Bontang weather in July

In July, Bontang sees average daytime highs of 29°C and overnight lows near 25°C, with 150 mm of rain across 22.4 wet days and about 12 hours of daylight. It is the 12th-warmest and 10th-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 13% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of July to 12 hours by month's end. Set against the rest of the year, July is Bontang's 3rd-clearest and 2nd-windiest month. For the whole year in context, see Bontang's year-round climate.

Daytime high
29°
12th warmest
Overnight low
25°
5th coldest
Rainfall
150 mm
22.4 wet days
Daylight
12 hours
6:15 AM – 6:16 PM
Cloud cover
72%
3rd clearest
Wind
9 km/h
2nd windiest
Solar energy
4.67 kWh/m²
Travel score
3.9
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 July

Average highAverage lowShaded bands: 10–90% of days

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

A typical July 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, July runs on par with June and on par with August.

20°23°25°28°30°151015202531
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
312925

How July really feels in Bontang

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

Bontang weather by month

How July compares with the rest of the year at a glance. July is the 12th-warmest and 10th-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 July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 18% of July, with mostly cloudy or overcast conditions the remaining 69%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12773
22674
32674
42674
52773
62773
72773
82773
92773
102971
112971
123070
133169
143169
153268
163268
173367
183367
193466
203466
213565
223565
233565
243565
253466
263466
273466
283466
293466
303466
313466

Chance of precipitation in July

Any precipitation

Bontang gets around 150 mm of rain over 22.4 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 72% and peaks near 78% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
178
277
377
476
576
675
775
874
974
1074
1173
1273
1373
1473
1573
1673
1773
1873
1973
2072
2172
2271
2371
2470
2570
2669
2768
2867
2966
3065
3164

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the oppressive band about 78% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
17030
27228
37327
47426
57525
67624
77723
87822
97822
107822
117822
127822
137822
147822
157822
167822
177921
187921
197921
207921
218020
228020
238119
248119
258218
268218
278218
288218
298218
308218
318218

Wind in July

Winds average 9 km/h in July.

Across July, daily wind ranges from about 9 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3011calm
3111calm

Sunrise & sunset in July

DaylightNight

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

Days grow by about 0 minutes over July. Sunrise moves from 6:13 AM to 6:16 AM, and sunset from 6:14 PM to 6:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:136:14
212.06:136:14
312.06:146:14
412.06:146:14
512.06:146:14
612.06:146:15
712.06:146:15
812.06:146:15
912.06:156:15
1012.06:156:15
1112.06:156:15
1212.06:156:15
1312.06:156:16
1412.06:156:16
1512.06:156:16
1612.06:156:16
1712.06:166:16
1812.06:166:16
1912.06:166:16
2012.06:166:16
2112.06:166:16
2212.06:166:16
2312.06:166:16
2412.06:166:16
2512.06:166:16
2612.06:166:16
2712.06:166:16
2812.06:166:16
2912.06:166:16
3012.06:166:16
3112.06:166:16

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 4.67 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 — July's 4.67 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.7Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.9Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in July

Is July a good time to visit Bontang?

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

3.9
Sightseeing
2nd-best month of the year
4.9
Beach & pool
3rd-best month of the year

July is a weaker month for outdoor sightseeing in Bontang.

What to pack for Bontang in July

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

In July, Bontang sees daytime highs around 29°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

Sea temperature near Bontang in July

The nearest coast averages about 29°C in July — 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 July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July 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
July 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).