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Derry City and Strabane (Derry)
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Weather in Derry City and Strabane for September 2026

Your guide to Derry City and Strabane weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Derry City and Strabane is slightly cooler than the historical average by 0.7 °C.

  • The forecast for the next days in Derry City and Strabane predicts temperatures to be around 18 °C, close to the historical average.

  • In general, the average temperature in Derry City and Strabane at the beginning of September is 18.1 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 17.9 °C by the end of September.

    • Rain 🌧️

  • Derry City and Strabane experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 100 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
6
Dry days
Average rainy days
24
Rainy days
Average snowy days
0
Snow days
Average temperatures
15°/8°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
85 %
Avg humidity

Derry City and Strabane Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Patchy rain possible
16°
2
Light rain shower
18°
3
Partly cloudy
17°
4
Light rain shower
18°
5
Fog
18°
6
Mist
20°
7
Patchy rain possible
20°
8
Patchy rain possible
18°
9
Patchy rain possible
17°
10
Light rain shower
16°
11
Light rain shower
14°
12
Light rain shower
15°
13
Moderate rain
14°
14
Mist
15°
15
Light rain shower
14°
16
Patchy rain possible
16°
17
Moderate rain
17°
18
Light rain shower
16°
19
Light rain shower
17°
20
Overcast
15°
21
Sunny
22°
22
Fog
15°
23
Patchy rain possible
14°
24
Overcast
17°
25
Patchy rain possible
15°
26
Fog
16°
27
Overcast
15°
28
Sunny
21°
29
Sunny
20°
30
Sunny
21°

Temperatures trend during September in Derry City and Strabane

See the weather trend as well as the moving average line

September weather in Derry City and Strabane day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
 16° /9° 3.6 mm 3
2 Sept. Light rain shower
Light rain shower
 18° /9° 3.8 mm 3
3 Sept. Partly cloudy
Partly cloudy
 17° /9° 2.2 mm 4
4 Sept. Light rain shower
Light rain shower
 18° /8° 1.4 mm 4
5 Sept. Fog
Fog
 18° /9° 0.1 mm 4
6 Sept. Mist
Mist
 20° /10° 0.6 mm 4
7 Sept. Patchy rain possible
Patchy rain possible
 20° /10° 2.2 mm 4
8 Sept. Patchy rain possible
Patchy rain possible
 18° /9° 2.3 mm 4
9 Sept. Patchy rain possible
Patchy rain possible
 17° /9° 0.7 mm 3
10 Sept. Light rain shower
Light rain shower
 16° /9° 5.6 mm 3
11 Sept. Light rain shower
Light rain shower
 14° /7° 5 mm 3
12 Sept. Light rain shower
Light rain shower
 15° /7° 4.8 mm 3
13 Sept. Moderate rain
Moderate rain
 14° /5° 5.6 mm 2
14 Sept. Mist
Mist
 15° /9° 5.2 mm 3
15 Sept. Light rain shower
Light rain shower
 14° /8° 5 mm 3
16 Sept. Patchy rain possible
Patchy rain possible
 16° /7° 1.3 mm 3
17 Sept. Moderate rain
Moderate rain
 17° /9° 6.8 mm 4
18 Sept. Light rain shower
Light rain shower
 16° /8° 3.3 mm 3
19 Sept. Light rain shower
Light rain shower
 17° /8° 4.4 mm 5
20 Sept. Overcast
Overcast
 15° /10° 0.1 mm 2.6
21 Sept. Sunny
Sunny
 22° /12° 0.5 mm 3
22 Sept. Fog
Fog
 15° /11° 2.7 mm 0.5
23 Sept. Patchy rain possible
Patchy rain possible
 14° /7° 15.9 mm 2.4
24 Sept. Overcast
Overcast
 17° /7° 0 mm 5
25 Sept. Patchy rain possible
Patchy rain possible
 15° /11° 1.1 mm 3
26 Sept. Fog
Fog
 16° /9° 0.8 mm 5
27 Sept. Overcast
Overcast
 15° /8° 0 mm 4
28 Sept. Sunny
Sunny
 21° /10° 0 mm 6
29 Sept. Sunny
Sunny
 20° /12° 0 mm 6
30 Sept. Sunny
Sunny
 21° /11° 0 mm 6
Next
Important Notice
Our weather forecast for Derry City and Strabane in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Derry City and Strabane forecast closer to your planned date for the most up-to-date weather information.
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Derry City and Strabane in September - FAQ

What are the expected maximum and minimum temperatures in Derry City and Strabane during September?
During September, expect a variety of temperatures with highs around 15° and lows near 8°, suitable for diverse activities and preferences.

How much rainfall should be expected in Derry City and Strabane during September?
Significant rainfall exceeding 100 mm is expected in Derry City and Strabane during September, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Derry City and Strabane during September?
The average wind speed in Derry City and Strabane during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Derry City and Strabane

Explore the daily rainfall trends and prepare for Derry City and Strabanes September weather 💧
Typically, Derry City and Strabane has 24 rainy days in September with a total of 100 mm of rainfall.

UV exposure in Derry City and Strabane during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Location coordinates Where is Derry City and Strabane?

Get accurate weather forecasts for Derry City and Strabane, located at latitude 54.998 and longitude -7.309. Stay updated with localized weather information tailored for Derry City and Strabane.

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