Monthly climate guide
Hangzhou weather in September
With highs near 28°C (83°F) and lows around 20°C (67°F), September feels hot in Hangzhou. Rainfall averages about 158 mm (very wet) and the sky is often cloudy. Daytime highs are 4°C cooler than August and 5°C warmer than October.
What stands out in September
- It's humid — around 81% — so the heat feels heavier.
- Temperatures are falling — expect highs around 5°C lower by October.
- In Hangzhou, September is early autumn.
- Hangzhou is usually about 2°C warmer than Tangshan in September.
Avg high
28°C
83°F
Avg low
20°C
67°F
Rainfall
158 mm
very wet
Humidity
81%
relative
Sky
68%
cloud · often cloudy
Hangzhou weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 9°C / 47°F | 0°C / 31°F | 81 mm | 82% | 69% |
| February | 11°C / 52°F | 1°C / 34°F | 86 mm | 81% | 71% |
| March | 16°C / 61°F | 5°C / 41°F | 110 mm | 80% | 70% |
| April | 22°C / 72°F | 11°C / 51°F | 116 mm | 77% | 69% |
| May | 27°C / 81°F | 16°C / 61°F | 137 mm | 76% | 74% |
| June | 29°C / 84°F | 21°C / 69°F | 290 mm | 83% | 85% |
| July | 32°C / 90°F | 25°C / 76°F | 178 mm | 83% | 73% |
| August | 32°C / 90°F | 24°C / 76°F | 201 mm | 82% | 66% |
| September | 28°C / 83°F | 20°C / 67°F | 158 mm | 81% | 68% |
| October | 24°C / 74°F | 14°C / 56°F | 85 mm | 79% | 61% |
| November | 18°C / 65°F | 8°C / 46°F | 85 mm | 80% | 62% |
| December | 11°C / 51°F | 1°C / 34°F | 62 mm | 78% | 59% |
What to pack for September
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- A compact umbrella or packable rain jacket
- Water-resistant shoes
- Quick-dry fabrics — it feels stickier than the temperature suggests
Is September a good time to visit Hangzhou?
Compare the months in the chart above to find your ideal window.
Best time to visit Hangzhou →Other China cities in September
Cite or embed this data
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Hangzhou weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/china/hangzhou/september
<a href="https://weathercompare.eu/weather/china/hangzhou/september">Hangzhou weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/china/hangzhou" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Hangzhou weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/china/hangzhou/september">Hangzhou weather in September</a> – WeatherCompare</p>
Hangzhou in September: quick answers
Is September a good time to visit Hangzhou?
September is one of the wetter months in Hangzhou, with about 158 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Hangzhou in September?
Average highs are about 28°C (83°F) and average lows about 20°C (67°F), based on 10 years of daily data.
Does it rain a lot in Hangzhou in September?
Hangzhou typically gets around 158 mm of rain in September — very wet.
Figures are long-term averages for the area around Hangzhou (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.