Pakse weather in September

In September, Pakse sees average daytime highs of 30°C and overnight lows near 24°C, with 334 mm of rain across 27 wet days and about 12.1 hours of daylight. It is the 11th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 4% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 18 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Pakse's 9th-clearest and 12th-windiest month. For the whole year in context, see Pakse's year-round climate.

Daytime high
30°
11th warmest
Overnight low
24°
7th coldest
Rainfall
334 mm
27 wet days
Daylight
12 h 06 min
5:49 AM – 5:54 PM
Cloud cover
87%
9th clearest
Wind
5 km/h
12th windiest
Solar energy
4 kWh/m²
Travel score
2.8
out of 10

Pakse is city in Laos.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical September day in Pakse reaches about 30°C in the afternoon and slips back to 24°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13024
23024
33024
43024
53024
63024
73024
83024
93024
103024
113024
123024
133024
143024
153024
163024
173024
183024
193024
203024
213024
223024
233024
243024
253024
263024
273024
283024
293024
303024

How September really feels in Pakse

Once humidity and wind are folded in, September averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Pakse weather by month

How September compares with the rest of the year at a glance. September is the 11th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 19°20.711.25.5
Feb33° / 20°41.211.54.6
Mar34° / 23°244.411.93.4
Apr35° / 25°5310.112.32.7
May33° / 25°19022.212.72.4
Jun31° / 25°31726.612.92.5
Jul30° / 24°44329.212.82.6
Aug30° / 24°44429.312.52.6
Sep30° / 24°3342712.12.8
Oct30° / 23°13917.111.73.9
Nov31° / 21°34511.35.2
Dec31° / 19°61.311.15.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 7% of September, with mostly cloudy or overcast conditions the remaining 89%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1892
2793
3793
4793
5793
6793
7793
8793
9793
10793
11793
12793
13793
14991
15991
16991
171090
181288
191288
201486
211486
221486
231585
241585
251684
261783
271882
281882
291981
301981

Chance of precipitation in September

Any precipitation

Pakse gets around 334 mm of rain over 27 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 89% and peaks near 93% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
193
293
393
493
593
693
793
893
993
1093
1193
1292
1392
1492
1591
1691
1790
1889
1989
2088
2188
2287
2386
2485
2585
2684
2783
2882
2982
3081

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

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

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
101486
201486
301486
401486
501585
601585
701585
801684
901684
1001783
1101783
1201882
1301981
1402080
1502080
1602179
1702179
1802278
1902278
2002278
2102278
2202278
2302278
2402377
2502377
2602377
2702377
2802377
2902476
3012475

Wind in September

Winds average 5 km/h in September, the calmest month.

Across September, 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.

0246810151015202530
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
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 18 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over September. Sunrise moves from 5:48 AM to 5:50 AM, and sunset from 6:05 PM to 5:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:486:05
212.35:486:05
312.35:486:04
412.35:486:03
512.25:486:02
612.25:486:02
712.25:486:01
812.25:486:00
912.25:485:59
1012.25:485:58
1112.25:485:58
1212.15:485:57
1312.15:485:56
1412.15:485:55
1512.15:495:54
1612.15:495:54
1712.15:495:53
1812.15:495:52
1912.05:495:51
2012.05:495:50
2112.05:495:50
2212.05:495:49
2312.05:495:48
2412.05:495:47
2512.05:495:46
2611.95:495:46
2711.95:495:45
2811.95:505:44
2911.95:505:43
3011.95:505:43

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4 kWh/m² to a high of 5.94 kWh/m² in March across the year — September's 4 kWh/m² sits near the bottom.

012345151015202530
Solar energy (kWh/m²)Level
14.0Moderate
24.0Moderate
34.0Moderate
44.0Moderate
54.0Moderate
63.9Moderate
73.9Moderate
83.9Moderate
93.9Moderate
103.9Moderate
113.9Moderate
123.9Moderate
133.9Moderate
143.9Moderate
153.9Moderate
164.0Moderate
174.0Moderate
184.0Moderate
194.0Moderate
204.0Bright
214.0Bright
224.0Bright
234.0Bright
244.1Bright
254.1Bright
264.1Bright
274.1Bright
284.1Bright
294.2Bright
304.2Bright
Planning a trip in September

Hazard calendar for Pakse

In seasonPeak

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

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

Pakse's monsoon runs June–September, when most of the year's rain falls.

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

Is September a good time to visit Pakse?

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

2.8
Sightseeing
7th-best month of the year
3.9
Beach & pool
9th-best month of the year

September is a weaker month for outdoor sightseeing in Pakse.

What to pack for Pakse in September

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

In September, Pakse sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. About 27 days see rain.

light clothesrain gear

UV index in Pakse 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 Pakse peaks around August 13 at about 13 (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 13UV 13Dec 13UV 8
UV index (midday)Level
Jan9Very high
Feb10Very high
Mar11Extreme
Apr11Extreme
May11Extreme
Jun12Extreme
Jul13Extreme
Aug14Extreme
Sep11Extreme
Oct11Extreme
Nov8Very high
Dec8Very high

Air quality in Pakse 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 Pakse 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 Pakse?

Pakse sits at 15.1°N, 105.8°E, 105 m above sea level, in Laos. The nearest listed city is Champasak, 27 km away.

Ban LaongamPhibun MangsahanDet UdomWarin ChamrapSekongUbon RatchathaniKantharalak

Topography around Pakse

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

Within 3 km, the terrain around Pakse has only modest variations in elevation — a maximum elevation change of 151 m around an average of 101 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,167 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,611 m.

The land around Pakse is covered by water (33%) and artificial surfaces (24%) within 3 km, trees (44%) and cropland (32%) within 16 km, and trees (58%) and cropland (30%) within 80 km.

3 km
151 m
16 km
1,167 m
80 km
1,611 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Champasak 27 km · Ban Laongam 55 km · Phibun Mangsahan 63 km · Det Udom 81 km · Warin Chamrap 101 km · Sekong 102 km · Ubon Ratchathani 103 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 Pakse (15.1202°, 105.799°, elevation 105 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).