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Things to Do in Northern Ireland in September
Real historical weather for Northern Ireland in September: average highs of 16°C and lows of 9°C, with around 115mm of rain (averaged over the last 3 years).
16°C
Average high
9°C
Average low
115mm
Typical rainfall
Real things to do in Northern Ireland in September
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Game of Thrones Northern Ireland Self Guided Coastal Drive Tour
★ 5.0(1 reviews)· 10 hrs
From €13
Guided Scenic Alpaca Trekking Experience Northern Ireland
★ 5.0(153 reviews)· 1h 30m
From €60
Northern Highlights Full-Day Guided Tour in Northern Ireland
★ 4.9(185 reviews)· 8 hrs
From €336
Dublin to Dunluce Castle, Giant's Causeway, Dark Hedge, Belfast
★ 4.9(5,424 reviews)· 12h 30m
From €85
Official Game of Thrones Studio Tour Admission Ticket
★ 4.8(322 reviews)· 3 hrs
From €30
Giant's Causeway with the Titanic Exhibition and the best of Northern Ireland
★ 4.8(1,187 reviews)· 13 hrs
From €95
Dublin to Dunluce Castle, Giant's Causeway and Belfast Day Tour
★ 4.8(518 reviews)· 12h 45m
From €60
Northern Ireland Including Giant's Causeway Rail Tour from Dublin
★ 4.4(329 reviews)· 13 hrs
From €162
Giant’s Causeway and Titanic Experience from Belfast Port
★ 4.3(140 reviews)· 9 hrs
From €77
Giants Causeway, Rope Bridge, Carrickfergus Castle and Dark Hedges Tour
★ 4.2(676 reviews)· 8 hrs
From €28
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FAQs — Northern Ireland in September
Based on real historical data (averaged over the last 3 years), expect highs around 16°C and lows around 9°C, with roughly 115mm of rain.