| < September >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Number of Wet Days (probability of rain on a day)
|Average Sunlight per day
|Average Daylight per day
|Sunny (Cloudy) Daylight Hours
|Sun altitude at solar noon on the 21st day.
- The average temperature in Belfast, Northern Ireland in September is quite mild at 12.5 °C (54.5 °F).
- Afternoons can be very mild with average high temperatures reaching 16 °C (60.8 °F).
- Overnight temperatures are generally a little cool with an average low of 9 °C (48.2 °F).
- In September the variation/ range of daily average temperatures is 7 °C (12.6 °F).
- The weather in September is dryish with rain at intervals. Just 80mm (3.1in) of liquid is transfered across on average 18 days.
- In September the heavens above Belfast, Northern Ireland are dull having an average of merely 3:27 of resplendent sunshine daily.
- The shortest day is 11:34 long and the longest day is 13:45 long with an average length of 12:40.
- There are approximately 8:57 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
- It is sunny approximately 27.8% of daylight hours and cloudy 72.2% of daylight hours.
Check the distance to and compare the Belfast, Northern Ireland September averages with somewhere beginning with:
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Weather Trend Graph for September in Belfast, Northern Ireland, Uk
Navigate to September Weather in Locations Surrounding Belfast, Northern Ireland:
- Tiree, Uk - 209.9 kms (130.5 miles) N
- Malin Head, Ireland - 106.9 kms (66.4 miles) NW
- Ballykelly, Northern Ireland, Uk - 69.1 kms (42.9 miles) NW
- Belfast-Aldergrove, Uk - 1.6 kms (1 miles) NNW
- Belmullet, Ireland - 249.5 kms (155.1 miles) W
- Clones, Ireland - 80.9 kms (50.3 miles) SW
- Collooney, Sligo, Ireland - 153.5 kms (95.4 miles) WSW
- Claremorris, Ireland - 207.8 kms (129.1 miles) WSW
- Dublin, Ireland - 135.3 kms (84.1 miles) S
- Birr, Offaly, Ireland - 205.8 kms (127.9 miles) SSW
- Kilkenny, Ireland - 238.9 kms (148.4 miles) SSW