Jelutong weather in December

In December, Jelutong sees average daytime highs of 29°C and overnight lows near 26°C, with 167 mm of rain across 20.1 wet days and about 11.7 hours of daylight. It is the 9th-warmest and 8th-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 9% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 42 min at the start of December to 11 h 42 min by month's end. Set against the rest of the year, December is Jelutong's 5th-clearest and 1st-windiest month. For the whole year in context, see Jelutong's year-round climate.

Daytime high
29°
9th warmest
Overnight low
26°
2nd coldest
Rainfall
167 mm
20.1 wet days
Daylight
11 h 42 min
7:24 AM – 7:06 PM
Cloud cover
81%
5th clearest
Wind
10 km/h
1st windiest
Solar energy
4.57 kWh/m²
Travel score
4.0
out of 10

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 Jelutong reaches about 29°C in the afternoon and slips back to 26°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°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)
12926
22926
32926
42926
52926
62926
72926
82926
92926
102926
112926
122926
132926
142926
152926
162926
172926
182926
192926
202926
212926
222926
232926
242926
252926
262926
272926
282925
292925
302925
312925

How December really feels in Jelutong

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.

Jelutong weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 26°971611.74.4
Feb30° / 26°8815.611.84.2
Mar30° / 26°16122.2123.5
Apr30° / 26°20427.612.12.8
May30° / 27°23126.312.23.0
Jun30° / 27°16620.612.33.5
Jul30° / 26°17321.112.33.6
Aug29° / 26°21723.512.23.4
Sep29° / 26°24225.6123.2
Oct29° / 26°3342911.93.0
Nov29° / 26°2922711.83.1
Dec29° / 26°16720.111.74.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 9% of December, with mostly cloudy or overcast conditions the remaining 82%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11486
21486
31486
41585
51585
61585
71585
81783
91783
101783
111783
121783
131684
141783
151882
161882
171882
181882
191882
201882
211981
221882
232080
242080
252080
262080
272179
282278
292377
302476
312575

Chance of precipitation in December

Any precipitation

Jelutong gets around 167 mm of rain over 20.1 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 65% and peaks near 81% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
181
280
379
478
576
675
774
873
972
1071
1170
1269
1368
1467
1565
1664
1763
1862
1961
2060
2159
2258
2357
2456
2556
2655
2755
2854
2954
3054
3154

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 74% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
116237
216336
316435
416633
516732
616831
716930
817029
917128
1017227
1117326
1217326
1317425
1417524
1517623
1627523
1727622
1827622
1927721
2027820
2137720
2237819
2337918
2437918
2538017
2648016
2748016
2848016
2948016
3048115
3158015

Wind in December

Winds average 10 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 9 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
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 42 min at the start of December to 11 h 42 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 7:17 AM to 7:31 AM, and sunset from 7:00 PM to 7:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.77:177:00
211.77:187:00
311.77:187:00
411.77:197:01
511.77:197:01
611.77:197:01
711.77:207:02
811.77:207:02
911.77:217:03
1011.77:217:03
1111.77:227:03
1211.77:227:04
1311.77:237:04
1411.77:237:05
1511.77:247:05
1611.77:247:06
1711.77:257:06
1811.77:257:06
1911.77:267:07
2011.77:267:07
2111.77:277:08
2211.77:277:08
2311.77:287:09
2411.77:287:09
2511.77:287:10
2611.77:297:10
2711.77:297:11
2811.77:307:11
2911.77:307:12
3011.77:317:12
3111.77:317:13

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.57 kWh/m².

For context, solar energy here swings from a low near 4.45 kWh/m² to a high of 5.88 kWh/m² in March across the year — December's 4.57 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
314.8Bright
Planning a trip in December

Hazard calendar for Jelutong

In seasonPeak

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

Jelutong 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 Jelutong?

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

4.0
Sightseeing
3rd-best month of the year
5.2
Beach & pool
3rd-best month of the year

December is a reasonable time to visit Jelutong for sightseeing.

What to pack for Jelutong in December

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

In December, Jelutong sees daytime highs around 29°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

Sea temperature near Jelutong 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 22 km away) is warmest in June at about 31°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
Jun31Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Jelutong in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Jelutong peaks around February 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 16 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 18UV 14Jul 16UV 10
UV index (midday)Level
Jan12Extreme
Feb14Extreme
Mar13Extreme
Apr13Extreme
May10Extreme
Jun11Extreme
Jul10Very high
Aug11Extreme
Sep13Extreme
Oct12Extreme
Nov11Extreme
Dec10Extreme

Air quality in Jelutong 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 Jelutong is worst in March — around 31 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1631 µg/m³Nov 2026 µg/m³
PM2.5 (µg/m³)Level
Jan28Moderate
Feb29Moderate
Mar31Moderate
Apr28Moderate
May27Moderate
Jun28Moderate
Jul31Moderate
Aug29Moderate
Sep30Moderate
Oct30Moderate
Nov26Moderate
Dec27Moderate
Location & terrain

Where is Jelutong?

Jelutong sits at 5.4°N, 100.3°E, 4 m above sea level, in Malaysia. The nearest listed city is Kampung Sungai Glugur, 2.0 km away.

Topography around Jelutong

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

Within 3 km, the terrain around Jelutong has significant variations in elevation — a maximum elevation change of 299 m around an average of 15 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 842 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,832 m.

The land around Jelutong is covered by artificial surfaces (46%) and water (35%) within 3 km, water (43%) and trees (28%) within 16 km, and water (46%) and trees (41%) within 80 km.

3 km
299 m
16 km
842 m
80 km
1,832 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
December weather nearby: Kampung Sungai Glugur 2.0 km · Glugor 2.0 km · George Town 3.0 km · Ayer Itam 5.0 km · Paya Terubong 5.0 km · Butterworth 5.0 km · Perai 7.0 km · Relau 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 Jelutong (5.39°, 100.3188°, elevation 4 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).