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
Riverchapel experiences an average high-temperature of a still refreshing 15.7°C (60.3°F) in September, subtly different from August's 17.1°C (62.8°F). Recording a slight drop from the daily maximum, Riverchapel notes an average low temperature of 11.5°C (52.7°F) in the month of September.Humidity
In September, the average relative humidity is 86%.Rainfall
In September, the rain falls for 9.9 days. Throughout September, 15mm (0.59") of precipitation is accumulated. Throughout the year, there are 139.2 rainfall days, and 222mm (8.74") of precipitation is accumulated.Snowfall
In Riverchapel, Ireland, snow does not fall in March through October.Daylight
In Riverchapel, the average length of the day in September is 12h and 40min.On the first day of September in Riverchapel, sunrise is at 6:36 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 7:04 pm IST.
Sunshine
In Riverchapel, the average sunshine in September is 7.3h.UV index
June through September, with an average maximum UV index of 4, are months with the highest UV index in Riverchapel. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Riverchapel have in September?
What are the months with the highest UV index?
What is the UV index intensity in September?
Average temperature in September
Riverchapel, Ireland
- Average high temperature in September: 15.7°C
The warmest month (with the highest average high temperature) is July (17.2°C).
The months with the lowest average high temperature are January and February (8.3°C).
- Average low temperature in September: 11.5°C
The months with the highest average low temperature are July and August (12.8°C).
The coldest month (with the lowest average low temperature) is February (4.7°C).
Average pressure in September
Riverchapel, Ireland
- Average pressure in September: 1016.1mbar
The month with the highest atmospheric pressure is May (1016.4mbar).
The month with the lowest atmospheric pressure is November (1009mbar).
Average wind speed in September
Riverchapel, Ireland
- Average wind speed in September: 19.8km/h
The windiest month (with the highest average wind speed) is December (27.4km/h).
The calmest month (with the lowest average wind speed) is July (17.5km/h).
Average humidity in September
Riverchapel, Ireland
- Average humidity in September: 86%
The month with the highest relative humidity is July (87%).
The months with the lowest relative humidity are February, March and April (83%).
Average rainfall in September
Riverchapel, Ireland
- Average rainfall in September: 15mm
The wettest month (with the highest rainfall) is November (37mm).
The driest month (with the least rainfall) is May (9mm).
Average rainfall days in September
Riverchapel, Ireland
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is July (13.4 days).
The month with the least rainy days is February (9.8 days).
Average snowfall in September
Riverchapel, Ireland
- Average snowfall in September: 0mm
The month with the highest snowfall is December (4mm).
The months with the least snowfall are March, April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Riverchapel, Ireland
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (1.1 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
Riverchapel, Ireland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is June (Average sunshine: 8h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).
Average sunshine days in September
Riverchapel, Ireland
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is May (17.2 days).
The month with the least sunshine days is July (13.1 days).
Average UV index in September
Riverchapel, Ireland
- Average UV index in September: 4
The months with the highest UV index are June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Riverchapel, Ireland
- Average cloud cover in September: 48
The months with the most cloud cover are February and December (Cloud cover 57).
The months with the least cloud cover are April, May, June and September (Cloud cover 48).
Average visibility in September
Riverchapel, Ireland
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).
