Month guide · Belfast · United Kingdom
Belfast in September
What September is really like in Belfast: weather, crowds, prices, events and what to pack.
Updated By the AMZBooking editorial team
Photo: GrimsbyT, CC BY-SA 4.0
Quick answer
September is one of the best months to visit Belfast. Expect average highs of 17°C (63°F), lows of 9°C (48°F), about 12 rainy days and roughly 12.6 hours of daylight. Settled early-autumn weather is common and crowds drop after the school holidays.
Key facts
- Average high / low
- 17°C (63°F) / 9°C (48°F)
- Rainy days
- About 12
- Daylight
- About 12.6 hours
- Crowds
- Moderate
- Hotel prices
- Average
Weather in September
September is the 4th-warmest month in Belfast: days average 17°C (63°F) against a yearly average high of 13°C (55°F), and nights fall to about 9°C (48°F). Rain falls on roughly 12 of its 30 days. Compared with August (19°C (66°F)), September is cooler; by October highs drop to around 14°C (57°F).
- Sunrise (15 September)
- About 06:56
- Sunset (15 September)
- About 19:41
- Daylight
- About 12.6 hours
Autumn (September–November). Calmer streets, autumn colour and the International Arts Festival, turning wet and dark by November.
Crowds and prices
On a 1–5 scale, September rates 3 for crowds (the peak is June at 4) and 3 for hotel prices (highest in June). Prices sit in the middle of the year's range.
Events in September
- European Heritage Open Days (usually September)
Dates move from year to year. Check the organiser’s site before booking travel around an event.
What to do in September
With frequent rain, plan around indoor sights and keep outdoor time flexible.
Experience · Falls and Shankill
Murals and peace walls of west Belfast
Visitors sign the international peace wall on Cupar Way; a guided tour gives context you won't get on your own.
- Time needed
- 1.5–2 hours
- Cost
- Mid-priced
- History
- Iconic
- Art
- Photo spot
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Historic site · Titanic Quarter
SS Nomadic
The last surviving White Star Line vessel was built in Belfast as a tender to ferry passengers out to the Titanic and Olympic at Cherbourg.
- Time needed
- 45 minutes
- Cost
- Mid-priced
- History
- Kids
Garden · Queen's Quarter
Botanic Gardens and Palm House
The Tropical Ravine and Palm House are free and make a warm escape on a cold, wet afternoon.
- Time needed
- 1 hour
- Cost
- Free
- Free
- Nature
- Kids
- Outdoors
Historic site · City Centre
Crown Liquor Saloon
Opposite the Europa Hotel on Great Victoria Street, this Victorian gin palace owned by the National Trust has stained glass, ornate tiles, gas lighting and carved wooden snugs with doors and bells.
- Time needed
- 1 hour
- Cost
- Low cost
- History
- Architecture
- After dark
- Food
What to pack
For highs near 17°C, lows near 9°C and 12 wet days: layers, a warm sweater and a jacket for cool evenings; a compact umbrella and waterproof shoes — rain is frequent; comfortable walking shoes.
Is September a good time to visit Belfast?
One of the best months to visit Belfast, with a notable event on the calendar. The other best months are May–June and August. Compare every month.
Belfast in other months
Questions travellers ask
+Is September a good time to visit Belfast?
It is one of the best months to visit Belfast. Settled early-autumn weather is common and crowds drop after the school holidays.
+How warm is Belfast in September?
Average highs are around 17°C (63°F) and lows around 9°C (48°F).
+Does it rain a lot in Belfast in September?
Expect rain on about 12 days of the month, so pack for wet weather.