Phetchabun weather in September

In September, Phetchabun sees average daytime highs of 30°C and overnight lows near 23°C, with 247 mm of rain across 25.6 wet days and about 12.1 hours of daylight. It is the 9th-warmest and 2nd-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 oppressive.

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 Phetchabun's 9th-clearest and 12th-windiest month. For the whole year in context, see Phetchabun's year-round climate.

Daytime high
30°
9th warmest
Overnight low
23°
8th coldest
Rainfall
247 mm
25.6 wet days
Daylight
12 h 06 min
6:07 AM – 6:12 PM
Cloud cover
85%
9th clearest
Wind
4 km/h
12th windiest
Solar energy
4.14 kWh/m²
Travel score
2.9
out of 10

Phetchabun is town in Phetchabun province, Thailand.

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 Phetchabun reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°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)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263023
273023
283123
293123
303123

How September really feels in Phetchabun

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.

Phetchabun weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 17°8211.16.3
Feb32° / 19°122.511.45.3
Mar33° / 21°315.911.94.1
Apr34° / 23°5410.412.43.1
May33° / 24°15220.212.82.7
Jun31° / 24°17323.5132.7
Jul30° / 24°22425.812.92.9
Aug30° / 23°26227.612.62.8
Sep30° / 23°24725.612.12.9
Oct31° / 22°11314.211.64.2
Nov31° / 20°233.311.25.6
Dec29° / 17°81.3116.7

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 8% of September, with mostly cloudy or overcast conditions the remaining 88%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1496
2595
3595
4595
5595
6595
7694
8694
9694
10793
11892
12892
13991
141090
151090
161189
171189
181486
191486
201585
211684
221882
231882
241981
252080
262179
272377
282476
292575
302674

Chance of precipitation in September

Any precipitation

Phetchabun gets around 247 mm of rain over 25.6 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 85% and peaks near 90% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
189
289
389
490
590
690
789
889
989
1089
1189
1289
1388
1488
1587
1687
1786
1886
1985
2084
2183
2283
2382
2481
2580
2679
2778
2877
2976
3074

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 68% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
106931
206931
306931
406931
506931
606931
706931
806931
906931
1006931
1116831
1216831
1316831
1416831
1516831
1626731
1726830
1826830
1936730
2036730
2136730
2236730
2346729
2446729
2546828
2656827
2756926
2857025
2967024
3067123

Wind in September

Winds average 4 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
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
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 6:05 AM to 6:09 AM, and sunset from 6:25 PM to 6:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:056:25
212.36:056:24
312.36:066:23
412.36:066:22
512.36:066:22
612.26:066:21
712.26:066:20
812.26:066:19
912.26:066:18
1012.26:066:17
1112.26:066:17
1212.26:076:16
1312.16:076:15
1412.16:076:14
1512.16:076:13
1612.16:076:12
1712.16:076:12
1812.16:076:11
1912.06:076:10
2012.06:076:09
2112.06:076:08
2212.06:086:07
2312.06:086:07
2412.06:086:06
2511.96:086:05
2611.96:086:04
2711.96:086:03
2811.96:086:02
2911.96:086:02
3011.96:096:01

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.14 kWh/m².

For context, solar energy here swings from a low near 3.91 kWh/m² to a high of 6.15 kWh/m² in April across the year — September's 4.14 kWh/m² sits near the bottom.

012345151015202530
Solar energy (kWh/m²)Level
14.0Moderate
24.0Moderate
34.0Moderate
44.0Moderate
54.0Moderate
64.0Moderate
74.0Moderate
84.0Moderate
94.0Bright
104.0Bright
114.0Bright
124.0Bright
134.0Bright
144.1Bright
154.1Bright
164.1Bright
174.1Bright
184.1Bright
194.2Bright
204.2Bright
214.2Bright
224.2Bright
234.2Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
Planning a trip in September

Hazard calendar for Phetchabun

In seasonPeak

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

Phetchabun'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 Phetchabun?

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

2.9
Sightseeing
8th-best month of the year
4.1
Beach & pool
10th-best month of the year

September is a weaker month for outdoor sightseeing in Phetchabun.

What to pack for Phetchabun in September

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

In September, Phetchabun sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. About 26 days see rain.

light clothesrain gear

UV index in Phetchabun 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 Phetchabun 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
Feb10Extreme
Mar12Extreme
Apr11Extreme
May12Extreme
Jun13Extreme
Jul13Extreme
Aug14Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Phetchabun 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 Phetchabun is worst in March — around 49 µg/m³ PM2.5 (poor), about 2.6× the cleanest month (June, 19 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMar 1648 µg/m³Jun 2319 µg/m³
PM2.5 (µg/m³)Level
Jan31Moderate
Feb42Poor
Mar49Poor
Apr40Poor
May26Moderate
Jun19Moderate
Jul19Moderate
Aug19Moderate
Sep20Moderate
Oct22Moderate
Nov21Moderate
Dec24Moderate
Location & terrain

Where is Phetchabun?

Phetchabun sits at 16.4°N, 101.2°E, 120 m above sea level, in Thailand. The nearest listed city is Chon Daen, 41 km away.

Topography around Phetchabun

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

Within 3 km, the terrain around Phetchabun has only modest variations in elevation — a maximum elevation change of 24 m around an average of 118 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,143 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,764 m.

The land around Phetchabun is covered by cropland (39%), trees (32%) and artificial surfaces (25%) within 3 km, trees (48%) and cropland (44%) within 16 km, and trees (61%) and cropland (34%) within 80 km.

3 km
24 m
16 km
1,143 m
80 km
1,764 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Chon Daen 41 km · Lom Sak 41 km · Nong Phai 49 km · Thap Khlo 67 km · Taphan Hin 82 km · Wichian Buri 85 km · Kaset Sombun 86 km · Phichit 87 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 Phetchabun (16.419°, 101.1606°, elevation 120 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).