Kaset Wisai weather in September

In September, Kaset Wisai sees average daytime highs of 32°C and overnight lows near 25°C, with 263 mm of rain across 24.6 wet days and about 12.1 hours of daylight. It is the 8th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 6% 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 Kaset Wisai's 9th-clearest and 12th-windiest month. For the whole year in context, see Kaset Wisai's year-round climate.

Daytime high
32°
8th warmest
Overnight low
25°
7th coldest
Rainfall
263 mm
24.6 wet days
Daylight
12 h 06 min
5:57 AM – 6:03 PM
Cloud cover
84%
9th clearest
Wind
7 km/h
12th windiest
Solar energy
4.51 kWh/m²
Travel score
2.6
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical September day in Kaset Wisai reaches about 32°C in the afternoon and slips back to 25°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 30°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)
13225
23225
33225
43225
53225
63225
73225
83225
93225
103225
113225
123225
133225
143225
153225
163225
173225
183225
193225
203225
213225
223225
233225
243225
253225
263225
273225
283225
293225
303225

How September really feels in Kaset Wisai

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
12 feel dangerously hot (≥ 39°C)
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.

Kaset Wisai weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 18°61.711.25.8
Feb33° / 20°112.211.54.4
Mar35° / 24°416.411.92.8
Apr36° / 26°6911.512.32.0
May35° / 26°17720.612.72.0
Jun34° / 26°15720.612.92.2
Jul33° / 26°19322.212.82.4
Aug32° / 26°23324.612.52.4
Sep32° / 25°26324.612.12.6
Oct31° / 24°12413.211.64.0
Nov31° / 22°263.611.35.2
Dec30° / 19°61.311.16.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 9% of September, with mostly cloudy or overcast conditions the remaining 85%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1892
2793
3793
4793
5892
6892
7892
8991
9991
101090
111189
121189
131387
141387
151585
161585
171684
181783
191783
201981
211981
221981
232179
242179
252179
262278
272377
282476
292575
302674

Chance of precipitation in September

Any precipitation

Kaset Wisai gets around 263 mm of rain over 24.6 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 82% and peaks near 85% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
184
284
384
484
585
685
785
885
985
1085
1185
1285
1385
1485
1585
1684
1784
1883
1983
2082
2181
2280
2379
2478
2577
2676
2775
2873
2972
3071

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 76% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
101882
201882
301882
401882
501882
601882
701882
801981
901981
1001981
1101981
1202080
1312079
1412079
1512178
1612178
1712277
1812376
1912376
2012475
2112574
2212673
2312772
2412871
2522969
2623167
2723266
2823464
2933562
3033760

Wind in September

Winds average 7 km/h in September, the calmest month.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
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 5:56 AM to 5:59 AM, and sunset from 6:15 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:566:15
212.35:566:14
312.35:566:13
412.35:566:12
512.35:576:12
612.25:576:11
712.25:576:10
812.25:576:09
912.25:576:08
1012.25:576:08
1112.25:576:07
1212.15:576:06
1312.15:576:05
1412.15:576:04
1512.15:576:03
1612.15:576:03
1712.15:576:02
1812.15:586:01
1912.05:586:00
2012.05:585:59
2112.05:585:58
2212.05:585:58
2312.05:585:57
2412.05:585:56
2512.05:585:55
2611.95:585:54
2711.95:585:54
2811.95:585:53
2911.95:595:52
3011.95:595:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.51 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.51 kWh/m² to a high of 6.19 kWh/m² in April across the year — September's 4.51 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
Planning a trip in September

Hazard calendar for Kaset Wisai

In seasonPeak

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

Kaset Wisai's monsoon runs May–October, 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 Kaset Wisai?

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

2.6
Sightseeing
7th-best month of the year
4.1
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Kaset Wisai.

What to pack for Kaset Wisai in September

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

In September, Kaset Wisai sees daytime highs around 32°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.

light clothesrain gearsun protection

UV index in Kaset Wisai in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kaset Wisai peaks around August 13 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 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 13Nov 23UV 8
UV index (midday)Level
Jan9Very high
Feb10Extreme
Mar12Extreme
Apr10Very high
May11Extreme
Jun12Extreme
Jul13Extreme
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov8Very high
Dec8Very high

Air quality in Kaset Wisai 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 Kaset Wisai is worst in March — around 52 µg/m³ PM2.5 (poor), about 2.6× the cleanest month (December, 20 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMar 1751 µg/m³Dec 1320 µg/m³
PM2.5 (µg/m³)Level
Jan28Moderate
Feb40Poor
Mar52Poor
Apr41Poor
May30Moderate
Jun22Moderate
Jul24Moderate
Aug25Moderate
Sep28Moderate
Oct28Moderate
Nov23Moderate
Dec20Moderate
Location & terrain

Where is Kaset Wisai?

Kaset Wisai sits at 15.7°N, 103.6°E, 145 m above sea level, in Thailand. The nearest listed city is Roi Et, 45 km away.

Topography around Kaset Wisai

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

Within 3 km, the terrain around Kaset Wisai has only modest variations in elevation — a maximum elevation change of 33 m around an average of 132 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 37 m; within 80 km, only modest variations in elevation — a maximum elevation change of 133 m.

The land around Kaset Wisai is covered by cropland (65%) within 3 km, cropland (81%) within 16 km, and cropland (81%) within 80 km.

3 km
33 m
16 km
37 m
80 km
133 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Roi Et 45 km · Ban Selaphum 56 km · Yasothon 62 km · Maha Sarakham 66 km · Kamalasai 76 km · Surin 87 km · Kalasin 87 km · Buri Ram 90 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 Kaset Wisai (15.6556°, 103.5836°, elevation 145 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).