Harlow
September
Weather in Harlow for September 2025
Your guide to Harlow weather in September - trends and predictions
In general, the average temperature in Harlow at the beginning of September is 24 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.1 °C by the end of September.
Harlow sees moderate rainfall in September, averaging 7 rainy days.
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23
Dry days
7
Rainy days
0
Snow days
22°/14°
Temperatures
21 km/h
Avg max wind
69 %
Avg humidity
Harlow in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2  23° | 3 23° | 4  22° | 5 23° | 6 27° | 7 26° |
| 8  24° | 9 23° | 10 24° | 11 20° | 12 16° | 13 17° | 14  19° |
| 15 22° | 16 22° | 17  20° | 18  22° | 19 20° | 20 20° | 21 20° |
| 22 18° | 23 17° | 24 18° | 25 19° | 26  19° | 27  16° | 28 15° |
| 29 16° | 30 17° |
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Temperatures trend during September in Harlow
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 | 24° /13° | 4.3 mm | 6 | |
| 2 Sept. | Patchy rain possible | 23° /15° | 0.2 mm | 5 | |
| 3 Sept. | Overcast | 23° /13° | 1.2 mm | 5 | |
| 4 Sept. | Sunny | 22° /13° | 4.3 mm | 6 | |
| 5 Sept. | Overcast | 23° /14° | 2.7 mm | 5 | |
| 6 Sept. | Sunny | 27° /16° | 0.7 mm | 7 | |
| 7 Sept. | Sunny | 26° /15° | 2.8 mm | 7 | |
| 8 Sept. | Partly cloudy | 24° /16° | 5.4 mm | 6 | |
| 9 Sept. | Sunny | 23° /15° | 0 mm | 6 | |
| 10 Sept. | Partly cloudy | 24° /14° | 1.7 mm | 6 | |
| 11 Sept. | Overcast | 20° /11° | 0.7 mm | 5 | |
| 12 Sept. | Overcast | 16° /10° | 0.1 mm | 4 | |
| 13 Sept. | Overcast | 17° /9° | 0 mm | 4 | |
| 14 Sept. | Cloudy | 19° /10° | 0 mm | 5 | |
| 15 Sept. | Partly cloudy | 22° /11° | 0 mm | 6 | |
| 16 Sept. | Partly cloudy | 22° /11° | 0 mm | 6 | |
| 17 Sept. | Light drizzle | 20° /12° | 0.5 mm | 5 | |
| 18 Sept. | Patchy light rain with thunder | 22° /12° | 4.9 mm | 5 | |
| 19 Sept. | Light rain | 20° /13° | 1.3 mm | 5 | |
| 20 Sept. | Light rain shower | 20° /13° | 11.7 mm | 5 | |
| 21 Sept. | Light rain shower | 20° /12° | 3.2 mm | 5 | |
| 22 Sept. | Light drizzle | 18° /12° | 10.5 mm | 4 | |
| 23 Sept. | Patchy rain possible | 17° /10° | 0.6 mm | 4 | |
| 24 Sept. | Cloudy | 18° /12° | 1.4 mm | 4 | |
| 25 Sept. | Overcast | 19° /12° | 1.2 mm | 5 | |
| 26 Sept. | Thundery outbreaks possible | 19° /11° | 4.7 mm | 5 | |
| 27 Sept. | Mist | 16° /10° | 4.4 mm | 4 | |
| 28 Sept. | Cloudy | 15° /8° | 0 mm | 4 | |
| 29 Sept. | Light rain shower | 16° /9° | 1.4 mm | 4 | |
| 30 Sept. | Partly cloudy | 17° /10° | 11.2 mm | 5 | |
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Important Notice
Our weather forecast for Harlow 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 Harlow forecast closer to your planned date for the most up-to-date weather information.
Harlow in September - FAQ
What are the expected maximum and minimum temperatures in Harlow 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 Harlow during September?
In September, Harlow can expect light to moderate rainfall, totaling 44.3 mm across approximately 7 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Harlow during September?
The average wind speed in Harlow during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
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