May weather forecast
Hangzhou, China

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.