Chaiyaphum weather in September

In September, Chaiyaphum sees average daytime highs of 31°C and overnight lows near 25°C, with 238 mm of rain across 24.7 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 31°C through the month. The sky is clear or mostly clear about 5% 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 Chaiyaphum's 9th-clearest and 12th-windiest month. For the whole year in context, see Chaiyaphum's year-round climate.

Daytime high
31°
8th warmest
Overnight low
25°
7th coldest
Rainfall
238 mm
24.7 wet days
Daylight
12 h 06 min
6:04 AM – 6:09 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

Chaiyaphum is town in Chaiyaphum province, Thailand.

Density
1,896/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 Chaiyaphum reaches about 31°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 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)
13225
23225
33225
43225
53225
63225
73225
83225
93225
103125
113125
123125
133125
143125
153125
163125
173125
183125
193125
203125
213125
223125
233125
243125
253125
263125
273124
283124
293124
303124

How September really feels in Chaiyaphum

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.

Chaiyaphum 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° / 19°61.511.25.9
Feb33° / 21°91.811.54.5
Mar35° / 23°326.111.92.9
Apr36° / 25°641112.32.2
May34° / 26°15320.512.72.1
Jun33° / 26°13519.512.92.4
Jul32° / 25°15220.912.82.7
Aug32° / 25°18623.512.52.7
Sep31° / 25°23824.712.12.6
Oct31° / 24°12614.511.64.0
Nov31° / 21°243.511.35.4
Dec30° / 19°50.911.16.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 5% 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 86%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1595
2595
3595
4694
5694
6694
7793
8793
9892
10991
11991
121189
131189
141288
151486
161486
171684
181783
191882
201882
211981
222179
232179
242278
252278
262278
272377
282476
292575
302575

Chance of precipitation in September

Any precipitation

Chaiyaphum gets around 238 mm of rain over 24.7 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
485
585
685
785
885
985
1085
1185
1285
1385
1485
1584
1684
1783
1883
1982
2082
2181
2280
2380
2479
2579
2678
2777
2876
2976
3075

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 50% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
105149
205149
305149
405149
505149
605149
705149
805050
904951
1004951
1114851
1214851
1314851
1414752
1514752
1614752
1714752
1814653
1924652
2024652
2124652
2224652
2324652
2424751
2534750
2634849
2734948
2834947
2945046
3045244

Wind in September

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

Across September, daily wind ranges from about 6 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
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 6:02 AM to 6:05 AM, and sunset from 6:21 PM to 5:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:026:21
212.36:026:20
312.36:026:19
412.36:036:19
512.36:036:18
612.26:036:17
712.26:036:16
812.26:036:15
912.26:036:15
1012.26:036:14
1112.26:036:13
1212.16:036:12
1312.16:036:11
1412.16:036:10
1512.16:036:10
1612.16:046:09
1712.16:046:08
1812.16:046:07
1912.06:046:06
2012.06:046:06
2112.06:046:05
2212.06:046:04
2312.06:046:03
2412.06:046:02
2512.06:046:01
2611.96:046:01
2711.96:056:00
2811.96:055:59
2911.96:055:58
3011.96:055:57

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.

For context, solar energy here swings from a low near 4.42 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
264.5Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
Planning a trip in September

Hazard calendar for Chaiyaphum

In seasonPeak

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

Chaiyaphum'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 Chaiyaphum?

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

2.6
Sightseeing
9th-best month of the year
4.1
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Chaiyaphum.

What to pack for Chaiyaphum in September

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

In September, Chaiyaphum sees daytime highs around 31°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 Chaiyaphum 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 Chaiyaphum 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
Feb11Extreme
Mar11Extreme
Apr11Extreme
May11Extreme
Jun13Extreme
Jul13Extreme
Aug14Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Chaiyaphum 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 Chaiyaphum is worst in March — around 48 µg/m³ PM2.5 (poor), about 2.3× the cleanest month (June, 21 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMar 1547 µg/m³Jun 2221 µg/m³
PM2.5 (µg/m³)Level
Jan31Moderate
Feb42Poor
Mar48Poor
Apr37Poor
May28Moderate
Jun21Moderate
Jul21Moderate
Aug22Moderate
Sep25Moderate
Oct27Moderate
Nov24Moderate
Dec22Moderate
Location & terrain

Where is Chaiyaphum?

Chaiyaphum sits at 15.8°N, 102.0°E, 188 m above sea level, in Thailand. The nearest listed city is Kaeng Khro, 41 km away.

Topography around Chaiyaphum

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

Within 3 km, the terrain around Chaiyaphum has only modest variations in elevation — a maximum elevation change of 14 m around an average of 185 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 204 m; within 80 km, large variations in elevation — a maximum elevation change of 1,093 m.

The land around Chaiyaphum is covered by cropland (40%), artificial surfaces (30%) and trees (22%) within 3 km, cropland (70%) within 16 km, and cropland (70%) and trees (24%) within 80 km.

3 km
14 m
16 km
204 m
80 km
1,093 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Kaeng Khro 41 km · Bua Yai 49 km · Kaset Sombun 53 km · Phu Khiao 64 km · Dan Khun Thot 72 km · Non Sung 74 km · Ban Phai 80 km · Chum Phae 82 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 Chaiyaphum (15.8105°, 102.0288°, elevation 188 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).