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
September
Weather in September
Temperature
The arrival of September brings an average high-temperature of a still refreshing 15.1°C (59.2°F), nearly identical to August's 17.1°C (62.8°F). In Blackwood, the September nights cool down to an average low of 8.5°C (47.3°F).Humidity
The average relative humidity in September in Blackwood is 90%.Rainfall
In Blackwood, Ireland, in September, during 10.1 rainfall days, 16mm (0.63") of precipitation is typically accumulated. Throughout the year, there are 142.7 rainfall days, and 221mm (8.7") of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In Blackwood, the average length of the day in September is 12h and 41min.On the first day of September in Blackwood, sunrise is at 6:37 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 7:06 pm IST.
Sunshine
In Blackwood, Ireland, the average sunshine in September is 5.6h.UV index
In September, the average daily maximum UV index in Blackwood is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 3 suggests this advice:
Take necessary precautions - Defending against sun damage is advocated. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Blackwood?
What is the average humidity in September in Blackwood?
How many days does it rain in September in Blackwood?
When it does not snow in Blackwood?
How many hours of daylight does Blackwood have in September?
What time are sunrise and sunset in September in Blackwood?
How many hours of sunshine does Blackwood have in September?
What is the UV index intensity in September in Blackwood?
Average temperature in September
Blackwood, Ireland
- Average high temperature in September: 15.1°C
The warmest month (with the highest average high temperature) is July (17.4°C).
The month with the lowest average high temperature is January (6.6°C).
- Average low temperature in September: 8.5°C
The month with the highest average low temperature is July (10.7°C).
The coldest month (with the lowest average low temperature) is February (1.8°C).
Average pressure in September
Blackwood, Ireland
- Average pressure in September: 1015.4mbar
The month with the highest atmospheric pressure is May (1016mbar).
The month with the lowest atmospheric pressure is November (1008.3mbar).
Average wind speed in September
Blackwood, Ireland
- Average wind speed in September: 14.2km/h
The windiest month (with the highest average wind speed) is January (19.7km/h).
The calmest month (with the lowest average wind speed) is July (12.9km/h).
Average humidity in September
Blackwood, Ireland
- Average humidity in September: 90%
The month with the highest relative humidity is December (92%).
The months with the lowest relative humidity are April and May (86%).
Average rainfall in September
Blackwood, Ireland
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is August (26mm).
The driest months (with the least rainfall) are January and October (13mm).
Average rainfall days in September
Blackwood, Ireland
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is October (9.8 days).
Average snowfall in September
Blackwood, Ireland
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (15mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Blackwood, Ireland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.7 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
Blackwood, Ireland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 5h and 4min
The month with the most sunshine is April (Average sunshine: 6h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in September
Blackwood, Ireland
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is December (15.8 days).
The month with the least sunshine days is July (7.8 days).
Average UV index in September
Blackwood, 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).
Average cloud cover in September
Blackwood, Ireland
- Average cloud cover in September: 63
The month with the most cloud cover is July (Cloud cover 69).
The month with the least cloud cover is April (Cloud cover 58).
Average visibility in September
Blackwood, Ireland
- Average visibility in September: 8km
The months with the highest visibility are January, February, March and December (9km).
The month with the lowest visibility is July (7km).
