Masai weather in December

In December, Masai sees average daytime highs of 29°C and overnight lows near 25°C, with 327 mm of rain across 27.4 wet days and about 11.9 hours of daylight. It is the 11th-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 1% of the time in December, and the air most often feels miserable.

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 Masai's 11th-clearest and 3rd-windiest month. For the whole year in context, see Masai's year-round climate.

Daytime high
29°
11th warmest
Overnight low
25°
3rd coldest
Rainfall
327 mm
27.4 wet days
Daylight
11 h 54 min
7:03 AM – 6:58 PM
Cloud cover
90%
11th clearest
Wind
11 km/h
3rd windiest
Solar energy
4.06 kWh/m²
Travel score
3.1
out of 10

Masai is suburb in Johor Bahru, Johor, Malaysia.

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 Masai reaches about 29°C in the afternoon and slips back to 25°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 31°C. Set against its neighbours, December runs on par with November and on par with January.

20°25°30°35°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 Masai

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.

Masai weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 25°22021.211.93.9
Feb30° / 25°12216.2124.0
Mar30° / 25°19823123.3
Apr31° / 25°23327.3122.7
May31° / 26°22028.312.12.7
Jun30° / 26°18324.612.13.1
Jul30° / 25°16823.712.13.4
Aug30° / 25°17024.5123.3
Sep30° / 25°17723.7123.3
Oct30° / 25°24126.7123.0
Nov30° / 25°33828.311.92.7
Dec29° / 25°32727.411.93.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% 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
7793
8793
9793
10793
11793
12793
13793
14793
15793
16793
17793
18793
19793
20793
21793
22694
23694
24694
25694
26694
27694
28694
29793
30892
31892

Chance of precipitation in December

Any precipitation

Masai gets around 327 mm of rain over 27.4 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 88% and peaks near 93% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
193
293
393
492
592
692
791
891
990
1090
1190
1290
1389
1489
1589
1689
1788
1888
1988
2087
2187
2287
2386
2485
2584
2684
2783
2882
2981
3080
3179

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the miserable band about 52% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
103466
203466
303565
403664
503763
603862
703862
803961
903961
1004060
1104159
1204258
1304357
1404456
1504555
1604654
1704753
1804951
1905050
2005248
2105347
2205545
2305644
2405842
2505941
2606040
2716039
2816138
2916138
3016237
3116336

Wind in December

Winds average 11 km/h in December.

Across December, daily wind ranges from about 9 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
19calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1712calm
1812calm
1912calm
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light 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 6:57 AM to 7:10 AM, and sunset from 6:52 PM to 7:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:576:52
211.96:576:52
311.96:576:53
411.96:586:53
511.96:586:53
611.96:596:54
711.96:596:54
811.97:006:55
911.97:006:55
1011.97:006:55
1111.97:016:56
1211.97:016:56
1311.97:026:57
1411.97:026:57
1511.97:036:58
1611.97:036:58
1711.97:046:59
1811.97:046:59
1911.97:056:59
2011.97:057:00
2111.97:067:00
2211.97:067:01
2311.97:077:01
2411.97:077:02
2511.97:077:02
2611.97:087:03
2711.97:087:03
2811.97:097:04
2911.97:097:04
3011.97:107:05
3111.97:107:05

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.06 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.06 kWh/m² to a high of 5.4 kWh/m² in March across the year — December's 4.06 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.1Bright
54.1Bright
64.1Bright
74.1Bright
84.1Bright
94.1Bright
104.1Bright
114.1Bright
124.1Bright
134.1Bright
144.1Bright
154.1Bright
164.1Bright
174.1Bright
184.1Bright
194.1Bright
204.1Bright
214.1Bright
224.1Bright
234.1Bright
244.1Bright
254.1Bright
264.1Bright
274.1Bright
284.2Bright
294.2Bright
304.2Bright
314.2Bright
Planning a trip in December

Is December a good time to visit Masai?

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

3.1
Sightseeing
7th-best month of the year
4.1
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Masai.

What to pack for Masai in December

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

In December, Masai sees daytime highs around 29°C and nights near 25°C. Pack light clothes and rain gear. About 27 days see rain.

light clothesrain gear

Sea temperature near Masai in December

The nearest coast averages about 28°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 30 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
Jan28Warm
Feb28Warm
Mar29Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Tropical

UV index in Masai 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 Masai peaks around February 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 19UV 15Jul 10UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun10Very high
Jul10Very high
Aug12Extreme
Sep11Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Masai 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 Masai is worst in October — around 33 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (January, 14 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateOct 933 µg/m³Jan 2214 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb14Moderate
Mar15Moderate
Apr21Moderate
May25Moderate
Jun25Moderate
Jul25Moderate
Aug27Moderate
Sep33Moderate
Oct33Moderate
Nov22Moderate
Dec16Moderate
Location & terrain

Where is Masai?

Masai sits at 1.5°N, 103.9°E, 9 m above sea level, in Malaysia. The nearest listed city is Bandar Seri Alam, 2.0 km away.

Topography around Masai

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

Within 3 km, the terrain around Masai has only modest variations in elevation — a maximum elevation change of 90 m around an average of 22 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 205 m; within 80 km, large variations in elevation — a maximum elevation change of 1,020 m.

The land around Masai is covered by artificial surfaces (46%) and trees (32%) within 3 km, trees (40%) and artificial surfaces (29%) within 16 km, and water (49%) and trees (40%) within 80 km.

3 km
90 m
16 km
205 m
80 km
1,020 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
December weather nearby: Bandar Seri Alam 2.0 km · Kampung Pasir Gudang Baru 2.0 km · Pasir Gudang 4.0 km · Taman Scientex 5.0 km · Taman Permas Jaya 7.0 km · Sembawang Estate 7.0 km · Pelentong 7.0 km · Sungai Simpang 8.0 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 Masai (1.4907°, 103.8788°, elevation 9 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. 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).