Pasuruan weather in September

In September, Pasuruan sees average daytime highs of 30°C and overnight lows near 23°C, with 10 mm of rain across 1.8 wet days and about 12 hours of daylight. It is the 3rd-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 48% of the time in September, and the air most often feels muggy.

Daylight stretches from about 11 h 54 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Pasuruan's 2nd-clearest and 1st-windiest month. For the whole year in context, see Pasuruan's year-round climate.

Daytime high
30°
3rd warmest
Overnight low
23°
3rd coldest
Rainfall
10 mm
1.8 wet days
Daylight
12 hours
5:24 AM – 5:21 PM
Cloud cover
46%
2nd clearest
Wind
6 km/h
1st windiest
Solar energy
6.19 kWh/m²
Travel score
6.1
out of 10

Pasuruan is city in East Java Province, Indonesia.

Density
6,049/km²
people per km²
Founded
1686

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 30°C through the month.

A typical September day in Pasuruan reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 31°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13022
23022
33022
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263023
273023
283023
293023
303023

How September really feels in Pasuruan

Once humidity and wind are folded in, September averages 13 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
13
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.

Pasuruan weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°37629.412.42.9
Feb29° / 24°33726.812.32.9
Mar29° / 24°27827.612.13.2
Apr29° / 25°15021.311.83.8
May30° / 24°4310.911.75.2
Jun29° / 23°256.711.65.9
Jul29° / 22°133.411.66.5
Aug29° / 22°41.311.76.7
Sep30° / 23°101.8126.1
Oct31° / 24°347.112.25.0
Nov30° / 25°12818.312.33.7
Dec29° / 25°32128.412.43.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 20% of September, with mostly cloudy or overcast conditions the remaining 32%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17228
27228
37129
47129
57129
67030
77030
87030
97030
107030
117030
127030
137030
146931
156832
166832
176832
186832
196634
206634
216634
226634
236535
246436
256436
266436
276337
286238
296238
306238

Chance of precipitation in September

Any precipitation

Pasuruan gets around 10 mm of rain over 1.8 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 7% and peaks near 11% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
14
24
34
44
54
64
74
85
95
105
115
125
135
146
156
166
176
187
197
207
217
228
238
249
259
2610
2710
2810
2911
3011

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 66% of days. Sticky, muggy-or-worse air turns up on roughly 88% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11146916
21146916
31137016
41137016
51137016
61137016
71137016
81137016
90137116
100137017
110137017
120136918
130136819
140136819
150136720
160126721
170126721
180126622
190126523
200126523
210116524
220116425
230116326
240116326
250116227
260106228
270106228
280106129
29096130
30096031

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 54 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 12 minutes over September. Sunrise moves from 5:33 AM to 5:16 AM, and sunset from 5:24 PM to 5:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:335:24
211.95:325:24
311.95:315:23
411.95:315:23
511.95:305:23
611.95:305:23
711.95:295:23
811.95:295:23
911.95:285:23
1011.95:275:22
1111.95:275:22
1211.95:265:22
1311.95:265:22
1411.95:255:22
1512.05:255:22
1612.05:245:21
1712.05:235:21
1812.05:235:21
1912.05:225:21
2012.05:225:21
2112.05:215:21
2212.05:205:21
2312.05:205:20
2412.05:195:20
2512.05:195:20
2612.05:185:20
2712.05:185:20
2812.05:175:20
2912.15:165:20
3012.15:165:19

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.19 kWh/m².

For context, solar energy here swings from a low near 4.6 kWh/m² to a high of 6.22 kWh/m² in October across the year — September's 6.19 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.0Bright
26.0Bright
36.0Intense
46.0Intense
56.0Intense
66.1Intense
76.1Intense
86.1Intense
96.1Intense
106.1Intense
116.2Intense
126.2Intense
136.2Intense
146.2Intense
156.2Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.3Intense
226.3Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
Planning a trip in September

Hazard calendar for Pasuruan

In seasonPeak

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

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

Pasuruan's monsoon runs December–March, 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 Pasuruan?

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

6.1
Sightseeing
3rd-best month of the year
8.3
Beach & pool
3rd-best month of the year

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

What to pack for Pasuruan in September

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

In September, Pasuruan sees daytime highs around 30°C and nights near 23°C. Pack light clothes and sun protection.

light clothessun protection

Sea temperature near Pasuruan in September

The nearest coast averages about 28°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in November at about 30°C and coldest in August near 28°C.

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

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun29Tropical
Jul28Tropical
Aug28Tropical
Sep28Tropical
Oct29Tropical
Nov30Tropical
Dec30Tropical

UV index in Pasuruan 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 Pasuruan peaks around March 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 16 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 18UV 13Jun 16UV 7
UV index (midday)Level
Jan11Extreme
Feb11Extreme
Mar14Extreme
Apr12Extreme
May9Very high
Jun7High
Jul9Very high
Aug11Extreme
Sep13Extreme
Oct13Extreme
Nov12Extreme
Dec10Extreme

Air quality in Pasuruan 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 Pasuruan is worst in March — around 60 µg/m³ PM2.5 (unhealthy), about 1.7× the cleanest month (August, 36 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyUnhealthyPoorMar 1759 µg/m³Aug 1636 µg/m³
PM2.5 (µg/m³)Level
Jan57Unhealthy
Feb53Poor
Mar60Unhealthy
Apr54Poor
May45Poor
Jun43Poor
Jul39Poor
Aug36Poor
Sep39Poor
Oct48Poor
Nov52Poor
Dec56Unhealthy
Location & terrain

Where is Pasuruan?

Pasuruan sits at 7.6°S, 112.9°E, 9 m above sea level, in Indonesia. The nearest listed city is Bangil, 11 km away.

Topography around Pasuruan

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

Within 3 km, the terrain around Pasuruan has only modest variations in elevation — a maximum elevation change of 18 m around an average of 6 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 319 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,635 m.

The land around Pasuruan is covered by artificial surfaces (42%) and water (20%) within 3 km, water (38%), cropland (22%) and trees (20%) within 16 km, and trees (44%) and water (27%) within 80 km.

3 km
18 m
16 km
319 m
80 km
3,635 m
treesgrasslandcroplandartificial surfaceswaterwetlandmangroves
September weather nearby: Bangil 11 km · Pandaan 24 km · Tanggulangin 28 km · Sidoarjo 30 km · Buduran 32 km · Lawang 32 km · Prigen 32 km · Tulangan Utara 34 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 Pasuruan (-7.6453°, 112.9075°, elevation 9 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).