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Weather in Watford for September 2026

Your guide to Watford weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Watford at the beginning of September is 22.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.7 °C by the end of September.

    • Rain 🌧️

  • Watford in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 84.3 mm.

    • More

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Average dry days
11
Dry days
Average rainy days
19
Rainy days
Average snowy days
0
Snow days
Average temperatures
20°/12°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
75 %
Avg humidity

Watford 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
Overcast
21°
4
Sunny
21°
5
Sunny
21°
6
Overcast
25°
7
Patchy rain possible
25°
8
Partly cloudy
23°
9
Sunny
23°
10
Light rain shower
22°
11
Mist
19°
12
Light rain shower
16°
13
Overcast
16°
14
Partly cloudy
18°
15
Sunny
20°
16
Partly cloudy
20°
17
Light rain shower
19°
18
Cloudy
21°
19
Light rain
22°
20
Light rain shower
21°
21
Light rain shower
17°
22
Light rain shower
16°
23
Partly cloudy
16°
24
Patchy rain possible
17°
25
Overcast
18°
26
Thundery outbreaks possible
17°
27
Fog
16°
28
Overcast
16°
29
Overcast
16°
30
Cloudy
17°

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
 22° /12° 5.3 mm 5
2 Sept. Mist
Mist
 21° /13° 2.5 mm 5
3 Sept. Overcast
Overcast
 21° /13° 2.5 mm 5
4 Sept. Sunny
Sunny
 21° /12° 4.5 mm 5
5 Sept. Sunny
Sunny
 21° /12° 4.1 mm 5
6 Sept. Overcast
Overcast
 25° /14° 1.2 mm 6
7 Sept. Patchy rain possible
Patchy rain possible
 25° /14° 2.5 mm 6
8 Sept. Partly cloudy
Partly cloudy
 23° /14° 8.3 mm 5
9 Sept. Sunny
Sunny
 23° /12° 0 mm 6
10 Sept. Light rain shower
Light rain shower
 22° /13° 2.2 mm 5
11 Sept. Mist
Mist
 19° /10° 1 mm 4
12 Sept. Light rain shower
Light rain shower
 16° /9° 1.3 mm 4
13 Sept. Overcast
Overcast
 16° /9° 1.1 mm 4
14 Sept. Partly cloudy
Partly cloudy
 18° /9° 1.2 mm 5
15 Sept. Sunny
Sunny
 20° /11° 0.1 mm 5
16 Sept. Partly cloudy
Partly cloudy
 20° /11° 0 mm 5
17 Sept. Light rain shower
Light rain shower
 19° /11° 3.1 mm 5
18 Sept. Cloudy
Cloudy
 21° /12° 1.3 mm 5
19 Sept. Light rain
Light rain
 22° /12° 0.9 mm 5
20 Sept. Light rain shower
Light rain shower
 21° /12° 4.5 mm 5
21 Sept. Light rain shower
Light rain shower
 17° /9° 1 mm 4
22 Sept. Light rain shower
Light rain shower
 16° /10° 5.7 mm 4
23 Sept. Partly cloudy
Partly cloudy
 16° /8° 0.1 mm 4
24 Sept. Patchy rain possible
Patchy rain possible
 17° /10° 1.2 mm 4
25 Sept. Overcast
Overcast
 18° /10° 1.5 mm 4
26 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 17° /9° 2.6 mm 4
27 Sept. Fog
Fog
 16° /9° 2.6 mm 4
28 Sept. Overcast
Overcast
 16° /8° 0 mm 4
29 Sept. Overcast
Overcast
 16° /8° 1.8 mm 4
30 Sept. Cloudy
Cloudy
 17° /9° 5.9 mm 4
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 20° and cooler nights around 12°. 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 84.3 mm spread over approximately 19 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 20 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 19 rainy days in September with a total of 84.3 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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