January weather forecastHaikou, China
January
Weather in January
Starting a new calendar year, the city of Haikou ushers in mild temperatures with January lows dipping to 15.4°C (59.7°F) and highs reaching 21°C (69.8°F). The coldest month of the year, January sets itself apart from its neighbouring month, February, offering slightly cooler temperatures. The month greets locals and visitors alike with comfortable weather, although humidity is high, with frequent rainfall. It is an ideal period to visit Haikou and enjoy its outdoor activities and scenic beauty without combating sweltering heat.Temperature
January, on average, is the coldest month, registering a high temperature of 21°C (69.8°F) and a low of 15.4°C (59.7°F).Humidity
In January, the average relative humidity in Haikou is 86%.Rainfall
January is the month with the least rainfall in Haikou. Rain falls for 8.4 days and accumulates 20mm (0.79") of precipitation.Sea temperature
In January, the average sea temperature in Haikou is 20.2°C (68.4°F).Note: For most individuals, swimming in 20.2°C (68.4°F) is not enjoyable. As the water temperature decreases from 21°C (69.8°F) to 15°C (59°F), breathing control becomes increasingly difficult.
Daylight
In January, the average length of the day in Haikou is 11h and 4min.On the first day of January, sunrise is at 07:14 and sunset at 18:10. On the last day of the month, sunrise is at 07:15 and sunset at 18:29 CST.
Sunshine
January and February, with an average of 3.5h of sunshine, are months with the least sunshine in Haikou.UV index
In January, the average daily maximum UV index is 8. A UV Index reading of 8 to 10 represents a very high health risk from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 8 during January translates into the following recommendations:
Without constant care, eyes and skin might suffer damage in a short time. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Haikou, China
- Average high temperature in January: 21°C
The warmest month (with the highest average high temperature) is July (33.1°C).
The month with the lowest average high temperature is January (21°C).
- Average low temperature in January: 15.4°C
The months with the highest average low temperature are June and July (25.5°C).
The coldest month (with the lowest average low temperature) is January (15.4°C).
Average humidity in January
Haikou, China
- Average humidity in January: 86%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is November (80%).
Average rainfall in January
Haikou, China
- Average rainfall in January: 19.5mm
The wettest month (with the highest rainfall) is September (244.1mm).
The driest month (with the least rainfall) is January (19.5mm).
Average rainfall days in January
Haikou, China
- Average rainfall days in January: 8.4 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is December (7.3 days).
Average sea temperature in January
Haikou, China
- Average sea temperature in January: 20.2°C
The best month for swimming (with the highest average sea temperature) is July (29.5°C).
The coldest month (with the lowest average sea temperature) is February (19.6°C).
Average daylight in January /
Average sunshine in January
Haikou, China
- Average daylight in January: 11h and 6min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 10h and 54min).
- Average sunshine in January: 3h and 30min
The month with the most sunshine is July (Average sunshine: 8h and 6min).
The months with the least sunshine are January and February (Average sunshine: 3h and 30min).
Average UV index in January
Haikou, China
- Average UV index in January: 8
The months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 7).
