Muar weather in December

In December, Muar sees average daytime highs of 29°C and overnight lows near 25°C, with 239 mm of rain across 24.5 wet days and about 11.9 hours of daylight. It is the 12th-warmest and 2nd-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 2% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of December to 11 h 54 min by month's end. Set against the rest of the year, December is Muar's 11th-clearest and 2nd-windiest month. For the whole year in context, see Muar's year-round climate.

Daytime high
29°
12th warmest
Overnight low
25°
3rd coldest
Rainfall
239 mm
24.5 wet days
Daylight
11 h 54 min
7:09 AM – 7:02 PM
Cloud cover
89%
11th clearest
Wind
13 km/h
2nd windiest
Solar energy
4.48 kWh/m²
Travel score
3.5
out of 10

Muar is town in Johor and district capital of Muar District.

Founded
1885

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical December day in Muar 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, December runs on par with November and on par with January.

20°23°25°28°30°151015202531
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
312925

How December really feels in Muar

Once humidity and wind are folded in, December averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Muar weather by month

How December compares with the rest of the year at a glance. December is the 12th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 25°12116.311.94.4
Feb30° / 25°7412.611.94.5
Mar30° / 25°15022123.6
Apr30° / 26°20326123.1
May30° / 26°21326.612.13.1
Jun30° / 26°17522.712.13.5
Jul29° / 26°17522.712.13.7
Aug29° / 26°18524.212.13.6
Sep29° / 26°18023.8123.5
Oct29° / 26°22026.2123.3
Nov29° / 25°2752811.93.0
Dec29° / 25°23924.511.93.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 6% of December, with mostly cloudy or overcast conditions the remaining 93%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1694
2694
3694
4694
5694
6694
7694
8793
9793
10793
11793
12793
13793
14793
15793
16793
17694
18694
19694
20694
21793
22793
23793
24793
25892
26991
27991
28991
291090
301189
311288

Chance of precipitation in December

Any precipitation

Muar gets around 239 mm of rain over 24.5 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 79% and peaks near 89% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
189
289
388
488
587
686
786
885
985
1084
1184
1283
1382
1482
1581
1680
1780
1879
1978
2077
2176
2275
2374
2473
2572
2670
2769
2867
2966
3064
3163

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December 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%151015202531
Muggy (%)Oppressive (%)Miserable (%)
106337
206436
306535
406634
506733
606832
706931
807030
907129
1007228
1107327
1207426
1307525
1407624
1507624
1607723
1707822
1807921
1917920
2018019
2118118
2218217
2318316
2428315
2528414
2628414
2728513
2838413
2938512
3038512
3138512

Wind in December

Winds average 13 km/h in December.

Across December, daily wind ranges from about 11 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
412calm
512calm
612calm
712calm
812calm
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 54 min at the start of December to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 7:03 AM to 7:16 AM, and sunset from 6:56 PM to 7:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.97:036:56
211.97:036:57
311.97:046:57
411.97:046:57
511.97:046:58
611.97:056:58
711.97:056:58
811.97:066:59
911.97:066:59
1011.97:077:00
1111.97:077:00
1211.97:087:01
1311.97:087:01
1411.97:087:01
1511.97:097:02
1611.97:097:02
1711.97:107:03
1811.97:107:03
1911.97:117:04
2011.97:117:04
2111.97:127:05
2211.97:127:05
2311.97:137:06
2411.97:137:06
2511.97:147:07
2611.97:147:07
2711.97:157:08
2811.97:157:08
2911.97:157:08
3011.97:167:09
3111.97:167:09

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.48 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.48 kWh/m² to a high of 5.8 kWh/m² in March across the year — December's 4.48 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.6Bright
294.6Bright
304.6Bright
314.7Bright
Planning a trip in December

Hazard calendar for Muar

In seasonPeak

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

Muar 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 December a good time to visit Muar?

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

3.5
Sightseeing
6th-best month of the year
4.4
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Muar.

What to pack for Muar in December

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

In December, Muar sees daytime highs around 29°C and nights near 25°C. Pack light clothes and rain gear. About 25 days see rain.

light clothesrain gear

Sea temperature near Muar in December

The nearest coast averages about 29°C in December — 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 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 Muar in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Muar peaks around February 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 17UV 14Jul 10UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun10Extreme
Jul10Extreme
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov11Extreme
Dec11Extreme

Air quality in Muar in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Muar 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 Muar?

Muar sits at 2.0°N, 102.6°E, 6 m above sea level, in Malaysia. The nearest listed city is Bakri, 9.0 km away.

Topography around Muar

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

Within 3 km, the terrain around Muar has only modest variations in elevation — a maximum elevation change of 20 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 243 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,226 m.

The land around Muar is covered by artificial surfaces (46%) and trees (21%) within 3 km, trees (45%) and water (42%) within 16 km, and trees (52%) and water (43%) within 80 km.

3 km
20 m
16 km
243 m
80 km
1,226 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
December weather nearby: Bakri 9.0 km · Merlimau 20 km · Bukit Gambir 21 km · Gerisek 24 km · Tangkak 25 km · Pagoh 25 km · Kampung Ayer Molek 33 km · Parit Sulung 36 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 Muar (2.0442°, 102.5689°, elevation 6 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).