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Weather in Watford for September 2026

Your guide to Watford weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Watford is slightly cooler than the historical average by 0.7 °C.

  • The forecast for the next days in Watford predicts temperatures to be around 23 °C, close to the historical average.

  • In general, the average temperature in Watford at the beginning of September is 22 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 22.9 °C by the end of September.

    • Rain 🌧️

  • Watford experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 69.9 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
19°/11°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
74 %
Avg humidity

Watford Weather September

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

Temperatures trend during September in Watford

See the weather trend as well as the moving average line

September weather in Watford 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
 21° /12° 4 mm 5
2 Sept. Mist
Mist
 21° /12° 1.9 mm 4
3 Sept. Overcast
Overcast
 22° /13° 1.9 mm 4
4 Sept. Sunny
Sunny
 20° /12° 3.5 mm 4
5 Sept. Sunny
Sunny
 21° /12° 3 mm 5
6 Sept. Overcast
Overcast
 25° /14° 0.9 mm 5
7 Sept. Patchy rain possible
Patchy rain possible
 24° /14° 1.9 mm 5
8 Sept. Partly cloudy
Partly cloudy
 21° /13° 9.1 mm 5
9 Sept. Sunny
Sunny
 21° /11° 0 mm 5
10 Sept. Light rain shower
Light rain shower
 22° /12° 2 mm 4
11 Sept. Mist
Mist
 19° /11° 1.4 mm 4
12 Sept. Light rain shower
Light rain shower
 18° /9° 1 mm 3
13 Sept. Overcast
Overcast
 17° /11° 1.8 mm 3
14 Sept. Partly cloudy
Partly cloudy
 19° /10° 1 mm 4
15 Sept. Patchy rain possible
Patchy rain possible
 21° /11° 0.1 mm 4
16 Sept. Partly cloudy
Partly cloudy
 19° /10° 0 mm 5
17 Sept. Light rain shower
Light rain shower
 19° /11° 2.8 mm 4
18 Sept. Cloudy
Cloudy
 20° /11° 1 mm 4
19 Sept. Light rain
Light rain
 21° /13° 0.8 mm 4
20 Sept. Overcast
Overcast
 18° /12° 0 mm 3.3
21 Sept. Sunny
Sunny
 22° /10° 0 mm 4
22 Sept. Sunny
Sunny
 23° /15° 0 mm 3.8
23 Sept. Overcast
Overcast
 22° /11° 0.1 mm 3.2
24 Sept. Sunny
Sunny
 19° /8° 0 mm 5
25 Sept. Sunny
Sunny
 20° /10° 0 mm 5
26 Sept. Overcast
Overcast
 26° /12° 0 mm 7
27 Sept. Sunny
Sunny
 22° /14° 0 mm 6
28 Sept. Sunny
Sunny
 25° /15° 0 mm 6
29 Sept. Sunny
Sunny
 26° /14° 0 mm 7
30 Sept. Overcast
Overcast
 22° /17° 0 mm 5
Next
Important Notice
Our weather forecast for Watford 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 Watford forecast closer to your planned date for the most up-to-date weather information.
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Watford in September - FAQ

What are the expected maximum and minimum temperatures in Watford during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Watford during September?
Moderate rainfall is anticipated in Watford during September, with a total of 69.9 mm spread over approximately 24 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Watford during September?
The average wind speed in Watford during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Watford

Explore the daily rainfall trends and prepare for Watfords September weather 💧
Typically, Watford has 24 rainy days in September with a total of 69.9 mm of rainfall.

UV exposure in Watford during September

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

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Location coordinates Where is Watford?

Get accurate weather forecasts for Watford, located at latitude 51.655 and longitude -0.396. Stay updated with localized weather information tailored for Watford.

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