Gemas weather in September

In September, Gemas sees average daytime highs of 31°C and overnight lows near 24°C, with 132 mm of rain across 22.6 wet days and about 12 hours of daylight. It is the 7th-warmest and 8th-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 2% 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 Gemas's 8th-clearest and 7th-windiest month. For the whole year in context, see Gemas's year-round climate.

Daytime high
31°
7th warmest
Overnight low
24°
7th coldest
Rainfall
132 mm
22.6 wet days
Daylight
12 hours
7:03 AM – 7:04 PM
Cloud cover
84%
8th clearest
Wind
6 km/h
7th windiest
Solar energy
5.14 kWh/m²
Travel score
2.9
out of 10

Gemas 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 Gemas reaches about 31°C in the afternoon and slips back to 24°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 33°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)
13124
23124
33124
43124
53124
63124
73124
83124
93124
103124
113124
123124
133124
143124
153124
163124
173124
183124
193124
203124
213124
223124
233124
243124
253124
263124
273124
283124
293124
303124

How September really feels in Gemas

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.

Gemas weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°12316.911.93.7
Feb32° / 24°8012.711.93.4
Mar33° / 24°15121.4122.6
Apr32° / 25°18325.312.12.3
May32° / 25°16724.812.12.5
Jun32° / 25°1232112.12.9
Jul31° / 24°12221.712.13.1
Aug31° / 24°13422.412.13.0
Sep31° / 24°13222.6122.9
Oct31° / 24°17924.711.92.7
Nov31° / 24°24927.611.92.5
Dec30° / 24°21524.111.93.1

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 9% of September, with mostly cloudy or overcast conditions the remaining 89%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11288
21288
31288
41288
51288
61387
71387
81387
91387
101288
111288
121288
131288
141288
151189
161189
171189
181189
191090
201090
21991
22991
23991
24991
25892
26892
27892
28892
29892
30991

Chance of precipitation in September

Any precipitation

Gemas gets around 132 mm of rain over 22.6 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 76% and peaks near 77% on the wettest days.

0%20%40%60%80%151015202530
Rain chance (%)
176
275
375
475
575
674
774
874
975
1075
1175
1275
1375
1475
1575
1676
1776
1876
1976
2076
2176
2276
2376
2476
2576
2676
2776
2876
2977
3077

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 69% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
16832
26931
36931
47030
57030
67030
77129
87129
97129
107129
117129
127030
137030
147030
156931
166931
176832
186832
196733
206733
216634
226634
236634
246634
256634
266634
276733
286733
296832
306832

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 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
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 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 7:08 AM to 6:59 AM, and sunset from 7:11 PM to 6:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.07:087:11
212.07:087:10
312.07:077:10
412.07:077:10
512.07:077:09
612.07:067:09
712.07:067:08
812.07:067:08
912.07:067:07
1012.07:057:07
1112.07:057:07
1212.07:057:06
1312.07:047:06
1412.07:047:05
1512.07:047:05
1612.07:037:04
1712.07:037:04
1812.07:037:03
1912.07:037:03
2012.07:027:03
2112.07:027:02
2212.07:027:02
2312.07:017:01
2412.07:017:01
2512.07:017:00
2612.07:017:00
2712.07:006:59
2812.07:006:59
2912.07:006:59
3012.06:596:58

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.14 kWh/m².

For context, solar energy here swings from a low near 4.13 kWh/m² to a high of 5.44 kWh/m² in March across the year — September's 5.14 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
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.1Bright
285.1Bright
295.1Bright
305.1Bright
Planning a trip in September

Hazard calendar for Gemas

In seasonPeak

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

Gemas 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 Gemas?

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

2.9
Sightseeing
6th-best month of the year
4.3
Beach & pool
8th-best month of the year

September is a weaker month for outdoor sightseeing in Gemas.

What to pack for Gemas in September

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

In September, Gemas sees daytime highs around 31°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.

light clothesrain gearsun protection

Sea temperature near Gemas 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 57 km away) is warmest in May at about 30°C and coldest in January near 28°C.

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

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb28Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct30Tropical
Nov29Tropical
Dec29Tropical

UV index in Gemas 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 Gemas peaks around February 20 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeExtremeFeb 20UV 15Jul 12UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun10Extreme
Jul10Very high
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov11Extreme
Dec11Extreme

Air quality in Gemas 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 Gemas is worst in September — around 39 µg/m³ PM2.5 (poor), about 2.4× the cleanest month (February, 16 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateSep 1638 µg/m³Feb 816 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb16Moderate
Mar22Moderate
Apr28Moderate
May28Moderate
Jun28Moderate
Jul30Moderate
Aug34Moderate
Sep39Poor
Oct34Moderate
Nov23Moderate
Dec19Moderate
Location & terrain

Where is Gemas?

Gemas sits at 2.6°N, 102.6°E, 34 m above sea level, in Malaysia. The nearest listed city is Batu Anam, 11 km away.

Topography around Gemas

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

Within 3 km, the terrain around Gemas has only modest variations in elevation — a maximum elevation change of 69 m around an average of 40 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 221 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,226 m.

The land around Gemas is covered by trees (77%) within 3 km, trees (91%) within 16 km, and trees (85%) within 80 km.

3 km
69 m
16 km
221 m
80 km
1,226 m
treesgrasslandartificial surfaceswater
September weather nearby: Batu Anam 11 km · Rompin 18 km · Taman Pelangi 19 km · Segamat 24 km · Bahau 34 km · Tangkak 36 km · Kampung Machap Baru 38 km · Kampung Selang 39 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 Gemas (2.5832°, 102.6117°, elevation 34 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).