Kepanjen weather in September

In September, Kepanjen sees average daytime highs of 28°C and overnight lows near 20°C, with 50 mm of rain across 6.5 wet days and about 12 hours of daylight. It is the 9th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 12% 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 Kepanjen's 5th-clearest and 3rd-windiest month. For the whole year in context, see Kepanjen's year-round climate.

Daytime high
28°
9th warmest
Overnight low
20°
3rd coldest
Rainfall
50 mm
6.5 wet days
Daylight
12 hours
5:25 AM – 5:23 PM
Cloud cover
68%
5th clearest
Wind
11 km/h
3rd windiest
Solar energy
6.01 kWh/m²
Travel score
6.5
out of 10

Kepanjen is subdistrict in Malang Regency, East 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 28°C through the month.

A typical September day in Kepanjen reaches about 28°C in the afternoon and slips back to 20°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 29°C. Set against its neighbours, September runs on par with August and about 1°C cooler than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12720
22820
32820
42820
52820
62820
72820
82820
92820
102820
112820
122820
132820
142820
152820
162820
172820
182821
192821
202821
212821
222821
232821
242821
252821
262821
272821
282821
292821
302821

How September really feels in Kepanjen

Once humidity and wind are folded in, September averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Kepanjen weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 23°35929.112.43.0
Feb29° / 23°32026.312.33.0
Mar29° / 23°34628.212.13.1
Apr29° / 23°21722.911.83.7
May29° / 22°10414.111.65.2
Jun28° / 21°659.611.56.2
Jul27° / 20°35611.66.9
Aug27° / 20°244.511.77.1
Sep28° / 20°506.5126.5
Oct29° / 21°10814.812.24.9
Nov29° / 22°27023.712.43.6
Dec29° / 23°33728.212.53.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 22% of September, with mostly cloudy or overcast conditions the remaining 66%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13565
23565
33565
43565
53664
63664
73565
83565
93565
103565
113565
123466
133466
143466
153466
163565
173466
183466
193466
203367
213367
223466
233367
243367
253367
263367
273268
283169
293169
303070

Chance of precipitation in September

Any precipitation

Kepanjen gets around 50 mm of rain over 6.5 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 23% and peaks near 33% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
118
217
317
417
517
617
717
818
918
1018
1119
1220
1320
1421
1522
1623
1724
1825
1925
2026
2126
2227
2328
2428
2529
2630
2731
2832
2932
3033

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 67% of days. Sticky, muggy-or-worse air turns up on roughly 89% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11147114
21147114
31147114
41147114
51147114
61147015
71137115
81137115
91137016
101136917
110137017
120136918
130126919
140126820
150126721
160116722
170116722
180116623
190106624
20096625
21096625
22096526
23086527
24086428
25076429
26076429
27076330
28076231
29066232
30066133

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

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
211.95:345:25
311.95:335:24
411.95:325:24
511.95:325:24
611.95:315:24
711.95:315:24
811.95:305:24
911.95:305:24
1011.95:295:24
1111.95:285:23
1211.95:285:23
1311.95:275:23
1411.95:275:23
1511.95:265:23
1612.05:255:23
1712.05:255:23
1812.05:245:22
1912.05:245:22
2012.05:235:22
2112.05:225:22
2212.05:225:22
2312.05:215:22
2412.05:215:22
2512.05:205:21
2612.05:195:21
2712.05:195:21
2812.05:185:21
2912.15:185:21
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 6.01 kWh/m².

For context, solar energy here swings from a low near 4.64 kWh/m² to a high of 6.02 kWh/m² in October across the year — September's 6.01 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.9Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.9Bright
96.0Bright
106.0Bright
116.0Bright
126.0Intense
136.0Intense
146.0Intense
156.0Intense
166.0Intense
176.0Intense
186.1Intense
196.1Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
Planning a trip in September

Hazard calendar for Kepanjen

In seasonPeak

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

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

Kepanjen'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 Kepanjen?

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

6.5
Sightseeing
3rd-best month of the year
7.0
Beach & pool
3rd-best month of the year

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

What to pack for Kepanjen in September

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

In September, Kepanjen sees daytime highs around 28°C and nights near 20°C. Pack light clothes and sun protection. About 7 days see rain.

light clothessun protection

Sea temperature near Kepanjen 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 28 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 Kepanjen 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 Kepanjen peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 16 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 17UV 15Jun 16UV 8
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar15Extreme
Apr13Extreme
May10Extreme
Jun8Very high
Jul10Very high
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov10Extreme
Dec12Extreme

Air quality in Kepanjen 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 Kepanjen 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 Kepanjen?

Kepanjen sits at 8.1°S, 112.6°E, 341 m above sea level, in Indonesia. The nearest listed city is Pakisaji, 8.0 km away.

Topography around Kepanjen

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

Within 3 km, the terrain around Kepanjen has only modest variations in elevation — a maximum elevation change of 82 m around an average of 338 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 880 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,644 m.

The land around Kepanjen is covered by trees (43%), cropland (31%) and artificial surfaces (25%) within 3 km, trees (68%) within 16 km, and trees (47%) and water (29%) within 80 km.

3 km
82 m
16 km
880 m
80 km
3,644 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Pakisaji 8.0 km · Gongdanglegi Kulon 9.0 km · Sumberpucung 10 km · Malang 18 km · Dampit 21 km · Singosari 28 km · Batu 29 km · Lawang 35 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 Kepanjen (-8.1303°, 112.5727°, elevation 341 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).