Indralaya weather in September

In September, Indralaya sees average daytime highs of 33°C and overnight lows near 24°C, with 77 mm of rain across 12.2 wet days and about 12 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 11% of the time in September, and the air most often feels oppressive.

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

Daytime high
33°
1st warmest
Overnight low
24°
6th coldest
Rainfall
77 mm
12.2 wet days
Daylight
12 hours
5:56 AM – 5:55 PM
Cloud cover
74%
4th clearest
Wind
8 km/h
2nd windiest
Solar energy
5.55 kWh/m²
Travel score
3.1
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 33°C through the month.

A typical September day in Indralaya reaches about 33°C in the afternoon and slips back to 24°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 35°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13324
23324
33324
43324
53324
63324
73324
83324
93324
103324
113324
123324
133324
143324
153324
163324
173324
183324
193324
203324
213324
223324
233324
243324
253324
263324
273324
283324
293324
303324

How September really feels in Indralaya

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.

Indralaya weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°22727.512.22.7
Feb31° / 24°22624.512.12.6
Mar31° / 24°28528.8122.4
Apr32° / 24°26427.911.92.3
May32° / 24°17724.811.92.7
Jun31° / 24°11319.311.83.2
Jul31° / 23°10717.111.83.5
Aug32° / 24°711311.93.5
Sep33° / 24°7712.2123.1
Oct33° / 24°16118.612.12.7
Nov32° / 24°26426.312.12.4
Dec31° / 24°29229.112.22.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 72%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13466
23466
33466
43367
53367
63367
73169
83169
93070
103070
112872
122872
132674
142674
152674
162674
172575
182575
192575
202575
212575
222575
232476
242476
252476
262575
272575
282476
292476
302575

Chance of precipitation in September

Any precipitation

Indralaya gets around 77 mm of rain over 12.2 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 41% and peaks near 45% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
144
243
343
442
542
641
741
841
940
1040
1140
1240
1340
1440
1540
1640
1740
1840
1940
2040
2141
2241
2341
2442
2542
2643
2743
2844
2945
3045

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 65% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1015769
2016759
3017749
4018739
5019729
6020719
7021709
8022699
90226810
100236710
110236710
120236611
130246511
140246511
151246312
161246312
171246213
181246213
191246114
201246114
211246114
221246015
231236115
241236115
251236016
261236016
271236016
281235917
291235917
301235818

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 54 min at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over September. Sunrise moves from 6:03 AM to 5:50 AM, and sunset from 5:59 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:035:59
211.96:025:59
311.96:025:59
411.96:025:58
511.96:015:58
612.06:015:58
712.06:005:58
812.06:005:57
912.05:595:57
1012.05:595:57
1112.05:585:56
1212.05:585:56
1312.05:585:56
1412.05:575:56
1512.05:575:55
1612.05:565:55
1712.05:565:55
1812.05:555:55
1912.05:555:54
2012.05:545:54
2112.05:545:54
2212.05:535:53
2312.05:535:53
2412.05:525:53
2512.05:525:53
2612.05:525:52
2712.05:515:52
2812.05:515:52
2912.05:505:52
3012.05:505:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.55 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.23 kWh/m² to a high of 5.55 kWh/m² in September across the year — September's 5.55 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.4Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.6Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in September

Is September a good time to visit Indralaya?

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

3.1
Sightseeing
4th-best month of the year
5.6
Beach & pool
2nd-best month of the year

September is a weaker month for outdoor sightseeing in Indralaya.

What to pack for Indralaya in September

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

In September, Indralaya sees daytime highs around 33°C and nights near 24°C. Pack light clothes. Worth having: rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in Indralaya in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Indralaya peaks around February 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 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 22UV 15Jul 12UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug11Extreme
Sep12Extreme
Oct13Extreme
Nov10Extreme
Dec11Extreme

Air quality in Indralaya 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 Indralaya is worst in October — around 189 µg/m³ PM2.5 (very unhealthy), about 7.3× the cleanest month (February, 26 µg/m³).

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

0306090120150180210JanFebMarAprMayJunJulAugSepOctNovDecModerateModeratePoorUnhealthyVery unhealthyUnhealthyOct 15181 µg/m³Feb 926 µg/m³
PM2.5 (µg/m³)Level
Jan27Moderate
Feb26Moderate
Mar33Moderate
Apr36Poor
May34Moderate
Jun32Moderate
Jul33Moderate
Aug51Poor
Sep138Unhealthy
Oct189Very unhealthy
Nov103Unhealthy
Dec30Moderate
Location & terrain

Where is Indralaya?

Indralaya sits at 3.3°S, 104.7°E, 8 m above sea level, in Indonesia. The nearest listed city is Palembang, 38 km away.

Topography around Indralaya

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

Within 3 km, the terrain around Indralaya has only modest variations in elevation — a maximum elevation change of 29 m around an average of 7 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 37 m; within 80 km, only modest variations in elevation — a maximum elevation change of 101 m.

The land around Indralaya is covered by trees (41%) and cropland (23%) within 3 km, trees (51%) and cropland (24%) within 16 km, and trees (76%) within 80 km.

3 km
29 m
16 km
37 m
80 km
101 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Palembang 38 km · Prabumulih 53 km · Baturaja 113 km · Tanjungagung 123 km · Lahat 139 km · Muntok 142 km · Kotabumi 176 km · Pagar Alam 180 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 Indralaya (-3.2525°, 104.6756°, elevation 8 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).