Poso in Winter
In winter (June, July and August), Poso sees average daytime highs around 27°C and overnight lows near 21°C, with 651 mm of rain over about 68 wet days across the season. It is the 2nd-warmest season and the driest season of the year.
Across winter, daytime highs hold fairly steady around 27°C. The sky is clear or mostly clear about 9% of the time across winter, and the air most often feels muggy.
Winter is Poso's best season of the year to visit on our travel score. Poso 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 Poso's year-round climate.
- Avg daytime high
- 27°C
- 2nd-warmest season
- Avg overnight low
- 21°C
- Rainfall
- 651 mm
- 68 wet days
- Avg wind
- 5 km/h
- Travel score
- 4.5
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Poso in Winter
Across winter, daytime highs hold fairly steady around 27°C.
A typical winter day in Poso reaches about 27°C and drops to 21°C overnight. The warmest of the three months is August, the coolest August.
Poso weather by month
How the three winter 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 | 27° / 20° | 278 | 27.4 | 12.1 | 3.6 |
| Feb | 27° / 20° | 241 | 25 | 12 | 3.7 |
| Mar | 27° / 21° | 360 | 28.6 | 12 | 3.5 |
| Apr | 27° / 21° | 433 | 29.2 | 12 | 3.3 |
| May | 28° / 21° | 354 | 29.2 | 11.9 | 3.5 |
| Jun | 27° / 21° | 288 | 25.8 | 11.9 | 3.9 |
| Jul | 27° / 21° | 204 | 22.6 | 11.9 | 4.5 |
| Aug | 28° / 21° | 159 | 19.1 | 12 | 5.0 |
| Sep | 28° / 20° | 165 | 17.6 | 12 | 4.7 |
| Oct | 28° / 21° | 245 | 22.5 | 12 | 4.0 |
| Nov | 28° / 21° | 350 | 28.2 | 12.1 | 3.5 |
| Dec | 27° / 21° | 345 | 30.3 | 12.1 | 3.3 |
Cloud cover in Winter
The sky is clear or mostly clear about 9% of the time across winter.
Chance of precipitation in Winter
Poso gets around 651 mm of rain over 68 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 5 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 11 h 54 min in early June to 12 hours by late August. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 4.7 kWh/m².
Is winter a good time to visit Poso?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a reasonable time to visit Poso for sightseeing.
What to pack for Poso in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Poso sees daytime highs around 27°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 68 days see rain.
Sea temperature near Poso in Winter
The nearest coast averages about 30°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 14 km away) is warmest in April 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) | 30 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 30 | Tropical |
| Feb | 29 | Tropical |
| Mar | 30 | Tropical |
| Apr | 30 | Tropical |
| May | 30 | Tropical |
| Jun | 30 | Tropical |
| Jul | 30 | Tropical |
| Aug | 30 | Tropical |
| Sep | 30 | Tropical |
| Oct | 30 | Tropical |
| Nov | 30 | Tropical |
| Dec | 30 | Tropical |
UV index in Poso in Winter
Clear-sky midday UV across winter 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 Poso peaks around February 19 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) | 15 | 16 | 15 | 14 | 13 | 11 | 12 | 13 | 13 | 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 | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 13 | Extreme |
| Oct | 14 | Extreme |
| Nov | 13 | Extreme |
| Dec | 12 | Extreme |
Air quality in Poso in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Poso is worst in October — around 17 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (February, 8 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) | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 14 | 17 | 12 | 9 |
| Level | Good | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 8 | Good |
| Mar | 8 | Good |
| Apr | 9 | Good |
| May | 9 | Good |
| Jun | 9 | Good |
| Jul | 9 | Good |
| Aug | 9 | Good |
| Sep | 14 | Moderate |
| Oct | 17 | Moderate |
| Nov | 12 | Good |
| Dec | 9 | Good |
Where is Poso?
Poso sits at 1.4°S, 120.8°E, 10 m above sea level, in Indonesia. The nearest listed city is Palu, 112 km away.
Topography around Poso
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Poso.
Within 3 km, the terrain around Poso has only modest variations in elevation — a maximum elevation change of 229 m around an average of 47 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 737 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,772 m.
The land around Poso is covered by trees (65%) and water (20%) within 3 km, trees (52%) and water (43%) within 16 km, and trees (65%) and water (30%) 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 Poso (-1.3959°, 120.7524°, 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.