15.7°C (60.3°F), and the average low-temperature is 8.4°C (47.1°F).

What is the average humidity in September in Clonmel?

In September, the average relative humidity is 90%.

What is the driest month in Clonmel?

The months with the least rainfall in Clonmel are January, March and September Rain falls for 11.3 days and accumulates 22mm (0.87") of rain.

How many days does it rain in September in Clonmel?

In September, in Clonmel, the rain falls for 11.3 days. Throughout September, 22mm (0.87") of precipitation is accumulated.

When it does not snow in Clonmel?

In Clonmel, snow does not fall in April through October.

How many hours of daylight does Clonmel have in September?

In Clonmel, the average day length in September is 12h and 39min.

When are sunrise and sunset in September in Clonmel?

In September, on the first day of the month, sunrise is at 6:42 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:09 pm IST.

How many hours of sunshine does Clonmel have in September?

The average sunshine duration in September is 5.3h.

What is the UV index reading in September in Clonmel?

In September, the average daily maximum UV index in Clonmel, Ireland, is 3. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
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
Clonmel, Ireland

Average temperature in September - Clonmel, Ireland
  • Average high temperature in September: 15.7°C

The warmest month (with the highest average high temperature) is July (17.8°C).
The month with the lowest average high temperature is January (7.1°C).

  • Average low temperature in September: 8.4°C

The month with the highest average low temperature is July (10.4°C).
The coldest month (with the lowest average low temperature) is February (1.5°C).

[Resources]

Average pressure in September
Clonmel, Ireland

Average pressure in September - Clonmel, Ireland
  • Average pressure in September: 1015.8mbar

The month with the highest atmospheric pressure is May (1016.2mbar).
The month with the lowest atmospheric pressure is November (1008.6mbar).

[Resources]

Average wind speed in September
Clonmel, Ireland

Average wind speed in September - Clonmel, Ireland
  • Average wind speed in September: 13.5km/h

The windiest month (with the highest average wind speed) is February (18.2km/h).
The calmest month (with the lowest average wind speed) is July (12.6km/h).

[Resources]

Average humidity in September
Clonmel, Ireland

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

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

[Resources]

Average rainfall in September
Clonmel, Ireland

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

The wettest month (with the highest rainfall) is November (45mm).
The driest months (with the least rainfall) are January, March and September (22mm).

[Resources]

Average rainfall days in September
Clonmel, Ireland

Average rainfall days in September - Clonmel, Ireland
  • Average rainfall days in September: 11.3 days

The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is January (10.7 days).

[Resources]

Average snowfall in September
Clonmel, Ireland

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

The month with the highest snowfall is January (9mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

[Resources]

Average snowfall days in September
Clonmel, Ireland

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

The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

Average daylight in September /
Average sunshine in September
Clonmel, Ireland

Average daylight in September / Average sunshine in September - Clonmel, Ireland
  • 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: 5h and 2min

The months with the most sunshine are April and June (Average sunshine: 5h and 36min).
The month with the least sunshine is November (Average sunshine: 3h and 42min).

[Resources]

Average sunshine days in September
Clonmel, Ireland

Average sunshine days in September - Clonmel, Ireland
  • Average sunshine days in September: 13.9 days

The month with the most sunshine days is December (17.3 days).
The month with the least sunshine days is July (7.2 days).

[Resources]

Average UV index in September
Clonmel, Ireland

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

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

[Resources]

Average cloud cover in September
Clonmel, Ireland

Average cloud cover in September - Clonmel, Ireland
  • Average cloud cover in September: 67

The month with the most cloud cover is July (Cloud cover 72).
The month with the least cloud cover is April (Cloud cover 61).

[Resources]

Average visibility in September
Clonmel, Ireland

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

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

[Resources]

Clonmel, Ireland

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location