Rantepao in Summer
In summer (December, January and February), Rantepao sees average daytime highs around 28°C and overnight lows near 20°C, with 1477 mm of rain over about 86 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 28°C. The sky is clear or mostly clear about 1% of the time across summer, and the air most often feels muggy.
Summer is Rantepao's weakest season of the year to visit on our travel score. Rantepao 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 Rantepao's year-round climate.
- Avg daytime high
- 28°C
- 2nd-warmest season
- Avg overnight low
- 20°C
- Rainfall
- 1477 mm
- 86 wet days
- Avg wind
- 3 km/h
- Travel score
- 3.3
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Rantepao in Summer
Across summer, daytime highs hold fairly steady around 28°C.
A typical summer day in Rantepao reaches about 28°C and drops to 20°C overnight. The warmest of the three months is December, the coolest December.
Rantepao 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° / 20° | 496 | 29.5 | 12.2 | 3.3 |
| Feb | 28° / 20° | 483 | 27.4 | 12.1 | 3.2 |
| Mar | 28° / 20° | 495 | 29.5 | 12 | 3.3 |
| Apr | 27° / 20° | 503 | 27.8 | 11.9 | 3.5 |
| May | 27° / 20° | 262 | 24.5 | 11.9 | 4.2 |
| Jun | 27° / 20° | 203 | 21.2 | 11.8 | 4.7 |
| Jul | 26° / 19° | 129 | 18.2 | 11.8 | 5.3 |
| Aug | 27° / 19° | 94 | 15.3 | 11.9 | 5.8 |
| Sep | 28° / 19° | 75 | 12.2 | 12 | 6.0 |
| Oct | 28° / 19° | 133 | 15.2 | 12.1 | 4.9 |
| Nov | 28° / 20° | 226 | 23.1 | 12.1 | 3.8 |
| Dec | 28° / 20° | 498 | 29.5 | 12.2 | 3.3 |
Cloud cover in Summer
The sky is clear or mostly clear about 1% of the time across summer.
Chance of precipitation in Summer
Rantepao gets around 1477 mm of rain over 86 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 3 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 12 min in early December to 12 h 06 min 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 4.8 kWh/m².
Hazard calendar for Rantepao
In summer, Rantepao overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Rantepao's rainy season runs December–May, when most of the year's rain falls.
Is summer a good time to visit Rantepao?
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 Rantepao.
What to pack for Rantepao in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Rantepao sees daytime highs around 28°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 86 days see rain.
Sea temperature near Rantepao 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 54 km away) is warmest in March 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 | 30 | 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 | 30 | Tropical |
| Nov | 30 | Tropical |
| Dec | 30 | Tropical |
UV index in Rantepao in Summer
Clear-sky midday UV across summer averages around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Rantepao peaks around March 15 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 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) | 16 | 15 | 16 | 15 | 13 | 11 | 12 | 13 | 14 | 15 | 14 | 14 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 16 | Extreme |
| Feb | 15 | Extreme |
| Mar | 16 | Extreme |
| Apr | 15 | Extreme |
| May | 13 | Extreme |
| Jun | 11 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 14 | Extreme |
| Oct | 15 | Extreme |
| Nov | 14 | Extreme |
| Dec | 14 | Extreme |
Air quality in Rantepao 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 Rantepao is worst in October — around 20 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (July, 12 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) | 13 | 12 | 14 | 13 | 12 | 12 | 12 | 13 | 17 | 20 | 17 | 14 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 13 | Moderate |
| Feb | 12 | Moderate |
| Mar | 14 | Moderate |
| Apr | 13 | Moderate |
| May | 12 | Moderate |
| Jun | 12 | Good |
| Jul | 12 | Good |
| Aug | 13 | Moderate |
| Sep | 17 | Moderate |
| Oct | 20 | Moderate |
| Nov | 17 | Moderate |
| Dec | 14 | Moderate |
Where is Rantepao?
Rantepao sits at 3.0°S, 119.9°E, 784 m above sea level, in Indonesia. The nearest listed city is Palopo, 33 km away.
Topography around Rantepao
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rantepao.
Within 3 km, the terrain around Rantepao has significant variations in elevation — a maximum elevation change of 322 m around an average of 816 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,593 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,407 m.
The land around Rantepao is covered by trees (56%) and cropland (24%) within 3 km, trees (80%) within 16 km, and trees (78%) 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 Rantepao (-2.9701°, 119.8978°, elevation 784 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.