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Weather in Luton for September 2025

Your guide to Luton weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Luton has been significantly cooler than historical averages by -2 °C, with average temperature of 18.9 °C.

  • Expect cooler weather in the next days in Luton with the forecast suggesting a temperature of 17.1 °C, lower than the historical average.

  • In general, the average temperature in Luton at the beginning of September is 22.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15 °C by the end of September.

    • Rain 🌧️

  • Luton in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 74.5 mm.

    • More

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

Average dry days
12
Dry days
Average rainy days
18
Rainy days
Average snowy days
0
Snow days
Average temperatures
19°/12°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
74 %
Avg humidity

Luton Weather September

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

Temperatures trend during September in Luton

See the weather trend as well as the moving average line

September weather in Luton day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
 22° /12° 2.9 mm 5
2 Sept. Mist
Mist
 21° /13° 2.3 mm 5
3 Sept. Light rain shower
Light rain shower
 21° /13° 3.2 mm 5
4 Sept. Sunny
Sunny
 20° /13° 5.5 mm 5
5 Sept. Partly cloudy
Partly cloudy
 22° /12° 2.6 mm 5
6 Sept. Cloudy
Cloudy
 25° /15° 0.5 mm 6
7 Sept. Sunny
Sunny
 25° /15° 2 mm 6
8 Sept. Partly cloudy
Partly cloudy
 22° /15° 5.9 mm 5
9 Sept. Overcast
Overcast
 22° /13° 0 mm 6
10 Sept. Light rain shower
Light rain shower
 22° /13° 1.8 mm 5
11 Sept. Cloudy
Cloudy
 18° /10° 0.9 mm 4
12 Sept. Mist
Mist
 16° /9° 0.9 mm 4
13 Sept. Overcast
Overcast
 16° /9° 0.8 mm 4
14 Sept. Cloudy
Cloudy
 18° /9° 1.7 mm 5
15 Sept. Patchy rain possible
Patchy rain possible
 17° /13° 0.7 mm 0.8
16 Sept. Partly cloudy
Partly cloudy
 18° /11° 0 mm 0.9
17 Sept. Moderate rain
Moderate rain
 17° /11° 6.4 mm 0.1
18 Sept. Partly cloudy
Partly cloudy
 23° /15° 0 mm 0.9
19 Sept. Partly cloudy
Partly cloudy
 24° /14° 0 mm 0.7
20 Sept. Partly cloudy
Partly cloudy
 19° /15° 0 mm 5
21 Sept. Patchy rain possible
Patchy rain possible
 16° /12° 0.4 mm 3
22 Sept. Patchy rain possible
Patchy rain possible
 15° /11° 2.9 mm 3
23 Sept. Patchy rain possible
Patchy rain possible
 17° /9° 1.3 mm 3
24 Sept. Patchy rain possible
Patchy rain possible
 13° /9° 0.8 mm 3
25 Sept. Patchy rain possible
Patchy rain possible
 14° /8° 0.1 mm 3
26 Sept. Partly cloudy
Partly cloudy
 16° /8° 0 mm 4
27 Sept. Sunny
Sunny
 15° /7° 0 mm 4
28 Sept. Sunny
Sunny
 16° /7° 0 mm 4
29 Sept. Cloudy
Cloudy
 15° /9° 2.3 mm 4
30 Sept. Overcast
Overcast
 16° /10° 8.7 mm 4
Next
Important Notice
Our weather forecast for Luton 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 Luton forecast closer to your planned date for the most up-to-date weather information.
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Luton in September - FAQ

What are the expected maximum and minimum temperatures in Luton during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Luton during September?
Moderate rainfall is anticipated in Luton during September, with a total of 74.5 mm spread over approximately 18 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Luton during September?
The average wind speed in Luton during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Luton

Explore the daily rainfall trends and prepare for Lutons September weather 💧

UV exposure in Luton during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Get accurate weather forecasts for Luton, located at latitude 51.88 and longitude -0.417. Stay updated with localized weather information tailored for Luton.

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