Yogyakarta weather in September

In September, Yogyakarta sees average daytime highs of 28°C and overnight lows near 21°C, with 66 mm of rain across 10.2 wet days and about 12 hours of daylight. It is the 10th-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 16% of the time in September, and the air most often feels oppressive.

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 Yogyakarta's 4th-clearest and 1st-windiest month. For the whole year in context, see Yogyakarta's year-round climate.

Daytime high
28°
10th warmest
Overnight low
21°
3rd coldest
Rainfall
66 mm
10.2 wet days
Daylight
12 hours
5:34 AM – 5:32 PM
Cloud cover
64%
4th clearest
Wind
7 km/h
1st windiest
Solar energy
5.92 kWh/m²
Travel score
5.6
out of 10

Yogyakarta is city in Yogyakarta Province, Indonesia.

Density
11,560/km²
people per km²
Founded
1756

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 Yogyakarta reaches about 28°C in the afternoon and slips back to 21°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°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)
12821
22821
32821
42821
52821
62821
72821
82821
92821
102821
112821
122821
132821
142821
152821
162821
172921
182921
192921
202921
212921
222922
232922
242922
252922
262922
272922
282922
292922
302922

How September really feels in Yogyakarta

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.

Yogyakarta weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 23°33628.912.42.9
Feb29° / 23°30226.512.32.8
Mar30° / 23°33528.612.12.8
Apr30° / 23°2912711.82.9
May30° / 23°15020.211.63.9
Jun29° / 22°10915.211.64.8
Jul28° / 21°599.911.66.0
Aug28° / 21°40711.76.7
Sep28° / 21°6610.2125.6
Oct29° / 22°18820.312.24.1
Nov29° / 23°35227.512.43.0
Dec29° / 23°37728.212.43.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 30% of September, with mostly cloudy or overcast conditions the remaining 54%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15149
25248
35248
45248
55347
65347
75347
85248
95248
105248
115050
124951
134951
144852
154852
164753
174555
184555
194357
204258
214258
224060
234060
243961
253862
263862
273763
283763
293565
303565

Chance of precipitation in September

Any precipitation

Yogyakarta gets around 66 mm of rain over 10.2 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 35% and peaks near 49% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
127
227
327
427
527
627
727
828
928
1029
1129
1230
1331
1432
1533
1634
1735
1837
1938
2039
2140
2241
2342
2443
2544
2645
2746
2847
2948
3049

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 60% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1446500
2445510
3444520
4444520
5443530
6343540
7343540
8342550
9342550
10341560
11241570
12240571
13239581
14239581
15238591
16238591
17137611
18137611
19136621
20136621
21135631
22135631
23134641
24134641
25133651
26033661
27032671
28031690
29030700
30029710

Wind in September

Winds average 7 km/h in September, the windiest month of the year.

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

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 5:43 AM to 5:26 AM, and sunset from 5:34 PM to 5:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:435:34
211.95:425:34
311.95:425:33
411.95:415:33
511.95:415:33
611.95:405:33
711.95:395:33
811.95:395:33
911.95:385:33
1011.95:385:33
1111.95:375:32
1211.95:375:32
1311.95:365:32
1411.95:355:32
1512.05:355:32
1612.05:345:32
1712.05:345:31
1812.05:335:31
1912.05:325:31
2012.05:325:31
2112.05:315:31
2212.05:315:31
2312.05:305:31
2412.05:295:30
2512.05:295:30
2612.05:285:30
2712.05:285:30
2812.05:275:30
2912.15:275:30
3012.15:265:30

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.92 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.66 kWh/m² to a high of 5.92 kWh/m² in September across the year — September's 5.92 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.9Bright
85.9Bright
95.9Bright
105.9Bright
115.9Bright
125.9Bright
135.9Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
Planning a trip in September

Hazard calendar for Yogyakarta

In seasonPeak

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

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

Yogyakarta's rainy season runs October–April, when most of the year's rain falls.

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

Is September a good time to visit Yogyakarta?

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

5.6
Sightseeing
3rd-best month of the year
6.7
Beach & pool
3rd-best month of the year

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

What to pack for Yogyakarta in September

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

In September, Yogyakarta sees daytime highs around 28°C and nights near 21°C. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

Sea temperature near Yogyakarta 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
May29Tropical
Jun28Warm
Jul26Warm
Aug25Warm
Sep25Warm
Oct26Warm
Nov28Warm
Dec29Tropical

UV index in Yogyakarta 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 Yogyakarta peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 15 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highVery highExtremeExtremeMar 14UV 15Jun 15UV 7
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar15Extreme
Apr13Extreme
May9Very high
Jun6High
Jul10Very high
Aug11Extreme
Sep13Extreme
Oct13Extreme
Nov10Very high
Dec12Extreme

Air quality in Yogyakarta 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 Yogyakarta is worst in April — around 58 µg/m³ PM2.5 (unhealthy), about 1.7× the cleanest month (September, 34 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorModeratePoorApr 2158 µg/m³Sep 1134 µg/m³
PM2.5 (µg/m³)Level
Jan48Poor
Feb46Poor
Mar54Poor
Apr58Unhealthy
May57Unhealthy
Jun51Poor
Jul42Poor
Aug35Moderate
Sep34Moderate
Oct37Poor
Nov42Poor
Dec42Poor
Location & terrain

Where is Yogyakarta?

Yogyakarta sits at 7.8°S, 110.4°E, 110 m above sea level, in Indonesia. The nearest listed city is Gamping Lor, 4.0 km away.

Topography around Yogyakarta

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

Within 3 km, the terrain around Yogyakarta has only modest variations in elevation — a maximum elevation change of 56 m around an average of 104 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 501 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,290 m.

The land around Yogyakarta is covered by artificial surfaces (91%) within 3 km, trees (49%), artificial surfaces (29%) and cropland (21%) within 16 km, and trees (55%) and water (25%) within 80 km.

3 km
56 m
16 km
501 m
80 km
3,290 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Gamping Lor 4.0 km · Kasihan 5.0 km · Melati 8.0 km · Sewon 8.0 km · Depok 9.0 km · Godean 9.0 km · Sleman 10 km · Bantul 10 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 Yogyakarta (-7.8014°, 110.3647°, elevation 110 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).