Muang Sing weather in September

In September, Muang Sing sees average daytime highs of 28°C and overnight lows near 21°C, with 206 mm of rain across 23.4 wet days and about 12.1 hours of daylight. It is the 7th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 11% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 24 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Muang Sing's 9th-clearest and 11th-windiest month. For the whole year in context, see Muang Sing's year-round climate.

Daytime high
28°
7th warmest
Overnight low
21°
9th coldest
Rainfall
206 mm
23.4 wet days
Daylight
12 h 06 min
6:06 AM – 6:13 PM
Cloud cover
78%
9th clearest
Wind
4 km/h
11th windiest
Solar energy
4.3 kWh/m²
Travel score
3.8
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical September day in Muang Sing reaches about 28°C in the afternoon and slips back to 21°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 31°C. Set against its neighbours, September runs on par with August and about 1°C warmer than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12922
22922
32922
42922
52922
62922
72922
82922
92922
102922
112921
122921
132921
142921
152821
162821
172821
182821
192821
202821
212821
222821
232821
242821
252821
262821
272821
282821
292821
302821

How September really feels in Muang Sing

Once humidity and wind are folded in, September averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Muang Sing weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan24° / 12°355.310.98.1
Feb27° / 13°254.111.37.9
Mar29° / 15°677.911.96.1
Apr30° / 19°15014.512.54.5
May30° / 21°23122.3133.6
Jun29° / 22°24226.113.33.0
Jul29° / 22°31928.313.23.1
Aug29° / 22°31528.312.73.1
Sep28° / 21°20623.412.13.8
Oct27° / 19°12017.111.55.4
Nov25° / 16°567.7117.3
Dec23° / 13°395.510.77.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 78%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11387
21387
31486
41585
51585
61585
71783
81783
91783
101783
111981
121981
131981
142179
152179
162278
172377
182476
192476
202674
212674
222773
232872
242971
253070
263169
273268
283367
293466
303466

Chance of precipitation in September

Any precipitation

Muang Sing gets around 206 mm of rain over 23.4 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 78% and peaks near 87% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
187
287
387
486
586
685
785
884
984
1083
1183
1282
1381
1480
1580
1679
1778
1877
1976
2075
2174
2274
2373
2472
2571
2670
2769
2868
2967
3066

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 55% of days. Sticky, muggy-or-worse air turns up on roughly 95% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1011980
2012079
3012277
4012376
5012574
6012772
7022969
8023068
9023266
10023464
11023662
12033760
13033958
14134056
15144154
16144253
17154351
18154450
19154449
20164548
21164646
22274745
23274843
24284941
25285139
26295336
27295534
282105632
293105730
303115828

Wind in September

Winds average 4 km/h in September.

Across September, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 24 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over September. Sunrise moves from 6:02 AM to 6:10 AM, and sunset from 6:28 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:026:28
212.46:036:27
312.46:036:26
412.46:036:25
512.36:036:24
612.36:046:23
712.36:046:22
812.36:046:21
912.36:046:20
1012.26:056:19
1112.26:056:18
1212.26:056:17
1312.26:056:16
1412.26:066:15
1512.16:066:14
1612.16:066:13
1712.16:066:12
1812.16:076:11
1912.16:076:10
2012.06:076:09
2112.06:076:08
2212.06:086:07
2312.06:086:06
2412.06:086:05
2511.96:086:04
2611.96:096:03
2711.96:096:02
2811.96:096:01
2911.86:106:01
3011.86:106:00

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.3 kWh/m².

For context, solar energy here swings from a low near 3.71 kWh/m² to a high of 6.05 kWh/m² in April across the year — September's 4.3 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.3Bright
54.3Bright
64.3Bright
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
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.4Bright
294.4Bright
304.4Bright
Planning a trip in September

Hazard calendar for Muang Sing

In seasonPeak

In September, Muang Sing sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Muang Sing's monsoon runs April–September, when most of the year's rain falls.

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

Is September a good time to visit Muang Sing?

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

3.8
Sightseeing
8th-best month of the year
4.6
Beach & pool
9th-best month of the year

September is a weaker month for outdoor sightseeing in Muang Sing.

What to pack for Muang Sing in September

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

In September, Muang Sing sees daytime highs around 28°C and nights near 21°C. Pack light clothes and rain gear. About 23 days see rain.

light clothesrain gear

UV index in Muang Sing in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Muang Sing peaks around June 22 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highHighJun 22UV 13Dec 20UV 6
UV index (midday)Level
Jan7High
Feb9Very high
Mar11Extreme
Apr10Very high
May11Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep11Extreme
Oct10Very high
Nov8Very high
Dec6High

Air quality in Muang Sing in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Muang Sing is worst in April — around 445 µg/m³ PM2.5 (very unhealthy), about 55.0× the cleanest month (November, 8 µg/m³).

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

0306090120150180210240270300330360390420JanFebMarAprMayJunJulAugSepOctNovDecModerateVery unhealthyGoodApr 14414 µg/m³Nov 98 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb30Moderate
Mar249Very unhealthy
Apr445Very unhealthy
May64Unhealthy
Jun11Good
Jul9Good
Aug9Good
Sep8Good
Oct8Good
Nov8Good
Dec10Good
Location & terrain

Where is Muang Sing?

Muang Sing sits at 21.2°N, 101.1°E, 639 m above sea level, in Laos. The nearest listed city is Luang Namtha, 38 km away.

Möng YawngMuang XayBan HouakhouaMöng LaKengtungBan KhoanTachilek

Topography around Muang Sing

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

Within 3 km, the terrain around Muang Sing has only modest variations in elevation — a maximum elevation change of 97 m around an average of 649 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,328 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,656 m.

The land around Muang Sing is covered by cropland (65%) and trees (26%) within 3 km, trees (85%) within 16 km, and trees (94%) within 80 km.

3 km
97 m
16 km
1,328 m
80 km
1,656 m
treesgrasslandcroplandartificial surfaces
September weather nearby: Luang Namtha 38 km · Möng Yawng 82 km · Muang Xay 103 km · Ban Houakhoua 128 km · Möng La 129 km · Kengtung 135 km · Ban Khoan 144 km · Tachilek 156 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 Muang Sing (21.1921°, 101.1479°, elevation 639 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).