Bontang weather in May
In May, Bontang sees average daytime highs of 29°C and overnight lows near 25°C, with 197 mm of rain across 27 wet days and about 12 hours of daylight. It is the 2nd-warmest and 6th-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 May, and the air most often feels miserable.
Daylight stretches from about 12 hours at the start of May to 12 hours by month's end. Set against the rest of the year, May is Bontang's 5th-clearest and 11th-windiest month. For the whole year in context, see Bontang's year-round climate.
- Daytime high
- 29°
- 2nd warmest
- Overnight low
- 25°
- 12th coldest
- Rainfall
- 197 mm
- 27 wet days
- Daylight
- 12 hours
- 6:06 AM – 6:06 PM
- Cloud cover
- 76%
- 5th clearest
- Wind
- 7 km/h
- 11th windiest
- Solar energy
- 4.7 kWh/m²
- Travel score
- 3.2
- 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 May
Day-to-day highs hold fairly steady near 29°C through the month.
A typical May 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, May runs on par with April and on par with June.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| Avg low (°C) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 29 | 25 |
| 2 | 29 | 25 |
| 3 | 29 | 25 |
| 4 | 29 | 25 |
| 5 | 29 | 25 |
| 6 | 29 | 25 |
| 7 | 29 | 25 |
| 8 | 29 | 25 |
| 9 | 29 | 25 |
| 10 | 29 | 25 |
| 11 | 29 | 25 |
| 12 | 29 | 25 |
| 13 | 29 | 25 |
| 14 | 29 | 25 |
| 15 | 29 | 25 |
| 16 | 29 | 25 |
| 17 | 29 | 25 |
| 18 | 29 | 25 |
| 19 | 29 | 25 |
| 20 | 29 | 25 |
| 21 | 29 | 25 |
| 22 | 29 | 25 |
| 23 | 29 | 25 |
| 24 | 29 | 25 |
| 25 | 29 | 25 |
| 26 | 29 | 25 |
| 27 | 29 | 25 |
| 28 | 29 | 25 |
| 29 | 29 | 25 |
| 30 | 29 | 25 |
| 31 | 29 | 25 |
How May really feels in Bontang
Once humidity and wind are folded in, May 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.
The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Bontang weather by month
How May compares with the rest of the year at a glance. May is the 2nd-warmest and 6th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 29° / 25° | 203 | 25.1 | 12 | 3.4 |
| Feb | 29° / 25° | 163 | 21.9 | 12 | 3.5 |
| Mar | 29° / 25° | 206 | 25.3 | 12 | 3.4 |
| Apr | 29° / 25° | 214 | 26.5 | 12 | 3.1 |
| May | 29° / 25° | 197 | 27 | 12 | 3.2 |
| Jun | 29° / 25° | 177 | 24.8 | 12 | 3.5 |
| Jul | 29° / 25° | 150 | 22.4 | 12 | 3.9 |
| Aug | 29° / 25° | 124 | 20 | 12 | 4.2 |
| Sep | 29° / 25° | 130 | 20.4 | 12 | 3.9 |
| Oct | 29° / 25° | 176 | 25.3 | 12 | 3.4 |
| Nov | 29° / 25° | 220 | 28.3 | 12 | 2.9 |
| Dec | 29° / 25° | 248 | 28.9 | 12 | 3.0 |
Cloud cover in May
The sky is clear or mostly clear about 11% of the time in May.
Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 76%. Skies tend to open up as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 19 | 19 | 19 | 18 | 19 | 19 | 19 | 19 | 20 | 21 | 21 | 22 | 23 | 24 | 25 | 26 | 26 | 27 | 28 | 29 | 29 | 29 | 30 | 30 | 31 | 30 | 30 | 29 | 28 | 28 | 27 |
| Cloudier (%) | 81 | 81 | 81 | 82 | 81 | 81 | 81 | 81 | 80 | 79 | 79 | 78 | 77 | 76 | 75 | 74 | 74 | 73 | 72 | 71 | 71 | 71 | 70 | 70 | 69 | 70 | 70 | 71 | 72 | 72 | 73 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 19 | 81 |
| 2 | 19 | 81 |
| 3 | 19 | 81 |
| 4 | 18 | 82 |
| 5 | 19 | 81 |
| 6 | 19 | 81 |
| 7 | 19 | 81 |
| 8 | 19 | 81 |
| 9 | 20 | 80 |
| 10 | 21 | 79 |
| 11 | 21 | 79 |
| 12 | 22 | 78 |
| 13 | 23 | 77 |
| 14 | 24 | 76 |
| 15 | 25 | 75 |
| 16 | 26 | 74 |
| 17 | 26 | 74 |
| 18 | 27 | 73 |
| 19 | 28 | 72 |
| 20 | 29 | 71 |
| 21 | 29 | 71 |
| 22 | 29 | 71 |
| 23 | 30 | 70 |
| 24 | 30 | 70 |
| 25 | 31 | 69 |
| 26 | 30 | 70 |
| 27 | 30 | 70 |
| 28 | 29 | 71 |
| 29 | 28 | 72 |
| 30 | 28 | 72 |
| 31 | 27 | 73 |
Chance of precipitation in May
Bontang gets around 197 mm of rain over 27 wet days in May. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 87% and peaks near 90% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 89 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 89 | 89 | 89 | 88 | 88 | 88 | 87 | 87 | 86 | 86 | 85 | 85 | 85 | 85 | 85 | 85 | 85 | 85 | 85 | 85 | 86 |
| Rain chance (%) | |
|---|---|
| 1 | 89 |
| 2 | 90 |
| 3 | 90 |
| 4 | 90 |
| 5 | 90 |
| 6 | 90 |
| 7 | 90 |
| 8 | 90 |
| 9 | 90 |
| 10 | 90 |
| 11 | 89 |
| 12 | 89 |
| 13 | 89 |
| 14 | 88 |
| 15 | 88 |
| 16 | 88 |
| 17 | 87 |
| 18 | 87 |
| 19 | 86 |
| 20 | 86 |
| 21 | 85 |
| 22 | 85 |
| 23 | 85 |
| 24 | 85 |
| 25 | 85 |
| 26 | 85 |
| 27 | 85 |
| 28 | 85 |
| 29 | 85 |
| 30 | 85 |
| 31 | 86 |
Humidity in May
Most of May feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, May lands in the miserable band about 83% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oppressive (%) | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
| Miserable (%) | 83 | 83 | 83 | 83 | 83 | 83 | 84 | 84 | 84 | 84 | 85 | 85 | 85 | 85 | 86 | 86 | 86 | 86 | 86 | 86 | 85 | 85 | 84 | 83 | 82 | 81 | 80 | 79 | 78 | 77 | 76 |
| Oppressive (%) | Miserable (%) | |
|---|---|---|
| 1 | 17 | 83 |
| 2 | 17 | 83 |
| 3 | 17 | 83 |
| 4 | 17 | 83 |
| 5 | 17 | 83 |
| 6 | 17 | 83 |
| 7 | 16 | 84 |
| 8 | 16 | 84 |
| 9 | 16 | 84 |
| 10 | 16 | 84 |
| 11 | 15 | 85 |
| 12 | 15 | 85 |
| 13 | 15 | 85 |
| 14 | 15 | 85 |
| 15 | 14 | 86 |
| 16 | 14 | 86 |
| 17 | 14 | 86 |
| 18 | 14 | 86 |
| 19 | 14 | 86 |
| 20 | 14 | 86 |
| 21 | 15 | 85 |
| 22 | 15 | 85 |
| 23 | 16 | 84 |
| 24 | 17 | 83 |
| 25 | 18 | 82 |
| 26 | 19 | 81 |
| 27 | 20 | 80 |
| 28 | 21 | 79 |
| 29 | 22 | 78 |
| 30 | 23 | 77 |
| 31 | 24 | 76 |
Wind in May
Winds average 7 km/h in May.
Across May, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 7 | calm |
| 2 | 7 | calm |
| 3 | 7 | calm |
| 4 | 7 | calm |
| 5 | 7 | calm |
| 6 | 7 | calm |
| 7 | 7 | calm |
| 8 | 7 | calm |
| 9 | 7 | calm |
| 10 | 7 | calm |
| 11 | 7 | calm |
| 12 | 7 | calm |
| 13 | 7 | calm |
| 14 | 7 | calm |
| 15 | 7 | calm |
| 16 | 7 | calm |
| 17 | 7 | calm |
| 18 | 7 | calm |
| 19 | 7 | calm |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | calm |
| 27 | 7 | calm |
| 28 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
| 31 | 7 | calm |
Sunrise & sunset in May
Daylight runs from about 12 hours at the start of May to 12 hours by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 0 minutes over May. Sunrise moves from 6:07 AM to 6:07 AM, and sunset from 6:07 PM to 6:08 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Sunrise (AM) | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 |
| Sunset (PM) | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:06 | 6:06 | 6:06 | 6:06 | 6:06 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:07 | 6:08 | 6:08 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 12.0 | 6:07 | 6:07 |
| 2 | 12.0 | 6:07 | 6:07 |
| 3 | 12.0 | 6:07 | 6:07 |
| 4 | 12.0 | 6:07 | 6:07 |
| 5 | 12.0 | 6:07 | 6:07 |
| 6 | 12.0 | 6:07 | 6:07 |
| 7 | 12.0 | 6:06 | 6:07 |
| 8 | 12.0 | 6:06 | 6:07 |
| 9 | 12.0 | 6:06 | 6:07 |
| 10 | 12.0 | 6:06 | 6:07 |
| 11 | 12.0 | 6:06 | 6:07 |
| 12 | 12.0 | 6:06 | 6:07 |
| 13 | 12.0 | 6:06 | 6:06 |
| 14 | 12.0 | 6:06 | 6:06 |
| 15 | 12.0 | 6:06 | 6:06 |
| 16 | 12.0 | 6:06 | 6:06 |
| 17 | 12.0 | 6:06 | 6:06 |
| 18 | 12.0 | 6:06 | 6:07 |
| 19 | 12.0 | 6:06 | 6:07 |
| 20 | 12.0 | 6:06 | 6:07 |
| 21 | 12.0 | 6:06 | 6:07 |
| 22 | 12.0 | 6:06 | 6:07 |
| 23 | 12.0 | 6:06 | 6:07 |
| 24 | 12.0 | 6:06 | 6:07 |
| 25 | 12.0 | 6:07 | 6:07 |
| 26 | 12.0 | 6:07 | 6:07 |
| 27 | 12.0 | 6:07 | 6:07 |
| 28 | 12.0 | 6:07 | 6:07 |
| 29 | 12.0 | 6:07 | 6:07 |
| 30 | 12.0 | 6:07 | 6:08 |
| 31 | 12.0 | 6:07 | 6:08 |
Solar energy in May
Average shortwave solar energy reaching the ground each day in May, about 4.7 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 — May's 4.7 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.6 | 4.6 | 4.6 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.7 | 4.6 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.7 | Bright |
| 2 | 4.7 | Bright |
| 3 | 4.7 | Bright |
| 4 | 4.7 | Bright |
| 5 | 4.7 | Bright |
| 6 | 4.7 | Bright |
| 7 | 4.7 | Bright |
| 8 | 4.7 | Bright |
| 9 | 4.6 | Bright |
| 10 | 4.6 | Bright |
| 11 | 4.6 | Bright |
| 12 | 4.7 | Bright |
| 13 | 4.7 | Bright |
| 14 | 4.7 | Bright |
| 15 | 4.7 | Bright |
| 16 | 4.7 | Bright |
| 17 | 4.7 | Bright |
| 18 | 4.7 | Bright |
| 19 | 4.7 | Bright |
| 20 | 4.7 | Bright |
| 21 | 4.7 | Bright |
| 22 | 4.7 | Bright |
| 23 | 4.7 | Bright |
| 24 | 4.7 | Bright |
| 25 | 4.7 | Bright |
| 26 | 4.7 | Bright |
| 27 | 4.7 | Bright |
| 28 | 4.7 | Bright |
| 29 | 4.7 | Bright |
| 30 | 4.7 | Bright |
| 31 | 4.6 | Bright |
Is May a good time to visit Bontang?
Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
May is a weaker month for outdoor sightseeing in Bontang.
What to pack for Bontang in May
From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In May, Bontang sees daytime highs around 29°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.
Sea temperature near Bontang in May
The nearest coast averages about 30°C in May — 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 29 | 29 | 29 | 29 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 29 | Tropical |
| Feb | 29 | Tropical |
| Mar | 29 | Tropical |
| Apr | 29 | Tropical |
| May | 30 | Tropical |
| Jun | 29 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 29 | Tropical |
UV index in Bontang in May
Clear-sky midday UV in May 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 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 14 | 15 | 16 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 15 | Extreme |
| Mar | 16 | Extreme |
| Apr | 15 | Extreme |
| May | 13 | Extreme |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 12 | Extreme |
| Sep | 13 | Extreme |
| Oct | 13 | Extreme |
| Nov | 13 | Extreme |
| Dec | 12 | Extreme |
Air quality in Bontang in May
Average fine-particle pollution (PM2.5) through the year — so you can see where May 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 9 | 9 | 9 | 11 | 10 | 12 | 12 | 14 | 18 | 17 | 12 | 11 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 9 | Good |
| Mar | 9 | Good |
| Apr | 11 | Good |
| May | 10 | Good |
| Jun | 12 | Good |
| Jul | 12 | Good |
| Aug | 14 | Moderate |
| Sep | 18 | Moderate |
| Oct | 17 | Moderate |
| Nov | 12 | Good |
| Dec | 11 | Good |
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.
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.
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
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).