Mertoyudan weather in October

In October, Mertoyudan sees average daytime highs of 28°C and overnight lows near 20°C, with 221 mm of rain across 22.9 wet days and about 12.2 hours of daylight. It is the 6th-warmest and 7th-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 6% of the time in October, and the air most often feels muggy.

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 Mertoyudan's 6th-clearest and 3rd-windiest month. For the whole year in context, see Mertoyudan's year-round climate.

Daytime high
28°
6th warmest
Overnight low
20°
5th coldest
Rainfall
221 mm
22.9 wet days
Daylight
12 h 12 min
5:19 AM – 5:29 PM
Cloud cover
78%
6th clearest
Wind
5 km/h
3rd windiest
Solar energy
5.59 kWh/m²
Travel score
4.4
out of 10

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical October day in Mertoyudan reaches about 28°C in the afternoon and slips back to 20°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 29°C. Set against its neighbours, October runs on par with September and on par with November.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12719
22719
32719
42720
52720
62720
72720
82720
92720
102720
112820
122820
132820
142820
152820
162820
172820
182820
192820
202820
212820
222820
232820
242820
252820
262820
272820
282820
292820
302820
312820

Mertoyudan weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 20°42128.712.43.4
Feb28° / 20°41227.112.23.3
Mar28° / 20°39028.812.13.3
Apr28° / 21°31226.311.83.4
May28° / 20°16520.811.74.4
Jun27° / 20°11816.211.65.3
Jul27° / 19°8513.611.65.9
Aug27° / 18°661211.86.1
Sep27° / 19°10216125.4
Oct28° / 20°22122.912.24.4
Nov28° / 20°37727.812.33.5
Dec28° / 20°39428.112.43.5

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 14% of October, with mostly cloudy or overcast conditions the remaining 81%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12080
22080
32080
42179
52278
62278
72377
82377
92278
102377
112377
122377
132377
142377
152377
162377
172179
182080
192080
201882
211882
221783
231684
241684
251585
261486
271486
281486
291387
301288
311288

Chance of precipitation in October

Any precipitation

Mertoyudan gets around 221 mm of rain over 22.9 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 74% and peaks near 86% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
163
264
365
465
566
667
767
868
969
1069
1170
1270
1371
1471
1572
1672
1773
1874
1975
2076
2177
2278
2379
2480
2581
2682
2783
2884
2985
3086
3186

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the muggy band about 69% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
167915
267915
367915
467816
557916
657817
757718
857619
957619
1057520
1147521
1247422
1347323
1447224
1547125
1637126
1737027
1836829
1926830
2026632
2126533
2226434
2316435
2416336
2516237
2616138
2716039
2815841
2915742
3015643
3115544

Wind in October

Winds average 5 km/h in October.

Across October, 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.

0246810151015202531
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
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

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 5:26 AM to 5:15 AM, and sunset from 5:30 PM to 5:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:265:30
212.15:265:30
312.15:255:30
412.15:255:30
512.15:245:30
612.15:245:30
712.15:235:29
812.15:235:29
912.15:225:29
1012.15:225:29
1112.15:215:29
1212.15:215:29
1312.15:205:29
1412.25:205:29
1512.25:195:29
1612.25:195:29
1712.25:195:29
1812.25:185:29
1912.25:185:29
2012.25:185:29
2112.25:175:29
2212.25:175:29
2312.25:175:30
2412.25:165:30
2512.25:165:30
2612.25:165:30
2712.25:165:30
2812.25:155:30
2912.35:155:30
3012.35:155:30
3112.35:155:31

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.59 kWh/m².

For context, solar energy here swings from a low near 4.38 kWh/m² to a high of 5.74 kWh/m² in September across the year — October's 5.59 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.6Bright
165.6Bright
175.6Bright
185.6Bright
195.6Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.4Bright
265.4Bright
275.4Bright
285.3Bright
295.3Bright
305.3Bright
315.2Bright
Planning a trip in October

Hazard calendar for Mertoyudan

In seasonPeak

In October, Mertoyudan sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

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

Mertoyudan'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 October a good time to visit Mertoyudan?

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

4.4
Sightseeing
5th-best month of the year
4.6
Beach & pool
6th-best month of the year

October is a reasonable time to visit Mertoyudan for sightseeing.

What to pack for Mertoyudan in October

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

In October, Mertoyudan sees daytime highs around 28°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.

light clothesrain gearsun protection

Sea temperature near Mertoyudan in October

The nearest coast averages about 26°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 41 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 Mertoyudan in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October 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 Mertoyudan peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 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 highVery highExtremeExtremeMar 14UV 15Jun 14UV 6
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar15Extreme
Apr12Extreme
May8Very high
Jun6High
Jul10Very high
Aug11Extreme
Sep13Extreme
Oct13Extreme
Nov9Very high
Dec11Extreme

Air quality in Mertoyudan 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 Mertoyudan 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 Mertoyudan?

Mertoyudan sits at 7.5°S, 110.2°E, 351 m above sea level, in Indonesia. The nearest listed city is Magelang, 6.0 km away.

Topography around Mertoyudan

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

Within 3 km, the terrain around Mertoyudan has only modest variations in elevation — a maximum elevation change of 229 m around an average of 331 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,078 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,291 m.

The land around Mertoyudan is covered by trees (51%) and artificial surfaces (27%) within 3 km, trees (73%) within 16 km, and trees (58%) within 80 km.

3 km
229 m
16 km
1,078 m
80 km
3,291 m
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Magelang 6.0 km · Muntilan 10 km · Sleman 26 km · Melati 28 km · Godean 29 km · Gamping Lor 33 km · Ambarawa 34 km · Yogyakarta 35 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 Mertoyudan (-7.52°, 110.2264°, elevation 351 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).