Belfast Weather in September

What's the weather like in Belfast (N Ireland) in September 2022?

The climate in Belfast during September can be summarized as mild and a little damp.

September is in the fall / autumn in Belfast and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 16°C (61°F), whilst at night 9°C (48°F) is normal.

Belfast weather averages (imperial / metric)
Daytime temperature 15.9°C 60.6°F
Nightly temperature 8.9°C 48°F
Average temperature 12.4°C 54.3°F
Daily sunshine 4.2 hrs
Avg rainfall 94 mm 3.7 ins
Rainy days 17 days
Sea temperature 14.7°C 58.5°F
Humidity 88%
Windspeed 19.1kph 12 mph

On average September is the 5th wettest month of the year in Belfast with around 94mm 3.7 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.

On the flip side this corresponds to an average of 4.2 hours of sunshine per day.

September temperatures in Belfast

Belfast average temperature in September

September rainfall

Belfast average rain in September

September hourly sunshine

Belfast average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Belfast in September 2022.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Belfast weather stats

Belfast weather statistics
Hottest month: July 18.2°C 64.8°F
Driest month: April 63mm 2.5ins
Sunniest month: May 6.5hrs
Coldest month: January 6.7°C 44.1°F
Wettest month: January 101mm 4ins
Map showing location of Belfast (54.58333, -5.93333)

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