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Hainan Weather and Climate: A Comprehensive Guide

The temperature in Hainan can vary quite a bit throughout the year. Temperatures can be pleasant during the warmest months, and very cold during the cooler months. It receives mid-range precipitation levels. Let's now guide you through the climate details for a complete overview.

Average maximum day and minimum night temperature

Visitors to Hainan can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a pleasant 21°C in July, the warmest time of the year, to a very cold -0°C during cooler months like January.

At night, temperatures typically drop to an average of around -14°C during these months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Generally, Hainan experiences moderate precipitation patterns, averaging 507 mm yearly. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, July receives high rainfall, averaging 111 mm of precipitation, recorded across 16 rainy days. In contrast, the drier season, December brings less snowfall, with 3.8 mm over a single snowy day. For more details, please visit our Hainan Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Forecast for Hainan

Sun   Dec 22
2°C | -13°C
S 1 m/s
partly cloudy and no rain

partly cloudy and no rain

Mon   Dec 23
3°C | -12°C
W 6 m/s
broken clouds and no rain

broken clouds and no rain

Tue   Dec 24
0°C | -13°C
S 2 m/s
broken clouds and no rain

broken clouds and no rain

The best time of year to visit Hainan in China

During the months of July and August you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Does Hainan have a dry season?
    Yes, the months of January, February, March, November and December are very dry.
  • Which is the warmest month in Hainan?
    July has an average maximum temperature of 21°C and is the warmest month of the year.
  • Which is the coldest month in Hainan?
    The coldest month is January with an average maximum temperature of -0°C.
  • Which is the wettest month in Hainan?
    July tops the wettest month list with 111 mm of rainfall.
  • Which is the driest month in Hainan?
    December is the driest month with 4 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.