Ko Tao in Fall
In fall (September, October and November), Ko Tao sees average daytime highs around 28°C and overnight lows near 26°C, with 714 mm of rain over about 67 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 28°C. The sky is clear or mostly clear about 11% of the time across fall, and the air most often feels oppressive.
Fall is Ko Tao's 3rd-best season to visit on our travel score. Ko Tao has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Ko Tao's year-round climate.
- Avg daytime high
- 28°C
- 3rd-warmest season
- Avg overnight low
- 26°C
- Rainfall
- 714 mm
- 67 wet days
- Avg wind
- 17 km/h
- Travel score
- 4.2
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in Ko Tao in Fall
Across fall, daytime highs hold fairly steady around 28°C.
A typical fall day in Ko Tao reaches about 28°C and drops to 26°C overnight. The warmest of the three months is September, the coolest October.
How fall really feels in Ko Tao
Once humidity and wind are folded in, fall brings about 26 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.
Ko Tao 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 | 27° / 26° | 72 | 8.2 | 11.5 | 6.9 |
| Feb | 28° / 27° | 30 | 4.4 | 11.7 | 7.4 |
| Mar | 28° / 27° | 87 | 8.4 | 11.9 | 6.3 |
| Apr | 29° / 28° | 97 | 12.7 | 12.2 | 5.1 |
| May | 29° / 28° | 150 | 22.3 | 12.5 | 3.7 |
| Jun | 29° / 27° | 127 | 20.4 | 12.6 | 3.8 |
| Jul | 29° / 27° | 115 | 20.1 | 12.5 | 4.0 |
| Aug | 29° / 27° | 121 | 19.6 | 12.3 | 4.2 |
| Sep | 28° / 27° | 168 | 23 | 12.1 | 3.8 |
| Oct | 28° / 26° | 290 | 25.2 | 11.8 | 4.0 |
| Nov | 28° / 26° | 256 | 19.1 | 11.5 | 4.8 |
| Dec | 27° / 26° | 122 | 11 | 11.4 | 6.2 |
Cloud cover in Fall
The sky is clear or mostly clear about 11% of the time across fall.
Chance of precipitation in Fall
Ko Tao gets around 714 mm of rain over 67 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 17 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 12 min in early September to 11 h 30 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 4.7 kWh/m².
Hazard calendar for Ko Tao
In fall, Ko Tao overlaps its cyclone and rainy season season. The full year is below, with each hazard's peak months called out.
Ko Tao sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.
Ko Tao's rainy season runs May–May, when most of the year's rain falls.
Is fall a good time to visit Ko Tao?
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 reasonable time to visit Ko Tao for sightseeing.
What to pack for Ko Tao in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Ko Tao sees daytime highs around 28°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 67 days see rain.
Sea temperature near Ko Tao 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 offshore is warmest in May at about 30°C and coldest in January near 28°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) | 28 | 28 | 29 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 28 |
| Comfort | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Warm |
| Feb | 28 | Tropical |
| Mar | 29 | Tropical |
| Apr | 30 | Tropical |
| May | 30 | Tropical |
| Jun | 30 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 28 | Warm |
UV index in Ko Tao in Fall
Clear-sky midday UV across fall averages 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 Ko Tao peaks around August 20 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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) | 10 | 12 | 13 | 13 | 12 | 12 | 12 | 14 | 13 | 11 | 10 | 9 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Very high |
| Feb | 12 | Extreme |
| Mar | 13 | Extreme |
| Apr | 13 | Extreme |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 14 | Extreme |
| Sep | 13 | Extreme |
| Oct | 11 | Extreme |
| Nov | 10 | Extreme |
| Dec | 9 | Very high |
Air quality in Ko Tao 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 Ko Tao is worst in January — around 16 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 16 | 15 | 13 | 14 | 13 | 14 | 15 | 12 | 12 | 11 | 10 | 12 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 16 | Moderate |
| Feb | 15 | Moderate |
| Mar | 13 | Moderate |
| Apr | 14 | Moderate |
| May | 13 | Moderate |
| Jun | 14 | Moderate |
| Jul | 15 | Moderate |
| Aug | 12 | Good |
| Sep | 12 | Good |
| Oct | 11 | Good |
| Nov | 10 | Good |
| Dec | 12 | Moderate |
Where is Ko Tao?
Ko Tao sits at 10.1°N, 99.8°E, 0 m above sea level, in Thailand. The nearest listed city is Ko Pha-ngan, 43 km away.
Topography around Ko Tao
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ko Tao.
Within 3 km, the terrain around Ko Tao has significant variations in elevation — a maximum elevation change of 368 m around an average of 60 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 368 m; within 80 km, large variations in elevation — a maximum elevation change of 621 m.
The land around Ko Tao is covered by water (49%) and trees (47%) within 3 km, water (98%) within 16 km, and water (95%) 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 Ko Tao (10.0917°, 99.8377°, elevation 0 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.