Caotun in Fall
In fall (September, October and November), Caotun sees average daytime highs around 28°C and overnight lows near 20°C, with 368 mm of rain over about 40 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 30°C in early September to 24°C by late November. The sky is clear or mostly clear about 39% of the time across fall, and the air most often feels oppressive.
Fall is Caotun's 3rd-best season to visit on our travel score. For the whole year in context, see Caotun's year-round climate.
- Avg daytime high
- 28°C
- 2nd-warmest season
- Avg overnight low
- 20°C
- Rainfall
- 368 mm
- 40 wet days
- Avg wind
- 5 km/h
- Travel score
- 5.9
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in Caotun in Fall
Over the season highs ease from about 30°C in early September to 24°C by late November.
A typical fall day in Caotun reaches about 28°C and drops to 20°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Caotun
Once humidity and wind are folded in, fall brings about 19 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.
Caotun 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 | 21° / 13° | 59 | 9.8 | 10.7 | 6.7 |
| Feb | 21° / 14° | 75 | 10.6 | 11.2 | 6.5 |
| Mar | 23° / 16° | 99 | 12.4 | 11.8 | 6.6 |
| Apr | 26° / 19° | 115 | 13.5 | 12.5 | 6.2 |
| May | 28° / 21° | 165 | 17.3 | 13.1 | 5.0 |
| Jun | 29° / 23° | 215 | 19.7 | 13.5 | 3.8 |
| Jul | 30° / 23° | 309 | 22.4 | 13.3 | 3.4 |
| Aug | 30° / 23° | 384 | 25.8 | 12.8 | 3.2 |
| Sep | 29° / 23° | 230 | 21.3 | 12.1 | 3.9 |
| Oct | 28° / 21° | 92 | 11.1 | 11.4 | 6.2 |
| Nov | 26° / 18° | 46 | 7.1 | 10.8 | 7.5 |
| Dec | 22° / 15° | 56 | 8.3 | 10.5 | 7.4 |
Cloud cover in Fall
The sky is clear or mostly clear about 39% of the time across fall.
Chance of precipitation in Fall
Caotun gets around 368 mm of rain over 40 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 5 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 30 min in early September to 10 h 36 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 4.3 kWh/m².
Hazard calendar for Caotun
In fall, Caotun overlaps its pacific typhoon and monsoon season. The full year is below, with each hazard's peak months called out.
Caotun sits in the Pacific typhoon belt; the season peaks July–October.
Caotun's monsoon runs June–September, when most of the year's rain falls.
Is fall a good time to visit Caotun?
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 Caotun for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Caotun in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Caotun sees daytime highs around 28°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 40 days see rain.
Sea temperature near Caotun in Fall
The nearest coast averages about 26°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 36 km away) is warmest in August at about 29°C and coldest in January near 19°C.
It's comfortable for a long swim from Feb 21 to Jan 4 — about 10.5 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 19 | 20 | 22 | 24 | 26 | 28 | 28 | 29 | 28 | 26 | 24 | 21 |
| Comfort | Cool | Cool | Refreshing | Warm | Warm | Warm | Tropical | Tropical | Warm | Warm | Warm | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 19 | Cool |
| Feb | 20 | Cool |
| Mar | 22 | Refreshing |
| Apr | 24 | Warm |
| May | 26 | Warm |
| Jun | 28 | Warm |
| Jul | 28 | Tropical |
| Aug | 29 | Tropical |
| Sep | 28 | Warm |
| Oct | 26 | Warm |
| Nov | 24 | Warm |
| Dec | 21 | Refreshing |
UV index in Caotun in Fall
Clear-sky midday UV across fall averages around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Caotun peaks around June 16 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 6 (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) | 6 | 8 | 10 | 9 | 11 | 13 | 11 | 12 | 10 | 8 | 7 | 6 |
| Level | High | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 8 | Very high |
| Mar | 10 | Very high |
| Apr | 9 | Very high |
| May | 11 | Extreme |
| Jun | 13 | Extreme |
| Jul | 11 | Extreme |
| Aug | 12 | Extreme |
| Sep | 10 | Very high |
| Oct | 8 | Very high |
| Nov | 7 | Very high |
| Dec | 6 | High |
Air quality in Caotun 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 Caotun is worst in March — around 56 µg/m³ PM2.5 (unhealthy), about 1.7× the cleanest month (July, 33 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) | 45 | 48 | 56 | 50 | 41 | 34 | 33 | 36 | 41 | 38 | 41 | 39 |
| Level | Poor | Poor | Unhealthy | Poor | Poor | Moderate | Moderate | Poor | Poor | Poor | Poor | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 45 | Poor |
| Feb | 48 | Poor |
| Mar | 56 | Unhealthy |
| Apr | 50 | Poor |
| May | 41 | Poor |
| Jun | 34 | Moderate |
| Jul | 33 | Moderate |
| Aug | 36 | Poor |
| Sep | 41 | Poor |
| Oct | 38 | Poor |
| Nov | 41 | Poor |
| Dec | 39 | Poor |
Where is Caotun?
Caotun sits at 24.0°N, 120.7°E, 107 m above sea level, in Taiwan. The nearest listed city is Zhongxing New Village, 2.0 km away.
Topography around Caotun
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Caotun.
Within 3 km, the terrain around Caotun has only modest variations in elevation — a maximum elevation change of 246 m around an average of 127 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,139 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,887 m.
The land around Caotun is covered by trees (34%), artificial surfaces (34%) and cropland (30%) within 3 km, trees (64%) within 16 km, and trees (57%) and water (23%) within 80 km.
Taiwan travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B
- 110 / 220 V · 60 Hz
- Happiness
- 6.7 / 10
- World Happiness, 2025
- 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 Caotun (23.977°, 120.6877°, elevation 107 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.