Mojokerto weather in September

In September, Mojokerto sees average daytime highs of 32°C and overnight lows near 21°C, with 31 mm of rain across 4.7 wet days and about 12 hours of daylight. It is the 2nd-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 31% 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 Mojokerto's 2nd-clearest and 3rd-windiest month. For the whole year in context, see Mojokerto's year-round climate.

Daytime high
32°
2nd warmest
Overnight low
21°
3rd coldest
Rainfall
31 mm
4.7 wet days
Daylight
12 hours
5:26 AM – 5:23 PM
Cloud cover
55%
2nd clearest
Wind
5 km/h
3rd windiest
Solar energy
6.43 kWh/m²
Travel score
4.5
out of 10

Mojokerto is city in East Java Province, Indonesia.

Density
8,562/km²
people per km²
Founded
1918

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 32°C through the month.

A typical September day in Mojokerto reaches about 32°C in the afternoon and slips back to 21°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 33°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13121
23221
33221
43221
53221
63221
73221
83221
93221
103221
113221
123221
133221
143221
153221
163221
173221
183221
193221
203221
213221
223221
233221
243221
253222
263222
273222
283222
293222
303222

How September really feels in Mojokerto

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.

Mojokerto weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°51729.612.42.7
Feb30° / 23°50227.412.22.6
Mar30° / 23°46329.312.12.7
Apr30° / 23°27924.411.83.1
May31° / 22°10915.411.74.1
Jun30° / 21°569.711.64.9
Jul30° / 21°295.711.65.3
Aug31° / 21°143.611.85.2
Sep32° / 21°314.7124.5
Oct32° / 22°11012.312.23.6
Nov32° / 23°28322.212.32.9
Dec30° / 23°44728.512.42.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 24% of September, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15743
25743
35743
45743
55743
65644
75644
85644
95644
105644
115644
125545
135545
145644
155545
165446
175446
185446
195446
205347
215347
225347
235248
245248
255149
265149
275050
285050
294852
304852

Chance of precipitation in September

Any precipitation

Mojokerto gets around 31 mm of rain over 4.7 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 16% and peaks near 25% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
114
214
314
414
514
613
713
813
913
1013
1113
1213
1314
1414
1514
1615
1715
1816
1916
2017
2117
2218
2319
2420
2520
2621
2722
2823
2924
3025

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 49% of days. Sticky, muggy-or-worse air turns up on roughly 62% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
13335212
24335112
34335112
44335112
55335012
65345012
75344911
85354911
95354911
105354911
115364811
125364811
135364811
145364811
155364811
165354811
175354812
185354812
195344813
204344814
214334814
224334815
234324816
244324816
253324817
263314818
273304719
283304720
293294721
303284721

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 5 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
265calm
275calm
285calm
295calm
305calm

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 5:34 AM to 5:18 AM, and sunset from 5:26 PM to 5:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:345:26
211.95:345:26
311.95:335:25
411.95:335:25
511.95:325:25
611.95:325:25
711.95:315:25
811.95:305:25
911.95:305:24
1011.95:295:24
1111.95:295:24
1211.95:285:24
1311.95:285:24
1411.95:275:24
1512.05:265:24
1612.05:265:23
1712.05:255:23
1812.05:255:23
1912.05:245:23
2012.05:235:23
2112.05:235:23
2212.05:225:22
2312.05:225:22
2412.05:215:22
2512.05:215:22
2612.05:205:22
2712.05:195:22
2812.05:195:22
2912.15:185:21
3012.15:185:21

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.43 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.65 kWh/m² to a high of 6.43 kWh/m² in September across the year — September's 6.43 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.3Intense
96.4Intense
106.4Intense
116.4Intense
126.4Intense
136.4Intense
146.4Intense
156.5Intense
166.5Intense
176.5Intense
186.5Intense
196.5Intense
206.5Intense
216.5Intense
226.5Intense
236.5Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
Planning a trip in September

Hazard calendar for Mojokerto

In seasonPeak

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

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

Mojokerto'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 Mojokerto?

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

4.5
Sightseeing
4th-best month of the year
7.2
Beach & pool
3rd-best month of the year

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

What to pack for Mojokerto in September

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

In September, Mojokerto sees daytime highs around 32°C and nights near 21°C. Pack light clothes and sun protection. About 5 days see rain.

light clothessun protection

Sea temperature near Mojokerto 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 at the nearest coast (about 50 km away) 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 Mojokerto 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 Mojokerto peaks around March 18 at about 13 (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 18UV 13Jun 15UV 7
UV index (midday)Level
Jan12Extreme
Feb10Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun7High
Jul9Very high
Aug11Extreme
Sep12Extreme
Oct11Extreme
Nov10Very high
Dec11Extreme

Air quality in Mojokerto 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 Mojokerto is worst in May — around 101 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyMay 13101 µg/m³Aug 2267 µg/m³
PM2.5 (µg/m³)Level
Jan76Unhealthy
Feb71Unhealthy
Mar87Unhealthy
Apr99Unhealthy
May101Unhealthy
Jun95Unhealthy
Jul81Unhealthy
Aug66Unhealthy
Sep69Unhealthy
Oct80Unhealthy
Nov87Unhealthy
Dec81Unhealthy
Location & terrain

Where is Mojokerto?

Mojokerto sits at 7.5°S, 112.4°E, 25 m above sea level, in Indonesia. The nearest listed city is Soko, 2.0 km away.

Topography around Mojokerto

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

Within 3 km, the terrain around Mojokerto has only modest variations in elevation — a maximum elevation change of 13 m around an average of 23 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 173 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,306 m.

The land around Mojokerto is covered by artificial surfaces (50%), cropland (24%) and trees (21%) within 3 km, cropland (51%), trees (26%) and artificial surfaces (20%) within 16 km, and trees (38%) and cropland (30%) within 80 km.

3 km
13 m
16 km
173 m
80 km
3,306 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Soko 2.0 km · Mojoagung 14 km · Krian 17 km · Driyorejo 24 km · Jombang 24 km · Tulangan Utara 24 km · Diwek 26 km · Tanggulangin 30 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 Mojokerto (-7.4664°, 112.4338°, elevation 25 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).