Happy Valley
September
Weather in Happy Valley for September 2025
Your guide to Happy Valley weather in September - trends and predictions
Until now, September 2025 in Happy Valley is slightly cooler than the historical average by -0.6 °C.
The forecast for the next days in Happy Valley predicts temperatures to be around 15 °C, close to the historical average.
In general, the average temperature in Happy Valley at the beginning of September is 16.1 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 16 °C by the end of September.
Happy Valley experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 48.3 mm.
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Temperatures
Rain 🌧️
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23
Dry days
7
Rainy days
0
Snow days
16°/10°
Temperatures
24 km/h
Avg max wind
68 %
Avg humidity
Happy Valley Weather September
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Temperatures trend during September in Happy Valley
See the weather trend as well as the moving average line
September weather in Happy Valley day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 14° /9° | 0.8 mm | 4 | |
| 2 Sept. |  Partly cloudy | 14° /8° | 0.1 mm | 5 | |
| 3 Sept. | Partly cloudy | 15° /9° | 0.2 mm | 5 | |
| 4 Sept. |  Patchy light rain | 17° /9° | 2.8 mm | 5 | |
| 5 Sept. |  Overcast | 16° /9° | 0.3 mm | 5 | |
| 6 Sept. | Partly cloudy | 20° /11° | 4.2 mm | 6 | |
| 7 Sept. | Light rain shower | 17° /10° | 14.6 mm | 5 | |
| 8 Sept. | Light rain shower | 13° /9° | 5.3 mm | 4 | |
| 9 Sept. | Overcast | 14° /8° | 5.7 mm | 4 | |
| 10 Sept. |  Sunny | 14° /8° | 0.9 mm | 5 | |
| 11 Sept. | Light rain shower | 15° /8° | 0.5 mm | 5 | |
| 12 Sept. | Sunny | 15° /8° | 0 mm | 5 | |
| 13 Sept. | Overcast | 16° /8° | 0 mm | 4 | |
| 14 Sept. | Overcast | 18° /10° | 0.1 mm | 5 | |
| 15 Sept. | Partly cloudy | 14° /8° | 0 mm | 6 | |
| 16 Sept. |  Moderate rain | 13° /11° | 5.3 mm | 1.4 | |
| 17 Sept. | Patchy rain possible | 13° /10° | 0.4 mm | 1.4 | |
| 18 Sept. | Sunny | 18° /8° | 0 mm | 1.4 | |
| 19 Sept. | Patchy rain possible | 15° /11° | 2.7 mm | 1.1 | |
| 20 Sept. | Patchy rain possible | 12° /10° | 0.8 mm | 1 | |
| 21 Sept. | Patchy rain possible | 14° /12° | 0.9 mm | 4 | |
| 22 Sept. | Sunny | 14° /10° | 0.1 mm | 5 | |
| 23 Sept. | Partly cloudy | 14° /9° | 0 mm | 5 | |
| 24 Sept. | Sunny | 14° /9° | 0 mm | 5 | |
| 25 Sept. | Partly cloudy | 15° /10° | 0 mm | 5 | |
| 26 Sept. | Partly cloudy | 16° /10° | 0 mm | 5 | |
| 27 Sept. | Overcast | 21° /12° | 0 mm | 5 | |
| 28 Sept. | Patchy rain possible | 15° /11° | 0.7 mm | 4 | |
| 29 Sept. |  Cloudy | 12° /9° | 0.1 mm | 4 | |
| 30 Sept. | Sunny | 19° /13° | 0.3 mm | 6 | |
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Important Notice
Our weather forecast for Happy Valley 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 Happy Valley forecast closer to your planned date for the most up-to-date weather information.
Change Month
Happy Valley in September - FAQ
What are the expected maximum and minimum temperatures in Happy Valley during September?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Happy Valley during September?
In September, Happy Valley can expect light to moderate rainfall, totaling 48.3 mm across approximately 7 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Happy Valley during September?
The average wind speed in Happy Valley during September is 24 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Happy Valley
Explore the daily rainfall trends and prepare for Happy Valleys September weather 💧
UV exposure in Happy Valley during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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