Climate and average weather in Kualakapuas

In Kualakapuas, the weather is muggy, sweltering, wet, and mostly cloudy and remarkably steady, with daytime highs holding near sweltering levels all year. The wettest stretch peaks around December.

Best: early June to late September

Over the course of the year, the temperature in Kualakapuas typically varies from 23°C to 33°C, and is rarely below 22°C or above 36°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 Kualakapuas for warm-weather activities is from early June to late September.

Hottest
Sep
33°
Coldest
Jan
24°
Wettest
Dec
265 mm
Driest
Aug
55 mm
Rain / yr
2036 mm
258 wet days
Daylight
11.8–12.2 h
shortest–longest
Elevation
9 m
3.0°S
Clearest
Aug
67% cloud

Kualakapuas is capital of Kapuas Regency, Central Kalimantan, Indonesia.

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

Kualakapuas 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 Kualakapuas, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

Temperatures in Kualakapuas stay fairly even through the year, without a distinct hot or cool season. The warmest month is September, with an average high of 33°C and low of 24°C; the coolest is January, with an average low of 24°C and high of 31°C.

Days typically run about 7°C warmer than nights year-round.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3124
Feb3124
Mar3124
Apr3225
May3225
Jun3124
Jul3124
Aug3223
Sep3324
Oct3324
Nov3224
Dec3124

How hot and cold Kualakapuas really feels

Feels-like highFeels-like lowactual air temp

The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.

On the hottest afternoons, once humidity is folded in, Kualakapuas feels like about 40°C (around April 30). Nearly every day a year carries some heat stress, and 79 of them tip into dangerous heat (feels-like above 39°C), peaking in April.

20°25°30°35°40°JanFebMarAprMayJunJulAugSepOctNovDecdangerous heat
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan37312424
Feb38312424
Mar39312424
Apr40322525
May40322525
Jun38312424
Jul36312424
Aug36322323
Sep38332424
Oct39332424
Nov39322424
Dec38312424

Average hourly temperature in Kualakapuas

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 33°C, and coldest before dawn in January, near 24°C.

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

Kualakapuas 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
Jan31° / 24°24328.112.22.5
Feb31° / 24°21024.912.12.5
Mar31° / 24°24827.8122.4
Apr32° / 25°21927.311.92.4
May32° / 25°1392211.92.9
Jun31° / 24°10917.611.83.4
Jul31° / 24°8214.211.83.8
Aug32° / 23°559.911.93.8
Sep33° / 24°6810.8123.3
Oct33° / 24°16018.312.12.8
Nov32° / 24°24027.712.12.3
Dec31° / 24°26529.112.22.3

Chance of rain

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

Kualakapuas gets about 2036 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 28 to May 13, peaking in December at about 96% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Aug 12.

December is the wettest month by volume, with 265 mm over about 29 wet days; August is the driest, with 55 mm.

0%10%20%30%40%50%60%70%80%90%100%110%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetDec 24 · 96%Aug 12 · 32%
Rain on a day (%)Rain days
Jan9128
Feb8825
Mar9028
Apr9027
May7122
Jun5818
Jul4614
Aug3310
Sep3711
Oct5918
Nov9028
Dec9529

Monthly rainfall

Over a full year, Kualakapuas collects about 2036 mm of rain across 258 wet days — roughly 170 mm in an average month.

It doesn’t fall evenly. December is the wettest month with 265 mm, while August is the driest at just 55 mm. The three wettest months alone bring about 37% of the year’s total.

050100150200250300JanFebMarAprMayJunJulAugSepOctNovDec243210248219139109825568160240265
Rainfall (mm)Rain days
Jan24328
Feb21025
Mar24828
Apr21927
May13922
Jun10918
Jul8214
Aug5510
Sep6811
Oct16018
Nov24028
Dec26529

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Kualakapuas, 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 August, when the sky is clear, mostly clear, or partly cloudy 40% 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 December, 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 18 · 41%Dec 24 · 1%mostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan298
Feb496
Mar694
Apr991
May2377
Jun3169
Jul3763
Aug4060
Sep3268
Oct1981
Nov595
Dec199

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. Close to the equator, Kualakapuas barely changes through the year: days stay near 12 h 12 min of light in every season.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.25:275:36
Feb12.15:345:40
Mar12.05:315:33
Apr11.95:255:21
May11.95:235:15
Jun11.85:285:18
Jul11.85:335:23
Aug11.95:305:24
Sep12.05:175:16
Oct12.15:055:09
Nov12.15:045:12
Dec12.25:135:24

Sunny days

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

Kualakapuas 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 5 days.

The sunnier stretch runs 5.5 months, from around May 11 to Oct 23. The sunniest month is July, with roughly 5 sunny days (gloomy).

The greyest month is November, down near 0 sunny days — about 95% fewer than the July peak.

0510JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedJul 245 daysNov 180 days
Sunny daysSky
Jan0Gloomy
Feb0Gloomy
Mar0Gloomy
Apr0Gloomy
May3Gloomy
Jun4Gloomy
Jul5Gloomy
Aug5Gloomy
Sep4Gloomy
Oct3Gloomy
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.

Kualakapuas is humid all year round — on a typical day the air feels at least humid, and there is no real dry season to wait for.

The stickiest month is January, when it feels muggy, oppressive or miserable about 100% of the time. Even in January, the mildest month, the air is dry or comfortable only 0% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecmiserableoppressivemuggy
Muggy (%)Oppressive (%)Miserable (%)
Jan03268
Feb02872
Mar01684
Apr0595
May01288
Jun14060
Jul77023
Aug206812
Sep196318
Oct74944
Nov02476
Dec02476

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.

Across the year, average wind speed in Kualakapuas is typically calm, near 6 km/h, and varies little with the seasons.

The windier part of the year lasts 4.2 months, from around Jun 16 to Oct 20. The windiest month is August, averaging about 8 km/h (calm).

The calmer part of the year runs from around Oct 21 to Jun 15, with April the calmest month at about 4 km/h.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmercalmlight breezeAug 15 · 8 km/hApr 18 · 4 km/h
Wind speed (km/h)Feels
Jan5calm
Feb5calm
Mar5calm
Apr4calm
May5calm
Jun6calm
Jul7calm
Aug8calm
Sep7calm
Oct6calm
Nov5calm
Dec5calm

Best time to visit Kualakapuas

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around mid September, Kualakapuas 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 Kualakapuas for general outdoor tourist activities is from early June to late September, with a peak score in the last week of July.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJul 25 · 3.9

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
Jan2.5poor
Feb2.5poor
Mar2.4poor
Apr2.4poor
May2.9poor
Jun3.4poor
Jul3.8fair
Aug3.7fair
Sep3.3poor
Oct2.8poor
Nov2.3poor
Dec2.3poor

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 Kualakapuas for hot-weather activities is from mid June to mid October, with a peak score in the second week of August.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationAug 9 · 6.3

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 Kualakapuas, 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.

Kualakapuas packs about the same all year — highs hold near 33°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, Kualakapuas sees daytime highs around 33°C and nights near 24°C. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.

Sea temperature near Kualakapuas

Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.

The sea at the nearest coast (about 50 km away) is warmest in April 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
Mar30Tropical
Apr30Tropical
May30Tropical
Jun29Tropical
Jul29Tropical
Aug28Tropical
Sep28Tropical
Oct29Tropical
Nov30Tropical
Dec29Tropical

UV index (midday) in Kualakapuas 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 Kualakapuas peaks around February 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 17UV 15Jun 23UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun10Extreme
Jul10Extreme
Aug12Extreme
Sep13Extreme
Oct12Extreme
Nov13Extreme
Dec13Extreme

Average hourly UV index in Kualakapuas

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 February the burn window is concentrated in the middle of the day: about 8 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)
Jan8.56.5
Feb86.5
Mar8.56.5
Apr86
May7.55.5
Jun7.55
Jul7.55.5
Aug86
Sep86
Oct86
Nov86
Dec86

Air quality in Kualakapuas 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 Kualakapuas is worst in September — around 89 µg/m³ PM2.5 (unhealthy), about 4.4× the cleanest month (January, 20 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecModerateUnhealthyModerateSep 2287 µg/m³Jan 1520 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb23Moderate
Mar26Moderate
Apr27Moderate
May28Moderate
Jun28Moderate
Jul28Moderate
Aug39Poor
Sep89Unhealthy
Oct82Unhealthy
Nov44Poor
Dec22Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Kualakapuas 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. Kualakapuas banks about 6,527 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around October.

02,0004,0006,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan544
Feb495
Mar553
Apr541
May563
Jun531
Jul539
Aug553
Sep552
Oct573
Nov539
Dec545

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.

Kualakapuas receives about 4.8 kWh/m² a day of solar energy — bright — and it stays remarkably steady, holding between 4.1 and 5.5 kWh/m² all year. For solar panels, output here is a flat line, not a seasonal wave.

01234567JanFebMarAprMayJunJulAugSepOctNovDecdimmoderatebrightintenseSep 205.5 kWhDec 224.1 kWh
Solar energy (kWh/m²)Level
Jan4.4Bright
Feb4.5Bright
Mar4.7Bright
Apr4.6Bright
May4.7Bright
Jun4.6Bright
Jul4.8Bright
Aug5.3Bright
Sep5.5Bright
Oct5.2Bright
Nov4.5Bright
Dec4.1Bright

Where is Kualakapuas?

Kualakapuas sits at 3.0°S, 114.4°E, 9 m above sea level, in Indonesia. The nearest listed city is Banjarmasin, 41 km away.

Topography around Kualakapuas

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

Within 3 km, the terrain around Kualakapuas has only modest variations in elevation — a maximum elevation change of 15 m around an average of 2 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 19 m; within 80 km, only modest variations in elevation — a maximum elevation change of 186 m.

The land around Kualakapuas is covered by trees (33%) and water (21%) within 3 km, trees (58%) and grassland (20%) within 16 km, and trees (49%) within 80 km.

3 km
15 m
16 km
19 m
80 km
186 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
Nearby: Banjarmasin 41 km · Banjarbaru 69 km · Martapura 69 km · Palangkaraya 103 km · Amuntai 116 km · Barabai 120 km · Tanjung 147 km · Sampit 168 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 Kualakapuas (-3.0091°, 114.3876°, 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. 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).