Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Belfast Weather in September
September in Belfast brings pleasant temperatures, with highs of 21°C (70°F) and nights dropping to 10°C (50°F). Rainfall is on the higher side this month, averaging around 98 mm (3.9 in), so keep a rain jacket handy.
Rainfall in Belfast in September
On average, there are about 9 days with rain during this month, averaging 98 mm (3.9 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Belfast in September
If you're visiting Belfast in September, expect excellent temperatures with highs of 21°C (70°F) and overnight lows of 10°C (50°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights fall to 10°C (50°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.
Belfast Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
21°C (70°F)
Chance of Rain
30%
Precipitation
98 mm (3.9 in)
Rainy days
9 days
Belfast Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Belfast - and find the best time to visit.
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Belfast in September
For Belfast in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho.
What To Do in Belfast in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
-
Cycling9/10 -
Walking9/10 -
Camping4/10 -
Outdoor sports9/10
Belfast 3-Day Forecast
More climate data for Belfast
See the full Belfast climate overview or explore weather in the United States of America.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
The 10 most alternative cities in the United States
Discover the top 10 fun and alternative U.S. cities rich in art, culture, and adventure. From Portland's hippy charm to Sedona's stunning landscapes.
Sedona: Explore Majestic Red Rock Landscapes
A picturesque artists' town surrounded by red rocks and known for its spirituality, vortex energy, and stunning hikes like Cathedral Rock.
10 most idyllic villages to visit in the United States
Discover 10 idyllic villages in the USA, from California to Vermont. Explore their unique charm, rich history, stunning nature, and vibrant arts scenes.