Climate · Ko Yao

Ko Yao in December

Warm and wet, as the days hold steady.

Typical weather, averaged over 30 years

December in Ko Yao is warm, around 80°F through the day and night. Rain falls on about four days a week, less often as the month goes on, and daylight holds at about 11 hours 39 minutes.December in Ko Yao is warm, around 27°C through the day and night. Rain falls on about four days a week, less often as the month goes on, and daylight holds at about 11 hours 39 minutes.

Typical
80°F27°Caverage
Wet days
4a week · 53% of days
Daylight
11h 39mon average

Is December a good time to visit Ko Yao?


Yes. December is one of Ko Yao'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

Around 80°F in December, against 80°F to 83°F through the year.Around 27°C in December, against 27°C to 28°C through the year.

Chance of a wet day

53% of days in December, against 27% to 95% through the year.

Cloud cover

70% cover in December, against 63% to 80% through the year.

Daylight

11h 39m in December, against 11h 39m to 12h 35m 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. November81°27°6 wet days a weekRain on about six days a week.
  2. December80°27°4 wet days a weekRain on about four days a week.
  3. January81°27°3 wet days a weekRain on about three days a week.

Where Ko Yao sits, in December

Asia/Bangkok

this place
typical high in December 40°F4°C95°F35°C
Sunrise, mid-December
6:31 AMsets 6:10 PM
Above the sea
30 mlow-lying
Latitude
8.1°Nnorthern hemisphere
Nearest of ours
Phuket34 km south-west

The land around Ko Yao, 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 Thailand in December

typical · wet days

Typical weather, averaged over 30 years (1995–2024). Ko Yao sits on a grid square that is mostly sea, where the data hold only a daily average, so the page shows one typical temperature, not a high and a low. 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.