Luwuk in Summer
In summer (December, January and February), Luwuk sees average daytime highs around 28°C and overnight lows near 23°C, with 386 mm of rain over about 62 wet days across the season. It is the warmest season of the year and the 2nd-wettest season.
Across summer, daytime highs hold fairly steady around 28°C. The sky is clear or mostly clear about 2% of the time across summer, and the air most often feels oppressive.
Summer is Luwuk's 3rd-best season to visit on our travel score. Luwuk 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 Luwuk's year-round climate.
- Avg daytime high
- 28°C
- warmest season of the year
- Avg overnight low
- 23°C
- Rainfall
- 386 mm
- 62 wet days
- Avg wind
- 6 km/h
- Travel score
- 4.3
- 3rd-best season
- Months
- Dec · Jan · Feb
Temperature in Luwuk in Summer
Across summer, daytime highs hold fairly steady around 28°C.
A typical summer day in Luwuk reaches about 28°C and drops to 23°C overnight. The warmest of the three months is December, the coolest February.
Luwuk weather by month
How the three summer months (December, January and February) 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 | 28° / 23° | 114 | 19.6 | 12 | 4.6 |
| Feb | 28° / 23° | 111 | 17.8 | 12 | 4.5 |
| Mar | 28° / 23° | 179 | 24 | 12 | 4.0 |
| Apr | 28° / 23° | 231 | 26.3 | 12 | 3.8 |
| May | 27° / 23° | 205 | 25.1 | 12 | 4.2 |
| Jun | 26° / 22° | 184 | 22.6 | 11.9 | 4.5 |
| Jul | 26° / 21° | 123 | 18.5 | 12 | 5.3 |
| Aug | 26° / 21° | 74 | 12.4 | 12 | 6.2 |
| Sep | 27° / 21° | 51 | 9 | 12 | 6.5 |
| Oct | 28° / 22° | 74 | 11.5 | 12 | 5.7 |
| Nov | 28° / 23° | 122 | 21.3 | 12 | 4.1 |
| Dec | 28° / 23° | 161 | 24.5 | 12.1 | 3.9 |
Cloud cover in Summer
The sky is clear or mostly clear about 2% of the time across summer.
Chance of precipitation in Summer
Luwuk gets around 386 mm of rain over 62 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 6 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 06 min in early December to 12 hours by late February. 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 5.2 kWh/m².
Is summer a good time to visit Luwuk?
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 reasonable time to visit Luwuk for sightseeing.
What to pack for Luwuk in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Luwuk sees daytime highs around 28°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 62 days see rain.
Sea temperature near Luwuk in Summer
The nearest coast averages about 30°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 13 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 28 | 29 | 29 | 30 | 30 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 30 | Tropical |
| Feb | 30 | Tropical |
| Mar | 30 | Tropical |
| Apr | 30 | Tropical |
| May | 30 | Tropical |
| Jun | 29 | Tropical |
| Jul | 29 | Tropical |
| Aug | 28 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 30 | Tropical |
| Dec | 30 | Tropical |
UV index in Luwuk in Summer
Clear-sky midday UV across summer averages around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Luwuk peaks around February 19 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 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) | 15 | 16 | 15 | 14 | 13 | 11 | 11 | 13 | 14 | 14 | 13 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 16 | Extreme |
| Mar | 15 | Extreme |
| Apr | 14 | Extreme |
| May | 13 | Extreme |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 13 | Extreme |
| Sep | 14 | Extreme |
| Oct | 14 | Extreme |
| Nov | 13 | Extreme |
| Dec | 12 | Extreme |
Where is Luwuk?
Luwuk sits at 1.0°S, 122.8°E, 17 m above sea level, in Indonesia. The nearest listed city is Gorontalo, 168 km away.
Topography around Luwuk
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Luwuk.
Within 3 km, the terrain around Luwuk has significant variations in elevation — a maximum elevation change of 523 m around an average of 189 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,495 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,513 m.
The land around Luwuk is covered by trees (50%) and water (28%) within 3 km, trees (62%) and water (32%) within 16 km, and water (56%) and trees (42%) 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 Luwuk (-0.9516°, 122.7875°, elevation 17 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.