Batu in Spring
In spring (September, October and November), Batu sees average daytime highs around 28°C and overnight lows near 19°C, with 534 mm of rain over about 47 wet days across the season. It is the warmest season of the year and the 3rd-wettest season.
Across spring, daytime highs hold fairly steady around 28°C. The sky is clear or mostly clear about 10% of the time across spring, and the air most often feels muggy.
Spring is Batu's 2nd-best season to visit on our travel score. For the whole year in context, see Batu's year-round climate.
- Avg daytime high
- 28°C
- warmest season of the year
- Avg overnight low
- 19°C
- Rainfall
- 534 mm
- 47 wet days
- Avg wind
- 4 km/h
- Travel score
- 5.3
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Batu in Spring
Across spring, daytime highs hold fairly steady around 28°C.
A typical spring day in Batu reaches about 28°C and drops to 19°C overnight. The warmest of the three months is October, the coolest September.
Batu weather by month
How the three spring months (September, October and November) 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 Spring
The sky is clear or mostly clear about 10% of the time across spring.
Chance of precipitation in Spring
Batu gets around 534 mm of rain over 47 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 4 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 48 min in early September to 12 h 24 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 5.8 kWh/m².
Hazard calendar for Batu
In spring, Batu overlaps its cyclone and monsoon season. The full year is below, with each hazard's peak months called out.
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 spring a good time to visit Batu?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit Batu for sightseeing.
What to pack for Batu in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Batu sees daytime highs around 28°C and nights near 19°C. Pack light clothes, rain gear and sun protection. About 47 days see rain.
Sea temperature near Batu in Spring
The nearest coast averages about 29°C across spring — 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 Spring
Clear-sky midday UV across spring 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 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 Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring 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.