Labuhan Deli weather in September

In September, Labuhan Deli sees average daytime highs of 28°C and overnight lows near 26°C, with 255 mm of rain across 28.1 wet days and about 12 hours of daylight. It is the 7th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 2% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Labuhan Deli's 9th-clearest and 12th-windiest month. For the whole year in context, see Labuhan Deli's year-round climate.

Daytime high
28°
7th warmest
Overnight low
26°
6th coldest
Rainfall
255 mm
28.1 wet days
Daylight
12 hours
6:19 AM – 6:20 PM
Cloud cover
87%
9th clearest
Wind
8 km/h
12th windiest
Solar energy
5.44 kWh/m²
Travel score
3.1
out of 10

Labuhan Deli is subdistrict in Medan City, North Sumatra, 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 28°C through the month.

A typical September day in Labuhan Deli reaches about 28°C in the afternoon and slips back to 26°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 29°C. Set against its neighbours, September runs on par with August and on par with October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12926
22926
32926
42926
52926
62926
72926
82926
92926
102926
112926
122926
132926
142926
152926
162926
172926
182826
192826
202826
212825
222825
232825
242825
252825
262825
272825
282825
292825
302825

How September really feels in Labuhan Deli

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.

Labuhan Deli weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 25°18023.811.84.2
Feb28° / 26°10718.311.94.4
Mar29° / 26°14321.2124.0
Apr29° / 26°18325.912.13.3
May29° / 26°20426.412.23.2
Jun29° / 26°1592312.23.5
Jul29° / 26°1722512.23.5
Aug29° / 26°20726.612.13.3
Sep28° / 26°25528.1123.1
Oct28° / 25°32429.511.93.2
Nov28° / 25°38529.511.83.2
Dec28° / 25°34828.111.83.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 6% of September, with mostly cloudy or overcast conditions the remaining 92%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1694
2694
3892
4892
5892
6892
7892
8892
9892
10991
11991
12991
13991
14991
15991
16991
17892
18892
19892
20892
21793
22793
23793
24793
25793
26694
27595
28595
29595
30595

Chance of precipitation in September

Any precipitation

Labuhan Deli gets around 255 mm of rain over 28.1 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 94% and peaks near 96% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
193
293
393
494
594
694
794
894
994
1094
1193
1293
1393
1492
1592
1692
1792
1892
1993
2093
2193
2293
2394
2494
2594
2695
2795
2895
2996
3096

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 59% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
15545
25545
35644
45743
55743
65743
75842
85842
95941
105941
115941
125941
135941
145941
155941
165941
175941
185941
195941
205941
215941
226040
236040
246040
256139
266139
276238
286238
296337
306337

Wind in September

Winds average 8 km/h in September, the calmest month.

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
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 06 min at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over September. Sunrise moves from 6:23 AM to 6:16 AM, and sunset from 6:27 PM to 6:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:236:27
212.16:236:27
312.16:226:27
412.16:226:26
512.16:226:26
612.16:226:25
712.16:226:25
812.06:216:24
912.06:216:24
1012.06:216:23
1112.06:206:23
1212.06:206:22
1312.06:206:22
1412.06:206:21
1512.06:196:21
1612.06:196:20
1712.06:196:20
1812.06:196:19
1912.06:186:19
2012.06:186:18
2112.06:186:18
2212.06:186:18
2312.06:176:17
2412.06:176:17
2512.06:176:16
2612.06:176:16
2712.06:166:15
2812.06:166:15
2912.06:166:14
3012.06:166:14

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.44 kWh/m².

For context, solar energy here swings from a low near 4.29 kWh/m² to a high of 5.83 kWh/m² in March across the year — September's 5.44 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.2Bright
Planning a trip in September

Hazard calendar for Labuhan Deli

In seasonPeak

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

Labuhan Deli 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 Labuhan Deli?

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

3.1
Sightseeing
12th-best month of the year
3.8
Beach & pool
10th-best month of the year

September is a weaker month for outdoor sightseeing in Labuhan Deli.

What to pack for Labuhan Deli in September

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

In September, Labuhan Deli sees daytime highs around 28°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 28 days see rain.

light clothesrain gearsun protection

Sea temperature near Labuhan Deli 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 27 km away) is warmest in June at about 30°C and coldest in January 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
Feb29Tropical
Mar30Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Labuhan Deli 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 Labuhan Deli peaks around February 21 at about 14 (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 21UV 14Jul 12UV 10
UV index (midday)Level
Jan11Extreme
Feb14Extreme
Mar14Extreme
Apr13Extreme
May11Extreme
Jun11Extreme
Jul10Extreme
Aug11Extreme
Sep13Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Labuhan Deli 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 Labuhan Deli is worst in September — around 33 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 1632 µg/m³Dec 1123 µg/m³
PM2.5 (µg/m³)Level
Jan26Moderate
Feb28Moderate
Mar32Moderate
Apr31Moderate
May30Moderate
Jun29Moderate
Jul30Moderate
Aug30Moderate
Sep33Moderate
Oct30Moderate
Nov23Moderate
Dec23Moderate
Location & terrain

Where is Labuhan Deli?

Labuhan Deli sits at 3.9°N, 98.6°E, 2 m above sea level, in Indonesia. The nearest listed city is Belawan, 13 km away.

Topography around Labuhan Deli

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

Within 3 km, the terrain around Labuhan Deli has only modest variations in elevation — a maximum elevation change of 10 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 27 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,175 m.

The land around Labuhan Deli is covered by mangroves (81%) within 3 km, water (47%), trees (21%) and mangroves (20%) within 16 km, and trees (53%) and water (36%) within 80 km.

3 km
10 m
16 km
27 m
80 km
2,175 m
treesgrasslandcroplandartificial surfaceswaterwetlandmangroves
September weather nearby: Belawan 13 km · Stabat 26 km · Medan 33 km · Sunggal 34 km · Binjai 35 km · Tanjungtiram 36 km · Percut 38 km · Deli Tua 42 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 Labuhan Deli (3.879°, 98.633°, elevation 2 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. 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).