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Weather in Slough for September 2025

Your guide to Slough weather in September - trends and predictions
  • In general, the average temperature in Slough at the beginning of September is 23.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17 °C by the end of September.

  • Slough sees moderate rainfall in September, averaging 7 rainy days.

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Average dry days
23
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/14°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
72 %
Avg humidity

Slough in September average weather

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Temperatures trend during September in Slough

See the weather trend as well as the moving average line

September weather day by day

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Date Weather Temperatures Rain UV More
1 Sept. Overcast
Overcast
22° /13° 10.5 mm 5
2 Sept. Overcast
Overcast
23° /15° 0.2 mm 5
3 Sept. Overcast
Overcast
22° /13° 0.5 mm 5
4 Sept. Sunny
Sunny
22° /13° 3.5 mm 6
5 Sept. Sunny
Sunny
22° /14° 8.3 mm 6
6 Sept. Overcast
Overcast
25° /15° 3.5 mm 6
7 Sept. Partly cloudy
Partly cloudy
26° /15° 1.2 mm 7
8 Sept. Partly cloudy
Partly cloudy
23° /16° 14.1 mm 6
9 Sept. Sunny
Sunny
24° /15° 0 mm 6
10 Sept. Partly cloudy
Partly cloudy
24° /14° 1.4 mm 6
11 Sept. Cloudy
Cloudy
19° /11° 0.6 mm 4
12 Sept. Mist
Mist
17° /10° 0.6 mm 4
13 Sept. Overcast
Overcast
17° /9° 0 mm 5
14 Sept. Cloudy
Cloudy
19° /9° 0 mm 5
15 Sept. Sunny
Sunny
22° /10° 0 mm 6
16 Sept. Partly cloudy
Partly cloudy
22° /12° 0 mm 6
17 Sept. Light rain shower
Light rain shower
21° /12° 2.5 mm 6
18 Sept. Light rain shower
Light rain shower
21° /12° 2.5 mm 5
19 Sept. Light rain
Light rain
20° /12° 0.9 mm 5
20 Sept. Light rain shower
Light rain shower
20° /13° 5 mm 5
21 Sept. Light rain shower
Light rain shower
21° /11° 1.8 mm 5
22 Sept. Light rain shower
Light rain shower
18° /12° 6.1 mm 4
23 Sept. Partly cloudy
Partly cloudy
17° /9° 0.1 mm 5
24 Sept. Patchy rain possible
Patchy rain possible
18° /11° 1.5 mm 4
25 Sept. Overcast
Overcast
18° /12° 1.2 mm 5
26 Sept. Thundery outbreaks possible
Thundery outbreaks possible
19° /11° 5.9 mm 5
27 Sept. Patchy rain possible
Patchy rain possible
15° /9° 4.7 mm 4
28 Sept. Overcast
Overcast
16° /8° 0.1 mm 4
29 Sept. Overcast
Overcast
16° /9° 1.2 mm 4
30 Sept. Cloudy
Cloudy
17° /9° 9.2 mm 4
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Important Notice
Our weather forecast for Slough 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 Slough forecast closer to your planned date for the most up-to-date weather information.

Slough in September - FAQ

What are the expected maximum and minimum temperatures in Slough during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Slough during September?
In September, Slough can expect light to moderate rainfall, totaling 27.1 mm across approximately 7 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Slough during September?
The average wind speed in Slough during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

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Location coordinates Where is Slough?

Get accurate weather forecasts for Slough, located at latitude 51.509 and longitude -0.595. Stay updated with localized weather information tailored for Slough.

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