Kertosono weather in October

In October, Kertosono sees average daytime highs of 33°C and overnight lows near 23°C, with 61 mm of rain across 8.7 wet days and about 12.2 hours of daylight. It is the 1st-warmest and 8th-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 27% of the time in October, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of October to 12 h 18 min by month's end. Set against the rest of the year, October is Kertosono's 6th-clearest and 3rd-windiest month. For the whole year in context, see Kertosono's year-round climate.

Daytime high
33°
1st warmest
Overnight low
23°
6th coldest
Rainfall
61 mm
8.7 wet days
Daylight
12 h 12 min
5:12 AM – 5:22 PM
Cloud cover
62%
6th clearest
Wind
6 km/h
3rd windiest
Solar energy
6.18 kWh/m²
Travel score
3.4
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

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

A typical October day in Kertosono reaches about 33°C in the afternoon and slips back to 23°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 35°C. Set against its neighbours, October runs on par with September and on par with November.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13323
23323
33323
43323
53323
63323
73323
83323
93323
103323
113323
123323
133323
143323
153323
163323
173323
183323
193323
203323
213324
223324
233324
243324
253324
263324
273324
283324
293324
303324
313324

How October really feels in Kertosono

Once humidity and wind are folded in, October averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in October is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Kertosono weather by month

How October compares with the rest of the year at a glance. October is the 1st-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°3792912.42.4
Feb31° / 24°36827.312.22.3
Mar31° / 24°31828.212.12.4
Apr31° / 24°18122.711.82.9
May31° / 23°7812.511.74.1
Jun31° / 23°356.811.64.7
Jul31° / 22°153.311.65.1
Aug32° / 22°51.211.85.0
Sep33° / 22°142.1124.3
Oct33° / 23°618.712.23.4
Nov33° / 24°1681912.32.6
Dec32° / 24°32126.212.42.5

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 19% of October, with mostly cloudy or overcast conditions the remaining 54%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25347
35347
45248
55248
65248
75149
85149
95149
105149
115050
125050
135050
144951
154951
164951
174753
184654
194654
204555
214456
224258
234159
244159
254060
264060
273763
283862
293763
303664
313664

Chance of precipitation in October

Any precipitation

Kertosono gets around 61 mm of rain over 8.7 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 28% and peaks near 44% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
114
214
315
416
516
617
718
819
920
1021
1122
1223
1324
1425
1526
1627
1728
1829
1931
2032
2133
2234
2336
2437
2538
2639
2740
2841
2942
3043
3144

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the oppressive band about 54% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1358372
2258382
3256402
4255412
5254422
6253432
7251452
8250462
9248472
10247492
11246502
12245512
13144532
14143542
15142552
16141562
17140563
18139573
19138583
20137593
21136603
22135613
23134614
24133624
25132634
26131644
27129655
28028675
29027685
30026686
31024706

Wind in October

Winds average 6 km/h in October.

Across October, daily wind ranges from about 5 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
315calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 06 min at the start of October to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over October. Sunrise moves from 5:19 AM to 5:07 AM, and sunset from 5:23 PM to 5:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:195:23
212.15:185:22
312.15:185:22
412.15:175:22
512.15:175:22
612.15:165:22
712.15:165:22
812.15:155:22
912.15:155:22
1012.15:145:22
1112.15:145:22
1212.15:135:22
1312.15:135:22
1412.25:125:22
1512.25:125:22
1612.25:125:22
1712.25:115:22
1812.25:115:22
1912.25:105:22
2012.25:105:22
2112.25:105:22
2212.25:095:22
2312.25:095:22
2412.25:095:22
2512.25:095:22
2612.25:085:22
2712.25:085:23
2812.25:085:23
2912.35:085:23
3012.35:075:23
3112.35:075:23

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 6.18 kWh/m².

For context, solar energy here swings from a low near 4.63 kWh/m² to a high of 6.29 kWh/m² in September across the year — October's 6.18 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.3Intense
96.3Intense
106.3Intense
116.3Intense
126.3Intense
136.2Intense
146.2Intense
156.2Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.0Intense
266.0Intense
276.0Bright
286.0Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in October

Hazard calendar for Kertosono

In seasonPeak

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

Kertosono's monsoon runs December–April, when most of the year's rain falls.

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

Is October a good time to visit Kertosono?

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

3.4
Sightseeing
6th-best month of the year
6.3
Beach & pool
5th-best month of the year

October is a weaker month for outdoor sightseeing in Kertosono. The water and warmth also suit a beach or pool day.

What to pack for Kertosono in October

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

In October, Kertosono sees daytime highs around 33°C and nights near 23°C. Pack light clothes and sun protection. Worth having: rain gear. About 9 days see rain.

light clothessun protectionrain gear

UV index in Kertosono in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October 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 Kertosono peaks around March 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 14 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 highExtremeExtremeMar 18UV 13Jun 14UV 7
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar13Extreme
Apr11Extreme
May9Very high
Jun7High
Jul9Very high
Aug11Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec12Extreme

Air quality in Kertosono in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in Kertosono is worst in May — around 64 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorMay 1764 µg/m³Dec 2343 µg/m³
PM2.5 (µg/m³)Level
Jan44Poor
Feb45Poor
Mar53Poor
Apr59Unhealthy
May64Unhealthy
Jun60Unhealthy
Jul54Poor
Aug48Poor
Sep47Poor
Oct49Poor
Nov48Poor
Dec43Poor
Location & terrain

Where is Kertosono?

Kertosono sits at 7.6°S, 112.1°E, 43 m above sea level, in Indonesia. The nearest listed city is Diwek, 14 km away.

Topography around Kertosono

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

Within 3 km, the terrain around Kertosono has only modest variations in elevation — a maximum elevation change of 13 m around an average of 42 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 248 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,305 m.

The land around Kertosono is covered by cropland (52%), trees (23%) and artificial surfaces (22%) within 3 km, cropland (55%) and trees (28%) within 16 km, and trees (49%) and cropland (37%) within 80 km.

3 km
13 m
16 km
248 m
80 km
3,305 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Diwek 14 km · Jombang 15 km · Ngoro 21 km · Gampengrejo 21 km · Nganjuk 22 km · Pare 23 km · Kediri 28 km · Mojoagung 28 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 Kertosono (-7.5833°, 112.1°, elevation 43 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).