Masamba weather in September

In September, Masamba sees average daytime highs of 27°C and overnight lows near 18°C, with 99 mm of rain across 16.4 wet days and about 12 hours of daylight. It is the 8th-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 18% of the time in September, and the air most often feels muggy.

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 Masamba's 1st-clearest and 1st-windiest month. For the whole year in context, see Masamba's year-round climate.

Daytime high
27°
8th warmest
Overnight low
18°
1st coldest
Rainfall
99 mm
16.4 wet days
Daylight
12 hours
5:53 AM – 5:53 PM
Cloud cover
65%
1st clearest
Wind
3 km/h
1st windiest
Solar energy
5.79 kWh/m²
Travel score
5.4
out of 10

Masamba is capital of North Luwu Regency, South Sulawesi Province, 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 27°C through the month.

A typical September day in Masamba reaches about 27°C in the afternoon and slips back to 18°C overnight — a 9°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, September runs about 1°C warmer than August and about 1°C cooler than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12618
22618
32618
42718
52718
62718
72718
82718
92718
102718
112718
122718
132718
142718
152718
162718
172718
182718
192718
202718
212718
222718
232718
242718
252718
262718
272718
282718
292818
302818

Masamba weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 20°28227.812.13.5
Feb28° / 20°2792512.13.6
Mar27° / 20°35528.4123.5
Apr27° / 20°36028.611.93.4
May27° / 20°27528.111.93.8
Jun26° / 19°22825.311.94.1
Jul26° / 19°16423.711.94.5
Aug26° / 18°12521.611.94.9
Sep27° / 18°9916.4125.4
Oct28° / 18°12217.212.15.0
Nov28° / 19°18821.512.14.1
Dec28° / 20°26827.412.13.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 20% of September, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13763
23961
33961
43961
53961
63961
73961
83961
93961
103961
113862
123862
133862
143862
153763
163763
173763
183862
193961
203961
213961
223961
233961
243862
253862
263664
273664
283664
293565
303466

Chance of precipitation in September

Any precipitation

Masamba gets around 99 mm of rain over 16.4 wet days in September, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 55% and peaks near 64% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
164
263
362
461
560
659
758
857
956
1055
1155
1254
1354
1453
1553
1653
1753
1853
1952
2052
2152
2252
2352
2453
2553
2653
2753
2854
2954
3054

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 52% of days. Sticky, muggy-or-worse air turns up on roughly 52% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1133561
2133561
3143659
4153757
5153757
6263755
7273853
8273853
9283951
10283951
11284050
12294049
13294149
14294148
15294148
16294148
17294148
18194149
19184149
20184249
21184249
22174250
23174151
24174151
25174052
26174052
27273952
28273853
29273853
30273754

Wind in September

Winds average 3 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 3 km/h on the calmest days to 3 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
13calm
23calm
33calm
43calm
53calm
63calm
73calm
83calm
93calm
103calm
113calm
123calm
133calm
143calm
153calm
163calm
173calm
183calm
193calm
203calm
213calm
223calm
233calm
243calm
253calm
263calm
273calm
283calm
293calm
303calm

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 6:00 AM to 5:47 AM, and sunset from 5:57 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:005:57
212.05:595:57
312.05:595:56
412.05:595:56
512.05:585:56
612.05:585:56
712.05:575:55
812.05:575:55
912.05:575:55
1012.05:565:54
1112.05:565:54
1212.05:555:54
1312.05:555:53
1412.05:545:53
1512.05:545:53
1612.05:535:53
1712.05:535:52
1812.05:535:52
1912.05:525:52
2012.05:525:51
2112.05:515:51
2212.05:515:51
2312.05:505:51
2412.05:505:50
2512.05:495:50
2612.05:495:50
2712.05:495:49
2812.05:485:49
2912.05:485:49
3012.05:475:49

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.79 kWh/m².

For context, solar energy here swings from a low near 4.2 kWh/m² to a high of 5.89 kWh/m² in October across the year — September's 5.79 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.6Bright
75.6Bright
85.6Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
Planning a trip in September

Is September a good time to visit Masamba?

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

5.4
Sightseeing
1st-best month of the year
5.4
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Masamba for sightseeing.

What to pack for Masamba in September

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

In September, Masamba sees daytime highs around 27°C and nights near 18°C. Pack rain gear. Worth having: light clothes and sun protection. About 16 days see rain.

rain gearlight clothessun protection

Sea temperature near Masamba 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 34 km away) is warmest in March at about 30°C and coldest in August near 29°C.

The water stays above 20°C all year — warm enough for a swim any month.

28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan30Tropical
Feb30Tropical
Mar30Tropical
Apr30Tropical
May30Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct30Tropical
Nov30Tropical
Dec30Tropical

UV index in Masamba in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Masamba peaks around March 13 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 13UV 16Jun 20UV 11
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar16Extreme
Apr15Extreme
May13Extreme
Jun11Extreme
Jul12Extreme
Aug13Extreme
Sep14Extreme
Oct15Extreme
Nov14Extreme
Dec14Extreme

Air quality in Masamba 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 Masamba is worst in October — around 19 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (January, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodOct 1219 µg/m³Jan 229 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar10Good
Apr11Good
May11Good
Jun10Good
Jul11Good
Aug12Good
Sep17Moderate
Oct19Moderate
Nov13Moderate
Dec10Good
Location & terrain

Where is Masamba?

Masamba sits at 2.6°S, 120.3°E, 42 m above sea level, in Indonesia. The nearest listed city is Palopo, 51 km away.

Topography around Masamba

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

Within 3 km, the terrain around Masamba has only modest variations in elevation — a maximum elevation change of 117 m around an average of 54 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,533 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,000 m.

The land around Masamba is covered by trees (52%) and cropland (23%) within 3 km, trees (80%) within 16 km, and trees (71%) and water (21%) within 80 km.

3 km
117 m
16 km
1,533 m
80 km
3,000 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
September weather nearby: Palopo 51 km · Rantepao 67 km · Poso 137 km · Polewali 147 km · Sengkang 178 km · Parepare 180 km · Bungku 183 km · Majene 186 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 Masamba (-2.5537°, 120.3279°, elevation 42 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).