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Climate · Sanya

Sanya in December

Warm and dry, as the days hold steady.

Typical weather, averaged over 30 years

December in Sanya is warm: highs near 79°F, lows near 65°F. Rain falls on about one day a week, and daylight holds at about 11 hours 3 minutes.December in Sanya is warm: highs near 26°C, lows near 18°C. Rain falls on about one day a week, and daylight holds at about 11 hours 3 minutes.

High
79°F26°Caverage
Low
65°F18°Caverage
Wet days
1a week · 11% of days
Daylight
11h 03mon average

Is December a good time to visit Sanya?

Yes. December is one of Sanya's best months (December to February).

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How December sits in the year

week by week

Temperature

Highs near 79°F in December, against 78°F to 91°F through the year.Highs near 26°C in December, against 26°C to 33°C through the year.

Chance of a wet day

11% of days in December, against 11% to 84% through the year.

Cloud cover

56% cover in December, against 49% to 86% through the year.

Daylight

11h 03m in December, against 11h 03m to 13h 13m through the year.

Week by week, lightly smoothed, with December shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. November84°29°low 71°low 22°2 wet days a weekRain on about two days a week.
  2. December79°26°low 65°low 18°1 wet day a weekRain on about one day a week.
  3. January78°26°low 64°low 18°1 wet day a weekRain on about one day a week.

Where Sanya sits, in December

Asia/Shanghai
this place
typical high in December 40°F4°C95°F35°C
Sunrise, mid-December
7:05 AMsets 6:07 PM
Above the sea
5 mlow-lying
Latitude
18.4°Nnorthern hemisphere
Nearest of ours
Xishuangbanna Dai Autonomous Prefecture972 km north-west

The land around Sanya, shaded by its typical high in December, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in China in December

high · low · wet days
See December on the planning mapThe whole year in Sanya

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Sanya. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (5 m) against the climate model's (117 m).Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (5 m) against the climate model's (117 m). Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.