Nunukan in Summer
In summer (June, July and August), Nunukan sees average daytime highs around 30°C and overnight lows near 24°C, with 607 mm of rain over about 85 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Across summer, daytime highs hold fairly steady around 30°C. The sky is clear or mostly clear about 7% of the time across summer, and the air most often feels miserable.
Summer is Nunukan's 3rd-best season to visit on our travel score. Nunukan has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Nunukan's year-round climate.
- Avg daytime high
- 30°C
- 3rd-warmest season
- Avg overnight low
- 24°C
- Rainfall
- 607 mm
- 85 wet days
- Avg wind
- 5 km/h
- Travel score
- 2.8
- 3rd-best season
- Months
- Jun · Jul · Aug
Temperature in Nunukan in Summer
Across summer, daytime highs hold fairly steady around 30°C.
A typical summer day in Nunukan reaches about 30°C and drops to 24°C overnight. The warmest of the three months is June, the coolest July.
How summer really feels in Nunukan
Once humidity and wind are folded in, summer brings about 92 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Nunukan weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 30° / 24° | 168 | 22.4 | 11.8 | 3.4 |
| Feb | 30° / 24° | 125 | 17.6 | 11.9 | 3.6 |
| Mar | 31° / 24° | 156 | 23.4 | 12 | 3.2 |
| Apr | 31° / 25° | 172 | 26.5 | 12.1 | 2.8 |
| May | 31° / 25° | 222 | 29.9 | 12.2 | 2.5 |
| Jun | 30° / 25° | 217 | 28.2 | 12.2 | 2.7 |
| Jul | 30° / 24° | 198 | 28.6 | 12.2 | 2.8 |
| Aug | 30° / 24° | 192 | 28.5 | 12.1 | 2.8 |
| Sep | 30° / 24° | 186 | 27 | 12 | 2.8 |
| Oct | 30° / 24° | 224 | 28.6 | 11.9 | 2.7 |
| Nov | 30° / 24° | 199 | 28 | 11.8 | 2.6 |
| Dec | 30° / 24° | 197 | 26.7 | 11.8 | 2.9 |
Cloud cover in Summer
The sky is clear or mostly clear about 7% of the time across summer.
Chance of precipitation in Summer
Nunukan gets around 607 mm of rain over 85 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 5 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 12 min in early June to 12 h 06 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 4.9 kWh/m².
Hazard calendar for Nunukan
In summer, Nunukan overlaps its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Nunukan sits in the Pacific typhoon belt; the season peaks July–October.
Is summer a good time to visit Nunukan?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in Nunukan.
What to pack for Nunukan in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Nunukan sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 85 days see rain.
Sea temperature near Nunukan in Summer
The nearest coast averages about 29°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 38 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 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 30 | 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 | 30 | Tropical |
| May | 30 | Tropical |
| Jun | 30 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 30 | Tropical |
| Dec | 29 | Tropical |
UV index in Nunukan in Summer
Clear-sky midday UV across summer averages around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Nunukan peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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) | 13 | 14 | 15 | 14 | 14 | 12 | 11 | 13 | 13 | 13 | 12 | 11 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 14 | Extreme |
| Mar | 15 | Extreme |
| Apr | 14 | Extreme |
| May | 14 | Extreme |
| Jun | 12 | Extreme |
| Jul | 11 | Extreme |
| Aug | 13 | Extreme |
| Sep | 13 | Extreme |
| Oct | 13 | Extreme |
| Nov | 12 | Extreme |
| Dec | 11 | Extreme |
Air quality in Nunukan in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Nunukan is worst in September — around 16 µg/m³ PM2.5 (moderate), about 1.8× 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 | 10 | 12 | 12 | 12 | 11 | 12 | 14 | 16 | 15 | 11 | 10 |
| Level | Good | Good | Moderate | Moderate | Good | Good | Good | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 10 | Good |
| Mar | 12 | Moderate |
| Apr | 12 | Moderate |
| May | 12 | Good |
| Jun | 11 | Good |
| Jul | 12 | Good |
| Aug | 14 | Moderate |
| Sep | 16 | Moderate |
| Oct | 15 | Moderate |
| Nov | 11 | Good |
| Dec | 10 | Good |
Where is Nunukan?
Nunukan sits at 4.1°N, 117.7°E, 19 m above sea level, in Indonesia. The nearest listed city is Tawau, 29 km away.
Topography around Nunukan
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Nunukan.
Within 3 km, the terrain around Nunukan has only modest variations in elevation — a maximum elevation change of 110 m around an average of 18 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 432 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,504 m.
The land around Nunukan is covered by water (45%) and trees (37%) within 3 km, trees (43%), water (30%) and mangroves (22%) within 16 km, and trees (58%) and water (31%) 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 Nunukan (4.1384°, 117.6507°, elevation 19 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.