Singkil weather in September

In September, Singkil sees average daytime highs of 29°C and overnight lows near 25°C, with 351 mm of rain across 23.4 wet days and about 12 hours of daylight. It is the 9th-warmest and 5th-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 1% 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 Singkil's 9th-clearest and 4th-windiest month. For the whole year in context, see Singkil's year-round climate.

Daytime high
29°
9th warmest
Overnight low
25°
5th coldest
Rainfall
351 mm
23.4 wet days
Daylight
12 hours
6:23 AM – 6:24 PM
Cloud cover
90%
9th clearest
Wind
7 km/h
4th windiest
Solar energy
5.06 kWh/m²
Travel score
3.5
out of 10

Singkil is capital of Aceh Singkil Regency, Aceh 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 29°C through the month.

A typical September day in Singkil 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 27°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 Singkil

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.

Singkil weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 25°28324.211.93.5
Feb30° / 25°23921.211.93.4
Mar30° / 25°31526.8123.1
Apr30° / 25°36926.5123.0
May30° / 26°28221.912.13.5
Jun30° / 25°21817.812.13.9
Jul29° / 25°2562012.13.9
Aug29° / 25°3262312.13.6
Sep29° / 25°35123.4123.5
Oct29° / 25°46626.411.93.3
Nov28° / 25°57127.211.93.2
Dec29° / 25°40226.911.93.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 4% of September, with mostly cloudy or overcast conditions the remaining 95%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1595
2595
3595
4595
5595
6694
7694
8694
9694
10694
11694
12694
13694
14595
15595
16595
17595
18595
19595
20595
21496
22496
23496
24397
25397
26397
27397
28496
29496
30496

Chance of precipitation in September

Any precipitation

Singkil gets around 351 mm of rain over 23.4 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 78% and peaks near 82% on the wettest days.

0%20%40%60%80%151015202530
Rain chance (%)
179
279
378
478
578
677
777
877
976
1076
1176
1276
1376
1476
1576
1676
1777
1877
1978
2078
2179
2279
2380
2480
2580
2681
2781
2881
2982
3082

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 76% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
17525
27525
37624
47624
57723
67822
77822
87921
97921
107921
117921
127921
137822
147822
157723
167624
177624
187525
197426
207426
217426
227327
237327
247327
257327
267426
277426
287525
297525
307624

Wind in September

Winds average 7 km/h in September.

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

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
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 6:27 AM to 6:19 AM, and sunset from 6:30 PM to 6:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:276:30
212.06:276:29
312.06:276:29
412.06:266:29
512.06:266:28
612.06:266:28
712.06:266:27
812.06:256:27
912.06:256:27
1012.06:256:26
1112.06:246:26
1212.06:246:25
1312.06:246:25
1412.06:236:24
1512.06:236:24
1612.06:236:24
1712.06:226:23
1812.06:226:23
1912.06:226:22
2012.06:226:22
2112.06:216:21
2212.06:216:21
2312.06:216:21
2412.06:206:20
2512.06:206:20
2612.06:206:19
2712.06:206:19
2812.06:196:18
2912.06:196:18
3012.06:196:18

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.06 kWh/m².

For context, solar energy here swings from a low near 4.16 kWh/m² to a high of 5.6 kWh/m² in February across the year — September's 5.06 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
Planning a trip in September

Hazard calendar for Singkil

In seasonPeak

In September, Singkil sits inside its cyclone season. The full year is below, with each hazard's peak months called out.

Singkil sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.

Cyclone
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Singkil?

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

3.5
Sightseeing
4th-best month of the year
4.5
Beach & pool
7th-best month of the year

September is a weaker month for outdoor sightseeing in Singkil.

What to pack for Singkil in September

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

In September, Singkil sees daytime highs around 29°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.

light clothesrain gearsun protection

Sea temperature near Singkil in September

The nearest coast averages about 30°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 20 km away) is warmest in March at about 30°C and coldest in November 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
Jan29Tropical
Feb30Tropical
Mar30Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Singkil 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 Singkil peaks around February 22 at about 14 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 22UV 14Jul 13UV 11
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar14Extreme
Apr13Extreme
May12Extreme
Jun11Extreme
Jul11Extreme
Aug12Extreme
Sep14Extreme
Oct13Extreme
Nov12Extreme
Dec12Extreme
Location & terrain

Where is Singkil?

Singkil sits at 2.3°N, 97.8°E, 5 m above sea level, in Indonesia. The nearest listed city is Subulussalam, 43 km away.

Topography around Singkil

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

Within 3 km, the terrain around Singkil has only modest variations in elevation — a maximum elevation change of 13 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 30 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,806 m.

The land around Singkil is covered by trees (43%) within 3 km, water (54%) and trees (36%) within 16 km, and water (60%) and trees (39%) within 80 km.

3 km
13 m
16 km
30 m
80 km
1,806 m
treesshrubsgrasslandartificial surfaceswatermangroves
September weather nearby: Subulussalam 43 km · Barus 74 km · Sidikalang 78 km · Paropo 104 km · Tongging 106 km · Pangururan 107 km · Gunungsitoli 113 km · Kabanjahe 119 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 Singkil (2.2874°, 97.7884°, 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).