August Weather in Hangzhou, China

Last updated: August 21, 2025

August in Hangzhou, China presents a warm and humid climate, with maximum temperatures soaring up to a blistering 40°C (103°F), while the average temperature hovers around a comfortable 30°C (86°F). With minimum temperatures rarely dropping below 18°C (65°F), the summer heat is palpable. Rainfall is frequent, accumulating to 163 mm (6.4 in) over approximately 14 days, contributing to a humid environment with humidity levels reaching a notable 91%. Visitors should prepare for both the heat and the rain, ensuring a blend of outdoor attractions and indoor respite during this vibrant summer month.

August Temperature in Hangzhou

In August, Hangzhou experiences its warmest temperatures of the year, with averages reaching 30°C (86°F) and maximums soaring to a sweltering 40°C (103°F). This month follows a steady rise in warmth from April’s mild 18°C (64°F), culminating in the peak summer heat that characterizes July and August. Nights remain comfortably balmy, typically not dipping below 18°C (65°F), making it ideal for evening strolls by the West Lake. However, with the rising heat, humidity intensifies, adding a sultry layer to the air. As summer transitions to fall, temperatures in September begin to cool, marking the decline from this peak, yet August stands as a vibrant reminder of the region's warm, humid summer climate.

August Weather in Hangzhou: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Hangzhou, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hangzhou, August typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec434655647378858678685846
Data source: Temperature data for Hangzhou generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Hangzhou

In August, Hangzhou experiences a significant shift in weather patterns, marked by a precipitation total of 163 mm (6.4 in) over approximately 14 days. This continues the trend of high rainfall that begins in June, where the city records its peak precipitation of 348 mm (13.7 in). Following the deluge of July with 233 mm (9.2 in), August sees a slight decrease, yet still remains among the wettest months of the year. These summer rains are essential for maintaining the lush landscapes that define the region, providing vital moisture before transitioning into the drier months of September and October. The combination of consistent precipitation and warm temperatures creates a vibrant environment, characteristic of Hangzhou's unique climate.

August Precipitation Trends in Hangzhou

The chart displays monthly precipitation patterns in Hangzhou, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Hangzhou, August typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec796811989165348233163133566066
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Hangzhou

In August, Hangzhou experiences a peak in humidity at 91%, just slightly lower than the sweltering 93% of July. This pattern reflects the city’s humid subtropical climate, with high humidity persisting through the summer months. As the year progresses, humidity begins to decline, dropping to 81% in September, signaling a transition to more comfortable conditions. Notably, the trend indicates that the summer months maintain a consistent high humidity level, with April through August all hovering above 87%. This sustained moisture can create a sticky, tropical feel that characterizes the region's summer weather, making it a unique experience for both residents and visitors.

August Average Humidity in Hangzhou

This chart illustrates the average monthly humidity levels in Hangzhou, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Hangzhou is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%73%81%87%87%89%93%91%81%80%82%77%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Hangzhou

In August, Hangzhou, China, experiences a consistently high UV Index, peaking at 11, which falls under the extreme exposure category. This significant level of UV radiation requires caution, as the burn time is a mere 10 minutes under direct sunlight. Following a trend established over the summer months, August maintains the same intense conditions seen in June and July, indicating a sustained period of high solar exposure. As summer transitions toward fall, residents should remain vigilant; a decrease in UV levels is expected in September, where the index dips to 10. For those looking to understand more about the UV trends in this vibrant city, detailed information can be found at Hangzhou UV Index.

Maximum UV Index Levels in Hangzhou for August

The chart shows the monthly maximum UV Index (UVI) for Hangzhou in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in Hangzhou typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec569101111111110864
Data source: Hangzhou August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

August Sunshine in Hangzhou

August shines brightly in Hangzhou, China, with an impressive 312 hours of sunshine, marking it as the sunniest month of the year. Following a steady rise from 195 hours in February, sunshine hours peak dramatically in the summer months, reflecting the region's beautiful transition from spring to late summer. This consistent increase culminates in August, where the warmth and light invite both locals and tourists to indulge in outdoor activities and explore the city’s stunning landscapes. As the seasons change, sunshine hours gradually taper off in September, dropping to 243 hours, showcasing a typical trend as Hangzhou shifts into autumn. The overall pattern highlights a vibrant summer season, encouraging a lively atmosphere that celebrates the abundance of sunlight.

Monthly Sunshine Duration in Hangzhou: August Highlighted

The August sunshine duration represents the total number of hours Hangzhou experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec142h195h210h249h273h247h285h312h243h227h214h210h
Data source: Hangzhou August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Hangzhou During August

In August, Hangzhou experiences a 30% chance of sunny weather, a modest increase compared to the particularly overcast months of July and June, which see only 15% and 19% respectively. This upward trend in sunshine indicates a shift towards slightly more favorable weather, yet it remains less promising than the sunny days typically enjoyed in January and November, when the likelihood peaks at 51% and 46%. As summer transitions into autumn, visitors can expect a mix of sun and clouds, making August a transitional month in Hangzhou’s weather pattern.

Percentage of Sunny Days in August in Hangzhou

The chart illustrates the percentage of sunny days in Hangzhou throughout the year, with August highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Hangzhou experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec51%38%26%31%27%19%15%30%44%39%46%65%
Data source: Hangzhou August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Hangzhou in August

In Hangzhou, China, August brings a delightful continuation of summer's warmth with approximately 13 hours of daylight, which is on par with July's duration. As the year progresses, the trend showcases a gradual increase in daylight from 10 hours in January to its peak of 14 hours in June, before gently tapering off in the later months. This rhythm of extended daylight creates the perfect opportunity for outdoor activities and exploration during the vibrant late summer days, as nights grow subtly longer heading into the autumn months of September and October. With each passing month, Hangzhou captivates its visitors with lush landscapes illuminated by the sun's golden embrace.

Average Daylight Hours in Hangzhou for August

The chart illustrates the variation in daylight duration in Hangzhou throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 25m11h 6m11h 59m12h 54m13h 40m14h 2m13h 51m13h 11m12h 19m11h 24m10h 37m10h 13m
Data source: Hangzhou daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Hangzhou

In Hangzhou, China, the August wind offers a gentle breath of nature, with an average speed of just 2.0 m/s (4 mph). This slight decline from the summer peak in July, where the wind picked up to 3.2 m/s (7 mph), marks a transition towards the more temperate fall months. Across the year, the wind consistency stands out, hovering around 2.5 m/s (6 mph) from January through April, before dipping in the hotter months of May and June. Interestingly, as the seasons shift towards autumn, the wind speeds gradually increase again, reaching 2.6 m/s (6 mph) in October. Thus, August exemplifies the summer lull in wind activity, setting the stage for the refreshing breezes of the upcoming months.

Average August Wind Speed in Hangzhou

The chart displays monthly wind speed patterns in Hangzhou, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.52.52.52.52.32.03.22.0 m/s2.42.62.42.3
Data source: Hangzhou August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Hangzhou Compares to Other Months

Weather in Hangzhou varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Hangzhou, focusing on differences in temperature, rainfall, humidity, and UV levels.

August and January present stark contrasts in weather conditions. In August, temperatures soar with an average of 30°C (86°F), peaking at a blistering 40°C (103°F), while humidity remains high at 91%, resulting in a sultry and often oppressive atmosphere. Rainfall is frequent, with 14 days of precipitation accumulating to 163 mm (6.4 in). Conversely, January offers a much colder climate, with average temperatures around 6°C (43°F) and a maximum of only 24°C (75°F). The month experiences significantly less precipitation, totaling 79 mm (3.1 in) over 9 days, and a lower humidity level at 70%. For a detailed look at January’s weather specifics, you can check Hangzhou weather in January.

August and February present stark contrasts in weather patterns. In August, temperatures soar with a minimum of 18°C (65°F) and an average high of 30°C (86°F), occasionally reaching up to 40°C (103°F). The month is quite humid with 91% humidity, and receives significant rainfall, averaging 163 mm (6.4 in) over about 14 days. In contrast, February experiences much cooler temperatures, with a minimum of -4°C (25°F) and an average of 8°C (46°F), peaking at 27°C (80°F). Rainfall is lighter in February, totaling 68 mm (2.7 in) over approximately 9 days, and humidity levels are lower at 73%. For more details, check out Hangzhou weather in February.

August and March present stark contrasts in weather. In August, temperatures can soar with a minimum of 18°C (65°F) and an average high of 30°C (86°F), reaching up to a sweltering 40°C (103°F). This month is characterized by high humidity at 91% and significant precipitation, with 163 mm (6.4 in) falling over 14 days. In comparison, March offers a much cooler climate, with temperatures ranging from a minimum of 2°C (35°F) to an average of 13°C (56°F) and a maximum of 29°C (85°F). Although it experiences slightly less rainfall at 119 mm (4.7 in) over the same number of days, March's humidity is still notable at 81%. For a more detailed look at March weather, visit Hangzhou weather in March.

When comparing the weather in August and April, notable differences emerge in both temperature and precipitation. August experiences much warmer temperatures, with averages reaching 30°C (86°F) and maximums soaring up to 40°C (103°F), while April sees milder averages around 18°C (64°F) and a maximum of 34°C (94°F). Additionally, August is characterized by higher humidity levels at 91% and significantly more rainfall, totaling 163 mm (6.4 in) across 14 days. In contrast, April has a more moderate humidity of 87% and only 89 mm (3.5 in) of precipitation over 10 days. For more details on April weather, you can visit Hangzhou weather in April.

August and May both experience warm temperatures, but August tends to be hotter overall, with average highs reaching 30°C (86°F) compared to May's average of 23°C (73°F). While the maximum temperature in August can soar up to 40°C (103°F), May sees a slightly lower peak at 38°C (101°F). Precipitation levels are quite similar, with August receiving 163 mm (6.4 in) over 14 days and May totaling 165 mm (6.5 in) over 12 days. Additionally, humidity is higher in August at 91%, compared to May's 87%. For a closer look at May's weather patterns, check out Hangzhou weather in May.

When comparing the weather in August and June, it is evident that August tends to be hotter with an average temperature of 30°C (86°F), while June has a lower average of 25°C (78°F). The maximum temperatures reach 40°C (103°F) in August compared to 37°C (99°F) in June. However, June experiences significantly higher precipitation, with 348 mm (13.7 in) over 18 days, compared to August's 163 mm (6.4 in) over 14 days. Both months exhibit high humidity levels, although August is slightly more humid at 91% compared to June's 89%. For more details on June weather, you can visit Hangzhou weather in June.

In comparing the weather of August and July, we see some notable differences. August features slightly lower temperatures, with minimums around 18°C (65°F), averages at 30°C (86°F), and maximums reaching 40°C (103°F), while July experiences higher minimum temperatures of 22°C (71°F) and an average of 29°C (85°F). However, July tends to be wetter, with a total precipitation of 233 mm (9.2 in) over 17 days compared to August's 163 mm (6.4 in) over 14 days. Humidity levels are quite similar, with August at 91% and July at 93%. For more detailed insights on July's weather, you can visit Hangzhou weather in July.

August and September present noticeable differences in weather patterns. August is characterized by higher temperatures, with an average of 30°C (86°F) and peaks reaching up to 40°C (103°F), while September sees a decline in average temperatures to 26°C (78°F) and maximums of 36°C (98°F). Precipitation remains prevalent in both months, but August records slightly more rainfall at 163 mm (6.4 in) over 14 days compared to September's 133 mm (5.2 in) over 13 days. Additionally, humidity is higher in August at 91%, while it eases to 81% in September. For more details on September's weather in Hangzhou, you can refer to Hangzhou weather in September.

August and October present stark contrasts in weather patterns. In August, temperatures soar with a minimum of 18°C (65°F) and an average high reaching 40°C (103°F), accompanied by high humidity levels of 91% and significant rainfall of 163 mm (6.4 in) over 14 days. In contrast, October brings much cooler temperatures, with a minimum of 9°C (48°F) and an average of 20°C (68°F), making it noticeably more comfortable. Rainfall decreases substantially to 56 mm (2.2 in) across just 6 rainy days, and humidity drops to 80%. For those interested in more details about the weather, visit Hangzhou weather in October.

August and November present strikingly different weather patterns. In August, temperatures soar, averaging around 30°C (86°F) and peaking at a sweltering 40°C (103°F), while the high humidity of 91% and considerable rainfall—163 mm (6.4 in) over 14 days—create a sticky atmosphere. In contrast, November brings much cooler temperatures, with averages dropping to around 14°C (58°F) and a maximum of 31°C (89°F). Precipitation is also less frequent and lighter, totaling 60 mm (2.4 in) over just 9 days, along with a decrease in humidity to 82%. For more specific insights about the weather during this month, check out Hangzhou weather in November.

In August, the weather is characterized by high temperatures, with minimums around 18°C (65°F) and daily averages reaching up to 30°C (86°F), peaking at a maximum of 40°C (103°F). The month experiences significant humidity at 91% and substantial rainfall, with 163 mm (6.4 in) spread over 14 days. In contrast, December brings a dramatic shift in climate; temperatures drop significantly, with minimums at -4°C (25°F), averages around 8°C (47°F), and maximums of 23°C (74°F). This month sees much less precipitation, totaling 66 mm (2.6 in) across just 8 days, alongside a lower humidity level of 77%. For more detailed information on December weather, you can visit Hangzhou weather in December.

Compare Hangzhou's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Hangzhou

As August rolls in, Hangzhou experiences a unique blend of warmth and humidity, setting it apart from other months. With temperatures soaring to a maximum of 40°C (103°F), the sweltering heat can feel intense, often accompanied by a high humidity level of 91% that adds to the overall discomfort. Despite averaging a milder 30°C (86°F), the significant precipitation—with about 163 mm over 14 days—brings frequent showers that can provide some relief. This month blends the extremes of summer, making it essential to prepare for both the heat and the rain while enjoying the vibrant beauty of Hangzhou. For a deeper dive into what to expect throughout the year, check out the detailed insights in Hangzhou Climate.