September weather forecastStreamstown, Ireland
September
Weather in September
September, the first month of the autumn in Streamstown, is also a moderate month, with an average temperature varying between 15.4°C (59.7°F) and 8.3°C (46.9°F).Temperature
The average high-temperature during September is a still refreshing 15.4°C (59.7°F), almost matching the conditions of the preceding month. Nighttime temperature in Streamstown dips to a mean of 8.3°C (46.9°F) during September.Humidity
In Streamstown, the average relative humidity in September is 90%.Rainfall
In September, in Streamstown, the rain falls for 10.6 days. Throughout September, 19mm (0.75") of precipitation is accumulated. Throughout the year, there are 151.3 rainfall days, and 265mm (10.43") of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In Streamstown, Ireland, the average length of the day in September is 12h and 41min.On the first day of September, sunrise is at 6:40 am and sunset at 8:19 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 5.2h.UV index
The average daily maximum UV index in September in Streamstown is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the UV index of 3 transforms into the following advice:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Streamstown, Ireland
- Average high temperature in September: 15.4°C
The warmest month (with the highest average high temperature) is July (17.7°C).
The months with the lowest average high temperature are January and December (6.9°C).
- Average low temperature in September: 8.3°C
The month with the highest average low temperature is July (10.3°C).
The coldest months (with the lowest average low temperature) are January and February (1.8°C).
Average pressure in September
Streamstown, Ireland
- Average pressure in September: 1015.2mbar
The month with the highest atmospheric pressure is May (1015.9mbar).
The month with the lowest atmospheric pressure is November (1008mbar).
Average wind speed in September
Streamstown, Ireland
- Average wind speed in September: 14.2km/h
The windiest months (with the highest average wind speed) are January, February and December (18.9km/h).
The calmest month (with the lowest average wind speed) is July (12.7km/h).
Average humidity in September
Streamstown, Ireland
- Average humidity in September: 90%
The month with the highest relative humidity is December (92%).
The months with the lowest relative humidity are March, April and May (86%).
Average rainfall in September
Streamstown, Ireland
- Average rainfall in September: 19mm
The wettest month (with the highest rainfall) is November (32mm).
The driest month (with the least rainfall) is January (16mm).
Average rainfall days in September
Streamstown, Ireland
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is September (10.6 days).
Average snowfall in September
Streamstown, Ireland
- Average snowfall in September: 0mm
The months with the highest snowfall are February and November (15mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Streamstown, Ireland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.5 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
Streamstown, Ireland
- Average daylight in September: 12h and 42min
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 12min
The month with the most sunshine is June (Average sunshine: 6h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in September
Streamstown, Ireland
- Average sunshine days in September: 14.4 days
The month with the most sunshine days is December (15.7 days).
The month with the least sunshine days is July (10.1 days).
Average UV index in September
Streamstown, Ireland
- Average UV index in September: 3
The months with the highest UV index are May and June (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
Streamstown, Ireland
- Average cloud cover in September: 66
The month with the most cloud cover is July (Cloud cover 72).
The month with the least cloud cover is April (Cloud cover 60).
Average visibility in September
Streamstown, Ireland
- Average visibility in September: 8km
The months with the highest visibility are February, March and December (9km).
The month with the lowest visibility is July (7km).
