Ban Phai weather in September

In September, Ban Phai sees average daytime highs of 32°C and overnight lows near 25°C, with 238 mm of rain across 24.2 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 Ban Phai's 9th-clearest and 12th-windiest month. For the whole year in context, see Ban Phai's year-round climate.

Daytime high
32°
8th warmest
Overnight low
25°
7th coldest
Rainfall
238 mm
24.2 wet days
Daylight
12 h 06 min
6:01 AM – 6:06 PM
Cloud cover
84%
9th clearest
Wind
7 km/h
12th windiest
Solar energy
4.55 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 Ban Phai 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 34°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 Ban Phai

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
2 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.

Ban Phai 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°71.511.25.8
Feb33° / 20°102.411.54.3
Mar35° / 24°366.111.92.7
Apr36° / 26°6310.812.41.9
May35° / 26°14719.812.71.9
Jun34° / 26°12617.912.92.2
Jul33° / 26°14919.512.92.4
Aug33° / 26°19922.112.52.5
Sep32° / 25°23824.212.12.6
Oct31° / 24°12113.711.63.9
Nov31° / 21°273.611.35.3
Dec30° / 19°61.211.16.3

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 10% of September, with mostly cloudy or overcast conditions the remaining 84%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1694
2595
3595
4595
5595
6793
7793
8991
9991
101189
111288
121288
131486
141585
151585
161783
171783
181981
192080
202080
212179
222278
232278
242476
252476
262476
272575
282575
292773
302872

Chance of precipitation in September

Any precipitation

Ban Phai gets around 238 mm of rain over 24.2 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 80% and peaks near 84% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
183
283
383
483
584
684
784
884
984
1084
1184
1284
1383
1483
1582
1682
1781
1880
1980
2079
2178
2278
2377
2476
2575
2675
2774
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 64% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
103466
203466
303466
403466
503466
603466
703466
803367
903367
1003367
1113267
1213267
1313267
1413267
1513267
1613267
1713267
1823266
1923266
2023266
2123266
2233364
2333364
2433463
2533562
2643660
2743759
2853956
2954055
3064153

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

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
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 5:59 AM to 6:02 AM, and sunset from 6:18 PM to 5:55 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:596:18
212.35:596:18
312.35:596:17
412.36:006:16
512.36:006:15
612.26:006:14
712.26:006:14
812.26:006:13
912.26:006:12
1012.26:006:11
1112.26:006:10
1212.26:006:09
1312.16:006:09
1412.16:016:08
1512.16:016:07
1612.16:016:06
1712.16:016:05
1812.16:016:04
1912.06:016:04
2012.06:016:03
2112.06:016:02
2212.06:016:01
2312.06:016:00
2412.06:025:59
2511.96:025:59
2611.96:025:58
2711.96:025:57
2811.96:025:56
2911.96:025:55
3011.96:025:55

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.55 kWh/m².

For context, solar energy here swings from a low near 4.53 kWh/m² to a high of 6.15 kWh/m² in April across the year — September's 4.55 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
244.6Bright
254.6Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
Planning a trip in September

Hazard calendar for Ban Phai

In seasonPeak

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

Ban Phai'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 Ban Phai?

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
12th-best month of the year

September is a weaker month for outdoor sightseeing in Ban Phai.

What to pack for Ban Phai in September

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

In September, Ban Phai sees daytime highs around 32°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

UV index in Ban Phai 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 Ban Phai peaks around August 12 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 12UV 13Dec 13UV 8
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar11Extreme
Apr10Very high
May11Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Ban Phai 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 Ban Phai is worst in March — around 50 µg/m³ PM2.5 (poor), about 2.4× the cleanest month (June, 21 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateMar 1549 µg/m³Jun 2221 µg/m³
PM2.5 (µg/m³)Level
Jan32Moderate
Feb43Poor
Mar50Poor
Apr39Poor
May29Moderate
Jun21Moderate
Jul22Moderate
Aug23Moderate
Sep27Moderate
Oct30Moderate
Nov26Moderate
Dec24Moderate
Location & terrain

Where is Ban Phai?

Ban Phai sits at 16.1°N, 102.7°E, 174 m above sea level, in Thailand. The nearest listed city is Khon Kaen, 44 km away.

Topography around Ban Phai

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

Within 3 km, the terrain around Ban Phai has only modest variations in elevation — a maximum elevation change of 34 m around an average of 173 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 87 m; within 80 km, large variations in elevation — a maximum elevation change of 894 m.

The land around Ban Phai is covered by cropland (41%), trees (26%) and artificial surfaces (22%) within 3 km, cropland (78%) within 16 km, and cropland (79%) within 80 km.

3 km
34 m
16 km
87 m
80 km
894 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Khon Kaen 44 km · Kaeng Khro 51 km · Bua Yai 62 km · Maha Sarakham 62 km · Phu Khiao 73 km · Chaiyaphum 80 km · Chum Phae 86 km · Kaset Sombun 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 Ban Phai (16.06°, 102.731°, elevation 174 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).