Climate and average weather in Cileunyi

In Cileunyi, the weather is warm, wet, and partly cloudy and remarkably steady, with daytime highs holding near warm levels all year. The wettest stretch peaks around December.

Best: early June to late September

Over the course of the year, the temperature in Cileunyi typically varies from 17°C to 27°C, and is rarely below 15°C or above 28°C. September is the hottest month of the year, while January is the coldest.

Based on the travel score, the best time of year to visit Cileunyi for warm-weather activities is from early June to late September.

Hottest
Sep
27°
Coldest
Jan
19°
Wettest
Dec
451 mm
Driest
Aug
63 mm
Rain / yr
3221 mm
262 wet days
Daylight
11.6–12.4 h
shortest–longest
Elevation
703 m
6.9°S
Clearest
Aug
63% cloud

Cileunyi is place in West Java, Indonesia.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Cileunyi weather by month, at a glance

The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.

Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around early June to late September.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Cileunyi, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

Temperatures in Cileunyi stay fairly even through the year, without a distinct hot or cool season. The warmest month is September, with an average high of 27°C and low of 18°C; the coolest is January, with an average low of 19°C and high of 25°C.

Days typically run about 8°C warmer than nights year-round.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2519
Feb2519
Mar2619
Apr2619
May2619
Jun2618
Jul2617
Aug2617
Sep2718
Oct2618
Nov2619
Dec2519

Average hourly temperature in Cileunyi

A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on September afternoons, near 27°C, and coldest before dawn in January, near 19°C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Cileunyi weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 19°44729.712.43.6
Feb25° / 19°43027.412.23.5
Mar26° / 19°44730.1123.5
Apr26° / 19°31127.611.93.7
May26° / 19°15720.811.74.9
Jun26° / 18°10315.311.65.8
Jul26° / 17°7612.111.66.3
Aug26° / 17°6310.211.86.5
Sep27° / 18°10013125.9
Oct26° / 18°23120.112.24.9
Nov26° / 19°40526.612.33.8
Dec25° / 19°4512912.43.6

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Cileunyi gets about 3221 mm of precipitation a year. On a typical day the chance of rain is very wet, but that rises and falls sharply with the seasons.

The wetter season lasts 6.5 months, from around Oct 27 to May 11, peaking in January at about 99% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Aug 8.

December is the wettest month by volume, with 451 mm over about 29 wet days; August is the driest, with 63 mm.

0%10%20%30%40%50%60%70%80%90%100%110%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetJan 31 · 99%Aug 8 · 29%
Rain on a day (%)Rain days
Jan9630
Feb9827
Mar9730
Apr9228
May6821
Jun5015
Jul3912
Aug3310
Sep4413
Oct6520
Nov8827
Dec9429

Monthly rainfall

Over a full year, Cileunyi collects about 3221 mm of rain across 262 wet days — roughly 268 mm in an average month.

It doesn’t fall evenly. December is the wettest month with 451 mm, while August is the driest at just 63 mm. The three wettest months alone bring about 42% of the year’s total.

050100150200250300350400450500JanFebMarAprMayJunJulAugSepOctNovDec4474304473111571037663100231405451
Rainfall (mm)Rain days
Jan44730
Feb43027
Mar44730
Apr31128
May15721
Jun10315
Jul7612
Aug6310
Sep10013
Oct23120
Nov40527
Dec45129

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Cileunyi, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.

The clearer part of the year begins around May 8 and lasts for 5.5 months, ending around October 20. The clearest month is July, when the sky is clear, mostly clear, or partly cloudy 43% of the time on average.

The cloudier part of the year begins around October 21 and lasts for 6.5 months, ending around May 7. The cloudiest month is February, when it is overcast or mostly cloudy 99% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecAug 3 · 48%Feb 13 · 0%mostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan496
Feb199
Mar496
Apr991
May2872
Jun4357
Jul4357
Aug4357
Sep3466
Oct2278
Nov991
Dec496

Daylight, sunrise and sunset

DaylightNight

Hours of daylight through the year, with sunrise and sunset times.

The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around January 1, brings about 12 h 24 min of light; the shortest, around May 25, only 11 h 36 min — a swing of roughly 0 h 48 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.45:476:09
Feb12.25:576:10
Mar12.05:576:00
Apr11.95:545:45
May11.75:555:36
Jun11.66:015:37
Jul11.66:065:44
Aug11.86:005:46
Sep12.05:445:42
Oct12.25:295:39
Nov12.35:255:44
Dec12.45:335:57

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Cileunyi averages about 2 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 7 days.

The sunnier stretch runs 5.1 months, from around May 13 to Oct 15. The sunniest month is July, with roughly 6 sunny days (gloomy).

The greyest month is January, down near 0 sunny days — about 96% fewer than the July peak.

0510JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedJul 317 daysJan 280 days
Sunny daysSky
Jan0Gloomy
Feb0Gloomy
Mar0Gloomy
Apr0Gloomy
May3Gloomy
Jun6Gloomy
Jul6Gloomy
Aug6Gloomy
Sep4Gloomy
Oct2Gloomy
Nov0Gloomy
Dec0Gloomy

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.

Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.

In Cileunyi, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 7.9 months, from around October 23 to June 18. The muggiest month is January, when the air feels humid, muggy or worse about 100% of the time.

The most comfortable stretch runs from around June 19 to October 22, and August is the most comfortable month — the air is dry or comfortable 34% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecAug 7 · 36%Jan 1 · 0%humidmuggycomfortablehumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)
Jan001585
Feb001486
Mar001090
Apr00793
May012078
Jun184150
Jul3235123
Aug3305412
Sep3235518
Oct1124344
Nov012277
Dec001486

Wind

Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.

This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.

Wind in Cileunyi is steady company: average speeds sit near 4 km/hcalm — in every month of the year, with no meaningful windy or calm season.

0510JanFebMarAprMayJunJulAugSepOctNovDeccalmJan 31 · 4 km/hApr 13 · 3 km/h
Wind speed (km/h)Feels
Jan4calm
Feb4calm
Mar3calm
Apr3calm
May3calm
Jun3calm
Jul4calm
Aug4calm
Sep4calm
Oct4calm
Nov3calm
Dec3calm

Hazard calendar for Cileunyi

In seasonPeak

When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.

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

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

Best time to visit Cileunyi

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Cileunyi throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around late September, Cileunyi is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.

Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.

The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Cileunyi for general outdoor tourist activities is from early June to late September, with a peak score in the first week of August.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationAug 6 · 6.7

The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Travel score (0–10)Rating
Jan3.5fair
Feb3.5poor
Mar3.5poor
Apr3.7fair
May4.8fair
Jun5.8good
Jul6.3good
Aug6.5good
Sep5.9good
Oct4.9fair
Nov3.8fair
Dec3.6fair

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Cileunyi for hot-weather activities is from early June to early October, with a peak score in the second week of August.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationAug 8 · 6.5

The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

What to pack for Cileunyi, by month

EssentialRecommendedOptional

Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.

Cileunyi packs about the same all year — highs hold near 27°C. Across the year the things worth having are light clothes, rain gear and sun protection.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In September, Cileunyi sees daytime highs around 27°C and nights near 18°C. Worth packing: light clothes, rain gear and sun protection. About 13 days see rain.

UV index (midday) in Cileunyi by month

LowModerateHighVery highExtreme

Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.

Under clear skies, the midday UV index in Cileunyi peaks around March 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 16 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeVery highExtremeMar 16UV 15Nov 16UV 8
UV index (midday)Level
Jan12Extreme
Feb11Extreme
Mar15Extreme
Apr10Extreme
May9Very high
Jun8Very high
Jul9Very high
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov7Very high
Dec12Extreme

Average hourly UV index in Cileunyi

LowModerateHighVery highExtreme

Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.

The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

UV falls off far faster than brightness as the sun drops, so even in March the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 6.5 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan86
Feb86
Mar8.56.5
Apr7.55
May74.5
Jun6.53.5
Jul74.5
Aug7.55
Sep86
Oct85.5
Nov73.5
Dec86

Air quality in Cileunyi by month

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.

Air quality in Cileunyi is worst in May — around 72 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyMay 1672 µg/m³Sep 1253 µg/m³
PM2.5 (µg/m³)Level
Jan61Unhealthy
Feb60Unhealthy
Mar69Unhealthy
Apr69Unhealthy
May72Unhealthy
Jun69Unhealthy
Jul60Unhealthy
Aug54Poor
Sep53Poor
Oct55Unhealthy
Nov57Unhealthy
Dec60Unhealthy
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Cileunyi is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecfrost-free year round
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May1000
Jun1000
Jul1000
Aug1000
Sep1000
Oct1000
Nov1000
Dec1000

Growing degree days

Degree days (base 10°C)Frost-free shaded

Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Cileunyi banks about 4,403 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around May.

01,0002,0003,0004,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan365
Feb329
Mar376
Apr373
May386
Jun361
Jul359
Aug362
Sep362
Oct382
Nov370
Dec377

Solar energy

Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.

Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.

Cileunyi receives about 4.8 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.1 and 5.8 kWh/m².

The brighter stretch of the year lasts 4.3 months, from around Jun 30 to Nov 7. The brightest month is September, averaging about 5.7 kWh/m² (bright).

The dimmest month is January, down near 4.2 kWh/m² — roughly 27% less than the September peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmerdimmoderatebrightintenseSep 155.8 kWhJan 304.1 kWh
Solar energy (kWh/m²)Level
Jan4.2Bright
Feb4.2Bright
Mar4.5Bright
Apr4.5Bright
May4.7Bright
Jun4.6Bright
Jul4.9Bright
Aug5.5Bright
Sep5.8Bright
Oct5.4Bright
Nov4.6Bright
Dec4.2Bright

Where is Cileunyi?

Cileunyi sits at 6.9°S, 107.8°E, 703 m above sea level, in Indonesia. The nearest listed city is Paseh, 15 km away.

Topography around Cileunyi

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

Within 3 km, the terrain around Cileunyi has only modest variations in elevation — a maximum elevation change of 235 m around an average of 719 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,655 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,025 m.

The land around Cileunyi is covered by artificial surfaces (53%) and trees (21%) within 3 km, trees (45%), artificial surfaces (28%) and cropland (23%) within 16 km, and trees (65%) and cropland (23%) within 80 km.

3 km
235 m
16 km
1,655 m
80 km
3,025 m
treesgrasslandcroplandartificial surfacesbare terrainwater
Nearby: Paseh 15 km · Bandung 16 km · Pameungpeuk 19 km · Sumedang 20 km · Lembang 21 km · Sumedang Utara 21 km · Margahayukencana 21 km · Banjaran 22 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 Cileunyi (-6.9389°, 107.7528°, elevation 703 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).