Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The arrival of September records an average high-temperature of a still moderate 14.7°C (58.5°F), closely related to the 15.7°C (60.3°F) observed in August. Knocknacarry records a slight downturn to an average a fresh 11.2°C (52.2°F) during the nights of September.Humidity
The average relative humidity in September is 84%.Rainfall
In Knocknacarry, during September, the rain falls for 20.8 days and regularly aggregates up to 54mm (2.13") of precipitation. Throughout the year, in Knocknacarry, there are 248.7 rainfall days, and 772mm (30.39") of precipitation is accumulated.Snowfall
In Knocknacarry, snow does not fall in May through October.Daylight
In Knocknacarry, the average length of the day in September is 12h and 43min.On the first day of September, sunrise is at 6:31 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 7:02 pm BST.
Sunshine
In Knocknacarry, the average sunshine in September is 6h.UV index
In September, the average daily maximum UV index in Knocknacarry is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 3 during September leads to these advisories:
Take necessary precautions - Defending against sun damage is advocated. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
What is the usual temperature for Knocknacarry in September?
What is the average humidity in September in Knocknacarry?
How many days does it rain in September in Knocknacarry?
When it does not snow in Knocknacarry?
What is the average length of the day in September in Knocknacarry?
When are sunrise and sunset in September in Knocknacarry?
How many hours of sunshine does Knocknacarry have in September?
What is the UV index reading in September in Knocknacarry?
Average temperature in September
Knocknacarry, United Kingdom
- Average high temperature in September: 14.7°C
The warmest month (with the highest average high temperature) is July (15.8°C).
The months with the lowest average high temperature are January and February (7.1°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is August (12.2°C).
The coldest month (with the lowest average low temperature) is February (4.2°C).
Average pressure in September
Knocknacarry, United Kingdom
- Average pressure in September: 1013.6mbar
The month with the highest atmospheric pressure is May (1015.3mbar).
The month with the lowest atmospheric pressure is November (1006.7mbar).
Average wind speed in September
Knocknacarry, United Kingdom
- Average wind speed in September: 22.6km/h
The windiest month (with the highest average wind speed) is January (29.3km/h).
The calmest month (with the lowest average wind speed) is June (17.3km/h).
Average humidity in September
Knocknacarry, United Kingdom
- Average humidity in September: 84%
The months with the highest relative humidity are July and August (86%).
The months with the lowest relative humidity are March, April and May (81%).
Average rainfall in September
Knocknacarry, United Kingdom
- Average rainfall in September: 54mm
The wettest month (with the highest rainfall) is August (93mm).
The driest months (with the least rainfall) are April and May (43mm).
Average rainfall days in September
Knocknacarry, United Kingdom
- Average rainfall days in September: 20.8 days
The month with the highest number of rainy days is August (25.5 days).
The month with the least rainy days is February (16.9 days).
Average snowfall in September
Knocknacarry, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (24mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Knocknacarry, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.4 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
Knocknacarry, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 18min).
The month with the shortest days is December (Average daylight: 7h and 18min).
- Average sunshine in September: 6h and 0min
The month with the most sunshine is June (Average sunshine: 8h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Knocknacarry, United Kingdom
- Average sunshine days in September: 5 days
The month with the most sunshine days is April (9.3 days).
The month with the least sunshine days is August (3.3 days).
Average UV index in September
Knocknacarry, United Kingdom
- 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).
Average cloud cover in September
Knocknacarry, United Kingdom
- Average cloud cover in September: 58
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is April (Cloud cover 52).
Average visibility in September
Knocknacarry, United Kingdom
- Average visibility in September: 9km
The month with the highest visibility is October (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, November and December (9km).
Knocknacarry, United Kingdom
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