Masohi weather in September

In September, Masohi sees average daytime highs of 27°C and overnight lows near 21°C, with 164 mm of rain across 18.8 wet days and about 12 hours of daylight. It is the 9th-warmest and 11th-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 7% 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 hours by month's end. Set against the rest of the year, September is Masohi's 2nd-clearest and 3rd-windiest month. For the whole year in context, see Masohi's year-round climate.

Daytime high
27°
9th warmest
Overnight low
21°
2nd coldest
Rainfall
164 mm
18.8 wet days
Daylight
12 hours
6:19 AM – 6:18 PM
Cloud cover
76%
2nd clearest
Wind
5 km/h
3rd windiest
Solar energy
4.69 kWh/m²
Travel score
4.9
out of 10

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 Masohi reaches about 27°C in the afternoon and slips back to 21°C overnight — a 6°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)
12721
22721
32721
42721
52721
62721
72721
82721
92721
102721
112721
122721
132721
142721
152721
162721
172721
182721
192721
202721
212721
222721
232721
242721
252722
262722
272722
282822
292822
302822

How September really feels in Masohi

Once humidity and wind are folded in, September averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Masohi weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 23°26128.212.23.1
Feb29° / 23°22025.312.13.1
Mar29° / 22°29828.8123.1
Apr28° / 22°29528.311.93.3
May27° / 22°26926.211.93.9
Jun27° / 22°24624.311.84.2
Jul26° / 21°17721.911.84.7
Aug26° / 21°13417.811.95.3
Sep27° / 21°16418.8124.9
Oct28° / 22°18422.212.14.3
Nov29° / 22°20224.412.13.6
Dec29° / 23°26528.912.23.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 79%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11882
21882
31882
41882
51882
61882
71981
82080
92080
102179
112179
122278
132278
142278
152278
162278
172278
182377
192377
202476
212476
222476
232377
242377
252377
262377
272377
282377
292377
302377

Chance of precipitation in September

Any precipitation

Masohi gets around 164 mm of rain over 18.8 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 63% and peaks near 68% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
159
259
359
459
560
660
760
860
960
1061
1161
1261
1362
1462
1563
1663
1763
1864
1964
2064
2165
2265
2365
2466
2566
2667
2767
2867
2967
3068

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 98% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
113861
213861
313762
423662
523662
623563
723563
823464
923464
1023365
1133265
1233265
1333166
1433067
1533067
1622969
1722870
1822870
1922771
2022771
2122672
2212673
2312574
2412574
2512574
2612475
2712475
2812475
2912475
3012475

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 54 min 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 6 minutes over September. Sunrise moves from 6:26 AM to 6:13 AM, and sunset from 6:22 PM to 6:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:266:22
211.96:256:22
311.96:256:21
411.96:246:21
511.96:246:21
612.06:246:21
712.06:236:20
812.06:236:20
912.06:226:20
1012.06:226:20
1112.06:216:19
1212.06:216:19
1312.06:206:19
1412.06:206:18
1512.06:196:18
1612.06:196:18
1712.06:196:18
1812.06:186:17
1912.06:186:17
2012.06:176:17
2112.06:176:17
2212.06:166:16
2312.06:166:16
2412.06:156:16
2512.06:156:15
2612.06:146:15
2712.06:146:15
2812.06:146:15
2912.06:136:14
3012.06:136:14

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.69 kWh/m².

For context, solar energy here swings from a low near 3.59 kWh/m² to a high of 5.05 kWh/m² in October across the year — September's 4.69 kWh/m² sits near the top of that range.

024151015202530
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.6Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
305.0Bright
Planning a trip in September

Is September a good time to visit Masohi?

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

4.9
Sightseeing
2nd-best month of the year
5.0
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Masohi for sightseeing.

What to pack for Masohi in September

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

In September, Masohi sees daytime highs around 27°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.

light clothesrain gearsun protection

Sea temperature near Masohi in September

The nearest coast averages about 27°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 13 km away) is warmest in December at about 30°C and coldest in August near 26°C.

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

24°26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan30Tropical
Feb30Tropical
Mar29Tropical
Apr30Tropical
May29Tropical
Jun28Warm
Jul27Warm
Aug26Warm
Sep27Warm
Oct28Tropical
Nov29Tropical
Dec30Tropical

UV index in Masohi 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 Masohi peaks around February 21 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 21UV 16Jul 11UV 11
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar16Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul11Extreme
Aug12Extreme
Sep14Extreme
Oct15Extreme
Nov14Extreme
Dec13Extreme
Location & terrain

Where is Masohi?

Masohi sits at 3.3°S, 129.0°E, 21 m above sea level, in Indonesia. The nearest listed city is Amahai, 7.0 km away.

SananaSorongFakfak

Topography around Masohi

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

Within 3 km, the terrain around Masohi has significant variations in elevation — a maximum elevation change of 266 m around an average of 76 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 491 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,006 m.

The land around Masohi is covered by trees (47%) and water (26%) within 3 km, water (53%) and trees (40%) within 16 km, and water (53%) and trees (46%) within 80 km.

3 km
266 m
16 km
491 m
80 km
3,006 m
treesgrasslandartificial surfaceswater
September weather nearby: Amahai 7.0 km · Ambon 98 km · Namlea 208 km · Namrole 256 km · Kawasi 257 km · Sanana 360 km · Sorong 370 km · Fakfak 372 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 Masohi (-3.2983°, 128.9688°, elevation 21 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).