Londonderry Weather in September

In Londonderry, September brings moderate daytime temperatures around 17°C (63°F), with nights cooling to 10°C (50°F). Expect quite a bit of rainfall this month.

Rainfall in Londonderry in September

You can typically expect 21 days of rain this month, averaging around 89 mm (3.5 in). Expect plenty of grey, overcast days rather than intense storms. The rain rarely amounts to much on any given day.

Temperature in Londonderry in September

If you're visiting Londonderry in September, expect highs of 17°C (63°F) and overnight lows around 10°C (50°F). The difference between afternoon and evening temperatures is usually noticeable. Nights drop to 10°C (50°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Londonderry in September

The area enjoys a moderate level of sunlight, with around 118 hours. It's a good balance between sunny and cloudy days.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, July, August, September and October typically offer the best weather for Londonderry.

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• January
• February
• March
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• May
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• July
• August

• September
• October
• November
• December

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

Londonderry Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 17°C (63°F)  

Chance of Rain 70%  

Precipitation 89 mm (3.5 in)  

Rainy days 21 days  

Sunshine 118 hours *  

Percentage Sunshine *  

What to Wear in Londonderry in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Londonderry 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

4/10

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 the United Kingdom, check out our Londonderry's climate page.

More climate data for Londonderry

Temperature Rainfall Sunshine

See the full Londonderry climate overview or explore weather in the United Kingdom.