Watford
September
Weather in Watford for September 2025
Your guide to Watford weather in September - trends and predictions
In general, the average temperature in Watford at the beginning of September is 23.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.3 °C by the end of September.
Watford sees moderate rainfall in September, averaging 7 rainy days.
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23
Dry days
7
Rainy days
0
Snow days
22°/13°
Temperatures
20 km/h
Avg max wind
73 %
Avg humidity
Watford in September average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  22° | 2 23° | 3  21° | 4  22° | 5 22° | 6 26° | 7 26° |
| 8  23° | 9 24° | 10 24° | 11 18° | 12 16° | 13 16° | 14 19° |
| 15 22° | 16 21° | 17  20° | 18 21° | 19  20° | 20 20° | 21 20° |
| 22 17° | 23 17° | 24 17° | 25 18° | 26  18° | 27 15° | 28 15° |
| 29 15° | 30  16° |
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Temperatures trend during September in Watford
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. | Mist | 22° /13° | 7.2 mm | 5 | |
| 2 Sept. | Mist | 23° /14° | 0.4 mm | 5 | |
| 3 Sept. | Overcast | 21° /12° | 0.5 mm | 5 | |
| 4 Sept. | Sunny | 22° /13° | 3.2 mm | 6 | |
| 5 Sept. | Sunny | 22° /14° | 6.1 mm | 6 | |
| 6 Sept. | Overcast | 26° /15° | 1.8 mm | 6 | |
| 7 Sept. | Sunny | 26° /15° | 3.5 mm | 7 | |
| 8 Sept. | Partly cloudy | 23° /16° | 12.4 mm | 6 | |
| 9 Sept. | Sunny | 24° /14° | 0 mm | 6 | |
| 10 Sept. | Partly cloudy | 24° /13° | 1.5 mm | 6 | |
| 11 Sept. | Mist | 18° /10° | 0.8 mm | 4 | |
| 12 Sept. | Mist | 16° /9° | 0.5 mm | 4 | |
| 13 Sept. | Overcast | 16° /9° | 0 mm | 4 | |
| 14 Sept. | Partly cloudy | 19° /9° | 0 mm | 6 | |
| 15 Sept. | Sunny | 22° /10° | 0 mm | 5 | |
| 16 Sept. | Partly cloudy | 21° /11° | 0 mm | 6 | |
| 17 Sept. | Light rain shower | 20° /12° | 3.2 mm | 5 | |
| 18 Sept. | Light rain shower | 21° /11° | 1.9 mm | 5 | |
| 19 Sept. | Light rain | 20° /12° | 1.3 mm | 5 | |
| 20 Sept. | Light rain shower | 20° /12° | 6.5 mm | 5 | |
| 21 Sept. | Light rain shower | 20° /11° | 1.6 mm | 5 | |
| 22 Sept. | Light rain shower | 17° /12° | 8.5 mm | 4 | |
| 23 Sept. | Partly cloudy | 17° /9° | 0.1 mm | 5 | |
| 24 Sept. | Overcast | 17° /11° | 1.8 mm | 4 | |
| 25 Sept. | Overcast | 18° /11° | 2.2 mm | 5 | |
| 26 Sept. | Thundery outbreaks possible | 18° /11° | 3.8 mm | 4 | |
| 27 Sept. | Fog | 15° /9° | 3.9 mm | 4 | |
| 28 Sept. | Overcast | 15° /8° | 0.1 mm | 4 | |
| 29 Sept. | Overcast | 15° /9° | 2.7 mm | 4 | |
| 30 Sept. | Cloudy | 16° /9° | 8.9 mm | 4 | |
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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.
Watford in September - FAQ
What are the expected maximum and minimum temperatures in Watford during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Watford during September?
In September, Watford can expect light to moderate rainfall, totaling 33.5 mm across approximately 7 days. Occasional showers are possible, and planning ahead for them could be helpful.
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.
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