Weather in September
Temperature
Swords experiences a transition to a still enjoyable 17°C (62.6°F) in average high-temperatures with the arrival of September, not greatly differing from August's 19.2°C (66.6°F). September's nights in Swords observe an average temperature of 9.8°C (49.6°F).Humidity
In Swords, the average relative humidity in September is 71.5%.Rainfall
In Swords, Ireland, in September, it is raining for 15 days, with typically 60mm (2.36") of accumulated precipitation. Throughout the year, in Swords, Ireland, there are 191 rainfall days, and 758mm (29.84") of precipitation is accumulated.Snowfall
In Swords, Ireland, snow does not fall in June through October.Daylight
The average length of the day in September in Swords, Ireland, is 12h and 41min.On the first day of September in Swords, sunrise is at 6:35 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 7:03 pm IST.
Sunshine
In September, the average sunshine in Swords is 4.3h.Frequently asked questions
What are the temperatures in Swords in September?
What is the average humidity in September in Swords?
How much does it rain in Swords in September?
When it does not snow in Swords?
What is the average length of the day in September in Swords?
When is the sunrise / sunset in September in Swords?
How many hours of sunshine does Swords have in September?
Average temperature in September
Swords, Ireland
- Average high temperature in September: 17°C
The warmest month (with the highest average high temperature) is July (19.5°C).
The month with the lowest average high temperature is January (8.1°C).
- Average low temperature in September: 9.8°C
The month with the highest average low temperature is July (11.7°C).
The coldest month (with the lowest average low temperature) is February (2.3°C).
Average humidity in September
Swords, Ireland
- Average humidity in September: 71.5%
The month with the highest relative humidity is December (83.1%).
The month with the lowest relative humidity is May (68%).
Average rainfall in September
Swords, Ireland
- Average rainfall in September: 59.5mm
The wettest month (with the highest rainfall) is October (79mm).
The driest month (with the least rainfall) is February (48.8mm).
Average rainfall days in September
Swords, Ireland
- Average rainfall days in September: 15 days
The months with the highest number of rainy days are January, March, October, November and December (17 days).
The month with the least rainy days is June (14 days).
Average snowfall days in September
Swords, Ireland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Swords, 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: 4h and 2min
The month with the most sunshine is May (Average sunshine: 6h and 12min).
The month with the least sunshine is December (Average sunshine: 1h and 42min).
Swords, Ireland
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