Hangzhou (West Lake) weather in August

August in Hangzhou: sweltering, rainy, with poor air quality — not the time — 41°C afternoons.

Updated September 2026 · climate normals from ERA5 reanalysis

Hangzhou🇨🇳 China · Central China · City49
  1. 61Jan
  2. 66Feb
  3. 74Mar
  4. 84Apr
  5. 70May
  6. 45Jun
  7. 44Jul
  8. 49Aug
  9. 60Sep
  10. 85Oct
  11. 79Nov
  12. 67Dec

#10 of 12 months in Hangzhou · #1243 of 1413 destinations to visit in August · comfort 49/100 (tier F)

Days
36°C
Nights
26°C
Wet days
12
Sun
10.2 h
Humidity
75%
Daylight
13 h
Hangzhou, China
Photo: nana liu · Pexels

Traveller notes on Hangzhou in August

Other months in Hangzhou

Regulars are specific that visiting during the first week of this month can mean genuinely large crowds if it coincides with the Lunar New Year holidays, a real planning factor beyond the weather itself. Our row backs that cold, genuinely damp read, 12.6C over 3.4C nights feeling 0C, with 69.7mm of rain across 10.4 days and a trace of snow, 2.5cm, on top of a notably low sunshine average, just 5.6 hours a day. Regulars are consistent this counts among the less appealing months to visit overall, spring and autumn named as the genuinely lovely seasons here instead, with West Lake's willows and lotus flowers still months from their best. A warm, waterproof layer remains the standard packing advice regardless of the holiday timing. The record: humidity 76 percent, a 13.5 kph wind and AQI 108.
LunarNewYearCrowdsHitEarlyInTheMonth · February · 1 month ago · Read more on Tripadvisor ↗
Regulars are careful to separate this cold from northern China's: it is a damp cold rather than a dry one, roughly zero to ten degrees, and the wind and moisture make it feel worse than the reading. Our row agrees exactly - 12.5C by day dropping to a felt 10C, and 3.4C nights that stand at 0C. Their advice is scarf and gloves for the extremities, and a covered seat if you take a boat out. They also make the case for coming: the bare trees around West Lake are worth the walk in December, and the crowds have gone. Rain is 47.3mm across 7.5 days, with 3.3cm in the snow column. The winter cost is the air, AQI 152, the highest of this city's year. The record: humidity 73 percent and 6.4 hours of sun.
ColdWithDampNotColdWithFrost · December · 1 month ago · Read more on Tripadvisor ↗
Regulars here sort the year by crowds as much as weather, and their advice is precise: April before the first of May, and October after the national holiday week. May itself is the holiday, which means domestic crowds around the lake and peak prices for a few days at the start. The weather reason is in our row - 168mm across 13 days, the rain season that begins in April carrying on, with only 7.7 hours of sun a day. One poster's measure of it is that a small drizzle soaks you within ten minutes. Warmth has arrived, 28.7C reading as 31C at 76 percent humidity over 17.7C nights. Air is the other cost at AQI 122. The record: a 13.8 kph wind inside 13.7 hours of daylight.
AfterTheFirstOfMay · May · 1 month ago · Read more on Tripadvisor ↗
Regulars recommend March for Hangzhou on two grounds: moderate weather and noticeably fewer large tour groups than the peak, with the early-spring blossom already out around West Lake. Their warning is that April is the rainy season, so come before it - which our row only half supports, because March itself already carries 106.6mm across 13.3 precipitation days under 6.2 hours of sun a day. Take the advice as comparative rather than absolute. What makes it bearable is the destination: several regulars describe a small boat on West Lake in light rain as the best version of it, the hills reduced to a Chinese ink painting and the crowds gone home. Our row gives 18.7C days over 7.9C nights, cool enough for a jacket. The record: humidity 75 percent and AQI 130.
RainSuitsTheLake · March · 1 month ago · Read more on Tripadvisor ↗

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Hangzhou climate normals — August

Daytime high36°C / 96°F🔥 sweltering
Nighttime low26°C / 79°F
Feels like (high)41°C / 106°F
Rainfall114 mm / 4.5 in🌧 rainy
Rainy days12 days
Humidity75%💦 very humid
Dew point25°C / 76°F
Sunshine10.2 h/day
Daylight13.2 h
Wind14 km/h / 9 mph
Air quality (US AQI)133😷 poor

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Hangzhou in August

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

BusySummer break in China, school holidays in 3 of the markets that fill it(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Hangzhou's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Toughest weatherHangzhou's best weather comes in April, October and November — separate windows, not one continuous season.

August coincides with Typhoon season.

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Best weatherFair weatherToughest weather

What's on in Hangzhou in August

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Nature

    Lotus on West Lake

    25 Jun – 15 Aug · usuallyWildflowers & blooms

    The beds off the Su causeway are a summer-only sight and one of the classic ten views. Go at six in the morning; by ten it is heat, humidity and coach parties.

  • Hazard

    Typhoon season

    15 Jul – 30 Sep · usuallyClosures

    Most summers one storm comes ashore on the Zhejiang coast close enough to matter. The airport cancels most flights, West Lake boats and scenic areas close, and high-speed trains through the delta run thin for a day. Source ↗

What's on around the world in August →

Nearby, and something's on

Within 300 km of Hangzhou — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Hangzhou?

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Hangzhou in August — FAQ

Is August a good time to visit Hangzhou?
August in Hangzhou: sweltering, rainy, with poor air quality — not the time — 41°C afternoons. It ranks #10 of 12 months for Hangzhou on SeasonMap's comfort score (49/100).
What is the weather like in Hangzhou in August?
In August, Hangzhou averages a daily high of 35.7°C and a low of 26°C, with about 113.5 mm of rain over roughly 11.8 rainy days.
What is the air quality in Hangzhou in August?
Hangzhou has a mean US Air Quality Index of about 133 in August.

Within 300 km: Huangshan's Summer holiday peak around 10 Jul – 31 Aug.