Si Mahosot in Fall

In fall (September, October and November), Si Mahosot sees average daytime highs around 32°C and overnight lows near 24°C, with 480 mm of rain over about 50 wet days across the season. It is the coldest season of the year and the 2nd-wettest season.

Across fall, daytime highs hold fairly steady around 32°C. The sky is clear or mostly clear about 20% of the time across fall, and the air most often feels miserable.

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

Avg daytime high: 32°C; coldest season of the year
Avg overnight low: 24°C
Rainfall: 480 mm; 50 wet days
Avg wind: 6 km/h
Travel score: 3.5; 2nd-best season
Months: Sep · Oct · Nov

← Summer Si Mahosot year-round climate Winter →

Spring Summer Fall Winter

Temperature in Si Mahosot in Fall

Average highAverage lowShaded bands: 10–90% of days

Across fall, daytime highs hold fairly steady around 32°C.

A typical fall day in Si Mahosot reaches about 32°C and drops to 24°C overnight. The warmest of the three months is November, the coolest November.

How fall really feels in Si Mahosot

Once humidity and wind are folded in, fall brings about 91 days that feel above 32°C and 0 that feel at or below 0°C.

Days feeling ≥ 32°C

20 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.

Si Mahosot 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	32° / 21°	10	2.2	11.3	5.1
Feb	33° / 22°	13	3	11.5	4.2
Mar	34° / 24°	41	8.5	11.9	3.1
Apr	35° / 26°	70	13.3	12.3	2.3
May	34° / 26°	209	24	12.6	2.1
Jun	32° / 25°	267	26.5	12.8	2.2
Jul	32° / 25°	281	27.6	12.7	2.3
Aug	32° / 25°	300	28.2	12.5	2.3
Sep	31° / 25°	308	27.3	12.1	2.4
Oct	32° / 24°	148	18.8	11.7	3.4
Nov	32° / 23°	24	4.3	11.4	4.7
Dec	31° / 21°	5	1.2	11.2	5.5

Cloud cover in Fall

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time across fall.

Chance of precipitation in Fall

Any precipitation

Si Mahosot gets around 480 mm of rain over 50 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 6 km/h across fall.

Sunrise & sunset in Fall

DaylightNight

Daylight runs from about 12 h 18 min in early September to 11 h 12 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 4.6 kWh/m².

Planning a trip in fall

Hazard calendar for Si Mahosot

In seasonPeak

In fall, Si Mahosot overlaps its pacific typhoon and monsoon season. The full year is below, with each hazard's peak months called out.

Si Mahosot sits in the Pacific typhoon belt; the season peaks July–October.

Si Mahosot's monsoon runs May–October, when most of the year's rain falls.

Pacific typhoon

Monsoon

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is fall a good time to visit Si Mahosot?

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.

3.5

Sightseeing

2nd-best month of the year

5.4

Beach & pool

2nd-best month of the year

fall is a weaker month for outdoor sightseeing in Si Mahosot.

What to pack for Si Mahosot in Fall

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

In fall, Si Mahosot sees daytime highs around 32°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 50 days see rain.

light clothesrain gearsun protection

UV index in Si Mahosot 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 Si Mahosot peaks around August 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 at about 9 (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	12	11	12	13	13	12	11	9	9
Level	Very high	Extreme	Extreme	Extreme	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	12	Extreme
May	11	Extreme
Jun	12	Extreme
Jul	13	Extreme
Aug	13	Extreme
Sep	12	Extreme
Oct	11	Extreme
Nov	9	Very high
Dec	9	Very high

Air quality in Si Mahosot 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 Si Mahosot is worst in February — around 60 µg/m³ PM2.5 (unhealthy), about 1.7× the cleanest month (December, 34 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	53	60	56	48	40	35	35	36	40	41	36	34
Level	Poor	Unhealthy	Unhealthy	Poor	Poor	Moderate	Poor	Poor	Poor	Poor	Poor	Moderate

	PM2.5 (µg/m³)	Level
Jan	53	Poor
Feb	60	Unhealthy
Mar	56	Unhealthy
Apr	48	Poor
May	40	Poor
Jun	35	Moderate
Jul	35	Poor
Aug	36	Poor
Sep	40	Poor
Oct	41	Poor
Nov	36	Poor
Dec	34	Moderate

Location & terrain

Where is Si Mahosot?

Si Mahosot sits at 13.9°N, 101.4°E, 10 m above sea level, in Thailand. The nearest listed city is Si Maha Phot, 15 km away.

Topography around Si Mahosot

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

Within 3 km, the terrain around Si Mahosot has only modest variations in elevation — a maximum elevation change of 27 m around an average of 8 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 61 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,411 m.

The land around Si Mahosot is covered by cropland (53%) and trees (26%) within 3 km, cropland (49%) and trees (23%) within 16 km, and trees (55%) and cropland (30%) within 80 km.

3 km

27 m

cropland 53%

16 km

61 m

cropland 49%

80 km

1,411 m

trees 55%

treesgrasslandcroplandartificial surfacesbare terrainwater

← Summer Si Mahosot year-round climate Winter →

Fall weather nearby: Si Maha Phot 15 km · Phanom Sarakham 17 km · Prachin Buri 18 km · Prachin Buri Town 19 km · Thambon Na Mueang 19 km · Prachantakham 23 km · Ban Phra 23 km · Ban Sang 23 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 Si Mahosot (13.8878°, 101.405°, elevation 10 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.