Sihanoukville weather in April

In April, Sihanoukville sees average daytime highs of 29°C and overnight lows near 27°C, with 115 mm of rain across 19 wet days and about 12.2 hours of daylight. It is the 1st-warmest and 7th-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 30% of the time in April, and the air most often feels miserable.

Daylight stretches from about 12 h 06 min at the start of April to 12 h 24 min by month's end. Set against the rest of the year, April is Sihanoukville's 5th-clearest and 11th-windiest month. For the whole year in context, see Sihanoukville's year-round climate.

Daytime high
29°
1st warmest
Overnight low
27°
12th coldest
Rainfall
115 mm
19 wet days
Daylight
12 h 12 min
5:59 AM – 6:13 PM
Cloud cover
61%
5th clearest
Wind
10 km/h
11th windiest
Solar energy
6.23 kWh/m²
Travel score
4.2
out of 10

Sihanoukville is city in Preah Sihanouk Province, Cambodia.

Density
913/km²
people per km²
Founded
1964

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

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

A typical April day in Sihanoukville reaches about 29°C in the afternoon and slips back to 27°C overnight — a 2°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, April runs on par with March and on par with May.

25°28°30°33°35°151015202530
Avg high (°C)Avg low (°C)
12927
22927
32927
42927
52927
62927
72927
82927
92927
102927
112927
122927
132927
142927
152927
163027
173027
183027
193027
203027
213027
223027
233027
243027
253027
263027
273027
283027
293027
303027

How April really feels in Sihanoukville

Once humidity and wind are folded in, April averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Sihanoukville weather by month

How April compares with the rest of the year at a glance. April is the 1st-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 26°379.811.46.4
Feb28° / 26°308.211.66.3
Mar29° / 26°6513.511.95.3
Apr29° / 27°1151912.24.2
May29° / 27°37827.912.53.1
Jun29° / 27°48927.712.63.1
Jul28° / 26°55829.412.63.1
Aug28° / 26°55628.912.33.3
Sep28° / 26°55428.412.13.4
Oct28° / 26°34327.111.83.6
Nov29° / 26°10415.411.54.8
Dec29° / 26°449.311.45.8

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 17% of April, with mostly cloudy or overcast conditions the remaining 53%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15842
25743
35743
45644
55446
65347
75347
85248
95248
105248
115050
125050
135050
145050
154852
164852
174852
184753
194555
204456
214456
224159
234159
244060
253961
263763
273664
283664
293466
303268

Chance of precipitation in April

Any precipitation

Sihanoukville gets around 115 mm of rain over 19 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 63% and peaks near 79% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
152
253
353
453
554
654
755
855
956
1056
1157
1257
1358
1459
1560
1661
1762
1864
1965
2067
2168
2269
2371
2472
2574
2675
2776
2877
2978
3079

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the miserable band about 69% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
115643
215445
315148
415050
514851
614653
714455
804258
904060
1003862
1103664
1203466
1303268
1403169
1502971
1602773
1702674
1802575
1902377
2002278
2102179
2202080
2301882
2401783
2501684
2601585
2701486
2801387
2901288
3001189

Wind in April

Winds average 10 km/h in April.

Across April, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2811calm
2911calm
3011calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 06 min at the start of April to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over April. Sunrise moves from 6:08 AM to 5:52 AM, and sunset from 6:13 PM to 6:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:086:13
212.16:076:13
312.16:076:13
412.16:066:13
512.16:056:13
612.16:056:13
712.16:046:13
812.26:046:13
912.26:036:13
1012.26:026:13
1112.26:026:13
1212.26:016:13
1312.26:016:13
1412.26:006:13
1512.26:006:13
1612.25:596:13
1712.25:596:13
1812.35:586:13
1912.35:576:13
2012.35:576:13
2112.35:566:13
2212.35:566:13
2312.35:556:13
2412.35:556:14
2512.35:556:14
2612.35:546:14
2712.35:546:14
2812.35:536:14
2912.45:536:14
3012.45:526:14

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 6.23 kWh/m².

For context, solar energy here swings from a low near 4.56 kWh/m² to a high of 6.26 kWh/m² in March across the year — April's 6.23 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.3Intense
36.3Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.3Intense
96.3Intense
106.3Intense
116.3Intense
126.3Intense
136.3Intense
146.3Intense
156.3Intense
166.3Intense
176.3Intense
186.3Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.1Intense
256.1Intense
266.1Intense
276.0Intense
286.0Intense
296.0Bright
305.9Bright
Planning a trip in April

Hazard calendar for Sihanoukville

In seasonPeak

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

Sihanoukville sits in the Pacific typhoon belt; the season peaks July–October.

Sihanoukville's monsoon runs May–October, when most of the year's rain falls.

Pacific typhoon
Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is April a good time to visit Sihanoukville?

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

4.2
Sightseeing
6th-best month of the year
5.5
Beach & pool
6th-best month of the year

April is a reasonable time to visit Sihanoukville for sightseeing.

What to pack for Sihanoukville in April

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

In April, Sihanoukville sees daytime highs around 29°C and nights near 27°C. Pack light clothes, rain gear and sun protection. About 19 days see rain.

light clothesrain gearsun protection

Sea temperature near Sihanoukville in April

The nearest coast averages about 30°C in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in May at about 31°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
May31Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Sihanoukville in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sihanoukville peaks around August 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 12 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highAug 18UV 13Dec 12UV 9
UV index (midday)Level
Jan10Extreme
Feb11Extreme
Mar12Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep13Extreme
Oct11Extreme
Nov9Very high
Dec9Very high

Air quality in Sihanoukville in April

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Sihanoukville is worst in February — around 24 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (September, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateGoodModerateFeb 1423 µg/m³Sep 2210 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb24Moderate
Mar19Moderate
Apr17Moderate
May12Moderate
Jun12Good
Jul14Moderate
Aug11Good
Sep10Good
Oct11Good
Nov12Good
Dec15Moderate
Location & terrain

Where is Sihanoukville?

Sihanoukville sits at 10.6°N, 103.5°E, 6 m above sea level, in Cambodia. The nearest listed city is Phu Quoc, 65 km away.

Phu QuocKampotHàm NinhKepHà TiênSmach Mean CheyKoh KongÂngk Tasaôm

Topography around Sihanoukville

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

Within 3 km, the terrain around Sihanoukville has only modest variations in elevation — a maximum elevation change of 124 m around an average of 21 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 288 m; within 80 km, large variations in elevation — a maximum elevation change of 1,064 m.

The land around Sihanoukville is covered by artificial surfaces (36%) and water (28%) within 3 km, water (62%) and trees (20%) within 16 km, and water (63%) and trees (26%) within 80 km.

3 km
124 m
16 km
288 m
80 km
1,064 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
April weather nearby: Phu Quoc 65 km · Kampot 71 km · Hàm Ninh 74 km · Kep 87 km · Hà Tiên 108 km · Smach Mean Chey 117 km · Koh Kong 127 km · Ângk Tasaôm 133 km

Cambodia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / C / G
230 V · 50 Hz
Prices
≈ 34% of US
price level, 2025
GDP per capita
$2,872
2025
Happiness
4.5 / 10
World Happiness, 2025
Safe drinking water
30%
of population, 2024
Homicide rate
1.8
per 100k, 2011
Road deaths
19.6
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Very low
EF EPI 390
Religion
Buddhist 97%Muslim 2%other 1%Christian 0%

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 Sihanoukville (10.6093°, 103.5296°, 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).