Sungai Besar weather in September

In September, Sungai Besar sees average daytime highs of 31°C and overnight lows near 25°C, with 237 mm of rain across 25.3 wet days and about 12 hours of daylight. It is the 8th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 1% of the time in September, and the air most often feels miserable.

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 Sungai Besar's 9th-clearest and 4th-windiest month. For the whole year in context, see Sungai Besar's year-round climate.

Daytime high
31°
8th warmest
Overnight low
25°
4th coldest
Rainfall
237 mm
25.3 wet days
Daylight
12 hours
7:10 AM – 7:11 PM
Cloud cover
87%
9th clearest
Wind
6 km/h
4th windiest
Solar energy
5.29 kWh/m²
Travel score
2.7
out of 10

Sungai Besar is human settlement in Malaysia.

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 31°C through the month.

A typical September day in Sungai Besar reaches about 31°C in the afternoon and slips back to 25°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°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)
13125
23125
33125
43125
53125
63125
73125
83125
93125
103125
113125
123125
133125
143125
153125
163125
173125
183125
193125
203125
213125
223125
233125
243125
253125
263125
273125
283125
293125
303125

How September really feels in Sungai Besar

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.

Sungai Besar weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 25°1612211.83.3
Feb31° / 25°11418.311.93.3
Mar32° / 25°18525.3122.7
Apr32° / 26°22027.812.12.3
May32° / 26°20925.912.22.5
Jun32° / 26°15320.512.22.9
Jul31° / 25°16621.812.23.1
Aug31° / 25°1902412.12.9
Sep31° / 25°23725.3122.7
Oct31° / 25°27827.811.92.6
Nov31° / 25°32528.511.82.5
Dec30° / 25°26226.711.82.8

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 6% of September, with mostly cloudy or overcast conditions the remaining 92%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1991
21090
31090
41090
51090
61189
71189
81090
9991
10991
11991
12991
13991
14892
15892
16892
17892
18793
19793
20793
21694
22694
23595
24595
25595
26595
27595
28496
29496
30496

Chance of precipitation in September

Any precipitation

Sungai Besar gets around 237 mm of rain over 25.3 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 84% and peaks near 87% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
183
283
383
483
583
682
782
882
982
1082
1182
1282
1382
1483
1583
1683
1784
1884
1985
2085
2185
2286
2386
2486
2586
2686
2787
2887
2987
3087

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
1793
2892
3892
4892
5892
6892
7892
8892
9892
10793
11793
12793
13793
14694
15694
16694
17595
18595
19595
20595
21595
22595
23595
24595
25694
26694
27694
28694
29793
30793

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 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
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 7:14 AM to 7:06 AM, and sunset from 7:18 PM to 7:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.17:147:18
212.17:137:17
312.17:137:17
412.17:137:17
512.17:137:16
612.17:127:16
712.17:127:15
812.07:127:15
912.07:127:14
1012.07:117:14
1112.07:117:13
1212.07:117:13
1312.07:117:12
1412.07:107:12
1512.07:107:11
1612.07:107:11
1712.07:107:10
1812.07:097:10
1912.07:097:10
2012.07:097:09
2112.07:087:09
2212.07:087:08
2312.07:087:08
2412.07:087:07
2512.07:077:07
2612.07:077:06
2712.07:077:06
2812.07:077:05
2912.07:067:05
3012.07:067:05

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.29 kWh/m².

For context, solar energy here swings from a low near 4.51 kWh/m² to a high of 5.83 kWh/m² in March across the year — September's 5.29 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
Planning a trip in September

Hazard calendar for Sungai Besar

In seasonPeak

In September, Sungai Besar sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Sungai Besar sits in the Pacific typhoon belt; the season peaks July–October.

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

Is September a good time to visit Sungai Besar?

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

2.7
Sightseeing
7th-best month of the year
4.0
Beach & pool
8th-best month of the year

September is a weaker month for outdoor sightseeing in Sungai Besar.

What to pack for Sungai Besar in September

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

In September, Sungai Besar sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.

light clothesrain gearsun protection

Sea temperature near Sungai Besar 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 14 km away) is warmest in May 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
Oct30Tropical
Nov29Tropical
Dec29Tropical

UV index in Sungai Besar 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 Sungai Besar peaks around February 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 19UV 14Dec 13UV 10
UV index (midday)Level
Jan12Extreme
Feb14Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul10Extreme
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov11Extreme
Dec10Extreme

Air quality in Sungai Besar 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 Sungai Besar is worst in September — around 35 µg/m³ PM2.5 (poor), and holds fairly steady the rest of the year.

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 1735 µg/m³Dec 1125 µg/m³
PM2.5 (µg/m³)Level
Jan27Moderate
Feb28Moderate
Mar31Moderate
Apr30Moderate
May29Moderate
Jun30Moderate
Jul32Moderate
Aug32Moderate
Sep35Poor
Oct33Moderate
Nov25Moderate
Dec25Moderate
Location & terrain

Where is Sungai Besar?

Sungai Besar sits at 3.7°N, 101.0°E, 8 m above sea level, in Malaysia. The nearest listed city is Hutan Melintang, 23 km away.

Topography around Sungai Besar

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

Within 3 km, the terrain around Sungai Besar has only modest variations in elevation — a maximum elevation change of 11 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 31 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,158 m.

The land around Sungai Besar is covered by cropland (33%) and water (22%) within 3 km, water (45%) and trees (38%) within 16 km, and trees (53%) and water (40%) within 80 km.

3 km
11 m
16 km
31 m
80 km
2,158 m
treesgrasslandcroplandartificial surfaceswatermangroves
September weather nearby: Hutan Melintang 23 km · Kampung Sungai Kajang 35 km · Kampung Tanjung Karang 35 km · Cangkat Jong 38 km · Teluk Intan 39 km · Kuala Selangor 46 km · Sungkai 51 km · Batang Berjuntai 58 km

Malaysia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / G / M
230 V · 50 Hz
Prices
≈ 32% of US
price level, 2025
GDP per capita
$13,125
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
95%
of population, 2024
Homicide rate
0.7
per 100k, 2023
Road deaths
22.5
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 581
Religion
Muslim 64%Buddhist 19%Christian 9%Hindu 6%

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 Sungai Besar (3.6746°, 100.9867°, elevation 8 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).