Sakon Nakhon weather in September

In September, Sakon Nakhon sees average daytime highs of 31°C and overnight lows near 25°C, with 268 mm of rain across 23.6 wet days and about 12.1 hours of daylight. It is the 7th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 11% 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 Sakon Nakhon's 9th-clearest and 12th-windiest month. For the whole year in context, see Sakon Nakhon's year-round climate.

Daytime high
31°
7th warmest
Overnight low
25°
8th coldest
Rainfall
268 mm
23.6 wet days
Daylight
12 h 06 min
5:55 AM – 6:01 PM
Cloud cover
80%
9th clearest
Wind
6 km/h
12th windiest
Solar energy
4.38 kWh/m²
Travel score
2.9
out of 10

Sakon Nakhon is city in Sakon Nakhon province, Thailand.

Density
1,398/km²
people per km²

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 31°C through the month.

A typical September day in Sakon Nakhon reaches about 31°C in the afternoon and slips back to 25°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 33°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)
13125
23125
33125
43125
53125
63125
73125
83125
93125
103125
113125
123125
133125
143125
153125
163125
173125
183125
193125
203125
213125
223125
233125
243124
253124
263124
273124
283124
293124
303124

How September really feels in Sakon Nakhon

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.

Sakon Nakhon weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 17°61.511.17.0
Feb31° / 19°142.811.45.7
Mar33° / 22°385.711.94.0
Apr34° / 25°7311.612.42.9
May33° / 25°21622.412.82.4
Jun32° / 26°24024.5132.5
Jul31° / 25°3142712.92.5
Aug31° / 25°35528.412.62.5
Sep31° / 25°26823.612.12.9
Oct31° / 23°9410.311.64.4
Nov31° / 20°183.211.25.7
Dec29° / 17°61.2117.1

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 11% 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 (%)
1991
2991
31090
41090
51189
61189
71288
81387
91387
101684
111684
121882
131882
142080
152278
162278
172476
182575
192773
202872
213070
223070
233169
243367
253367
263466
273664
283763
293763
303862

Chance of precipitation in September

Any precipitation

Sakon Nakhon gets around 268 mm of rain over 23.6 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 92% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
192
292
392
491
591
690
790
889
988
1087
1186
1285
1384
1483
1582
1680
1778
1877
1975
2073
2172
2270
2368
2466
2564
2662
2761
2859
2958
3057

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 71% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
101090
201090
301189
401189
501288
601387
711485
811485
911584
1011683
1111782
1221979
1322078
1422276
1532374
1632572
1732671
1842868
1943066
2053164
2153362
2253560
2363658
2463856
2574053
2684250
2784348
2894546
29104644
30114742

Wind in September

Winds average 6 km/h in September, the calmest month.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 5:53 AM to 5:57 AM, and sunset from 6:13 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:536:13
212.35:536:13
312.35:536:12
412.35:536:11
512.35:536:10
612.35:546:09
712.25:546:08
812.25:546:07
912.25:546:07
1012.25:546:06
1112.25:546:05
1212.25:546:04
1312.15:556:03
1412.15:556:02
1512.15:556:01
1612.15:556:01
1712.15:556:00
1812.15:555:59
1912.05:555:58
2012.05:555:57
2112.05:565:56
2212.05:565:55
2312.05:565:55
2412.05:565:54
2511.95:565:53
2611.95:565:52
2711.95:565:51
2811.95:575:50
2911.95:575:49
3011.95:575:49

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.38 kWh/m².

For context, solar energy here swings from a low near 4.18 kWh/m² to a high of 6.04 kWh/m² in April across the year — September's 4.38 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.1Bright
54.1Bright
64.1Bright
74.1Bright
84.2Bright
94.2Bright
104.2Bright
114.2Bright
124.2Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.4Bright
184.4Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.6Bright
244.6Bright
254.6Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
Planning a trip in September

Hazard calendar for Sakon Nakhon

In seasonPeak

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

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

Sakon Nakhon's monsoon runs May–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 Sakon Nakhon?

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

2.9
Sightseeing
7th-best month of the year
4.4
Beach & pool
8th-best month of the year

September is a weaker month for outdoor sightseeing in Sakon Nakhon.

What to pack for Sakon Nakhon in September

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

In September, Sakon Nakhon sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. About 24 days see rain.

light clothesrain gear

UV index in Sakon Nakhon 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 Sakon Nakhon peaks around July 19 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 highJul 19UV 13Dec 13UV 8
UV index (midday)Level
Jan9Very high
Feb10Very high
Mar12Extreme
Apr10Very high
May12Extreme
Jun12Extreme
Jul13Extreme
Aug13Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Sakon Nakhon 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 Sakon Nakhon is worst in March — around 62 µg/m³ PM2.5 (unhealthy), about 3.4× the cleanest month (November, 18 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorPoorModerateMar 1859 µg/m³Nov 1919 µg/m³
PM2.5 (µg/m³)Level
Jan23Moderate
Feb39Poor
Mar62Unhealthy
Apr46Poor
May28Moderate
Jun23Moderate
Jul22Moderate
Aug23Moderate
Sep22Moderate
Oct22Moderate
Nov18Moderate
Dec20Moderate
Location & terrain

Where is Sakon Nakhon?

Sakon Nakhon sits at 17.2°N, 104.1°E, 165 m above sea level, in Thailand. The nearest listed city is Khao Wong, 52 km away.

Mukdahan

Topography around Sakon Nakhon

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

Within 3 km, the terrain around Sakon Nakhon has only modest variations in elevation — a maximum elevation change of 30 m around an average of 162 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 343 m; within 80 km, significant variations in elevation — a maximum elevation change of 531 m.

The land around Sakon Nakhon is covered by trees (27%) and artificial surfaces (26%) within 3 km, cropland (45%) and trees (32%) within 16 km, and cropland (48%) and trees (46%) within 80 km.

3 km
30 m
16 km
343 m
80 km
531 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Khao Wong 52 km · Warichaphum 56 km · Kuchinarai 70 km · Nakhon Phanom 73 km · Tha Khaek 78 km · Sawang Daen Din 81 km · Seka 88 km · Mukdahan 92 km

Thailand travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B / C
230 V · 50 Hz
Prices
≈ 31% of US
price level, 2025
GDP per capita
$8,057
2025
Happiness
6.3 / 10
World Happiness, 2025
Homicide rate
4.8
per 100k, 2011
Road deaths
32.2
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very low
EF EPI 402
Religion
Buddhist 93%Muslim 5%Christian 1%other 1%

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 Sakon Nakhon (17.1612°, 104.1472°, elevation 165 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).