Batu weather in August

In August, Batu sees average daytime highs of 27°C and overnight lows near 17°C, with 37 mm of rain across 7.4 wet days and about 11.7 hours of daylight. It is the 5th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 13% of the time in August, and the air most often feels humid.

Daylight stretches from about 11 h 42 min at the start of August to 11 h 48 min by month's end. Set against the rest of the year, August is Batu's 2nd-clearest and 5th-windiest month. For the whole year in context, see Batu's year-round climate.

Daytime high
27°
5th warmest
Overnight low
17°
1st coldest
Rainfall
37 mm
7.4 wet days
Daylight
11 h 42 min
5:42 AM – 5:26 PM
Cloud cover
66%
2nd clearest
Wind
4 km/h
5th windiest
Solar energy
5.66 kWh/m²
Travel score
6.7
out of 10

Batu is city in East Java Province, Indonesia.

Density
1,114/km²
people per km²
Founded
2001

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical August day in Batu reaches about 27°C in the afternoon and slips back to 17°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 28°C. Set against its neighbours, August runs on par with July and on par with September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12717
22717
32717
42717
52717
62717
72717
82717
92717
102717
112717
122717
132717
142717
152717
162717
172717
182717
192717
202717
212717
222717
232717
242717
252717
262717
272717
282717
292717
302717
312717

Batu weather by month

How August compares with the rest of the year at a glance. August is the 5th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 20°51029.712.43.4
Feb26° / 20°49327.612.33.3
Mar27° / 20°46428.912.13.5
Apr27° / 20°29525.511.83.9
May27° / 19°13818.511.65.1
Jun27° / 18°7212.811.66.0
Jul26° / 17°519.811.66.5
Aug27° / 17°377.411.76.7
Sep28° / 18°578.1126.5
Oct28° / 19°15215.412.25.4
Nov27° / 20°32623.312.44.1
Dec27° / 20°43628.412.43.6

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 22% of August, with mostly cloudy or overcast conditions the remaining 64%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23862
33862
43862
53763
63763
73763
83862
93763
103763
113664
123565
133565
143565
153466
163466
173466
183466
193466
203466
213367
223367
233466
243466
253466
263466
273565
283565
293565
303565
313763

Chance of precipitation in August

Any precipitation

Batu gets around 37 mm of rain over 7.4 wet days in August, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 24% and peaks near 25% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
123
222
322
422
522
622
722
823
923
1023
1124
1224
1324
1424
1525
1625
1725
1825
1925
2025
2125
2225
2325
2425
2525
2625
2725
2825
2925
3025
3125

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the humid band about 54% of days. Sticky, muggy-or-worse air turns up on roughly 22% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
10225622
20225721
30235621
40235621
50235621
60235621
71235521
81245421
91245322
101245322
111245421
121245421
131245421
140245521
150245521
160245521
170245521
180245521
190245521
200255421
211255222
221255222
231255222
241255123
251245223
261245124
271245124
281245025
291235125
301235125
311235125

Wind in August

Winds average 4 km/h in August.

Across August, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 h 42 min at the start of August to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over August. Sunrise moves from 5:46 AM to 5:35 AM, and sunset from 5:26 PM to 5:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.75:465:26
211.75:465:26
311.75:465:26
411.75:465:26
511.75:455:26
611.75:455:26
711.75:455:26
811.75:455:26
911.75:445:26
1011.75:445:26
1111.75:445:26
1211.75:435:26
1311.75:435:26
1411.75:435:26
1511.75:425:26
1611.75:425:26
1711.75:415:26
1811.85:415:26
1911.85:415:26
2011.85:405:26
2111.85:405:26
2211.85:395:26
2311.85:395:26
2411.85:385:26
2511.85:385:26
2611.85:375:26
2711.85:375:26
2811.85:365:25
2911.85:365:25
3011.85:355:25
3111.85:355:25

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.66 kWh/m².

For context, solar energy here swings from a low near 4.39 kWh/m² to a high of 6.16 kWh/m² in September across the year — August's 5.66 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.4Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.6Bright
125.6Bright
135.6Bright
145.6Bright
155.6Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in August

Hazard calendar for Batu

In seasonPeak

None of Batu's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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.

Cyclone
Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is August a good time to visit Batu?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.7
Sightseeing
1st-best month of the year
6.8
Beach & pool
1st-best month of the year

August 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 August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Batu sees daytime highs around 27°C and nights near 17°C. Worth packing: light clothes and sun protection. About 7 days see rain.

light clothessun protection

Sea temperature near Batu in August

The nearest coast averages about 28°C in August — 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.

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun29Tropical
Jul28Tropical
Aug28Tropical
Sep28Tropical
Oct29Tropical
Nov30Tropical
Dec30Tropical

UV index in Batu in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 17UV 15Jun 16UV 8
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar15Extreme
Apr13Extreme
May10Extreme
Jun8Very high
Jul10Very high
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov10Extreme
Dec12Extreme

Air quality in Batu in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August 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).

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyMay 13101 µg/m³Aug 2267 µg/m³
PM2.5 (µg/m³)Level
Jan76Unhealthy
Feb71Unhealthy
Mar87Unhealthy
Apr99Unhealthy
May101Unhealthy
Jun95Unhealthy
Jul81Unhealthy
Aug66Unhealthy
Sep69Unhealthy
Oct80Unhealthy
Nov87Unhealthy
Dec81Unhealthy
Location & terrain

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.

3 km
588 m
16 km
2,889 m
80 km
3,645 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Singosari 15 km · Malang 17 km · Lawang 19 km · Prigen 23 km · Pakisaji 23 km · Kepanjen 29 km · Pandaan 30 km · Sumberpucung 32 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
Muslim 87%Protestant 8%Roman Catholic 3%Hindu 2%

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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).