Bontang weather in June

In June, Bontang sees average daytime highs of 29°C and overnight lows near 25°C, with 177 mm of rain across 24.8 wet days and about 12 hours of daylight. It is the 9th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 11% of the time in June, and the air most often feels miserable.

Daylight stretches from about 12 hours at the start of June to 12 hours by month's end. Set against the rest of the year, June is Bontang's 4th-clearest and 8th-windiest month. For the whole year in context, see Bontang's year-round climate.

Daytime high
29°
9th warmest
Overnight low
25°
10th coldest
Rainfall
177 mm
24.8 wet days
Daylight
12 hours
6:10 AM – 6:11 PM
Cloud cover
75%
4th clearest
Wind
8 km/h
8th windiest
Solar energy
4.5 kWh/m²
Travel score
3.5
out of 10

Bontang is city in East Kalimantan Province, Indonesia.

Density
479/km²
people per km²
Founded
1999

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

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical June day in Bontang reaches about 29°C in the afternoon and slips back to 25°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°C. Set against its neighbours, June runs on par with May and on par with July.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12925
22925
32925
42925
52925
62925
72925
82925
92925
102925
112925
122925
132925
142925
152925
162925
172925
182925
192925
202925
212925
222925
232925
242925
252925
262925
272925
282925
292925
302925

How June really feels in Bontang

Once humidity and wind are folded in, June 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 June is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Bontang weather by month

How June compares with the rest of the year at a glance. June is the 9th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 25°20325.1123.4
Feb29° / 25°16321.9123.5
Mar29° / 25°20625.3123.4
Apr29° / 25°21426.5123.1
May29° / 25°19727123.2
Jun29° / 25°17724.8123.5
Jul29° / 25°15022.4123.9
Aug29° / 25°12420124.2
Sep29° / 25°13020.4123.9
Oct29° / 25°17625.3123.4
Nov29° / 25°22028.3122.9
Dec29° / 25°24828.9123.0

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 15% of June, with mostly cloudy or overcast conditions the remaining 74%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12773
22575
32575
42575
52575
62575
72575
82476
92476
102476
112476
122575
132575
142674
152674
162773
172773
182773
192872
202872
212872
222872
232872
242872
252872
262872
272872
282773
292773
302773

Chance of precipitation in June

Any precipitation

Bontang gets around 177 mm of rain over 24.8 wet days in June. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 82% and peaks near 86% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
186
286
386
486
586
686
786
886
986
1086
1185
1285
1384
1484
1583
1682
1782
1881
1981
2080
2180
2280
2379
2479
2579
2678
2778
2878
2978
3078

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the miserable band about 55% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
12575
22674
32773
42872
52971
63169
73268
83367
93466
103664
113763
123961
134060
144258
154456
164555
174753
184852
195050
205248
215347
225545
235644
245842
256040
266139
276337
286535
296733
306931

Wind in June

Winds average 8 km/h in June.

Across June, daily wind ranges from about 7 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 12 hours at the start of June to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over June. Sunrise moves from 6:07 AM to 6:13 AM, and sunset from 6:08 PM to 6:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:076:08
212.06:086:08
312.06:086:08
412.06:086:08
512.06:086:08
612.06:086:09
712.06:086:09
812.06:096:09
912.06:096:09
1012.06:096:09
1112.06:096:10
1212.06:096:10
1312.06:096:10
1412.06:106:10
1512.06:106:10
1612.06:106:11
1712.06:106:11
1812.06:106:11
1912.06:116:11
2012.06:116:11
2112.06:116:12
2212.06:116:12
2312.06:126:12
2412.06:126:12
2512.06:126:12
2612.06:126:13
2712.06:126:13
2812.06:136:13
2912.06:136:13
3012.06:136:13

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 4.5 kWh/m².

For context, solar energy here swings from a low near 4.42 kWh/m² to a high of 5.4 kWh/m² in September across the year — June's 4.5 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.6Bright
Planning a trip in June

Is June a good time to visit Bontang?

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

3.5
Sightseeing
4th-best month of the year
4.5
Beach & pool
5th-best month of the year

June is a weaker month for outdoor sightseeing in Bontang.

What to pack for Bontang in June

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

In June, Bontang sees daytime highs around 29°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.

light clothesrain gearsun protection

Sea temperature near Bontang in June

The nearest coast averages about 29°C in June — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 16 km away) is warmest in May at about 30°C and coldest in February near 29°C.

The water stays above 20°C all year — warm enough for a swim any month.

28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May30Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Bontang in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bontang peaks around March 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 12UV 15Jul 11UV 11
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar16Extreme
Apr15Extreme
May13Extreme
Jun11Extreme
Jul11Extreme
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov13Extreme
Dec12Extreme

Air quality in Bontang in June

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Bontang is worst in September — around 18 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (January, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 2218 µg/m³Jan 229 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar9Good
Apr11Good
May10Good
Jun12Good
Jul12Good
Aug14Moderate
Sep18Moderate
Oct17Moderate
Nov12Good
Dec11Good
Location & terrain

Where is Bontang?

Bontang sits at 0.1°N, 117.5°E, 10 m above sea level, in Indonesia. The nearest listed city is Samarinda, 79 km away.

PaluTanjung SelorMuara TewehTanjungTarakan

Topography around Bontang

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

Within 3 km, the terrain around Bontang has only modest variations in elevation — a maximum elevation change of 61 m around an average of 10 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 323 m; within 80 km, large variations in elevation — a maximum elevation change of 613 m.

The land around Bontang is covered by artificial surfaces (35%), trees (25%) and mangroves (25%) within 3 km, trees (43%) and water (41%) within 16 km, and trees (57%) and water (34%) within 80 km.

3 km
61 m
16 km
323 m
80 km
613 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
June weather nearby: Samarinda 79 km · Loa Janan 91 km · Balikpapan 172 km · Palu 289 km · Tanjung Selor 301 km · Muara Teweh 312 km · Tanjung 345 km · Tarakan 354 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 Bontang (0.1324°, 117.4854°, elevation 10 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).