The highest day temperature in January 2025 was 80°F. The lowest night temperature was 57°F. The average values for day and night temperatures during January were 69.8°F и 64.6°F respectivly.

The average sea surface temperature in January 2025 for Haikou was 68.4°F. The maximum and minimum values were 67.0°F and 69.6°F respectively.

Most of the days in January are gloomy but you can also expect sunny days.

Precipitation total in January for Haikou is 1.0 in. It makes january one of the least rainy months of the year.

The average wind speed in January is 11.6 mph. It makes January one of the most windy months of the year for Haikou.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Haikou in January is 4.1 hours.