Waingapu weather in September

In September, Waingapu sees average daytime highs of 31°C and overnight lows near 21°C, with 16 mm of rain across 3.4 wet days and about 11.9 hours of daylight. It is the 3rd-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 55% of the time in September, and the air most often feels muggy.

Daylight stretches from about 11 h 48 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Waingapu's 1st-clearest and 5th-windiest month. For the whole year in context, see Waingapu's year-round climate.

Daytime high
31°
3rd warmest
Overnight low
21°
4th coldest
Rainfall
16 mm
3.4 wet days
Daylight
11 h 54 min
5:55 AM – 5:52 PM
Cloud cover
40%
1st clearest
Wind
9 km/h
5th windiest
Solar energy
6.76 kWh/m²
Travel score
5.6
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical September day in Waingapu reaches about 31°C in the afternoon and slips back to 21°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13020
23020
33020
43021
53021
63021
73021
83021
93021
103021
113121
123121
133121
143121
153121
163121
173121
183121
193121
203121
213121
223121
233121
243121
253121
263121
273122
283122
293122
303122

How September really feels in Waingapu

Once humidity and wind are folded in, September averages 15 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
15
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Waingapu weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 23°32527.512.53.1
Feb29° / 23°30225.812.33.1
Mar29° / 23°25726.112.13.3
Apr29° / 22°13618.911.84.1
May29° / 22°4911.611.65.2
Jun29° / 21°226.511.46.1
Jul29° / 20°164.311.56.5
Aug29° / 20°72.211.76.5
Sep31° / 21°163.411.95.6
Oct32° / 22°448.112.24.6
Nov31° / 23°13918.512.43.5
Dec30° / 23°28526.412.63.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 55% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 28%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17228
27228
37228
47327
57327
67426
77426
87426
97426
107426
117426
127426
137426
147426
157327
167327
177327
187327
197228
207228
217228
227228
237129
247129
257129
267030
277030
287030
296931
306931

Chance of precipitation in September

Any precipitation

Waingapu gets around 16 mm of rain over 3.4 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 11% and peaks near 17% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
17
27
38
48
58
68
78
89
99
109
119
1210
1310
1410
1511
1611
1711
1812
1912
2013
2113
2213
2314
2415
2515
2616
2716
2816
2917
3017

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the muggy band about 60% of days. Sticky, muggy-or-worse air turns up on roughly 70% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1430606
2430606
3430606
4330616
5330616
6331606
7331606
8331597
9331597
10232597
11232588
12232588
13232588
14231589
15231589
162315710
172305711
182295811
192285812
202265913
212256013
222246014
232236015
242226115
252216116
262206216
272206117
282196118
291186318
301176319

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 48 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over September. Sunrise moves from 6:04 AM to 5:46 AM, and sunset from 5:53 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:045:53
211.86:045:53
311.86:035:53
411.86:025:53
511.86:025:53
611.96:015:53
711.96:015:53
811.96:005:52
911.95:595:52
1011.95:595:52
1111.95:585:52
1211.95:575:52
1311.95:575:52
1411.95:565:52
1511.95:555:52
1611.95:555:52
1712.05:545:52
1812.05:545:51
1912.05:535:51
2012.05:525:51
2112.05:525:51
2212.05:515:51
2312.05:505:51
2412.05:505:51
2512.05:495:51
2612.05:485:51
2712.05:485:51
2812.15:475:51
2912.15:475:51
3012.15:465:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.76 kWh/m².

For context, solar energy here swings from a low near 5 kWh/m² to a high of 7.12 kWh/m² in October across the year — September's 6.76 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.4Intense
26.4Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.6Intense
86.6Intense
96.6Intense
106.7Intense
116.7Intense
126.7Intense
136.7Intense
146.7Intense
156.8Intense
166.8Intense
176.8Intense
186.8Intense
196.8Intense
206.8Intense
216.9Intense
226.9Intense
236.9Intense
246.9Intense
256.9Intense
266.9Intense
277.0Intense
287.0Intense
297.0Intense
307.0Intense
Planning a trip in September

Hazard calendar for Waingapu

In seasonPeak

None of Waingapu's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Waingapu sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Waingapu's monsoon runs December–March, when most of the year's rain falls.

Cyclone
Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Waingapu?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.6
Sightseeing
4th-best month of the year
8.0
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Waingapu for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Waingapu in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Waingapu sees daytime highs around 31°C and nights near 21°C. Pack light clothes and sun protection. About 3 days see rain.

light clothessun protection

Sea temperature near Waingapu in September

The nearest coast averages about 27°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 13 km away) is warmest in December at about 29°C and coldest in August near 26°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul26Warm
Aug26Warm
Sep27Warm
Oct28Tropical
Nov29Tropical
Dec29Tropical

UV index in Waingapu in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Waingapu peaks around February 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 10 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 21UV 15Jul 10UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug12Extreme
Sep14Extreme
Oct13Extreme
Nov13Extreme
Dec13Extreme
Location & terrain

Where is Waingapu?

Waingapu sits at 9.7°S, 120.3°E, 26 m above sea level, in Indonesia. The nearest listed city is Tambolaka, 115 km away.

Sumbawa Besar

Topography around Waingapu

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Waingapu.

Within 3 km, the terrain around Waingapu has only modest variations in elevation — a maximum elevation change of 92 m around an average of 23 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 670 m; within 80 km, large variations in elevation — a maximum elevation change of 1,192 m.

The land around Waingapu is covered by grassland (31%) and trees (28%) within 3 km, grassland (52%) and water (30%) within 16 km, and water (54%) and grassland (27%) within 80 km.

3 km
92 m
16 km
670 m
80 km
1,192 m
treesgrasslandcroplandartificial surfaceswatermangroves
September weather nearby: Tambolaka 115 km · Ruteng 118 km · Labuan Bajo 135 km · Ende 178 km · Bima 215 km · Dompu 234 km · Maumere 243 km · Sumbawa Besar 338 km

Indonesia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$5,060
2025
Happiness
5.6 / 10
World Happiness, 2025
Safe drinking water
30%
of population, 2024
Homicide rate
0.3
per 100k, 2022
Road deaths
11.3
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 471
Religion
Muslim 87%Protestant 8%Roman Catholic 3%Hindu 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Waingapu (-9.6567°, 120.2641°, elevation 26 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).