Sumedang weather in September

In September, Sumedang sees average daytime highs of 32°C and overnight lows near 22°C, with 42 mm of rain across 5.6 wet days and about 12 hours of daylight. It is the 1st-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 27% of the time in September, and the air most often feels muggy.

Daylight stretches from about 11 h 54 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Sumedang's 4th-clearest and 2nd-windiest month. For the whole year in context, see Sumedang's year-round climate.

Daytime high
32°
1st warmest
Overnight low
22°
4th coldest
Rainfall
42 mm
5.6 wet days
Daylight
12 hours
5:44 AM – 5:42 PM
Cloud cover
59%
4th clearest
Wind
6 km/h
2nd windiest
Solar energy
6.08 kWh/m²
Travel score
4.2
out of 10

Sumedang is town in West Java, Indonesia.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical September day in Sumedang reaches about 32°C in the afternoon and slips back to 22°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 34°C. Set against its neighbours, September runs on par with August and on par with October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13221
23221
33221
43221
53221
63221
73221
83221
93222
103222
113222
123222
133222
143222
153222
163222
173222
183222
193222
203222
213222
223222
233222
243222
253222
263222
273222
283222
293222
303222

How September really feels in Sumedang

Once humidity and wind are folded in, September averages 30 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
30
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.

Sumedang weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 22°4153012.42.9
Feb29° / 22°38527.412.22.9
Mar29° / 22°40329.8122.8
Apr30° / 22°27226.311.93.0
May30° / 22°12417.611.74.0
Jun30° / 22°6710.711.64.7
Jul31° / 21°426.411.65.0
Aug32° / 21°193.711.84.8
Sep32° / 22°425.6124.2
Oct32° / 22°12113.712.23.5
Nov31° / 22°31024.612.32.9
Dec29° / 22°43429.512.42.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 21% of September, with mostly cloudy or overcast conditions the remaining 52%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15446
25446
35446
45545
55446
65446
75446
85347
95248
105248
115149
125050
135050
144951
154852
164753
174753
184753
194654
204555
214555
224456
234456
244456
254357
264357
274357
284258
294159
304159

Chance of precipitation in September

Any precipitation

Sumedang gets around 42 mm of rain over 5.6 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 19% and peaks near 28% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
117
217
317
417
517
616
716
816
916
1016
1116
1216
1316
1416
1517
1617
1718
1818
1919
2020
2120
2221
2322
2423
2523
2624
2725
2826
2927
3028

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 45% of days. Sticky, muggy-or-worse air turns up on roughly 58% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
117344612
217334613
317334613
417334612
517344612
617344612
718344512
818354512
918364412
1018364411
1108364411
1208374411
1308374411
1408374411
1508364411
1608364511
1708364512
1807354512
1907354513
2007354513
2107344514
2207344514
2306344515
2406334516
2505334417
2605334418
2705334319
2805334320
2904324321
3004324222

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 54 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 12 minutes over September. Sunrise moves from 5:52 AM to 5:36 AM, and sunset from 5:44 PM to 5:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:525:44
211.95:515:44
311.95:515:44
411.95:505:44
511.95:505:43
611.95:495:43
711.95:495:43
811.95:485:43
911.95:485:43
1011.95:475:43
1111.95:475:42
1211.95:465:42
1311.95:455:42
1411.95:455:42
1512.05:445:42
1612.05:445:42
1712.05:435:41
1812.05:435:41
1912.05:425:41
2012.05:425:41
2112.05:415:41
2212.05:405:40
2312.05:405:40
2412.05:395:40
2512.05:395:40
2612.05:385:40
2712.05:385:40
2812.05:375:40
2912.05:375:39
3012.15:365:39

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.08 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.41 kWh/m² to a high of 6.08 kWh/m² in September across the year — September's 6.08 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
26.0Bright
36.0Bright
46.0Bright
56.0Intense
66.0Intense
76.0Intense
86.0Intense
96.1Intense
106.1Intense
116.1Intense
126.1Intense
136.1Intense
146.1Intense
156.1Intense
166.1Intense
176.1Intense
186.1Intense
196.1Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.0Intense
286.0Intense
296.0Intense
306.0Intense
Planning a trip in September

Hazard calendar for Sumedang

In seasonPeak

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

Sumedang's monsoon runs November–April, when most of the year's rain falls.

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

Is September a good time to visit Sumedang?

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

4.2
Sightseeing
4th-best month of the year
6.9
Beach & pool
3rd-best month of the year

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

What to pack for Sumedang in September

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

In September, Sumedang sees daytime highs around 32°C and nights near 22°C. Pack light clothes and sun protection. About 6 days see rain.

light clothessun protection

UV index in Sumedang in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sumedang peaks around March 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 15 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeVery highExtremeMar 16UV 14Jun 15UV 8
UV index (midday)Level
Jan10Extreme
Feb13Extreme
Mar14Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul10Very high
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov8Very high
Dec12Extreme

Air quality in Sumedang in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Sumedang is worst in May — around 72 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyMay 1672 µg/m³Sep 1253 µg/m³
PM2.5 (µg/m³)Level
Jan61Unhealthy
Feb60Unhealthy
Mar69Unhealthy
Apr69Unhealthy
May72Unhealthy
Jun69Unhealthy
Jul60Unhealthy
Aug54Poor
Sep53Poor
Oct55Unhealthy
Nov57Unhealthy
Dec60Unhealthy
Location & terrain

Where is Sumedang?

Sumedang sits at 6.9°S, 107.9°E, 460 m above sea level, in Indonesia. The nearest listed city is Sumedang Utara, 1.0 km away.

Topography around Sumedang

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

Within 3 km, the terrain around Sumedang has significant variations in elevation — a maximum elevation change of 318 m around an average of 517 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,758 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,025 m.

The land around Sumedang is covered by trees (48%), artificial surfaces (26%) and cropland (24%) within 3 km, trees (77%) within 16 km, and trees (58%) and cropland (25%) within 80 km.

3 km
318 m
16 km
1,758 m
80 km
3,025 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Sumedang Utara 1.0 km · Cileunyi 20 km · Paseh 27 km · Lembang 33 km · Majalengka 34 km · Bandung 35 km · Wanaraja 36 km · Subang 37 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 Sumedang (-6.8586°, 107.9164°, elevation 460 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).