Xam Nua weather in August

In August, Xam Nua sees average daytime highs of 27°C and overnight lows near 20°C, with 312 mm of rain across 27.4 wet days and about 12.7 hours of daylight. It is the 4th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 3% of the time in August, and the air most often feels muggy.

Daylight stretches from about 12 h 54 min at the start of August to 12 h 24 min by month's end. Set against the rest of the year, August is Xam Nua's 10th-clearest and 11th-windiest month. For the whole year in context, see Xam Nua's year-round climate.

Daytime high
27°
4th warmest
Overnight low
20°
10th coldest
Rainfall
312 mm
27.4 wet days
Daylight
12 h 42 min
5:47 AM – 6:29 PM
Cloud cover
89%
10th clearest
Wind
5 km/h
11th windiest
Solar energy
4.36 kWh/m²
Travel score
3.7
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical August day in Xam Nua reaches about 27°C in the afternoon and slips back to 20°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 30°C. Set against its neighbours, August runs on par with July and about 1°C warmer than September.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12721
22721
32721
42721
52721
62721
72721
82721
92721
102721
112721
122721
132721
142721
152721
162720
172720
182720
192720
202720
212720
222720
232720
242720
252720
262720
272720
282720
292720
302720
312720

Xam Nua weather by month

How August compares with the rest of the year at a glance. August is the 4th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 10°244.210.97.1
Feb22° / 12°173.711.37.7
Mar25° / 14°6310.211.96.9
Apr27° / 17°11317.412.55.4
May28° / 20°20923.6134.0
Jun29° / 21°21724.513.23.5
Jul28° / 21°27626.813.13.6
Aug27° / 20°31227.412.73.7
Sep26° / 19°20021.512.14.6
Oct24° / 17°9214.611.56.1
Nov22° / 14°317117.2
Dec20° / 11°183.610.87.2

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 3% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 7% of August, with mostly cloudy or overcast conditions the remaining 90%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1892
2892
3793
4793
5694
6694
7694
8694
9793
10892
11892
12991
13991
14991
15991
161090
171090
181090
191189
201189
211288
221288
231387
241387
251387
261486
271486
281486
291486
301486
311585

Chance of precipitation in August

Any precipitation

Xam Nua gets around 312 mm of rain over 27.4 wet days in August, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 88% and peaks near 92% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
192
292
392
492
592
692
792
891
991
1091
1190
1289
1389
1488
1588
1687
1787
1886
1986
2086
2185
2285
2385
2485
2585
2684
2784
2884
2984
3084
3184

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the muggy band about 80% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
107525
207525
307525
407525
507525
607525
707624
807624
907723
1007723
1107822
1207921
1308020
1408020
1508119
1608218
1718118
1818217
1918217
2018316
2118415
2218415
2318415
2418415
2518415
2618415
2718415
2818415
2918415
3018415
3118415

Wind in August

Winds average 5 km/h in August.

Across August, daily wind ranges from about 4 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
314calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 12 h 54 min at the start of August to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over August. Sunrise moves from 5:42 AM to 5:51 AM, and sunset from 6:38 PM to 6:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:426:38
212.95:426:38
312.95:426:37
412.95:436:37
512.95:436:36
612.95:446:35
712.95:446:35
812.85:446:34
912.85:456:34
1012.85:456:33
1112.85:456:32
1212.85:466:32
1312.85:466:31
1412.75:466:30
1512.75:476:30
1612.75:476:29
1712.75:476:28
1812.75:476:28
1912.75:486:27
2012.65:486:26
2112.65:486:25
2212.65:496:24
2312.65:496:24
2412.65:496:23
2512.55:496:22
2612.55:506:21
2712.55:506:20
2812.55:506:19
2912.55:506:19
3012.45:516:18
3112.45:516:17

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.36 kWh/m².

For context, solar energy here swings from a low near 3.3 kWh/m² to a high of 5.34 kWh/m² in April across the year — August's 4.36 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
314.4Bright
Planning a trip in August

Hazard calendar for Xam Nua

In seasonPeak

In August, Xam Nua sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Xam Nua's monsoon runs May–September, when most of the year's rain falls.

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

Is August a good time to visit Xam Nua?

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

3.7
Sightseeing
10th-best month of the year
3.9
Beach & pool
10th-best month of the year

August is a weaker month for outdoor sightseeing in Xam Nua.

What to pack for Xam Nua in August

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

In August, Xam Nua sees daytime highs around 27°C and nights near 20°C. Pack light clothes and rain gear. About 27 days see rain.

light clothesrain gear

UV index in Xam Nua in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Xam Nua peaks around August 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highExtremeVery highAug 12UV 14Dec 17UV 7
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar10Extreme
Apr9Very high
May11Extreme
Jun14Extreme
Jul13Extreme
Aug14Extreme
Sep10Extreme
Oct10Very high
Nov8Very high
Dec7High

Air quality in Xam Nua in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Xam Nua is worst in April — around 288 µg/m³ PM2.5 (very unhealthy), about 35.5× the cleanest month (August, 8 µg/m³).

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

0306090120150180210240270JanFebMarAprMayJunJulAugSepOctNovDecModerateUnhealthyVery unhealthyUnhealthyGoodModerateApr 15263 µg/m³Aug 128 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb28Moderate
Mar98Unhealthy
Apr288Very unhealthy
May64Unhealthy
Jun14Moderate
Jul9Good
Aug8Good
Sep11Good
Oct15Moderate
Nov15Moderate
Dec19Moderate
Location & terrain

Where is Xam Nua?

Xam Nua sits at 20.4°N, 104.0°E, 957 m above sea level, in Laos. The nearest listed city is Vieng Xai, 19 km away.

Sơn LaBản Na HỷThị Trấn Thuận ChâuÍt OngMuang PhônsavanNghĩa LộHòa Bình

Topography around Xam Nua

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

Within 3 km, the terrain around Xam Nua has significant variations in elevation — a maximum elevation change of 373 m around an average of 1,033 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,118 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,963 m.

The land around Xam Nua is covered by trees (65%) within 3 km, trees (83%) within 16 km, and trees (82%) within 80 km.

3 km
373 m
16 km
1,118 m
80 km
1,963 m
treesgrasslandcroplandartificial surfacesbare terrain
August weather nearby: Vieng Xai 19 km · Sơn La 102 km · Bản Na Hỷ 108 km · Thị Trấn Thuận Châu 119 km · Ít Ong 122 km · Muang Phônsavan 140 km · Nghĩa Lộ 140 km · Hòa Bình 142 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 Xam Nua (20.4164°, 104.045°, elevation 957 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).