Khao Yoi in Fall
In fall (September, October and November), Khao Yoi sees average daytime highs around 31°C and overnight lows near 24°C, with 450 mm of rain over about 53 wet days across the season. It is the 3rd-warmest season and the wettest season of the year.
Across fall, daytime highs hold fairly steady around 31°C. The sky is clear or mostly clear about 18% of the time across fall, and the air most often feels oppressive.
Fall is Khao Yoi's 2nd-best season to visit on our travel score. For the whole year in context, see Khao Yoi's year-round climate.
- Avg daytime high
- 31°C
- 3rd-warmest season
- Avg overnight low
- 24°C
- Rainfall
- 450 mm
- 53 wet days
- Avg wind
- 6 km/h
- Travel score
- 3.7
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Khao Yoi in Fall
Across fall, daytime highs hold fairly steady around 31°C.
A typical fall day in Khao Yoi reaches about 31°C and drops to 24°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Khao Yoi
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.
The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Khao Yoi 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° / 21° | 13 | 2.4 | 11.3 | 5.9 |
| Feb | 32° / 23° | 12 | 2.4 | 11.6 | 4.8 |
| Mar | 34° / 24° | 47 | 7.6 | 11.9 | 3.4 |
| Apr | 35° / 26° | 79 | 12.8 | 12.3 | 2.3 |
| May | 34° / 26° | 145 | 23.1 | 12.6 | 2.0 |
| Jun | 33° / 26° | 124 | 21.1 | 12.8 | 2.4 |
| Jul | 32° / 26° | 149 | 22.5 | 12.7 | 2.6 |
| Aug | 32° / 25° | 159 | 23.9 | 12.4 | 2.6 |
| Sep | 32° / 25° | 212 | 24.9 | 12.1 | 2.5 |
| Oct | 31° / 24° | 191 | 21.5 | 11.7 | 3.4 |
| Nov | 31° / 23° | 47 | 6.5 | 11.4 | 5.1 |
| Dec | 30° / 22° | 11 | 2 | 11.2 | 6.1 |
Cloud cover in Fall
The sky is clear or mostly clear about 18% of the time across fall.
Chance of precipitation in Fall
Khao Yoi gets around 450 mm of rain over 53 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels oppressive — 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
Daylight runs from about 12 h 18 min in early September to 11 h 18 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 4.5 kWh/m².
Hazard calendar for Khao Yoi
In fall, Khao Yoi overlaps its cyclone and rainy season season. The full year is below, with each hazard's peak months called out.
Khao Yoi sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.
Khao Yoi's rainy season runs May–October, when most of the year's rain falls.
Is fall a good time to visit Khao Yoi?
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.
fall is a weaker month for outdoor sightseeing in Khao Yoi.
What to pack for Khao Yoi in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Khao Yoi sees daytime highs around 31°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 53 days see rain.
Sea temperature near Khao Yoi in Fall
The nearest coast averages about 29°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 35 km away) is warmest in May at about 31°C and coldest in January near 27°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 27 | 28 | 29 | 30 | 31 | 30 | 30 | 30 | 29 | 29 | 29 | 28 |
| Comfort | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 28 | Warm |
| Mar | 29 | Tropical |
| Apr | 30 | Tropical |
| May | 31 | Tropical |
| Jun | 30 | Tropical |
| Jul | 30 | Tropical |
| Aug | 30 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 28 | Warm |
UV index in Khao Yoi in Fall
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 Khao Yoi peaks around August 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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 | 9 | 13 | 12 | 12 | 12 | 12 | 14 | 12 | 10 | 9 | 9 |
| Level | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 9 | Very high |
| Mar | 13 | Extreme |
| Apr | 12 | Extreme |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 14 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Extreme |
| Nov | 9 | Very high |
| Dec | 9 | Very high |
Air quality in Khao Yoi in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Khao Yoi is worst in February — around 61 µg/m³ PM2.5 (unhealthy), about 2.6× the cleanest month (August, 24 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) | 58 | 61 | 60 | 47 | 33 | 24 | 24 | 24 | 29 | 46 | 48 | 48 |
| Level | Unhealthy | Unhealthy | Unhealthy | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Poor | Poor | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 58 | Unhealthy |
| Feb | 61 | Unhealthy |
| Mar | 60 | Unhealthy |
| Apr | 47 | Poor |
| May | 33 | Moderate |
| Jun | 24 | Moderate |
| Jul | 24 | Moderate |
| Aug | 24 | Moderate |
| Sep | 29 | Moderate |
| Oct | 46 | Poor |
| Nov | 48 | Poor |
| Dec | 48 | Poor |
Where is Khao Yoi?
Khao Yoi sits at 13.2°N, 99.8°E, 13 m above sea level, in Thailand. The nearest listed city is Phetchaburi, 19 km away.
Topography around Khao Yoi
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Khao Yoi.
Within 3 km, the terrain around Khao Yoi has only modest variations in elevation — a maximum elevation change of 82 m around an average of 11 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 564 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,498 m.
The land around Khao Yoi is covered by cropland (44%) and grassland (24%) within 3 km, trees (31%) and cropland (30%) within 16 km, and trees (50%) and water (25%) within 80 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 Khao Yoi (13.2402°, 99.8243°, elevation 13 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.