May weather forecast
Hangzhou, China

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Weather in May

May introduces the first signs of sweltering summer. Hangzhou experiences a notable increment in temperatures from 17.5°C (63.5°F) to 26.3°C (79.3°F). These elongated days receive an average of 129mm (5.08") rainfall. It is a period of heightened vitality where nature thrives. Despite the increase in rainfall, the prevalent warmth, longer duration of daylight, and almost five hours of sunshine each day make for leisurely outdoor activities.

Temperature

Observing a rise in May, the average high-temperature goes from April's agreeable 21.1°C (70°F) to a warm 26.3°C (79.3°F). During May, Hangzhou sees a mean low-temperature of 17.5°C (63.5°F).

Humidity

The average relative humidity in May is 74%.

Rainfall

In Hangzhou, during May, the rain falls for 13.8 days and regularly aggregates up to 129mm (5.08") of precipitation. Throughout the year, in Hangzhou, there are 147.4 rainfall days, and 1438mm (56.61") of precipitation is accumulated.

Sea temperature

In Hangzhou, in May, the average water temperature is 19.4°C (66.9°F).
Note: When the surface water temperature is 19.4°C (66.9°F), most do not enjoy swimming. Breathing control becomes more complex as temperatures drop below 21°C (69.8°F).

Daylight

The average length of the day in May in Hangzhou is 13h and 41min.
On the first day of the month, sunrise is at 05:15 and sunset at 18:37. On the last day of May, in Hangzhou, sunrise is at 04:58 and sunset at 18:55 CST.

Sunshine

In Hangzhou, the average sunshine in May is 5.3h.

UV index

In Hangzhou, China, the average daily maximum UV index in May is 10. A UV Index reading of 8 to 10 represents a very high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 10 during May leads to these instructions:
Being careless can result in skin and eye damage. Always take the necessary safety measures. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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Frequently asked questions

What are the temperatures in Hangzhou in May?

The average high-temperature, in May, in Hangzhou, is 26.3°C (79.3°F), while the average low-temperature is 17.5°C (63.5°F).

What is the average humidity in May in Hangzhou?

The average relative humidity in May in Hangzhou, China, is 74%.

How many days does it rain in May in Hangzhou?

In Hangzhou, China, in May, during 13.8 rainfall days, 129mm (5.08") of precipitation is typically accumulated.

What is the sea temperature in May in Hangzhou?

In Hangzhou, China, the average seawater temperature in May is 19.4°C (66.9°F). For swimming, a surface water temperature of 19.4°C (66.9°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

What is the average length of the day in May in Hangzhou?

In May, the average day length in Hangzhou, China, is 13h and 41min.

When is the sunrise / sunset in May in Hangzhou?

On the first day of May in Hangzhou, China, sunrise is at 05:15 and sunset at 18:37. On the last day of the month, sunrise is at 04:58 and sunset at 18:55 CST.

How many hours of sunshine does Hangzhou have in May?

In May, the average sunshine duration is 5.3h.

What is the UV index intensity in May in Hangzhou?

The average daily maximum UV index in May in Hangzhou is 10. A UV Index of 8 to 10 symbolizes a very high health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in May
Hangzhou, China

Average temperature in May - Hangzhou, China
  • Average high temperature in May: 26.3°C

The warmest month (with the highest average high temperature) is July (33.6°C).
The month with the lowest average high temperature is January (8.3°C).

  • Average low temperature in May: 17.5°C

The month with the highest average low temperature is July (25.2°C).
The coldest month (with the lowest average low temperature) is January (1.8°C).

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Average humidity in May
Hangzhou, China

Average humidity in May - Hangzhou, China
  • Average humidity in May: 74%

The month with the highest relative humidity is June (80%).
The month with the lowest relative humidity is December (73%).

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Average rainfall in May
Hangzhou, China

Average rainfall in May - Hangzhou, China
  • Average rainfall in May: 128.6mm

The wettest month (with the highest rainfall) is June (219.4mm).
The driest month (with the least rainfall) is December (48.9mm).

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Average rainfall days in May
Hangzhou, China

Average rainfall days in May - Hangzhou, China
  • Average rainfall days in May: 13.8 days

The month with the highest number of rainy days is March (15.3 days).
The month with the least rainy days is December (8.5 days).

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Average sea temperature in May
Hangzhou, China

Average sea temperature in May - Hangzhou, China
  • Average sea temperature in May: 19.4°C

The best month for swimming (with the highest average sea temperature) is August (26.9°C).
The coldest month (with the lowest average sea temperature) is February (8.8°C).

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Average daylight in May /
Average sunshine in May
Hangzhou, China

Average daylight in May / Average sunshine in May - Hangzhou, China
  • Average daylight in May: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in May: 5h and 2min

The month with the most sunshine is July (Average sunshine: 6h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).

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Average UV index in May
Hangzhou, China

Average UV index in May - Hangzhou, China
  • Average UV index in May: 10

The months with the highest UV index are June, July and August (UV index 11).
The months with the lowest UV index are January and December (UV index 4).

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Hangzhou, China

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