Ou Bei Choan weather in May

In May, Ou Bei Choan sees average daytime highs of 35°C and overnight lows near 26°C, with 133 mm of rain across 22.3 wet days and about 12.6 hours of daylight. It is the 3rd-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 36°C in the first days to 34°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 Ou Bei Choan's 8th-clearest and 9th-windiest month. For the whole year in context, see Ou Bei Choan's year-round climate.

Daytime high
35°
3rd warmest
Overnight low
26°
12th coldest
Rainfall
133 mm
22.3 wet days
Daylight
12 h 36 min
5:46 AM – 6:24 PM
Cloud cover
79%
8th clearest
Wind
8 km/h
9th windiest
Solar energy
5.57 kWh/m²
Travel score
1.7
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 36°C in the first days to 34°C by the end.

A typical May day in Ou Bei Choan reaches about 35°C in the afternoon and slips back to 26°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 38°C. Set against its neighbours, May runs about 1°C cooler than April and about 1°C warmer than June.

25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13627
23627
33627
43627
53627
63627
73627
83526
93526
103526
113526
123526
133526
143526
153526
163526
173526
183526
193526
203526
213426
223426
233426
243426
253426
263426
273426
283426
293426
303426
313426

How May really feels in Ou Bei Choan

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.

Ou Bei Choan weather by month

How May compares with the rest of the year at a glance. May is the 3rd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 21°91.811.34.6
Feb34° / 23°143.111.53.4
Mar36° / 25°428.411.92.1
Apr36° / 26°8014.512.31.6
May35° / 26°13322.312.61.7
Jun34° / 26°12722.212.82.1
Jul33° / 26°14925.112.72.3
Aug32° / 25°16525.112.52.4
Sep32° / 25°22925.112.12.4
Oct32° / 25°1621911.73.3
Nov32° / 23°345.811.44.4
Dec32° / 22°71.711.25.1

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 11% of May, with mostly cloudy or overcast conditions the remaining 81%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23763
33664
43565
53367
63268
73169
82971
92773
102575
112377
122278
132179
141981
151783
161783
171585
181486
191387
201288
211189
221090
231090
241090
25991
26991
27991
28991
29892
30892
31892

Chance of precipitation in May

Any precipitation

Ou Bei Choan gets around 133 mm of rain over 22.3 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 72% and peaks near 78% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
161
262
363
463
564
665
766
867
968
1069
1171
1272
1373
1474
1575
1676
1777
1877
1977
2078
2178
2277
2377
2477
2577
2677
2777
2877
2977
3077
3177

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 81% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
113960
203763
303664
403466
503268
603070
702872
802674
902575
1002377
1102179
1202080
1301981
1401783
1501684
1601585
1701486
1801486
1901387
2001288
2101288
2201189
2301189
2401090
2501090
260991
270991
280991
290991
300991
310991

Wind in May

Winds average 8 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 5:52 AM to 5:44 AM, and sunset from 6:21 PM to 6:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:526:21
212.55:516:21
312.55:516:21
412.55:506:21
512.55:506:22
612.55:506:22
712.55:496:22
812.65:496:22
912.65:486:23
1012.65:486:23
1112.65:486:23
1212.65:476:23
1312.65:476:24
1412.65:476:24
1512.65:466:24
1612.65:466:24
1712.65:466:25
1812.75:466:25
1912.75:466:25
2012.75:456:25
2112.75:456:26
2212.75:456:26
2312.75:456:26
2412.75:456:27
2512.75:456:27
2612.75:446:27
2712.75:446:28
2812.75:446:28
2912.75:446:28
3012.75:446:29
3112.75:446:29

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.57 kWh/m².

For context, solar energy here swings from a low near 4.58 kWh/m² to a high of 6.04 kWh/m² in April across the year — May's 5.57 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.7Bright
95.7Bright
105.7Bright
115.6Bright
125.6Bright
135.6Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in May

Hazard calendar for Ou Bei Choan

In seasonPeak

In May, Ou Bei Choan sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

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

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

Is May a good time to visit Ou Bei Choan?

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

1.7
Sightseeing
11th-best month of the year
3.8
Beach & pool
12th-best month of the year

May is a weaker month for outdoor sightseeing in Ou Bei Choan.

What to pack for Ou Bei Choan in May

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

In May, Ou Bei Choan sees daytime highs around 35°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in Ou Bei Choan in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May 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 Ou Bei Choan peaks around August 15 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 22 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 14Nov 22UV 8
UV index (midday)Level
Jan9Very high
Feb10Extreme
Mar13Extreme
Apr12Extreme
May12Extreme
Jun12Extreme
Jul13Extreme
Aug14Extreme
Sep12Extreme
Oct11Extreme
Nov8Very high
Dec8Very high

Air quality in Ou Bei Choan 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 Ou Bei Choan is worst in February — around 38 µg/m³ PM2.5 (poor), about 2.5× the cleanest month (June, 15 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateFeb 1538 µg/m³Jun 1716 µg/m³
PM2.5 (µg/m³)Level
Jan35Moderate
Feb38Poor
Mar34Moderate
Apr25Moderate
May17Moderate
Jun15Moderate
Jul17Moderate
Aug16Moderate
Sep18Moderate
Oct20Moderate
Nov16Moderate
Dec17Moderate
Location & terrain

Where is Ou Bei Choan?

Ou Bei Choan sits at 13.8°N, 102.7°E, 41 m above sea level, in Cambodia. The nearest listed city is Poipet, 23 km away.

SisophonWang Nam YenSa KaeoBattambangPhum Ânlŭng VĭlSamraong

Topography around Ou Bei Choan

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

Within 3 km, the terrain around Ou Bei Choan has only modest variations in elevation — a maximum elevation change of 18 m around an average of 39 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 165 m; within 80 km, large variations in elevation — a maximum elevation change of 835 m.

The land around Ou Bei Choan is covered by cropland (71%) within 3 km, cropland (80%) within 16 km, and cropland (67%) and trees (28%) within 80 km.

3 km
18 m
16 km
165 m
80 km
835 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Poipet 23 km · Aranyaprathet 27 km · Sisophon 33 km · Wang Nam Yen 67 km · Sa Kaeo 72 km · Battambang 90 km · Phum Ânlŭng Vĭl 94 km · Samraong 96 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 Ou Bei Choan (13.7736°, 102.7373°, elevation 41 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. 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).