Champasak weather in May

In May, Champasak sees average daytime highs of 31°C and overnight lows near 23°C, with 148 mm of rain across 21.5 wet days and about 12.7 hours of daylight. It is the 3rd-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 32°C in the first days to 30°C by the end. The sky is clear or mostly clear about 7% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 12 h 30 min at the start of May to 12 h 48 min by month's end. Set against the rest of the year, May is Champasak's 8th-clearest and 5th-windiest month. For the whole year in context, see Champasak's year-round climate.

Daytime high
31°
3rd warmest
Overnight low
23°
12th coldest
Rainfall
148 mm
21.5 wet days
Daylight
12 h 42 min
5:32 AM – 6:13 PM
Cloud cover
81%
8th clearest
Wind
5 km/h
5th windiest
Solar energy
4.93 kWh/m²
Travel score
3.1
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 32°C in the first days to 30°C by the end.

A typical May day in Champasak reaches about 31°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 34°C. Set against its neighbours, May runs about 1°C cooler than April and about 2°C warmer than June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13224
23224
33224
43224
53224
63224
73224
83224
93224
103224
113124
123124
133124
143123
153123
163123
173123
183123
193123
203123
213123
223123
233023
243023
253023
263023
273023
283023
293023
303023
313023

How May really feels in Champasak

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.

Champasak 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° / 17°61.311.26.6
Feb31° / 19°71.411.55.8
Mar32° / 22°224.711.94.5
Apr32° / 23°5710.912.33.7
May31° / 23°14821.512.73.1
Jun30° / 23°24125.712.93.1
Jul29° / 23°40128.112.83.2
Aug28° / 23°41328.612.53.1
Sep29° / 23°40627.312.13.2
Oct29° / 22°28722.711.73.7
Nov29° / 20°881211.35.1
Dec29° / 18°193.711.16.5

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 10% 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 (%)
13664
23664
33367
43169
53070
62872
72773
82575
92575
102278
112080
122080
131882
141882
151684
161585
171585
181387
191189
201189
211189
22991
23991
24991
25991
26991
27991
28892
29892
30892
31892

Chance of precipitation in May

Any precipitation

Champasak gets around 148 mm of rain over 21.5 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 69% and peaks near 83% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
148
249
350
451
553
654
756
858
959
1061
1163
1265
1367
1468
1570
1672
1773
1875
1976
2078
2179
2279
2380
2481
2581
2682
2782
2883
2983
3083
3183

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 87% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
112844
211845
310855
48875
57885
66886
75896
85887
94897
103907
113898
122908
132899
142899
1518910
1618811
1718811
1818712
1918712
2018712
2108713
2208713
2308713
2408713
2508713
2608713
2708713
2808713
2908713
3008614
3108614

Wind in May

Winds average 5 km/h in May.

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

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 30 min at the start of May to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over May. Sunrise moves from 5:38 AM to 5:30 AM, and sunset from 6:09 PM to 6:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:386:09
212.55:376:10
312.55:376:10
412.65:366:10
512.65:366:10
612.65:366:11
712.65:356:11
812.65:356:11
912.65:346:11
1012.65:346:12
1112.65:346:12
1212.65:336:12
1312.75:336:13
1412.75:336:13
1512.75:326:13
1612.75:326:13
1712.75:326:14
1812.75:326:14
1912.75:316:14
2012.75:316:15
2112.75:316:15
2212.75:316:15
2312.85:306:16
2412.85:306:16
2512.85:306:16
2612.85:306:17
2712.85:306:17
2812.85:306:17
2912.85:306:18
3012.85:306:18
3112.85:306:18

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.93 kWh/m².

For context, solar energy here swings from a low near 3.86 kWh/m² to a high of 5.8 kWh/m² in March across the year — May's 4.93 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.4Bright
45.4Bright
55.3Bright
65.3Bright
75.3Bright
85.2Bright
95.2Bright
105.1Bright
115.1Bright
125.1Bright
135.0Bright
145.0Bright
154.9Bright
164.9Bright
174.9Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in May

Hazard calendar for Champasak

In seasonPeak

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

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

Champasak's monsoon runs June–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 Champasak?

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

3.1
Sightseeing
10th-best month of the year
4.7
Beach & pool
8th-best month of the year

May is a weaker month for outdoor sightseeing in Champasak.

What to pack for Champasak in May

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

In May, Champasak sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in Champasak 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 Champasak peaks around August 14 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 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 14UV 14Dec 13UV 8
UV index (midday)Level
Jan10Very high
Feb9Very high
Mar10Extreme
Apr11Extreme
May12Extreme
Jun12Extreme
Jul13Extreme
Aug14Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Champasak 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 Champasak is worst in March — around 110 µg/m³ PM2.5 (unhealthy), about 11.5× the cleanest month (December, 10 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecModerateUnhealthyModerateGoodMar 16103 µg/m³Dec 910 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb59Unhealthy
Mar110Unhealthy
Apr50Poor
May19Moderate
Jun14Moderate
Jul14Moderate
Aug13Moderate
Sep13Moderate
Oct13Moderate
Nov10Good
Dec10Good
Location & terrain

Where is Champasak?

Champasak sits at 14.9°N, 105.9°E, 0 m above sea level, in Laos. The nearest listed city is Pakse, 27 km away.

Ban LaongamPhibun MangsahanDet UdomSekongWarin ChamrapUbon RatchathaniKantharalak

Topography around Champasak

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

Within 3 km, the terrain around Champasak has only modest variations in elevation — a maximum elevation change of 17 m around an average of 96 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,353 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,628 m.

The land around Champasak is covered by cropland (39%) and water (32%) within 3 km, trees (57%) and cropland (27%) within 16 km, and trees (65%) and cropland (24%) within 80 km.

3 km
17 m
16 km
1,353 m
80 km
1,628 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Pakse 27 km · Ban Laongam 71 km · Phibun Mangsahan 80 km · Det Udom 86 km · Sekong 104 km · Warin Chamrap 114 km · Ubon Ratchathani 117 km · Kantharalak 135 km

Laos travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / C / E / F
230 V · 50 Hz
Prices
≈ 23% of US
price level, 2025
GDP per capita
$2,325
2025
Happiness
5.5 / 10
World Happiness, 2025
Safe drinking water
35%
of population, 2024
Road deaths
17.9
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Low
EF EPI 461
Religion
Buddhist 65%none 31%other/not stated 2%Christian 2%

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 Champasak (14.892°, 105.8779°, elevation 0 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).