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 denotes a barely perceptible change in the average high-temperatures to a still refreshing 15.4°C (59.7°F) from August's 17.2°C (63°F). Nighttime temperature lowers to an average of 8.3°C (46.9°F) in September.Humidity
In Rathwire, Ireland, the average relative humidity in September is 90%.Rainfall
In September, the rain falls for 10.6 days. Throughout September, 18mm (0.71") of precipitation is accumulated. In Rathwire, during the entire year, the rain falls for 153.9 days and collects up to 280mm (11.02") of precipitation.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 41min.On the first day of the month, sunrise is at 6:38 am and sunset at 8:18 pm. On the last day of September, in Rathwire, sunrise is at 7:29 am and sunset at 7:07 pm IST.
Sunshine
In September, the average sunshine in Rathwire is 5.2h.UV index
The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: In September, a regular UV index of 3 translates into these guidelines:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Rathwire?
What is the average humidity in September in Rathwire?
How much does it rain in Rathwire in September?
When it does not snow in Rathwire?
How many hours of daylight does Rathwire have in September?
When are sunrise and sunset in September in Rathwire?
How many hours of sunshine does Rathwire have in September?
How high is the UV index in September in Rathwire?
Average temperature in September
Rathwire, Ireland
- Average high temperature in September: 15.4°C
The warmest month (with the highest average high temperature) is July (17.7°C).
The month with the lowest average high temperature is 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 month (with the lowest average low temperature) is February (1.7°C).
Average pressure in September
Rathwire, Ireland
- Average pressure in September: 1015mbar
The month with the highest atmospheric pressure is May (1015.8mbar).
The month with the lowest atmospheric pressure is November (1007.9mbar).
Average wind speed in September
Rathwire, Ireland
- Average wind speed in September: 14.5km/h
The windiest month (with the highest average wind speed) is January (19.5km/h).
The calmest month (with the lowest average wind speed) is July (13km/h).
Average humidity in September
Rathwire, Ireland
- Average humidity in September: 90%
The month with the highest relative humidity is December (92%).
The month with the lowest relative humidity is April (85%).
Average rainfall in September
Rathwire, Ireland
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is November (32mm).
The driest month (with the least rainfall) is October (16mm).
Average rainfall days in September
Rathwire, Ireland
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is July (16.5 days).
The months with the least rainy days are February and September (10.6 days).
Average snowfall in September
Rathwire, Ireland
- Average snowfall in September: 0mm
The month with the highest snowfall is February (15mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Rathwire, Ireland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.8 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
Rathwire, 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 1min
The month with the most sunshine is June (Average sunshine: 6h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in September
Rathwire, Ireland
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is September (15.9 days).
The month with the least sunshine days is July (10.9 days).
Average UV index in September
Rathwire, Ireland
- Average UV index in September: 3
The months with the highest UV index are June, July 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
Rathwire, Ireland
- Average cloud cover in September: 65
The month with the most cloud cover is July (Cloud cover 71).
The months with the least cloud cover are April, November and December (Cloud cover 61).
Average visibility in September
Rathwire, Ireland
- Average visibility in September: 8km
The months with the highest visibility are January, February, March and December (9km).
The months with the lowest visibility are April, May, June, July, August, September, October and November (8km).
