Barabai weather in September

In September, Barabai sees average daytime highs of 32°C and overnight lows near 22°C, with 116 mm of rain across 14.9 wet days and about 12 hours of daylight. It is the 1st-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 12% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of September to 12 hours by month's end. Set against the rest of the year, September is Barabai's 3rd-clearest and 1st-windiest month. For the whole year in context, see Barabai's year-round climate.

Daytime high
32°
1st warmest
Overnight low
22°
3rd coldest
Rainfall
116 mm
14.9 wet days
Daylight
12 hours
6:13 AM – 6:12 PM
Cloud cover
72%
3rd clearest
Wind
4 km/h
1st windiest
Solar energy
5.45 kWh/m²
Travel score
3.5
out of 10

Barabai is district in Central Hulu Sungai Regency, South Kalimantan Province, Indonesia.

Density
1,025/km²
people per km²

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical September day in Barabai reaches about 32°C in the afternoon and slips back to 22°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 34°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)
13222
23222
33222
43222
53222
63222
73222
83222
93222
103222
113222
123222
133222
143222
153222
163222
173222
183222
193222
203222
213222
223222
233222
243222
253222
263222
273222
283222
293222
303222

How September really feels in Barabai

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.

Barabai weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°19927.112.12.9
Feb30° / 23°18123.812.12.9
Mar30° / 23°24927.5122.8
Apr30° / 23°25427.511.92.7
May31° / 23°21225.211.92.9
Jun30° / 23°16520.211.93.5
Jul30° / 22°13017.311.93.9
Aug31° / 22°961411.93.9
Sep32° / 22°11614.9123.5
Oct31° / 23°19620.712.13.1
Nov30° / 23°27627.812.12.6
Dec30° / 23°24228.712.12.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 20% of September, with mostly cloudy or overcast conditions the remaining 69%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13367
23367
33367
43367
53268
63268
73268
83268
93268
103268
113268
123367
133367
143367
153268
163367
173367
183367
193367
203268
213268
223268
233268
243169
253169
263070
272872
282773
292674
302575

Chance of precipitation in September

Any precipitation

Barabai gets around 116 mm of rain over 14.9 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 50% and peaks near 53% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
151
251
351
451
551
651
750
850
950
1050
1150
1250
1350
1450
1550
1650
1750
1850
1950
2050
2150
2250
2350
2450
2550
2650
2751
2852
2952
3053

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 68% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1228691
2228691
3228691
4228691
5328681
6328681
7428671
8427681
9427681
10527671
11526672
12526672
13625672
14625672
15625663
16625663
17625663
18524683
19524674
20524674
21424684
22424684
23424684
24325684
25325684
26325684
27224704
28224704
29224704
30224704

Wind in September

Winds average 4 km/h in September, the windiest month of the year.

Across September, 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.

0246810151015202530
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

Sunrise & sunset in September

DaylightNight

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

Days grow by about 0 minutes over September. Sunrise moves from 6:20 AM to 6:07 AM, and sunset from 6:17 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:206:17
212.06:196:16
312.06:196:16
412.06:186:16
512.06:186:16
612.06:186:15
712.06:176:15
812.06:176:15
912.06:166:14
1012.06:166:14
1112.06:156:14
1212.06:156:14
1312.06:156:13
1412.06:146:13
1512.06:146:13
1612.06:136:12
1712.06:136:12
1812.06:126:12
1912.06:126:11
2012.06:116:11
2112.06:116:11
2212.06:116:11
2312.06:106:10
2412.06:106:10
2512.06:096:10
2612.06:096:09
2712.06:086:09
2812.06:086:09
2912.06:086:09
3012.06:076:08

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.45 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.26 kWh/m² to a high of 5.45 kWh/m² in September across the year — September's 5.45 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.4Bright
Planning a trip in September

Is September a good time to visit Barabai?

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

3.5
Sightseeing
3rd-best month of the year
5.5
Beach & pool
3rd-best month of the year

September is a weaker month for outdoor sightseeing in Barabai.

What to pack for Barabai in September

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

In September, Barabai sees daytime highs around 32°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

UV index in Barabai in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Barabai peaks around February 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 10 (extreme).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 19UV 15Jul 12UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May12Extreme
Jun11Extreme
Jul10Extreme
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov12Extreme
Dec12Extreme

Air quality in Barabai 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 Barabai is worst in September — around 93 µg/m³ PM2.5 (unhealthy), about 5.3× the cleanest month (January, 18 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorUnhealthyModerateSep 2292 µg/m³Jan 1518 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb18Moderate
Mar22Moderate
Apr21Moderate
May23Moderate
Jun23Moderate
Jul30Moderate
Aug49Poor
Sep93Unhealthy
Oct87Unhealthy
Nov28Moderate
Dec18Moderate
Location & terrain

Where is Barabai?

Barabai sits at 2.6°S, 115.4°E, 16 m above sea level, in Indonesia. The nearest listed city is Amuntai, 24 km away.

Topography around Barabai

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

Within 3 km, the terrain around Barabai has only modest variations in elevation — a maximum elevation change of 19 m around an average of 15 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 556 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,962 m.

The land around Barabai is covered by trees (43%) and cropland (32%) within 3 km, trees (68%) within 16 km, and trees (80%) within 80 km.

3 km
19 m
16 km
556 m
80 km
1,962 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Amuntai 24 km · Tanjung 46 km · Martapura 109 km · Banjarbaru 113 km · Banjarmasin 120 km · Kualakapuas 120 km · Palangkaraya 168 km · Muara Teweh 190 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 Barabai (-2.5833°, 115.3833°, elevation 16 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. 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).