Kep weather in May

In May, Kep sees average daytime highs of 30°C and overnight lows near 27°C, with 204 mm of rain across 26.5 wet days and about 12.5 hours of daylight. It is the 3rd-warmest and 6th-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 7% of the time in May, and the air most often feels miserable.

Daylight stretches from about 12 h 24 min at the start of May to 12 h 36 min by month's end. Set against the rest of the year, May is Kep's 7th-clearest and 6th-windiest month. For the whole year in context, see Kep's year-round climate.

Daytime high
30°
3rd warmest
Overnight low
27°
12th coldest
Rainfall
204 mm
26.5 wet days
Daylight
12 h 30 min
5:45 AM – 6:13 PM
Cloud cover
80%
7th clearest
Wind
12 km/h
6th windiest
Solar energy
5.18 kWh/m²
Travel score
2.9
out of 10

Kep is town in Cambodia.

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical May day in Kep reaches about 30°C in the afternoon and slips back to 27°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°C. Set against its neighbours, May runs on par with April and about 1°C warmer than June.

25°28°30°33°35°151015202531
Avg high (°C)Avg low (°C)
13127
23127
33127
43127
53127
63127
73127
83127
93027
103027
113027
123027
133027
143027
153027
163027
173027
183027
193027
203027
213027
223027
233027
243027
253027
263027
273027
283027
293027
303027
313027

How May really feels in Kep

Once humidity and wind are folded in, May 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 May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Kep weather by month

How May compares with the rest of the year at a glance. May is the 3rd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°245.711.55.8
Feb30° / 24°215.411.75.8
Mar30° / 26°5910.811.94.8
Apr31° / 27°9818.912.23.7
May30° / 27°20426.512.52.9
Jun29° / 26°23526.312.63.1
Jul29° / 26°2582812.63.2
Aug29° / 26°23927.312.33.3
Sep29° / 26°26026.812.13.2
Oct29° / 25°23725.811.83.4
Nov30° / 25°8212.811.54.7
Dec29° / 24°326.811.45.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 11% of May, with mostly cloudy or overcast conditions the remaining 82%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13268
23268
33169
42872
52872
62773
72773
82575
92476
102278
112179
121981
131882
141882
151684
161684
171486
181387
191288
201288
211288
221288
231189
241090
251090
261090
271090
281090
291090
301090
311090

Chance of precipitation in May

Any precipitation

Kep gets around 204 mm of rain over 26.5 wet days in May. 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 climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
177
278
378
479
579
680
781
881
982
1083
1183
1284
1385
1486
1587
1688
1788
1889
1990
2090
2190
2290
2390
2490
2591
2691
2791
2891
2991
3091
3190

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the miserable band about 98% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
1595
2595
3496
4496
5397
6397
7298
8298
9298
10298
11298
12298
13298
14298
15298
16199
17199
18199
19199
20199
21199
22199
23199
24199
25199
26199
270100
280100
290100
300100
310100

Wind in May

Winds average 12 km/h in May.

Across May, daily wind ranges from about 10 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1412calm
1512calm
1612calm
1712light breeze
1812light breeze
1912light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 24 min at the start of May to 12 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over May. Sunrise moves from 5:49 AM to 5:43 AM, and sunset from 6:11 PM to 6:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:496:11
212.45:496:11
312.45:486:11
412.45:486:11
512.45:486:11
612.45:476:12
712.45:476:12
812.45:476:12
912.45:466:12
1012.45:466:12
1112.45:466:12
1212.55:456:13
1312.55:456:13
1412.55:456:13
1512.55:456:13
1612.55:456:13
1712.55:446:14
1812.55:446:14
1912.55:446:14
2012.55:446:14
2112.55:446:14
2212.55:446:15
2312.55:446:15
2412.55:436:15
2512.55:436:15
2612.55:436:16
2712.55:436:16
2812.55:436:16
2912.65:436:16
3012.65:436:17
3112.65:436:17

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.18 kWh/m².

For context, solar energy here swings from a low near 4.39 kWh/m² to a high of 5.98 kWh/m² in March across the year — May's 5.18 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.6Bright
45.6Bright
55.5Bright
65.5Bright
75.5Bright
85.4Bright
95.4Bright
105.3Bright
115.3Bright
125.3Bright
135.2Bright
145.2Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in May

Hazard calendar for Kep

In seasonPeak

In May, Kep sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.

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

Kep's rainy season runs May–October, when most of the year's rain falls.

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

Is May a good time to visit Kep?

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

2.9
Sightseeing
12th-best month of the year
4.1
Beach & pool
8th-best month of the year

May is a weaker month for outdoor sightseeing in Kep.

What to pack for Kep in May

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

In May, Kep sees daytime highs around 30°C and nights near 27°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

Sea temperature near Kep in May

The nearest coast averages about 31°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 14 km away) 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
Jan28Warm
Feb28Tropical
Mar29Tropical
Apr30Tropical
May31Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Tropical

UV index in Kep in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Kep peaks around August 19 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 11 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 19UV 13Dec 11UV 9
UV index (midday)Level
Jan11Extreme
Feb11Extreme
Mar12Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep13Extreme
Oct10Extreme
Nov9Very high
Dec9Very high

Air quality in Kep in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Kep is worst in February — around 33 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (August, 13 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateFeb 1332 µg/m³Aug 2013 µg/m³
PM2.5 (µg/m³)Level
Jan29Moderate
Feb33Moderate
Mar28Moderate
Apr23Moderate
May17Moderate
Jun14Moderate
Jul15Moderate
Aug13Moderate
Sep14Moderate
Oct18Moderate
Nov21Moderate
Dec21Moderate
Location & terrain

Where is Kep?

Kep sits at 10.5°N, 104.3°E, 8 m above sea level, in Cambodia. The nearest listed city is Kampot, 20 km away.

Hàm NinhPhu QuocTịnh BiênÂngk TasaômPhumĭ Véal SrêTakeo

Topography around Kep

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

Within 3 km, the terrain around Kep has significant variations in elevation — a maximum elevation change of 288 m around an average of 27 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 290 m; within 80 km, large variations in elevation — a maximum elevation change of 1,080 m.

The land around Kep is covered by water (51%) and trees (30%) within 3 km, water (58%) within 16 km, and water (42%), cropland (30%) and trees (21%) within 80 km.

3 km
288 m
16 km
290 m
80 km
1,080 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
May weather nearby: Kampot 20 km · Hà Tiên 22 km · Hàm Ninh 45 km · Phu Quoc 47 km · Tịnh Biên 69 km · Ângk Tasaôm 71 km · Phumĭ Véal Srê 75 km · Takeo 76 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 Kep (10.4829°, 104.3167°, elevation 8 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).