Sitiawan weather in December

In December, Sitiawan sees average daytime highs of 29°C and overnight lows near 25°C, with 298 mm of rain across 27.8 wet days and about 11.8 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 4% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 48 min at the start of December to 11 h 48 min by month's end. Set against the rest of the year, December is Sitiawan's 9th-clearest and 11th-windiest month. For the whole year in context, see Sitiawan's year-round climate.

Daytime high
29°
12th warmest
Overnight low
25°
2nd coldest
Rainfall
298 mm
27.8 wet days
Daylight
11 h 48 min
7:21 AM – 7:06 PM
Cloud cover
87%
9th clearest
Wind
6 km/h
11th windiest
Solar energy
4.55 kWh/m²
Travel score
3.1
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 Sitiawan 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 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)
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 Sitiawan

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.

Sitiawan 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°21025.711.83.3
Feb30° / 25°15422.111.93.3
Mar30° / 25°21327.2122.9
Apr30° / 26°23528.412.12.6
May31° / 26°2042612.22.8
Jun31° / 26°13419.912.23.4
Jul30° / 25°13620.812.23.5
Aug30° / 25°16322.412.13.3
Sep30° / 25°20924.1123.1
Oct30° / 25°28227.611.92.9
Nov29° / 25°35628.811.82.8
Dec29° / 25°29827.811.83.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 8% of December, with mostly cloudy or overcast conditions the remaining 88%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1793
2892
3892
4892
5991
6991
7991
81090
91189
101189
111189
121189
131189
141189
151189
161189
171288
181288
191288
201288
211288
221288
231288
241288
251288
261387
271486
281585
291684
301684
311783

Chance of precipitation in December

Any precipitation

Sitiawan gets around 298 mm of rain over 27.8 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 89% and peaks near 93% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
193
293
392
492
591
691
790
890
990
1090
1189
1289
1389
1489
1589
1688
1788
1888
1988
2089
2189
2289
2389
2489
2588
2688
2788
2887
2987
3087
3186

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 58% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
14852
24951
34951
45050
55149
65149
75248
85248
95347
105347
115446
125446
135545
145644
155743
165743
175842
185941
196040
206040
216139
226238
236337
246436
256634
266733
276733
286832
296931
306931
316931

Wind in December

Winds average 6 km/h in December.

Across December, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
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
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 48 min at the start of December to 11 h 48 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 7:14 AM to 7:28 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)
111.87:147:00
211.87:147:00
311.87:157:01
411.87:157:01
511.87:167:02
611.87:167:02
711.87:167:02
811.87:177:03
911.87:177:03
1011.87:187:03
1111.87:187:04
1211.87:197:04
1311.87:197:05
1411.87:207:05
1511.87:207:06
1611.87:217:06
1711.87:217:07
1811.87:227:07
1911.87:227:07
2011.87:237:08
2111.87:237:08
2211.87:247:09
2311.87:247:09
2411.87:247:10
2511.87:257:10
2611.87:257:11
2711.87:267:11
2811.87:267:12
2911.87:277:12
3011.87:277:13
3111.87:287:13

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.55 kWh/m².

For context, solar energy here swings from a low near 4.54 kWh/m² to a high of 5.82 kWh/m² in March across the year — December's 4.55 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
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
314.8Bright
Planning a trip in December

Hazard calendar for Sitiawan

In seasonPeak

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

Sitiawan 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 Sitiawan?

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

3.1
Sightseeing
6th-best month of the year
4.0
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Sitiawan.

What to pack for Sitiawan in December

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

In December, Sitiawan sees daytime highs around 29°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 28 days see rain.

light clothesrain gearsun protection

Sea temperature near Sitiawan 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 13 km away) is warmest in May at about 30°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
Feb30Tropical
Mar30Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct30Tropical
Nov29Tropical
Dec29Tropical

UV index in Sitiawan 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 Sitiawan peaks around February 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 19UV 14Jul 11UV 10
UV index (midday)Level
Jan12Extreme
Feb14Extreme
Mar13Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul10Extreme
Aug12Extreme
Sep14Extreme
Oct13Extreme
Nov11Extreme
Dec10Extreme

Air quality in Sitiawan 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 Sitiawan is worst in September — around 25 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (November, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 1325 µg/m³Nov 2115 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb19Moderate
Mar20Moderate
Apr19Moderate
May20Moderate
Jun21Moderate
Jul24Moderate
Aug23Moderate
Sep25Moderate
Oct22Moderate
Nov14Moderate
Dec16Moderate
Location & terrain

Where is Sitiawan?

Sitiawan sits at 4.2°N, 100.7°E, 9 m above sea level, in Malaysia. The nearest listed city is Seri Manjung, 4.0 km away.

Topography around Sitiawan

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

Within 3 km, the terrain around Sitiawan has only modest variations in elevation — a maximum elevation change of 21 m around an average of 10 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 375 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,873 m.

The land around Sitiawan is covered by trees (57%) and artificial surfaces (32%) within 3 km, trees (58%) and water (28%) within 16 km, and trees (46%) and water (46%) within 80 km.

3 km
21 m
16 km
375 m
80 km
1,873 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
December weather nearby: Seri Manjung 4.0 km · Lumut 8.0 km · Pantai Remis 28 km · Parit 38 km · Teluk Intan 42 km · Hutan Melintang 46 km · Batu Gajah 47 km · Kampar 51 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 Sitiawan (4.2168°, 100.6996°, 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. 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).