Lisburn Weather in September

Lisburn in September sees moderate daytime temperatures of 17°C (63°F) and nighttime lows of 11°C (52°F). Rainfall is fairly high this month at around 79 mm (3.1 in), so pack a rain jacket to stay dry.

Rainfall in Lisburn in September

Historically, September sees about 18 days of rain, with a monthly average of 79 mm (3.1 in). With rain spread across many days but low totals, showers are typically short and light rather than heavy.

Temperature in Lisburn in September

Daytime highs in Lisburn in September reach 17°C (63°F), with nights around 11°C (52°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights drop to around 11°C (52°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Lisburn in September

The area enjoys a balanced 109 hours of sunlight, ensuring it's neither too overcast nor too sunny.

Wind Speed in Lisburn in September

September sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.

Average water temperature in September

The water temperature is 13°C (55°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.

If you prefer dry days with pleasant temperatures, June, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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• January
• February
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• October
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For a detailed overview over the year and the best time to visit Ireland, check out our Lisburn's climate page.

Lisburn Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 17°C (63°F)  

Water Temperature 13°C (55°F) *  

Chance of Rain 60%  

Precipitation 79 mm (3.1 in)  

Rainy days 18 days  

Humidity 91% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 109 hours *  

Percentage Sunshine 28% *  

* Data from: Belfast, Ireland (19 KM, 11 Miles).

What to Wear in Lisburn in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. The water temperature sits at about 13°C (55°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Lisburn in September

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

Swimming

6/10

Cycling

6/10

Walking

6/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Ireland, check out our Lisburn's climate page.

More climate data for Lisburn

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Lisburn climate overview or explore weather in Ireland.