Nong Kung Si weather in September

In September, Nong Kung Si sees average daytime highs of 31°C and overnight lows near 25°C, with 239 mm of rain across 23.1 wet days and about 12.1 hours of daylight. It is the 8th-warmest and 2nd-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 10% 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 Nong Kung Si's 9th-clearest and 12th-windiest month. For the whole year in context, see Nong Kung Si's year-round climate.

Daytime high
31°
8th warmest
Overnight low
25°
7th coldest
Rainfall
239 mm
23.1 wet days
Daylight
12 h 06 min
5:58 AM – 6:04 PM
Cloud cover
81%
9th clearest
Wind
6 km/h
12th windiest
Solar energy
4.53 kWh/m²
Travel score
2.9
out of 10

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 Nong Kung Si 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 29°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
243125
253125
263125
273125
283125
293125
303125

How September really feels in Nong Kung Si

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.

Nong Kung Si weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 18°81.811.16.5
Feb32° / 20°122.211.45.1
Mar34° / 23°34611.93.3
Apr35° / 25°6910.312.42.3
May34° / 26°17420.412.82.2
Jun33° / 26°16020132.5
Jul32° / 26°20122.412.92.6
Aug31° / 25°25825.212.62.6
Sep31° / 25°23923.112.12.9
Oct31° / 24°9311.611.64.3
Nov30° / 21°213.111.25.7
Dec29° / 18°51.1116.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 10% of September, with mostly cloudy or overcast conditions the remaining 81%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1892
2892
3892
4892
5892
6991
71090
81189
91288
101387
111387
121585
131585
141783
151882
162080
172080
182278
192278
202575
212575
222773
232773
242872
253070
263169
273169
283268
293466
303565

Chance of precipitation in September

Any precipitation

Nong Kung Si gets around 239 mm of rain over 23.1 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 77% 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
686
786
885
985
1084
1184
1283
1383
1482
1581
1680
1778
1877
1975
2074
2173
2271
2369
2468
2566
2665
2764
2862
2961
3060

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 (%)
101585
201585
301684
401684
501783
601783
701882
801882
901981
1001981
1112079
1212079
1312178
1412277
1512376
1622474
1722573
1822771
1922870
2022969
2133067
2233265
2333463
2443561
2543759
2653956
2754154
2864351
2974449
3074647

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 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
287calm
297calm
307calm

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 5:57 AM to 6:00 AM, and sunset from 6:16 PM to 5:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:576:16
212.35:576:16
312.35:576:15
412.35:576:14
512.35:576:13
612.35:576:12
712.25:576:12
812.25:576:11
912.25:586:10
1012.25:586:09
1112.25:586:08
1212.25:586:07
1312.15:586:06
1412.15:586:06
1512.15:586:05
1612.15:586:04
1712.15:586:03
1812.15:596:02
1912.05:596:01
2012.05:596:00
2112.05:596:00
2212.05:595:59
2312.05:595:58
2412.05:595:57
2511.95:595:56
2611.96:005:55
2711.96:005:55
2811.96:005:54
2911.96:005:53
3011.96:005:52

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.53 kWh/m².

For context, solar energy here swings from a low near 4.46 kWh/m² to a high of 6.11 kWh/m² in April across the year — September's 4.53 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.4Bright
84.4Bright
94.4Bright
104.4Bright
114.4Bright
124.4Bright
134.4Bright
144.4Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
Planning a trip in September

Hazard calendar for Nong Kung Si

In seasonPeak

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

Nong Kung Si'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 September a good time to visit Nong Kung Si?

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
10th-best month of the year

September is a weaker month for outdoor sightseeing in Nong Kung Si.

What to pack for Nong Kung Si in September

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

In September, Nong Kung Si sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.

light clothesrain gearsun protection

UV index in Nong Kung Si 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 Nong Kung Si peaks around August 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 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 11UV 13Dec 14UV 8
UV index (midday)Level
Jan9Very high
Feb10Extreme
Mar12Extreme
Apr10Extreme
May12Extreme
Jun12Extreme
Jul13Extreme
Aug13Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Nong Kung Si 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 Nong Kung Si is worst in March — around 52 µg/m³ PM2.5 (poor), about 2.4× the cleanest month (December, 22 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMar 1751 µg/m³Dec 1022 µg/m³
PM2.5 (µg/m³)Level
Jan27Moderate
Feb39Poor
Mar52Poor
Apr41Poor
May30Moderate
Jun23Moderate
Jul24Moderate
Aug25Moderate
Sep27Moderate
Oct27Moderate
Nov22Moderate
Dec22Moderate
Location & terrain

Where is Nong Kung Si?

Nong Kung Si sits at 16.6°N, 103.3°E, 183 m above sea level, in Thailand. The nearest listed city is Kalasin, 33 km away.

Topography around Nong Kung Si

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

Within 3 km, the terrain around Nong Kung Si has only modest variations in elevation — a maximum elevation change of 39 m around an average of 178 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 191 m; within 80 km, significant variations in elevation — a maximum elevation change of 529 m.

The land around Nong Kung Si is covered by cropland (76%) within 3 km, cropland (75%) within 16 km, and cropland (71%) and trees (23%) within 80 km.

3 km
39 m
16 km
191 m
80 km
529 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Kalasin 33 km · Kamalasai 45 km · Maha Sarakham 52 km · Khon Kaen 55 km · Ban Phan Don 65 km · Ban Nong Wua So 69 km · Roi Et 76 km · Warichaphum 80 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 Nong Kung Si (16.65°, 103.3°, elevation 183 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).