Climate and monthly weather forecast
Weather in January
In Dachangshan Island, China, in January, the average water temperature is 3.8°C (38.8°F). Note: Within swimming, this is perceived as extraordinarily cold, dangerous, and potentially lethal. Weather in January »
Weather in February
February is the month with the coldest seawater in Dachangshan Island, China, with an average sea temperature of 2.2°C (36°F). Note: In the water-based sport of swimming, this state is life-threatening and exceedingly dangerous. Weather in February »
Weather in March
In March, the average sea temperature in Dachangshan Island, China, is 2.7°C (36.9°F). Note: In relation to swimming, this scenario is excessively cold, perilous, and a direct threat to life. Weather in March »
Weather in April
In April, the average sea temperature in Dachangshan Island, China, is 6.3°C (43.3°F). Note: Dipping in 6.3°C (43.3°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 Dachangshan Island, China, the average seawater temperature in May is 12.3°C (54.1°F). Note: Dipping into 12.3°C (54.1°F) below 10°C (50°F) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Weather in May »
Weather in June
In Dachangshan Island, China, in June, the average water temperature is 18.8°C (65.8°F). Note: The majority of people do not enjoy swimming in 18.8°C (65.8°F). Weather in June »
Weather in July
In Dachangshan Island, China, the average seawater temperature in July is 23.3°C (73.9°F). Note: Swimming in 23.3°C (73.9°F) water can be enjoyable based on one's cold tolerance and conditions like sunshine, wind, and ambient temperature. Weather in July »
Weather in August
With an average sea temperature of 24.3°C (75.7°F), August is the month with the warmest seawater in Dachangshan Island, China. Note: If you're wary of the cold, the surrounding conditions—sunshine, wind, and air temperature become crucial when swimming in 24.3°C (75.7°F) waters. Weather in August »
Weather in September
In Dachangshan Island, China, in September, the average water temperature is 21.8°C (71.2°F). Note: Swimming becomes less enjoyable for most at a surface water temperature of 21.8°C (71.2°F). Weather in September »
Weather in October
In October, the average sea temperature in Dachangshan Island, China, is 17.4°C (63.3°F). Note: In water of 17.4°C (63.3°F), the majority of people do not enjoy swimming. Weather in October »
Weather in November
In Dachangshan Island, China, in November, the average water temperature is 12.8°C (55°F). Note: Dipping in 12.8°C (55°F) at temperatures less than 10°C (50°F) without proper gear can lead to pronounced cold shock and breathing difficulties. Weather in November »
Weather in December
In December, the average sea temperature in Dachangshan Island, China, is 7.8°C (46°F). Note: In 7.8°C (46°F), cold shock and rapid breathing can occur when swimming at temperatures below 10°C (50°F). Weather in December »
Updated: Aug 29, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the month with the coldest sea water?
With an average sea temperature of 2.2°C (36°F), February is the month with the coldest seawater.
When are the longest days?
June has the longest days of the year, with an average of 14h and 54min of daylight.
What is the month with the warmest sea water?
August is the month with the warmest seawater, with an average sea temperature of 24.3°C (75.7°F).
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 30min of daylight.
Is there Daylight Saving Time (DST)?
Dachangshan Island does not observe Daylight Saving Time (DST). CST timezone is used over the entire year.
Average sea temperature
Dachangshan Island, China
The best month for swimming (with the highest average sea temperature) is August (24.3°C).
The coldest month (with the lowest average sea temperature) is February (2.2°C).
Average daylight
Dachangshan Island, China
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
