Sinjai in Winter
In winter (June, July and August), Sinjai sees average daytime highs around 27°C and overnight lows near 23°C, with 451 mm of rain over about 65 wet days across the season. It is the coldest season of the year and the 3rd-wettest season.
Across winter, daytime highs hold fairly steady around 27°C. The sky is clear or mostly clear about 29% of the time across winter, and the air most often feels oppressive.
Winter is Sinjai's 2nd-best season to visit on our travel score. Sinjai 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 Sinjai's year-round climate.
- Avg daytime high
- 27°C
- coldest season of the year
- Avg overnight low
- 23°C
- Rainfall
- 451 mm
- 65 wet days
- Avg wind
- 10 km/h
- Travel score
- 4.8
- 2nd-best season
- Months
- Jun · Jul · Aug
Temperature in Sinjai in Winter
Across winter, daytime highs hold fairly steady around 27°C.
A typical winter day in Sinjai reaches about 27°C and drops to 23°C overnight. The warmest of the three months is June, the coolest July.
How winter really feels in Sinjai
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
winter sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Sinjai 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 | 29° / 25° | 186 | 25 | 12.3 | 3.4 |
| Feb | 29° / 25° | 170 | 22.9 | 12.2 | 3.3 |
| Mar | 29° / 25° | 186 | 26.9 | 12 | 3.3 |
| Apr | 28° / 25° | 199 | 27.1 | 11.9 | 3.3 |
| May | 28° / 24° | 207 | 27.4 | 11.8 | 3.9 |
| Jun | 27° / 24° | 219 | 25.8 | 11.7 | 4.1 |
| Jul | 27° / 23° | 166 | 23.5 | 11.7 | 4.6 |
| Aug | 27° / 23° | 66 | 15.6 | 11.8 | 5.8 |
| Sep | 28° / 24° | 39 | 9.6 | 12 | 6.3 |
| Oct | 29° / 24° | 61 | 12.4 | 12.1 | 5.2 |
| Nov | 30° / 25° | 115 | 19.2 | 12.2 | 4.0 |
| Dec | 29° / 25° | 183 | 26.4 | 12.3 | 3.2 |
Cloud cover in Winter
The sky is clear or mostly clear about 29% of the time across winter.
Chance of precipitation in Winter
Sinjai gets around 451 mm of rain over 65 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 10 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 11 h 42 min in early June to 11 h 54 min 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 4.9 kWh/m².
Hazard calendar for Sinjai
None of Sinjai's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Sinjai sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Is winter a good time to visit Sinjai?
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 Sinjai for sightseeing.
What to pack for Sinjai in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Sinjai sees daytime highs around 27°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 65 days see rain.
Sea temperature near Sinjai in Winter
The nearest coast averages about 28°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 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 | 29 | 30 | 30 | 29 | 29 | 28 | 28 | 28 | 29 | 30 | 30 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Tropical | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 30 | Tropical |
| Feb | 29 | Tropical |
| Mar | 30 | Tropical |
| Apr | 30 | Tropical |
| May | 29 | Tropical |
| Jun | 29 | Tropical |
| Jul | 28 | Warm |
| Aug | 28 | Warm |
| Sep | 28 | Tropical |
| Oct | 29 | Tropical |
| Nov | 30 | Tropical |
| Dec | 30 | Tropical |
UV index in Sinjai in Winter
Clear-sky midday UV across winter averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Sinjai peaks around February 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 10 (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 | 15 | 15 | 14 | 12 | 10 | 10 | 12 | 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 | 15 | Extreme |
| Mar | 15 | Extreme |
| Apr | 14 | Extreme |
| May | 12 | Extreme |
| Jun | 10 | Extreme |
| Jul | 10 | Extreme |
| Aug | 12 | Extreme |
| Sep | 13 | Extreme |
| Oct | 14 | Extreme |
| Nov | 13 | Extreme |
| Dec | 12 | Extreme |
Where is Sinjai?
Sinjai sits at 5.1°S, 120.3°E, 6 m above sea level, in Indonesia. The nearest listed city is Watampone, 66 km away.
Topography around Sinjai
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sinjai.
Within 3 km, the terrain around Sinjai has only modest variations in elevation — a maximum elevation change of 100 m around an average of 21 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 717 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,838 m.
The land around Sinjai is covered by trees (38%) and cropland (21%) within 3 km, trees (46%) and water (35%) within 16 km, and trees (48%) and water (41%) 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 Sinjai (-5.1241°, 120.253°, elevation 6 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.