Khon Kaen in Fall

In fall (September, October and November), Khon Kaen sees average daytime highs around 31°C and overnight lows near 23°C, with 365 mm of rain over about 40 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.

Across fall, daytime highs hold fairly steady around 31°C. The sky is clear or mostly clear about 27% of the time across fall, and the air most often feels miserable.

Fall is Khon Kaen's 2nd-best season to visit on our travel score. For the whole year in context, see Khon Kaen's year-round climate.

Avg daytime high: 31°C; 3rd-warmest season
Avg overnight low: 23°C
Rainfall: 365 mm; 40 wet days
Avg wind: 7 km/h
Travel score: 4.1; 2nd-best season
Months: Sep · Oct · Nov

← Summer Khon Kaen year-round climate Winter →

Spring Summer Fall Winter

Temperature in Khon Kaen in Fall

Average highAverage lowShaded bands: 10–90% of days

Across fall, daytime highs hold fairly steady around 31°C.

A typical fall day in Khon Kaen reaches about 31°C and drops to 23°C overnight. The warmest of the three months is September, the coolest November.

How fall really feels in Khon Kaen

Once humidity and wind are folded in, fall brings about 84 days that feel above 32°C and 0 that feel at or below 0°C.

Days feeling ≥ 32°C

16 feel dangerously hot (≥ 39°C)

Days feeling ≤ 0°C

wind chill below the day's low

The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Khon Kaen weather by month

How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	30° / 18°	7	1.6	11.1	6.0
Feb	33° / 20°	11	2.4	11.4	4.5
Mar	35° / 24°	34	5.9	11.9	2.8
Apr	36° / 26°	65	10.7	12.4	2.0
May	35° / 26°	152	20.1	12.8	2.0
Jun	34° / 26°	134	19.2	13	2.2
Jul	33° / 26°	164	20.3	12.9	2.4
Aug	32° / 26°	214	23.3	12.6	2.5
Sep	32° / 25°	237	23.3	12.1	2.7
Oct	31° / 24°	104	12.8	11.6	4.1
Nov	31° / 21°	24	3.5	11.2	5.4
Dec	30° / 19°	5	1	11	6.5

Cloud cover in Fall

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time across fall.

Chance of precipitation in Fall

Any precipitation

Khon Kaen gets around 365 mm of rain over 40 wet days across fall. The line is the day-by-day chance of measurable precipitation.

Humidity in Fall

DryComfortableHumidMuggyOppressiveMiserable

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

Wind in Fall

Winds average 7 km/h across fall.

Sunrise & sunset in Fall

DaylightNight

Daylight runs from about 12 h 18 min in early September to 11 h 06 min by late November. The lit band spans sunrise to sunset each day.

Solar energy in Fall

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across fall, about 4.7 kWh/m².

Planning a trip in fall

Hazard calendar for Khon Kaen

In seasonPeak

In fall, Khon Kaen overlaps its monsoon season. The full year is below, with each hazard's peak months called out.

Khon Kaen'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 fall a good time to visit Khon Kaen?

Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.

4.1

Sightseeing

2nd-best month of the year

6.1

Beach & pool

2nd-best month of the year

fall is a reasonable time to visit Khon Kaen for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Khon Kaen in Fall

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

In fall, Khon Kaen sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 40 days see rain.

light clothesrain gearsun protection

UV index in Khon Kaen in Fall

LowModerateHighVery highExtreme

Clear-sky midday UV across fall averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Khon Kaen peaks around August 12 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.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	9	10	12	10	12	12	13	13	11	10	8	8
Level	Very high	Extreme	Extreme	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high

	UV index (midday)	Level
Jan	9	Very high
Feb	10	Extreme
Mar	12	Extreme
Apr	10	Very high
May	12	Extreme
Jun	12	Extreme
Jul	13	Extreme
Aug	13	Extreme
Sep	11	Extreme
Oct	10	Extreme
Nov	8	Very high
Dec	8	Very high

Air quality in Khon Kaen in Fall

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.

Air quality in Khon Kaen is worst in March — around 56 µg/m³ PM2.5 (unhealthy), about 2.5× the cleanest month (June, 22 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Khon Kaen's WHO annual average of 34 µg/m³.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	37	48	56	43	31	22	23	24	29	33	31	29
Level	Poor	Poor	Unhealthy	Poor	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	37	Poor
Feb	48	Poor
Mar	56	Unhealthy
Apr	43	Poor
May	31	Moderate
Jun	22	Moderate
Jul	23	Moderate
Aug	24	Moderate
Sep	29	Moderate
Oct	33	Moderate
Nov	31	Moderate
Dec	29	Moderate

Location & terrain

Where is Khon Kaen?

Khon Kaen sits at 16.4°N, 102.8°E, 167 m above sea level, in Thailand. The nearest listed city is Ban Phai, 44 km away.

Topography around Khon Kaen

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

Within 3 km, the terrain around Khon Kaen has only modest variations in elevation — a maximum elevation change of 64 m around an average of 165 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 80 m; within 80 km, large variations in elevation — a maximum elevation change of 683 m.

The land around Khon Kaen is covered by artificial surfaces (51%) and trees (35%) within 3 km, cropland (54%) and trees (26%) within 16 km, and cropland (75%) within 80 km.

3 km

64 m

artificial surfaces 51%

16 km

80 m

cropland 54%

80 km

683 m

cropland 75%

treesgrasslandcroplandartificial surfaceswater

← Summer Khon Kaen year-round climate Winter →

Fall weather nearby: Ban Phai 44 km · Nong Kung Si 55 km · Maha Sarakham 58 km · Kalasin 72 km · Kaeng Khro 72 km · Phu Khiao 76 km · Ban Phan Don 79 km · Chum Phae 79 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

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 Khon Kaen (16.4467°, 102.833°, elevation 167 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.