April weather forecast
Hangzhou, China

April invites warmer temperatures, rising from 12.4°C (54.3°F) to 21.1°C (70°F), giving Hangzhou a more comforting feel. This month registers rainfall of 123mm (4.84"). The climate shifts toward remarkable warmth, and the panorama is often cloaked with vibrant colors of spring. As April progresses, residents and visitors alike can relish a profound change in the atmosphere. Shower laden days become less frequent, paving the way for brighter, more luminescent days.

Temperature

April's arrival brings a change in high-temperatures, moving from a refreshing 14.8°C (58.6°F) in March to a pleasant 21.1°C (70°F). An average low-temperature of 12.4°C (54.3°F) marks the month of April.

Humidity

In April, the average relative humidity in Hangzhou, China, is 74%.

Rainfall

In Hangzhou, in April, it is raining for 14.5 days, with typically 123mm (4.84") of accumulated precipitation. In Hangzhou, during the entire year, the rain falls for 147.4 days and collects up to 1438mm (56.61") of precipitation.

Sea temperature

In Hangzhou, in April, the average water temperature is 14.6°C (58.3°F).
Note: Engaging in a swim in 14.6°C (58.3°F) can threaten life. Brief exposure to 13°C (55.4°F) waters is uneasy, and submersion below 10°C (50°F) can lead to cold shock and disrupted breathing patterns, varying by individual.

Daylight

In Hangzhou, the average length of the day in April is 12h and 55min.
On the first day of the month, sunrise is at 05:48 and sunset at 18:18. On the last day of April, sunrise is at 05:16 and sunset at 18:36 CST.

Sunshine

In Hangzhou, the average sunshine in April is 4.7h.

UV index

The average daily maximum UV index in April in Hangzhou is 10. A UV Index reading of 8 to 10 represents a very high threat to health from exposure to the Sun's UV rays for the average person.
Note: In April, a daily UV index of 10 turns into the following recommendations:
Always prioritize safety measures. Rapid harm can befall unprotected skin and eyes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.