Horsham
September
Weather in Horsham for September 2025
Your guide to Horsham weather in September - trends and predictions
In general, the average temperature in Horsham at the beginning of September is 17.6 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 21.7 °C by the end of September.
Horsham experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 21.9 mm.
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Temperatures
Rain 🌧️
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24
Dry days
6
Rainy days
0
Snow days
18°/5°
Temperatures
23 km/h
Avg max wind
68 %
Avg humidity
Horsham in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  15° | 2  15° | 3 18° | 4  18° | 5  18° | 6  21° | 7  18° |
| 8  13° | 9 14° | 10 16° | 11 18° | 12 19° | 13 20° | 14 18° |
| 15 18° | 16 19° | 17 20° | 18  21° | 19 18° | 20 13° | 21 15° |
| 22  17° | 23 20° | 24 24° | 25 18° | 26 19° | 27 19° | 28 24° |
| 29 23° | 30 25° |
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Temperatures trend during September in Horsham
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 | 15° /8° | 0.5 mm | 5 | |
| 2 Sept. | Sunny | 15° /4° | 0.6 mm | 5 | |
| 3 Sept. | Sunny | 18° /4° | 0 mm | 6 | |
| 4 Sept. | Moderate rain at times | 18° /5° | 3.3 mm | 6 | |
| 5 Sept. | Light drizzle | 18° /8° | 0.8 mm | 5 | |
| 6 Sept. | Partly cloudy | 21° /6° | 1.1 mm | 6 | |
| 7 Sept. | Moderate rain | 18° /5° | 7.3 mm | 5 | |
| 8 Sept. | Light rain shower | 13° /4° | 2.1 mm | 5 | |
| 9 Sept. | Light drizzle | 14° /3° | 0.8 mm | 5 | |
| 10 Sept. | Patchy rain possible | 16° /6° | 0.1 mm | 5 | |
| 11 Sept. | Sunny | 18° /4° | 0.5 mm | 6 | |
| 12 Sept. | Sunny | 19° /4° | 0 mm | 7 | |
| 13 Sept. | Partly cloudy | 20° /5° | 0 mm | 6 | |
| 14 Sept. | Sunny | 18° /6° | 0 mm | 6 | |
| 15 Sept. | Mist | 18° /4° | 0 mm | 6 | |
| 16 Sept. | Sunny | 19° /4° | 0 mm | 6 | |
| 17 Sept. | Mist | 20° /4° | 0 mm | 6 | |
| 18 Sept. | Cloudy | 21° /6° | 0 mm | 6 | |
| 19 Sept. | Partly cloudy | 18° /8° | 0.3 mm | 6 | |
| 20 Sept. | Light rain shower | 13° /4° | 1.7 mm | 4 | |
| 21 Sept. | Patchy rain possible | 15° /4° | 0.6 mm | 5 | |
| 22 Sept. | Overcast | 17° /4° | 0.2 mm | 5 | |
| 23 Sept. | Overcast | 20° /5° | 0 mm | 6 | |
| 24 Sept. | Cloudy | 24° /7° | 0 mm | 7 | |
| 25 Sept. | Partly cloudy | 18° /7° | 1.3 mm | 6 | |
| 26 Sept. | Mist | 19° /3° | 0 mm | 6 | |
| 27 Sept. | Sunny | 19° /3° | 0 mm | 6 | |
| 28 Sept. | Mist | 24° /5° | 0 mm | 6 | |
| 29 Sept. | Sunny | 23° /5° | 0.6 mm | 7 | |
| 30 Sept. | Sunny | 25° /7° | 0 mm | 7 | |
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Important Notice
Our weather forecast for Horsham 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 Horsham forecast closer to your planned date for the most up-to-date weather information.
Horsham in September - FAQ
What are the expected maximum and minimum temperatures in Horsham during September?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 5°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Horsham during September?
In September, Horsham can expect light to moderate rainfall, totaling 21.9 mm across approximately 6 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Horsham during September?
The average wind speed in Horsham during September is 23 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Horsham
Explore the daily rainfall trends and prepare for Horshams September weather 💧
UV exposure in Horsham during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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