Sawangan weather in September

In September, Sawangan sees average daytime highs of 31°C and overnight lows near 22°C, with 126 mm of rain across 17.1 wet days and about 12 hours of daylight. It is the 1st-warmest and 9th-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 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 Sawangan's 4th-clearest and 5th-windiest month. For the whole year in context, see Sawangan's year-round climate.

Daytime high
31°
1st warmest
Overnight low
22°
3rd coldest
Rainfall
126 mm
17.1 wet days
Daylight
12 hours
5:48 AM – 5:46 PM
Cloud cover
68%
4th clearest
Wind
5 km/h
5th windiest
Solar energy
5.84 kWh/m²
Travel score
3.7
out of 10

Sawangan is subdistrict in Depok City, 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 31°C through the month.

A typical September day in Sawangan reaches about 31°C in the afternoon and slips back to 22°C overnight — a 9°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 on par with August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13121
23121
33121
43121
53121
63121
73121
83121
93121
103121
113122
123122
133122
143122
153122
163122
173122
183122
193122
203122
213122
223122
233122
243122
253122
263122
273122
283122
293122
303122

How September really feels in Sawangan

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.

Sawangan weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 22°32429.312.33.0
Feb29° / 22°3182712.22.9
Mar30° / 22°32129.6122.8
Apr30° / 22°27827.611.92.8
May30° / 22°16424.511.73.2
Jun30° / 22°1181911.63.8
Jul30° / 21°9617.111.74.1
Aug31° / 21°9115.511.84.1
Sep31° / 22°12617.1123.7
Oct31° / 22°24623.712.13.1
Nov30° / 22°34227.612.32.7
Dec29° / 22°33327.712.43.0

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 25% of September, with mostly cloudy or overcast conditions the remaining 64%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13862
23862
33961
43961
53961
63961
73961
83961
93862
103961
113862
123763
133763
143763
153763
163664
173664
183565
193565
203466
213466
223466
233466
243466
253466
263466
273466
283466
293367
303367

Chance of precipitation in September

Any precipitation

Sawangan gets around 126 mm of rain over 17.1 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 58% and peaks near 66% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
158
258
358
457
557
656
755
855
954
1054
1154
1254
1354
1454
1554
1654
1755
1855
1956
2057
2158
2259
2360
2461
2562
2662
2763
2864
2965
3066

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 52% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
124652
224652
324751
424751
524751
634850
734849
834948
934948
1034948
1134947
1235047
1335047
1435047
1534948
1634948
1734948
1834849
1934750
2034750
2124652
2224553
2324454
2424355
2524157
2624058
2713960
2813861
2913762
3013564

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
264calm
274calm
284calm
294calm
304calm

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 5:56 AM to 5:41 AM, and sunset from 5:49 PM to 5:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:565:49
211.95:565:49
311.95:555:49
411.95:555:48
511.95:545:48
611.95:545:48
711.95:535:48
811.95:535:48
911.95:525:48
1011.95:525:47
1111.95:515:47
1211.95:505:47
1311.95:505:47
1412.05:495:47
1512.05:495:46
1612.05:485:46
1712.05:485:46
1812.05:475:46
1912.05:475:46
2012.05:465:45
2112.05:465:45
2212.05:455:45
2312.05:445:45
2412.05:445:45
2512.05:435:45
2612.05:435:44
2712.05:425:44
2812.05:425:44
2912.05:415:44
3012.05:415:44

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.84 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.31 kWh/m² to a high of 5.84 kWh/m² in September across the year — September's 5.84 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
Planning a trip in September

Hazard calendar for Sawangan

In seasonPeak

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

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

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

Is September a good time to visit Sawangan?

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

3.7
Sightseeing
4th-best month of the year
5.3
Beach & pool
3rd-best month of the year

September is a weaker month for outdoor sightseeing in Sawangan.

What to pack for Sawangan in September

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

In September, Sawangan sees daytime highs around 31°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

Sea temperature near Sawangan in September

The nearest coast averages about 29°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 60 km away) is warmest in May at about 30°C and coldest in January near 29°C.

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

28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov30Tropical
Dec29Tropical

UV index in Sawangan in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sawangan peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 14 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 16UV 15Nov 14UV 6
UV index (midday)Level
Jan12Extreme
Feb12Extreme
Mar16Extreme
Apr10Extreme
May9Very high
Jun7Very high
Jul8Very high
Aug9Very high
Sep10Very high
Oct9Very high
Nov6High
Dec11Extreme

Air quality in Sawangan 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 Sawangan is worst in May — around 104 µg/m³ PM2.5 (unhealthy), about 1.9× the cleanest month (January, 54 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyMay 23104 µg/m³Jan 1054 µg/m³
PM2.5 (µg/m³)Level
Jan54Poor
Feb60Unhealthy
Mar69Unhealthy
Apr83Unhealthy
May104Unhealthy
Jun102Unhealthy
Jul100Unhealthy
Aug87Unhealthy
Sep77Unhealthy
Oct73Unhealthy
Nov69Unhealthy
Dec54Poor
Location & terrain

Where is Sawangan?

Sawangan sits at 6.4°S, 106.8°E, 88 m above sea level, in Indonesia. The nearest listed city is Depok, 5.0 km away.

Topography around Sawangan

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

Within 3 km, the terrain around Sawangan has only modest variations in elevation — a maximum elevation change of 46 m around an average of 88 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 245 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,001 m.

The land around Sawangan is covered by artificial surfaces (64%) and trees (33%) within 3 km, artificial surfaces (57%) and trees (38%) within 16 km, and trees (49%) and water (21%) within 80 km.

3 km
46 m
16 km
245 m
80 km
3,001 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Depok 5.0 km · Parung 5.0 km · Pamulang 8.0 km · Cibinong 12 km · South Tangerang 14 km · Citeureup 15 km · Serpong 15 km · Ciampea 19 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 Sawangan (-6.4028°, 106.7744°, elevation 88 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).