Stung Treng weather in May

In May, Stung Treng sees average daytime highs of 33°C and overnight lows near 26°C, with 215 mm of rain across 24.9 wet days and about 12.6 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 35°C in the first days to 32°C by the end. The sky is clear or mostly clear about 8% of the time in May, and the air most often feels miserable.

Daylight stretches from about 12 h 30 min at the start of May to 12 h 42 min by month's end. Set against the rest of the year, May is Stung Treng's 8th-clearest and 10th-windiest month. For the whole year in context, see Stung Treng's year-round climate.

Daytime high
33°
4th warmest
Overnight low
26°
11th coldest
Rainfall
215 mm
24.9 wet days
Daylight
12 h 36 min
5:34 AM – 6:11 PM
Cloud cover
79%
8th clearest
Wind
6 km/h
10th windiest
Solar energy
5.3 kWh/m²
Travel score
2.1
out of 10

Stung Treng is capital of the same named Cambodian province.

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 35°C in the first days to 32°C by the end.

A typical May day in Stung Treng reaches about 33°C in the afternoon and slips back to 26°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 36°C. Set against its neighbours, May runs about 2°C cooler than April and about 1°C warmer than June.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13526
23526
33526
43426
53426
63426
73426
83426
93426
103426
113426
123426
133426
143326
153326
163326
173326
183326
193326
203326
213326
223326
233326
243326
253326
263326
273326
283326
293326
303326
313226

How May really feels in Stung Treng

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
31 feel dangerously hot (≥ 39°C)
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.

Stung Treng weather by month

How May compares with the rest of the year at a glance. May is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 22°50.811.34.4
Feb35° / 24°61.511.53.3
Mar36° / 26°446.211.92.3
Apr35° / 26°981412.32.1
May33° / 26°21524.912.62.1
Jun32° / 25°24525.712.82.4
Jul31° / 25°29327.712.72.5
Aug31° / 25°30828.212.42.5
Sep31° / 25°31927.912.12.5
Oct31° / 24°19120.611.73.3
Nov32° / 23°668.111.44.4
Dec32° / 22°162.411.24.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 12% of May, with mostly cloudy or overcast conditions the remaining 80%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23862
33664
43565
53367
63367
73070
83070
92872
102773
112476
122377
132278
142080
151981
161882
171684
181486
191387
201387
211288
221189
231189
241189
251189
261189
271189
281189
291090
301090
311090

Chance of precipitation in May

Any precipitation

Stung Treng gets around 215 mm of rain over 24.9 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 79% and peaks near 86% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
164
266
368
469
571
672
773
874
975
1076
1177
1278
1378
1479
1580
1681
1782
1883
1984
2084
2185
2285
2386
2486
2586
2686
2786
2886
2986
3086
3186

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 91% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
152570
242373
332176
432077
521880
621682
711584
811386
911287
1011188
1111089
121891
131792
141792
151693
161594
171495
181396
191396
201297
211297
220298
230199
240199
250199
260199
270199
280199
2900100
3000100
3100100

Wind in May

Winds average 6 km/h in May.

Across May, daily wind ranges from about 6 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
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 30 min at the start of May to 12 h 42 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 5:39 AM to 5:32 AM, and sunset from 6:08 PM to 6:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:396:08
212.55:396:08
312.55:386:08
412.55:386:08
512.55:376:08
612.55:376:09
712.55:376:09
812.55:366:09
912.65:366:09
1012.65:356:10
1112.65:356:10
1212.65:356:10
1312.65:346:10
1412.65:346:11
1512.65:346:11
1612.65:346:11
1712.65:336:11
1812.65:336:12
1912.65:336:12
2012.75:336:12
2112.75:336:12
2212.75:326:13
2312.75:326:13
2412.75:326:13
2512.75:326:14
2612.75:326:14
2712.75:326:14
2812.75:326:15
2912.75:326:15
3012.75:326:15
3112.75:326:15

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.3 kWh/m².

For context, solar energy here swings from a low near 4.28 kWh/m² to a high of 6.11 kWh/m² in March across the year — May's 5.3 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.7Bright
45.7Bright
55.7Bright
65.6Bright
75.6Bright
85.5Bright
95.5Bright
105.5Bright
115.4Bright
125.4Bright
135.3Bright
145.3Bright
155.3Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.1Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in May

Hazard calendar for Stung Treng

In seasonPeak

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

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

Stung Treng'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 May a good time to visit Stung Treng?

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

2.1
Sightseeing
11th-best month of the year
4.0
Beach & pool
8th-best month of the year

May is a weaker month for outdoor sightseeing in Stung Treng.

What to pack for Stung Treng in May

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

In May, Stung Treng sees daytime highs around 33°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.

light clothesrain gearsun protection

UV index in Stung Treng 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 Stung Treng peaks around August 15 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 11 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 15UV 14Dec 11UV 8
UV index (midday)Level
Jan10Very high
Feb11Extreme
Mar11Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Stung Treng 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 Stung Treng is worst in March — around 88 µg/m³ PM2.5 (unhealthy), about 11.9× the cleanest month (November, 7 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyModerateGoodMar 1087 µg/m³Nov 178 µg/m³
PM2.5 (µg/m³)Level
Jan42Poor
Feb85Unhealthy
Mar88Unhealthy
Apr42Poor
May18Moderate
Jun14Moderate
Jul15Moderate
Aug13Moderate
Sep12Good
Oct11Good
Nov7Good
Dec10Good
Location & terrain

Where is Stung Treng?

Stung Treng sits at 13.5°N, 106.0°E, 55 m above sea level, in Cambodia. The nearest listed city is Lumphat, 109 km away.

LumphatTbeng MeancheyBanlungKratiePreaek PrasabKampong ThomChampasakPhumĭ Tnaôt

Topography around Stung Treng

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

Within 3 km, the terrain around Stung Treng has only modest variations in elevation — a maximum elevation change of 45 m around an average of 56 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 119 m; within 80 km, large variations in elevation — a maximum elevation change of 639 m.

The land around Stung Treng is covered by grassland (30%), water (26%) and trees (25%) within 3 km, trees (39%) and grassland (37%) within 16 km, and trees (71%) within 80 km.

3 km
45 m
16 km
119 m
80 km
639 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Lumphat 109 km · Tbeng Meanchey 111 km · Banlung 113 km · Kratie 116 km · Preaek Prasab 131 km · Kampong Thom 148 km · Champasak 152 km · Phumĭ Tnaôt 165 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 Stung Treng (13.5259°, 105.9683°, elevation 55 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). 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).