Weather in Harlow for September 2025
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Until now, September 2025 in Harlow has been significantly cooler than historical averages by -2 °C, with average temperature of 19.8 °C.
Expect cooler weather in the next days in Harlow with the forecast suggesting a temperature of 17.8 °C, lower than the historical average.
In general, the average temperature in Harlow at the beginning of September is 22.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.7 °C by the end of September.
Harlow in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 81.2 mm.
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Harlow Weather September
Temperatures trend during September in Harlow
September weather in Harlow day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 23° /13° | 3.7 mm | 5 | |
| 2 Sept. | Patchy rain possible | 21° /14° | 1.6 mm | 5 | |
| 3 Sept. | Light rain shower | 22° /13° | 3.1 mm | 5 | |
| 4 Sept. |  Sunny | 21° /12° | 4.9 mm | 5 | |
| 5 Sept. |  Overcast | 22° /13° | 1.8 mm | 5 | |
| 6 Sept. | Sunny | 26° /15° | 0.5 mm | 6 | |
| 7 Sept. | Sunny | 25° /15° | 2.2 mm | 6 | |
| 8 Sept. |  Partly cloudy | 23° /15° | 3.6 mm | 5 | |
| 9 Sept. | Sunny | 23° /13° | 0 mm | 6 | |
| 10 Sept. | Partly cloudy | 23° /13° | 1.7 mm | 5 | |
| 11 Sept. | Overcast | 20° /11° | 1 mm | 4 | |
| 12 Sept. | Patchy rain possible | 17° /10° | 0.4 mm | 4 | |
| 13 Sept. | Overcast | 17° /9° | 0.7 mm | 4 | |
| 14 Sept. |  Cloudy | 19° /9° | 0.9 mm | 5 | |
| 15 Sept. | Patchy rain possible | 18° /13° | 0.3 mm | 0.9 | |
| 16 Sept. | Partly cloudy | 18° /12° | 0 mm | 0.8 | |
| 17 Sept. |  Moderate rain | 18° /12° | 5.2 mm | 0.1 | |
| 18 Sept. | Partly cloudy | 23° /15° | 0 mm | 1 | |
| 19 Sept. | Partly cloudy | 25° /15° | 0 mm | 0.8 | |
| 20 Sept. | Partly cloudy | 19° /15° | 0.1 mm | 5 | |
| 21 Sept. | Patchy rain possible | 17° /13° | 0.2 mm | 3 | |
| 22 Sept. | Patchy rain possible | 16° /11° | 1.3 mm | 3 | |
| 23 Sept. | Patchy rain possible | 18° /10° | 0.6 mm | 3 | |
| 24 Sept. | Patchy rain possible | 14° /9° | 0.4 mm | 3 | |
| 25 Sept. | Patchy rain possible | 15° /8° | 0.1 mm | 3 | |
| 26 Sept. | Partly cloudy | 16° /9° | 0 mm | 4 | |
| 27 Sept. | Partly cloudy | 16° /8° | 0 mm | 4 | |
| 28 Sept. | Sunny | 16° /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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Harlow in September - FAQ
September rainfall patterns in Harlow
UV exposure in Harlow during September
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Where is Harlow?Get accurate weather forecasts for Harlow, located at latitude 51.777 and longitude 0.112. Stay updated with localized weather information tailored for Harlow.