Sampit weather in September

In September, Sampit sees average daytime highs of 32°C and overnight lows near 24°C, with 130 mm of rain across 13.9 wet days and about 12 hours of daylight. It is the 1st-warmest and 10th-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 11% 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 Sampit's 3rd-clearest and 2nd-windiest month. For the whole year in context, see Sampit's year-round climate.

Daytime high
32°
1st warmest
Overnight low
24°
3rd coldest
Rainfall
130 mm
13.9 wet days
Daylight
12 hours
5:23 AM – 5:22 PM
Cloud cover
73%
3rd clearest
Wind
8 km/h
2nd windiest
Solar energy
5.35 kWh/m²
Travel score
3.4
out of 10

Sampit is town in Central Kalimantan, Indonesia.

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 Sampit reaches about 32°C in the afternoon and slips back to 24°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 30°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)
13224
23224
33224
43224
53224
63224
73224
83224
93224
103224
113224
123224
133224
143224
153224
163224
173224
183224
193224
203224
213224
223224
233224
243224
253224
263224
273224
283224
293224
303224

How September really feels in Sampit

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.

Sampit weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°26127.712.12.4
Feb32° / 24°23323.912.12.5
Mar32° / 24°29128122.3
Apr32° / 24°29828.511.92.2
May32° / 24°21324.711.92.6
Jun31° / 24°15519.311.93.2
Jul31° / 24°11616.511.93.7
Aug32° / 24°9412.811.93.8
Sep32° / 24°13013.9123.4
Oct32° / 24°25421.712.12.8
Nov32° / 24°31028.212.12.2
Dec31° / 24°28628.912.12.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 73%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13268
23268
33268
43169
53070
63070
73070
83070
93070
103070
112971
122872
132872
142872
152872
162773
172773
182773
192773
202674
212674
222674
232575
242575
252476
262377
272377
282278
292179
302179

Chance of precipitation in September

Any precipitation

Sampit gets around 130 mm of rain over 13.9 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 48% and peaks near 56% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
148
248
348
447
547
646
746
845
945
1045
1144
1244
1344
1444
1544
1644
1745
1845
1946
2047
2147
2248
2349
2450
2551
2652
2753
2854
2955
3056

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 72% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
197516
287616
387616
487616
597516
697516
797516
897516
997516
1097516
1197417
1297417
1397318
1497318
1597219
1697120
1797021
1896922
1986923
2086824
2176924
2266925
2366826
2456926
2556827
2646927
2736928
2836928
2936829
3026929

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 5:29 AM to 5:17 AM, and sunset from 5:26 PM to 5:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.05:295:26
212.05:295:26
312.05:295:26
412.05:285:26
512.05:285:25
612.05:275:25
712.05:275:25
812.05:265:25
912.05:265:24
1012.05:265:24
1112.05:255:24
1212.05:255:23
1312.05:245:23
1412.05:245:23
1512.05:235:22
1612.05:235:22
1712.05:225:22
1812.05:225:22
1912.05:225:21
2012.05:215:21
2112.05:215:21
2212.05:205:20
2312.05:205:20
2412.05:195:20
2512.05:195:19
2612.05:195:19
2712.05:185:19
2812.05:185:19
2912.05:175:18
3012.05:175:18

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.35 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.44 kWh/m² to a high of 5.35 kWh/m² in September across the year — September's 5.35 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
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.2Bright
Planning a trip in September

Is September a good time to visit Sampit?

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

3.4
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 Sampit.

What to pack for Sampit in September

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

In September, Sampit sees daytime highs around 32°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 14 days see rain.

light clothesrain gearsun protection

Sea temperature near Sampit in September

The nearest coast averages about 28°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 69 km away) is warmest in April 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
Mar30Tropical
Apr30Tropical
May30Tropical
Jun29Tropical
Jul28Tropical
Aug28Tropical
Sep28Tropical
Oct29Tropical
Nov30Tropical
Dec29Tropical

UV index in Sampit 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 Sampit peaks around February 17 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 17UV 15Jul 12UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul10Extreme
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov13Extreme
Dec12Extreme

Air quality in Sampit 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 Sampit is worst in September — around 94 µg/m³ PM2.5 (unhealthy), about 9.9× the cleanest month (January, 10 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateUnhealthyModerateSep 2192 µg/m³Jan 1710 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar11Good
Apr11Good
May12Good
Jun12Good
Jul16Moderate
Aug39Poor
Sep94Unhealthy
Oct83Unhealthy
Nov19Moderate
Dec11Good
Location & terrain

Where is Sampit?

Sampit sits at 2.5°S, 112.9°E, 5 m above sea level, in Indonesia. The nearest listed city is Palangkaraya, 113 km away.

Topography around Sampit

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

Within 3 km, the terrain around Sampit has only modest variations in elevation — a maximum elevation change of 16 m around an average of 6 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 30 m; within 80 km, only modest variations in elevation — a maximum elevation change of 183 m.

The land around Sampit is covered by artificial surfaces (40%) and trees (33%) within 3 km, trees (68%) within 16 km, and trees (82%) within 80 km.

3 km
16 m
16 km
30 m
80 km
183 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetlandmangroves
September weather nearby: Palangkaraya 113 km · Pangkalanbuun 148 km · Kualakapuas 168 km · Banjarmasin 202 km · Manismata 213 km · Banjarbaru 233 km · Martapura 234 km · Amuntai 256 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 Sampit (-2.5315°, 112.9496°, elevation 5 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. 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).