Batang weather in September

In September, Batang sees average daytime highs of 30°C and overnight lows near 24°C, with 32 mm of rain across 5.9 wet days and about 12 hours of daylight. It is the 2nd-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 42% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Batang's 2nd-clearest and 5th-windiest month. For the whole year in context, see Batang's year-round climate.

Daytime high
30°
2nd warmest
Overnight low
24°
3rd coldest
Rainfall
32 mm
5.9 wet days
Daylight
12 hours
5:33 AM – 5:30 PM
Cloud cover
50%
2nd clearest
Wind
11 km/h
5th windiest
Solar energy
6.79 kWh/m²
Travel score
5.5
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical September day in Batang reaches about 30°C in the afternoon and slips back to 24°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 31°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13024
23024
33024
43024
53024
63024
73024
83024
93024
103024
113024
123024
133024
143024
153024
163024
173024
183025
193025
203025
213025
223025
233025
243025
253025
263025
273025
283025
293025
303025

How September really feels in Batang

Once humidity and wind are folded in, September averages 30 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Batang weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 25°44130.112.33.0
Feb28° / 25°37027.112.23.0
Mar29° / 25°32629.1123.0
Apr29° / 25°24926.111.93.2
May30° / 25°12619.111.74.1
Jun29° / 25°8513.511.64.9
Jul29° / 24°458.811.75.7
Aug29° / 24°215.511.86.0
Sep30° / 24°325.9125.5
Oct30° / 25°10813.312.14.5
Nov30° / 25°25624.412.33.2
Dec29° / 25°42029.512.42.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 40%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16733
26733
36634
46634
56535
66535
76535
86436
96436
106337
116238
126238
136139
146139
156040
165941
175941
185842
195842
205842
215743
225743
235644
245644
255545
265446
275446
285347
295248
305248

Chance of precipitation in September

Any precipitation

Batang gets around 32 mm of rain over 5.9 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 20% and peaks near 29% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
119
219
319
419
519
619
719
819
919
1018
1118
1218
1318
1418
1518
1618
1718
1819
1919
2019
2120
2220
2321
2422
2523
2624
2725
2826
2928
3029

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 61% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1234622
2234622
3234631
4235621
5235621
6235621
7235621
8235621
9236611
10236611
11236611
12236602
13236602
14236602
15236602
16236593
17236593
18136603
19136603
20136594
21136594
22136594
23135604
24135604
25135604
26134614
27134614
28033634
29032644
30031654

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 54 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over September. Sunrise moves from 5:41 AM to 5:25 AM, and sunset from 5:33 PM to 5:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:415:33
211.95:405:33
311.95:405:33
411.95:395:33
511.95:395:32
611.95:385:32
711.95:375:32
811.95:375:32
911.95:365:32
1011.95:365:32
1111.95:355:31
1211.95:355:31
1311.95:345:31
1412.05:345:31
1512.05:335:31
1612.05:335:30
1712.05:325:30
1812.05:315:30
1912.05:315:30
2012.05:305:30
2112.05:305:29
2212.05:295:29
2312.05:295:29
2412.05:285:29
2512.05:285:29
2612.05:275:29
2712.05:275:28
2812.05:265:28
2912.05:255:28
3012.15:255:28

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.79 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.94 kWh/m² to a high of 6.79 kWh/m² in September across the year — September's 6.79 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.7Intense
56.7Intense
66.7Intense
76.7Intense
86.7Intense
96.7Intense
106.8Intense
116.8Intense
126.8Intense
136.8Intense
146.8Intense
156.8Intense
166.8Intense
176.8Intense
186.8Intense
196.8Intense
206.8Intense
216.8Intense
226.8Intense
236.8Intense
246.8Intense
256.8Intense
266.8Intense
276.8Intense
286.8Intense
296.8Intense
306.8Intense
Planning a trip in September

Hazard calendar for Batang

In seasonPeak

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

Batang sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Batang'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 September a good time to visit Batang?

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

5.5
Sightseeing
3rd-best month of the year
7.5
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Batang for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Batang in September

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

In September, Batang sees daytime highs around 30°C and nights near 24°C. Pack light clothes and sun protection. About 6 days see rain.

light clothessun protection

Sea temperature near Batang in September

The nearest coast averages about 29°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 15 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
Feb28Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun29Tropical
Jul29Tropical
Aug28Tropical
Sep29Tropical
Oct29Tropical
Nov30Tropical
Dec29Tropical

UV index in Batang in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Batang peaks around March 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 14 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 highExtremeVery highExtremeMar 17UV 14Nov 14UV 8
UV index (midday)Level
Jan12Extreme
Feb11Extreme
Mar15Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul9Very high
Aug11Extreme
Sep12Extreme
Oct10Extreme
Nov7Very high
Dec12Extreme

Air quality in Batang in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Batang is worst in May — around 45 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMay 1944 µg/m³Feb 1129 µg/m³
PM2.5 (µg/m³)Level
Jan31Moderate
Feb29Moderate
Mar35Poor
Apr39Poor
May45Poor
Jun42Poor
Jul38Poor
Aug35Poor
Sep37Poor
Oct39Poor
Nov37Poor
Dec34Moderate
Location & terrain

Where is Batang?

Batang sits at 6.5°S, 110.7°E, 14 m above sea level, in Indonesia. The nearest listed city is Mlonggo, 5.0 km away.

Topography around Batang

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Batang.

Within 3 km, the terrain around Batang has only modest variations in elevation — a maximum elevation change of 49 m around an average of 10 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 448 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,562 m.

The land around Batang is covered by trees (36%), water (32%) and cropland (25%) within 3 km, water (55%) and trees (31%) within 16 km, and water (60%) within 80 km.

3 km
49 m
16 km
448 m
80 km
1,562 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Mlonggo 5.0 km · Jepara 13 km · Pecangaan 24 km · Gebog 32 km · Welahan 35 km · Baekrajan 35 km · Tayu 38 km · Kudus 38 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 Batang (-6.4846°, 110.7083°, elevation 14 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).