Malang weather in September

In September, Malang sees average daytime highs of 26°C and overnight lows near 17°C, with 43 mm of rain across 8.4 wet days and about 12 hours of daylight. It is the 3rd-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 14% of the time in September, and the air most often feels humid.

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 Malang's 1st-clearest and 1st-windiest month. For the whole year in context, see Malang's year-round climate.

Daytime high
26°
3rd warmest
Overnight low
17°
3rd coldest
Rainfall
43 mm
8.4 wet days
Daylight
12 hours
5:25 AM – 5:23 PM
Cloud cover
67%
1st clearest
Wind
6 km/h
1st windiest
Solar energy
5.9 kWh/m²
Travel score
6.6
out of 10

Malang is city in East Java Province, Indonesia.

Density
6,122/km²
people per km²
Founded
~760 CE

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 26°C through the month.

A typical September day in Malang reaches about 26°C in the afternoon and slips back to 17°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 28°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12617
22617
32617
42617
52617
62617
72617
82617
92617
102617
112617
122617
132617
142617
152617
162717
172717
182717
192717
202717
212717
222717
232717
242717
252717
262717
272717
282717
292718
302718

Malang weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 19°38728.912.43.6
Feb26° / 19°37726.912.33.4
Mar26° / 19°36527.912.13.7
Apr26° / 19°21024.311.84.2
May26° / 18°8715.411.65.7
Jun26° / 18°5010.611.56.4
Jul25° / 17°318.411.66.8
Aug26° / 16°216.411.77.1
Sep26° / 17°438.4126.6
Oct27° / 18°11016.212.25.4
Nov27° / 19°24323.612.44.2
Dec26° / 19°34527.712.53.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 66%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13565
23565
33565
43565
53565
63565
73565
83466
93466
103466
113466
123565
133466
143466
153466
163466
173367
183466
193367
203367
213367
223367
233367
243367
253367
263268
273268
283268
293169
303169

Chance of precipitation in September

Any precipitation

Malang gets around 43 mm of rain over 8.4 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 29% and peaks near 41% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
123
223
323
423
523
623
723
824
924
1024
1124
1224
1325
1426
1526
1627
1728
1829
1930
2031
2131
2232
2333
2434
2535
2637
2738
2839
2940
3041

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 63% of days. Sticky, muggy-or-worse air turns up on roughly 17% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11226512
21226512
31226512
41226512
51226512
61226512
71226611
81226611
91226611
101226512
111226512
121226512
131226512
141216513
151216513
161206514
171206415
181196416
191186417
201186318
211176319
221166320
231166221
241156222
251156024
261146025
271145926
281135927
291135828
301135630

Wind in September

Winds average 6 km/h in September, the windiest month of the year.

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 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 5:34 AM to 5:17 AM, and sunset from 5:25 PM to 5:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:345:25
211.95:335:24
311.95:335:24
411.95:325:24
511.95:325:24
611.95:315:24
711.95:305:24
811.95:305:24
911.95:295:24
1011.95:295:23
1111.95:285:23
1211.95:275:23
1311.95:275:23
1411.95:265:23
1511.95:265:23
1612.05:255:23
1712.05:255:22
1812.05:245:22
1912.05:235:22
2012.05:235:22
2112.05:225:22
2212.05:225:22
2312.05:215:22
2412.05:205:21
2512.05:205:21
2612.05:195:21
2712.05:195:21
2812.05:185:21
2912.15:175:21
3012.15:175:21

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.9 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.3 kWh/m² to a high of 5.9 kWh/m² in September across the year — September's 5.9 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.9Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
196.0Bright
206.0Bright
216.0Bright
226.0Bright
236.0Bright
246.0Bright
256.0Bright
266.0Bright
276.0Bright
286.0Bright
296.0Bright
306.0Bright
Planning a trip in September

Hazard calendar for Malang

In seasonPeak

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

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

Malang's monsoon runs November–April, 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 Malang?

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

6.6
Sightseeing
3rd-best month of the year
6.4
Beach & pool
2nd-best month of the year

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

What to pack for Malang in September

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

In September, Malang sees daytime highs around 26°C and nights near 17°C. Worth packing: light clothes, rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

Sea temperature near Malang in September

The nearest coast averages about 25°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 44 km away) is warmest in March at about 29°C and coldest in August near 25°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul26Warm
Aug25Warm
Sep25Warm
Oct26Warm
Nov28Warm
Dec29Tropical

UV index in Malang 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 Malang peaks around March 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 17 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 highExtremeMar 18UV 15Jun 17UV 8
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun8Very high
Jul10Extreme
Aug12Extreme
Sep13Extreme
Oct14Extreme
Nov12Extreme
Dec11Extreme

Air quality in Malang 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 Malang is worst in April — around 43 µg/m³ PM2.5 (poor), about 1.7× the cleanest month (September, 25 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateApr 1843 µg/m³Sep 1625 µg/m³
PM2.5 (µg/m³)Level
Jan34Moderate
Feb33Moderate
Mar39Poor
Apr43Poor
May41Poor
Jun37Poor
Jul31Moderate
Aug27Moderate
Sep25Moderate
Oct27Moderate
Nov30Moderate
Dec30Moderate
Location & terrain

Where is Malang?

Malang sits at 8.0°S, 112.6°E, 452 m above sea level, in Indonesia. The nearest listed city is Pakisaji, 10 km away.

Topography around Malang

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

Within 3 km, the terrain around Malang has only modest variations in elevation — a maximum elevation change of 95 m around an average of 448 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,030 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,644 m.

The land around Malang is covered by artificial surfaces (83%) within 3 km, trees (60%) and artificial surfaces (22%) within 16 km, and trees (46%) and water (27%) within 80 km.

3 km
95 m
16 km
2,030 m
80 km
3,644 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Pakisaji 10 km · Singosari 10 km · Batu 17 km · Lawang 18 km · Kepanjen 18 km · Gongdanglegi Kulon 22 km · Sumberpucung 26 km · Dampit 29 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 Malang (-7.9797°, 112.6304°, elevation 452 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. 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).