Belfast
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Belfast Weather in September

Thinking of visiting Belfast in September? Expect high temperatures reaching 29°C (84°F) during the day, dropping to 16°C (61°F) at night, with some rainfall likely.

Rainfall in Belfast in September

Historically, approximately 3 days this month are expected to have rain, averaging 27 mm (1.1 in). Although rain is not especially frequent, individual showers can still be quite heavy.

Temperature in Belfast in September

The excellent temperature in Belfast in September makes it a solid month to visit, with 29°C (84°F) during the day and 16°C (61°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 16°C (61°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

Belfast Temperature in September

Min Temperature
16°C (61°F)
Max Temperature
29°C (84°F)
Chance of Rain
10%
Precipitation
27 mm (1.1 in)
Rainy days
3 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 South Africa in September

Find out more about the weather in South Africa and which places have the best travel conditions in this month. See all of South Africa 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

Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Some rain is possible, so pack something to handle light showers.

What To Do in Belfast in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Cycling
    8/10
  • Walking
    8/10
  • Camping
    10/10
  • Outdoor sports
    8/10

Belfast 3-Day Forecast

More climate data for Belfast

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.