Climate · Indonesia

Southwest Sumba

Hot all year, wet from December to April and drier from June to September.

Typical weather, averaged over 30 years9.5°S0 m above the sea
  1. Jan86°30°78°26°Rain on about six days a week.
  2. Feb86°30°78°26°Rain on about six days a week.
  3. Mar87°31°79°26°Rain on about six days a week.
  4. Apr88°31°79°26°Rain on about five days a week.
  5. May88°31°78°26°Rain on about two days a week.
  6. Jun87°31°77°25°Rain on about one day a week.
  7. Jul86°30°76°24°Rain on about one day a week.
  8. Aug86°30°75°24°Rain on fewer than one day a week.
  9. Sep87°31°76°24°Rain on about one day a week.
  10. Oct88°31°78°26°Rain on about two days a week.
  11. Nov89°32°80°27°Rain on about four days a week.
  12. Dec87°31°79°26°Rain on about six days a week.
Each month: its typical high and low, and dots for wet days a week. Tap a month to open it.The most comfortable months

Highs hardly move, between 86°F and 89°F all year, with nights near 78°F. The rain comes from December to April, on about six days a week. June to September is the driest stretch, with rain on about one day a week. Daylight stays near 12 hours all year.Highs hardly move, between 30°C and 32°C all year, with nights near 26°C. The rain comes from December to April, on about six days a week. June to September is the driest stretch, with rain on about one day a week. Daylight stays near 12 hours all year.

Where Southwest Sumba sits

Asia/Makassar

this place
typical high in Januarytypical high in Februarytypical high in Marchtypical high in Apriltypical high in Maytypical high in Junetypical high in Julytypical high in Augusttypical high in Septembertypical high in Octobertypical high in Novembertypical high in December 40°F4°C95°F35°C
Latitude
9.5°Ssouthern hemisphere
Above the sea
0 mlow-lying
Sunrise, mid-JanuarySunrise, mid-FebruarySunrise, mid-MarchSunrise, mid-AprilSunrise, mid-MaySunrise, mid-JuneSunrise, mid-JulySunrise, mid-AugustSunrise, mid-SeptemberSunrise, mid-OctoberSunrise, mid-NovemberSunrise, mid-December
5:54 AM6:06 AM6:09 AM6:07 AM6:10 AM6:17 AM6:22 AM6:15 AM5:58 AM5:41 AM5:33 AM5:39 AMsets 6:32 PMsets 6:31 PMsets 6:19 PMsets 6:01 PMsets 5:51 PMsets 5:51 PMsets 5:58 PMsets 6:03 PMsets 6:01 PMsets 5:59 PMsets 6:05 PMsets 6:20 PM
Nearest of ours
West Sumba57 km south-east

The land around Southwest Sumba, shaded by its typical high in January, the planning map's own layer.The land around Southwest Sumba, shaded by its typical high in February, the planning map's own layer.The land around Southwest Sumba, shaded by its typical high in March, the planning map's own layer.The land around Southwest Sumba, shaded by its typical high in April, the planning map's own layer.The land around Southwest Sumba, shaded by its typical high in May, the planning map's own layer.The land around Southwest Sumba, shaded by its typical high in June, the planning map's own layer.The land around Southwest Sumba, shaded by its typical high in July, the planning map's own layer.The land around Southwest Sumba, shaded by its typical high in August, the planning map's own layer.The land around Southwest Sumba, shaded by its typical high in September, the planning map's own layer.The land around Southwest Sumba, shaded by its typical high in October, the planning map's own layer.The land around Southwest Sumba, shaded by its typical high in November, the planning map's own layer.The land around Southwest Sumba, 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.

Through the year

week by week

Temperature

Highs from 86°F in January and February to 89°F in November.Highs from 30°C in January and February to 32°C in November.

Chance of a wet day

Wettest in January (91% of days), driest in August (7%).

Cloud cover

Clearest in August (54% cover), cloudiest in December and January (78%).

Daylight

About 12 hours all year, as near the equator.

Week by week, lightly smoothed. Shading marks the seasons; the olive line, the most comfortable months. Hover or tap a week for its figures.

Month by month

°F°C

Southwest Sumba, month by month: the typical high and low, wet days a week, cloud cover and daylight.
MonthTypical low to highWet days a weekCloudDaylight
JanuaryRainy season
78°26°86°30°
6 days78%12h 37m
FebruaryRainy season
78°26°86°30°
6 days77%12h 25m
MarchRainy season
79°26°87°31°
6 days74%12h 10m
AprilRainy season
79°26°88°31°
5 days71%11h 54m
May
78°26°88°31°
2 days64%11h 41m
JuneDry seasonMost comfortable
77°25°87°31°
1 day60%11h 35m
JulyDry seasonMost comfortable
76°24°86°30°
1 day57%11h 38m
AugustDry seasonMost comfortable
75°24°86°30°
no days54%11h 49m
SeptemberDry seasonMost comfortable
76°24°87°31°
1 day55%12h 04m
October
78°26°88°31°
2 days64%12h 20m
November
80°27°89°32°
4 days71%12h 34m
DecemberRainy season
79°26°87°31°
6 days78%12h 40m

When is the best time to visit Southwest Sumba?


Southwest Sumba is hot all year. Its most comfortable months are June to September: highs near 87°F, nights near 76°F, and rain on about one day a week.Southwest Sumba is hot all year. Its most comfortable months are June to September: highs near 31°C, nights near 24°C, and rain on about one day 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.

Questions


What is the warmest month in Southwest Sumba?

November, with highs near 89°F and lows near 80°F. The coolest are January and February, with highs near 86°F.November, with highs near 32°C and lows near 27°C. The coolest are January and February, with highs near 30°C.

When does it rain most in Southwest Sumba?

January, with rain on about six days a week. August is the driest, with rain on fewer than one day a week.

How long are the days in Southwest Sumba?

About 12 hours all year, as near the equator.

When are the skies clearest in Southwest Sumba?

August, when cloud covers about 54% of the sky on average. December and January are the cloudiest, at about 78%.

Places with a year like Southwest Sumba's

by their highs, lows and wet days

Their highs, lows, wet days and cloud run closest to Southwest Sumba's through the year, one place a country. “Six months apart”: their winter is Southwest Sumba's summer.

Elsewhere in Indonesia

All of Indonesia

Where to stay

1 in our collection

Typical weather, averaged over 30 years (1995–2024), read 8 km north-east of Southwest Sumba. 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 (52 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 (52 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.