Climate and monthly weather forecast
Zhoushan, China

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The best time to visit Zhoushan

The best months for a swim in Zhoushan, China, are July through September, with a perfect temperature - varying between 25°C (77°F) and 29°C (84.2°F), and scarce rainfall.

Weather in January

In Zhoushan, China, in January, the average water temperature is 8.9°C (48°F). Note: Swimming in 8.9°C (48°F) is deemed hazardous. Exposure to temperatures below 10°C (50°F) leads to immediate severe cold shock and hyperventilation. Weather in January »

Weather in February

The month with the coldest seawater in Zhoushan, China, is February, with an average sea temperature of 8.2°C (46.8°F). Note: Swimming in 8.2°C (46.8°F) at temperatures under 10°C (50°F) requires thermal swimsuits; otherwise, one can face cold shock and breathing difficulty. Weather in February »

Weather in March

In Zhoushan, China, the average seawater temperature in March is 9.4°C (48.9°F). Note: Without suitable protection, venturing into 9.4°C (48.9°F) waters cooler than 10°C (50°F) can lead to pronounced cold shock and rapid breaths. Weather in March »

Weather in April

In April, the average sea temperature in Zhoushan, China, is 13.8°C (56.8°F). Note: Dipping in 13.8°C (56.8°F) at temperatures less than 10°C (50°F) without proper gear can lead to pronounced cold shock and breathing difficulties. Weather in April »

Weather in May

In Zhoushan, China, the average seawater temperature in May is 18.8°C (65.8°F). Note: Most people find it challenging to enjoy swimming in water that is 18.8°C (65.8°F). Weather in May »

Weather in June

In June, the average sea temperature in Zhoushan, China, is 23.2°C (73.8°F). Note: For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. Weather in June »

Weather in July

The ideal sea water temperature of 26.3°C (79.3°F) makes July in Zhoushan, China, the best time for swimming and other water activities. In Zhoushan, China, in July, the average water temperature is 26.3°C (79.3°F). Note: For engaging in water activities including swimming and diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are perceived as perfect, providing pleasure for extended durations. Weather in July »

Weather in August

The ideal sea water temperature of 27.3°C (81.1°F) makes August in Zhoushan, China, the best time for swimming and other water activities. August is the month with the warmest seawater, with an average sea temperature of 27.3°C (81.1°F). Note: Water activities in surface temperatures between 25°C (77°F) and 29°C (84.2°F) are seen as exceptional and extremely agreeable for lengthened time spans. Weather in August »

Weather in September

An excellent water temperature of 25.9°C (78.6°F) makes September in Zhoushan, China, a prime for swimming and other water activities. In Zhoushan, the average seawater temperature in September is 25.9°C (78.6°F). Note: Water temperatures ranging between 25°C (77°F) and 29°C (84.2°F) are regarded as very warm, making swimming, diving, and similar water activities pleasurable for extended periods. Weather in September »

Weather in October

In Zhoushan, China, in October, the average water temperature is 22.4°C (72.3°F). Note: People sensitive to cold might find swimming in 22.4°C (72.3°F) challenging. Weather in October »

Weather in November

In Zhoushan, China, in November, the average water temperature is 18.1°C (64.6°F). Note: In water of 18.1°C (64.6°F), the majority of people do not enjoy swimming. Weather in November »

Weather in December

In December, the average sea temperature in Zhoushan, China, is 12.7°C (54.9°F). Note: In 12.7°C (54.9°F), cold shock and rapid breathing can occur when swimming at temperatures below 10°C (50°F). Weather in December »
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Frequently asked questions

What month is the sea coldest in Zhoushan?

The month with the coldest seawater in Zhoushan is February, with an average sea temperature of 8.2°C (46.8°F).

When are the longest days in Zhoushan?

The month with the longest days is June, with an average of 14h and 0min of daylight.

What is the month with the warmest sea water in Zhoushan?

With an average sea temperature of 27.3°C (81.1°F), August is the month with the warmest seawater in Zhoushan.

What is the month with the shortest days in Zhoushan?

December has the shortest days of the year, with an average of 10h and 18min of daylight.

Is there Daylight Saving Time (DST) in Zhoushan?

Zhoushan does not observe Daylight Saving Time (DST). CST timezone is used over the entire year.

Average sea temperature
Zhoushan, China

Average sea temperature - Zhoushan, China

The best month for swimming (with the highest average sea temperature) is August (27.3°C).
The coldest month (with the lowest average sea temperature) is February (8.2°C).

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Average daylight
Zhoushan, China

Average daylight - Zhoushan, China

The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).

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Zhoushan, China

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