January weather forecast
Haikou, China

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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.
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Frequently asked questions

What is the coldest month in Haikou?

Temperature records in Haikou mark January as the coldest month, with highs averaging 21°C (69.8°F) and lows at 15.4°C (59.7°F).

What is the usual temperature for Haikou in January?

January temperatures in Haikou, China, vary between a high-temperature of 21°C (69.8°F) and a low-temperature of 15.4°C (59.7°F).

What is the average humidity in January in Haikou?

The average relative humidity in January in Haikou is 86%.

What is the driest month in Haikou?

The month with the least rainfall in Haikou, China, is January, when the rain falls for 8.4 days and typically collects 20mm (0.79") of precipitation.

How much does it rain in Haikou in January?

In Haikou, in January, during 8.4 rainfall days, 20mm (0.79") of precipitation is typically accumulated.

What is the sea temperature in January in Haikou?

In Haikou, the average seawater temperature in January is 20.2°C (68.4°F). For swimming, a surface water temperature of 20.2°C (68.4°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

How many hours of daylight does Haikou have in January?

The average day length in January in Haikou is 11h and 4min.

What time are sunrise and sunset in January in Haikou?

On the first day of January in Haikou, China, 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.

What is the month with the least sunshine in Haikou?

January and February, with an average of 3.5h of sunshine, are months with the least sunshine in Haikou.

How many hours of sunshine does Haikou have in January?

In Haikou, China, the average sunshine duration in January is 3.5h.

What is the UV index reading in January in Haikou?

The average daily maximum UV index in January in Haikou, China, is 8. A UV Index estimate of 8 to 10 represents a very high health vulnerability from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
22°C 71.6°F
21°C 69.8°F
22.3°C 72.1°F
Average low temperature
16.7°C 62.1°F
15.4°C 59.7°F
16.4°C 61.5°F
Average humidity
81%
86%
88%
Average rainfall
35mm 1.38"
20mm 0.79"
35mm 1.38"
Average rainfall days
7.3
8.4
10.6
Average sea temperature
21.9°C 71.4°F
20.2°C 68.4°F
19.6°C 67.3°F
Average daylight
10h 5min
11h 1min
11h 3min
Average sunshine
4h 1min
3h 3min
3h 3min
Average UV index
7
8
10

Average temperature in January
Haikou, China

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).

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Average humidity in January
Haikou, China

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%).

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Average rainfall in January
Haikou, China

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).

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Average rainfall days in January
Haikou, China

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).

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Average sea temperature in January
Haikou, China

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).

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Average daylight in January /
Average sunshine in January
Haikou, China

Average daylight in January / Average sunshine in January - Haikou, China
  • Average daylight in January: 11h and 1min

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 3min

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).

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Average UV index in January
Haikou, China

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).

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Haikou, China

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