Manado weather in September

In September, Manado sees average daytime highs of 29°C and overnight lows near 25°C, with 155 mm of rain across 18 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 29°C through the month. The sky is clear or mostly clear about 18% 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 Manado's 2nd-clearest and 9th-windiest month. For the whole year in context, see Manado's year-round climate.

Daytime high
29°
1st warmest
Overnight low
25°
8th coldest
Rainfall
155 mm
18 wet days
Daylight
12 hours
5:35 AM – 5:35 PM
Cloud cover
66%
2nd clearest
Wind
5 km/h
9th windiest
Solar energy
6.33 kWh/m²
Travel score
4.3
out of 10

Manado is city in North Sulawesi Province, Indonesia.

Density
2,748/km²
people per km²
Founded
1623

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 29°C through the month.

A typical September day in Manado reaches about 29°C in the afternoon and slips back to 25°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°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)
12925
22925
32925
42925
52925
62925
72925
82925
92925
102925
112925
122925
132925
142925
152925
162925
172925
182925
192925
202925
212925
222925
232925
242925
252925
262925
272925
282925
292925
302925

How September really feels in Manado

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.

Manado 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
Jan27° / 24°26828.111.93.6
Feb28° / 24°23024.3123.8
Mar28° / 25°21425.8123.9
Apr28° / 25°22826123.5
May29° / 25°26527.112.13.4
Jun29° / 25°28424.412.13.6
Jul29° / 25°21120.212.14.3
Aug29° / 25°14115.3124.8
Sep29° / 25°15518124.3
Oct29° / 25°22823.4123.7
Nov28° / 25°25028.311.93.2
Dec28° / 25°28129.611.93.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 21% of September, with mostly cloudy or overcast conditions the remaining 61%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14258
24159
34159
44159
54060
64060
73961
83862
93862
103862
113961
123862
133862
143862
153961
163961
174060
184060
193961
203961
214060
224159
234060
244060
254060
263961
273961
283763
293664
303664

Chance of precipitation in September

Any precipitation

Manado gets around 155 mm of rain over 18 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 61% and peaks near 64% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
159
259
359
460
560
660
760
860
960
1060
1160
1260
1360
1460
1560
1660
1760
1860
1960
2060
2160
2260
2361
2461
2561
2662
2762
2863
2964
3064

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 90% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
18920
28920
38920
49910
59910
69901
710891
810891
910891
1011881
1111881
1211881
1311881
1410882
1510882
1610882
1710882
189892
199892
208902
218902
227912
236922
246922
255932
265932
275932
284933
294933
304933

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 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

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 5:39 AM to 5:30 AM, and sunset from 5:41 PM to 5:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.05:395:41
212.05:395:41
312.05:395:40
412.05:395:40
512.05:385:40
612.05:385:39
712.05:385:39
812.05:375:38
912.05:375:38
1012.05:375:38
1112.05:365:37
1212.05:365:37
1312.05:365:36
1412.05:355:36
1512.05:355:36
1612.05:355:35
1712.05:345:35
1812.05:345:34
1912.05:345:34
2012.05:335:34
2112.05:335:33
2212.05:335:33
2312.05:325:32
2412.05:325:32
2512.05:325:31
2612.05:315:31
2712.05:315:31
2812.05:315:30
2912.05:315:30
3012.05:305:30

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.33 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.97 kWh/m² to a high of 6.33 kWh/m² in September across the year — September's 6.33 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.3Intense
96.3Intense
106.3Intense
116.3Intense
126.3Intense
136.3Intense
146.3Intense
156.3Intense
166.3Intense
176.3Intense
186.3Intense
196.3Intense
206.3Intense
216.3Intense
226.4Intense
236.4Intense
246.4Intense
256.4Intense
266.4Intense
276.4Intense
286.4Intense
296.3Intense
306.3Intense
Planning a trip in September

Is September a good time to visit Manado?

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

4.3
Sightseeing
2nd-best month of the year
5.6
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Manado for sightseeing.

What to pack for Manado in September

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

In September, Manado sees daytime highs around 29°C and nights near 25°C. Pack light clothes, rain gear and sun protection. About 18 days see rain.

light clothesrain gearsun protection

Sea temperature near Manado 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 16 km away) is warmest in May at about 29°C and coldest in February near 28°C.

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

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb28Tropical
Mar29Tropical
Apr29Tropical
May29Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Manado 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 Manado peaks around March 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 11UV 15Jul 13UV 11
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun12Extreme
Jul11Extreme
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov12Extreme
Dec12Extreme
Location & terrain

Where is Manado?

Manado sits at 1.5°N, 124.8°E, 10 m above sea level, in Indonesia. The nearest listed city is Tomohon, 19 km away.

TernateSofifiTobelo

Topography around Manado

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

Within 3 km, the terrain around Manado has only modest variations in elevation — a maximum elevation change of 88 m around an average of 21 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,566 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,962 m.

The land around Manado is covered by artificial surfaces (49%), trees (28%) and water (20%) within 3 km, trees (61%) and water (28%) within 16 km, and water (69%) and trees (28%) within 80 km.

3 km
88 m
16 km
1,566 m
80 km
1,962 m
treesgrasslandartificial surfaceswater
September weather nearby: Tomohon 19 km · Tondano 21 km · Bitung 31 km · Gorontalo 225 km · Tahuna 247 km · Ternate 292 km · Sofifi 312 km · Tobelo 352 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 Manado (1.4822°, 124.8489°, elevation 10 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).