Kulai weather in December

In December, Kulai sees average daytime highs of 30°C and overnight lows near 23°C, with 303 mm of rain across 26.6 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 30°C through the month. The sky is clear or mostly clear about 1% 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 Kulai's 11th-clearest and 3rd-windiest month. For the whole year in context, see Kulai's year-round climate.

Daytime high
30°
11th warmest
Overnight low
23°
3rd coldest
Rainfall
303 mm
26.6 wet days
Daylight
11 h 54 min
7:05 AM – 6:59 PM
Cloud cover
91%
11th clearest
Wind
8 km/h
3rd windiest
Solar energy
3.97 kWh/m²
Travel score
3.0
out of 10

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

Founded
1890

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 30°C through the month.

A typical December day in Kulai reaches about 30°C in the afternoon and slips back to 23°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 28°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)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
202923
212923
222923
232923
242923
252923
262923
272923
282923
292923
302923
312923

How December really feels in Kulai

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.

Kulai 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
Jan30° / 23°20421.911.93.6
Feb31° / 23°13216.611.93.6
Mar31° / 24°21523.5122.9
Apr31° / 24°24227.2122.4
May31° / 24°21528.112.12.5
Jun31° / 24°17324.912.12.9
Jul30° / 24°16924.512.13.1
Aug30° / 24°18625.812.13.0
Sep30° / 24°19625.3122.9
Oct31° / 24°26627.4122.7
Nov30° / 24°32028.211.92.6
Dec30° / 23°30326.611.93.0

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 4% of December, with mostly cloudy or overcast conditions the remaining 94%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1595
2595
3595
4595
5595
6595
7694
8694
9694
10694
11694
12694
13694
14694
15694
16694
17694
18694
19595
20595
21595
22595
23595
24595
25595
26595
27595
28595
29694
30694
31694

Chance of precipitation in December

Any precipitation

Kulai gets around 303 mm of rain over 26.6 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 86% and peaks near 91% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
191
291
390
490
590
689
789
888
988
1087
1187
1287
1387
1486
1586
1686
1786
1885
1985
2085
2185
2284
2384
2483
2583
2682
2781
2881
2980
3080
3179

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 67% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
105644
205743
305743
405842
505941
605941
706040
806040
906139
1006238
1106238
1206337
1306436
1406535
1506634
1606733
1706832
1806931
1907030
2007129
2107228
2207327
2307426
2417425
2517524
2617623
2717623
2827622
2927622
3027721
3127721

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
2810calm
2910calm
3010calm
3110calm

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 6:58 AM to 7:12 AM, and sunset from 6:53 PM to 7:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:586:53
211.96:586:53
311.96:596:53
411.96:596:54
511.97:006:54
611.97:006:55
711.97:016:55
811.97:016:55
911.97:016:56
1011.97:026:56
1111.97:026:57
1211.97:036:57
1311.97:036:58
1411.97:046:58
1511.97:046:58
1611.97:056:59
1711.97:056:59
1811.97:067:00
1911.97:067:00
2011.97:067:01
2111.97:077:01
2211.97:077:02
2311.97:087:02
2411.97:087:03
2511.97:097:03
2611.97:097:04
2711.97:107:04
2811.97:107:05
2911.97:117:05
3011.97:117:05
3111.97:127:06

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.97 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.97 kWh/m² to a high of 5.21 kWh/m² in March across the year — December's 3.97 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.0Moderate
24.0Moderate
34.0Moderate
44.0Moderate
54.0Moderate
64.0Bright
74.0Bright
84.0Bright
94.0Bright
104.0Bright
114.0Bright
124.0Bright
134.0Bright
144.0Bright
154.0Moderate
164.0Moderate
174.0Moderate
184.0Moderate
194.0Moderate
204.0Moderate
214.0Moderate
224.0Moderate
234.0Moderate
244.0Moderate
254.0Moderate
264.0Bright
274.0Bright
284.0Bright
294.1Bright
304.1Bright
314.1Bright
Planning a trip in December

Is December a good time to visit Kulai?

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

3.0
Sightseeing
4th-best month of the year
4.1
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Kulai.

What to pack for Kulai in December

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

In December, Kulai sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. About 27 days see rain.

light clothesrain gear

Sea temperature near Kulai 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 40 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
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Kulai 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 Kulai peaks around February 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 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 18UV 15Jun 23UV 10
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar14Extreme
Apr13Extreme
May12Extreme
Jun10Very high
Jul10Very high
Aug12Extreme
Sep11Extreme
Oct13Extreme
Nov11Extreme
Dec11Extreme

Air quality in Kulai 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 Kulai is worst in September — around 46 µg/m³ PM2.5 (poor), about 2.2× the cleanest month (February, 21 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateSep 1945 µg/m³Feb 821 µg/m³
PM2.5 (µg/m³)Level
Jan21Moderate
Feb21Moderate
Mar26Moderate
Apr32Moderate
May35Moderate
Jun33Moderate
Jul37Poor
Aug40Poor
Sep46Poor
Oct43Poor
Nov29Moderate
Dec22Moderate
Location & terrain

Where is Kulai?

Kulai sits at 1.7°N, 103.6°E, 33 m above sea level, in Malaysia. The nearest listed city is Bandar Putra Kulai, 3.0 km away.

Topography around Kulai

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

Within 3 km, the terrain around Kulai has only modest variations in elevation — a maximum elevation change of 103 m around an average of 43 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 644 m; within 80 km, large variations in elevation — a maximum elevation change of 1,020 m.

The land around Kulai is covered by trees (48%) and artificial surfaces (41%) within 3 km, trees (79%) within 16 km, and trees (54%) and water (37%) within 80 km.

3 km
103 m
16 km
644 m
80 km
1,020 m
treesgrasslandartificial surfacesbare terrainwatermangroves
December weather nearby: Bandar Putra Kulai 3.0 km · Taman Senai 8.0 km · Kampung Sedenak 10 km · Taman Universiti 14 km · Skudai 15 km · Mukim Pulai 15 km · Kempas 16 km · Setia Tropika 18 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 Kulai (1.6561°, 103.6032°, elevation 33 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).