Batu in Winter
In winter (June, July and August), Batu sees average daytime highs around 27°C and overnight lows near 17°C, with 160 mm of rain over about 30 wet days across the season. It is the 3rd-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 13% of the time across winter, and the air most often feels humid.
Winter is Batu's best season of the year to visit on our travel score. For the whole year in context, see Batu's year-round climate.
- Avg daytime high
- 27°C
- 3rd-warmest season
- Avg overnight low
- 17°C
- Rainfall
- 160 mm
- 30 wet days
- Avg wind
- 4 km/h
- Travel score
- 6.4
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Batu in Winter
Across winter, daytime highs hold fairly steady around 27°C.
A typical winter day in Batu reaches about 27°C and drops to 17°C overnight. The warmest of the three months is August, the coolest August.
Batu 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° | 510 | 29.7 | 12.4 | 3.4 |
| Feb | 26° / 20° | 493 | 27.6 | 12.3 | 3.3 |
| Mar | 27° / 20° | 464 | 28.9 | 12.1 | 3.5 |
| Apr | 27° / 20° | 295 | 25.5 | 11.8 | 3.9 |
| May | 27° / 19° | 138 | 18.5 | 11.6 | 5.1 |
| Jun | 27° / 18° | 72 | 12.8 | 11.6 | 6.0 |
| Jul | 26° / 17° | 51 | 9.8 | 11.6 | 6.5 |
| Aug | 27° / 17° | 37 | 7.4 | 11.7 | 6.7 |
| Sep | 28° / 18° | 57 | 8.1 | 12 | 6.5 |
| Oct | 28° / 19° | 152 | 15.4 | 12.2 | 5.4 |
| Nov | 27° / 20° | 326 | 23.3 | 12.4 | 4.1 |
| Dec | 27° / 20° | 436 | 28.4 | 12.4 | 3.6 |
Cloud cover in Winter
The sky is clear or mostly clear about 13% of the time across winter.
Chance of precipitation in Winter
Batu gets around 160 mm of rain over 30 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 4 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 11 h 36 min in early June to 11 h 48 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 5.2 kWh/m².
Hazard calendar for Batu
None of Batu's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Batu sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Batu's monsoon runs November–April, when most of the year's rain falls.
Is winter a good time to visit Batu?
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 Batu for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Batu in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Batu sees daytime highs around 27°C and nights near 17°C. Worth packing: light clothes, rain gear and sun protection. About 30 days see rain.
Sea temperature near Batu 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 47 km away) is warmest in November 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) | 29 | 29 | 29 | 30 | 30 | 29 | 28 | 28 | 28 | 29 | 30 | 30 |
| 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 | 29 | Tropical |
| Jul | 28 | Tropical |
| Aug | 28 | Tropical |
| Sep | 28 | Tropical |
| Oct | 29 | Tropical |
| Nov | 30 | Tropical |
| Dec | 30 | Tropical |
UV index in Batu in Winter
Clear-sky midday UV across winter averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Batu peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 16 at about 8 (very high).
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) | 14 | 13 | 15 | 13 | 10 | 8 | 10 | 12 | 13 | 13 | 10 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 13 | Extreme |
| Mar | 15 | Extreme |
| Apr | 13 | Extreme |
| May | 10 | Extreme |
| Jun | 8 | Very high |
| Jul | 10 | Very high |
| Aug | 12 | Extreme |
| Sep | 13 | Extreme |
| Oct | 13 | Extreme |
| Nov | 10 | Extreme |
| Dec | 12 | Extreme |
Air quality in Batu 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 Batu is worst in May — around 101 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 76 | 71 | 87 | 99 | 101 | 95 | 81 | 66 | 69 | 80 | 87 | 81 |
| Level | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 76 | Unhealthy |
| Feb | 71 | Unhealthy |
| Mar | 87 | Unhealthy |
| Apr | 99 | Unhealthy |
| May | 101 | Unhealthy |
| Jun | 95 | Unhealthy |
| Jul | 81 | Unhealthy |
| Aug | 66 | Unhealthy |
| Sep | 69 | Unhealthy |
| Oct | 80 | Unhealthy |
| Nov | 87 | Unhealthy |
| Dec | 81 | Unhealthy |
Where is Batu?
Batu sits at 7.9°S, 112.5°E, 881 m above sea level, in Indonesia. The nearest listed city is Singosari, 15 km away.
Topography around Batu
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Batu.
Within 3 km, the terrain around Batu has significant variations in elevation — a maximum elevation change of 588 m around an average of 915 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,889 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,645 m.
The land around Batu is covered by trees (45%) and artificial surfaces (40%) within 3 km, trees (75%) within 16 km, and trees (49%) and cropland (21%) 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 Batu (-7.87°, 112.5283°, elevation 881 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.