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Climate · Sumbawa

Sumbawa in December

Hot and wet, as the days hold steady.

Typical weather, averaged over 30 years

December in Sumbawa is hot: highs near 86°F, lows near 78°F. Rain falls on about six days a week, and daylight holds at about 12 hours 36 minutes.December in Sumbawa is hot: highs near 30°C, lows near 26°C. Rain falls on about six days a week, and daylight holds at about 12 hours 36 minutes.

High
86°F30°Caverage
Low
78°F26°Caverage
Wet days
6a week · 81% of days
Daylight
12h 36mon average

Is December a good time to visit Sumbawa?

December sits outside Sumbawa's best months, which run from June to September. Expect hot days and rain on about six days a week.

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 86°F in December, against 85°F to 89°F through the year.Highs near 30°C in December, against 29°C to 32°C through the year.

Chance of a wet day

81% of days in December, against 3% to 92% through the year.

Cloud cover

80% cover in December, against 55% to 80% through the year.

Daylight

12h 36m in December, against 11h 39m to 12h 36m 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. November89°32°low 79°low 26°4 wet days a weekRain on about four days a week.
  2. December86°30°low 78°low 26°6 wet days a weekRain on about six days a week.
  3. January85°29°low 77°low 25°6 wet days a weekRain on about six days a week.

Where Sumbawa sits, in December

Asia/Makassar
this place
typical high in December 40°F4°C95°F35°C
Sunrise, mid-December
5:47 AMsets 6:23 PM
Above the sea
0 mlow-lying
Latitude
8.3°Ssouthern hemisphere
Nearest of ours
Southwest Sumba212 km south-east

The land around Sumbawa, 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 Indonesia in December

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

Typical weather, averaged over 30 years (1995–2024), read 7 km north of Sumbawa. Its own grid square is mostly sea and holds only a daily average, so the page reads the nearest square with a true high and low near the town's height. 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 (0 m) against the climate model's (96 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 (0 m) against the climate model's (96 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.