Mae Chan in Fall
In fall (September, October and November), Mae Chan sees average daytime highs around 29°C and overnight lows near 20°C, with 468 mm of rain over about 49 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 30°C in early September to 27°C by late November. The sky is clear or mostly clear about 32% of the time across fall, and the air most often feels oppressive.
Fall is Mae Chan's 2nd-best season to visit on our travel score. For the whole year in context, see Mae Chan's year-round climate.
- Avg daytime high
- 29°C
- 3rd-warmest season
- Avg overnight low
- 20°C
- Rainfall
- 468 mm
- 49 wet days
- Avg wind
- 3 km/h
- Travel score
- 4.8
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Mae Chan in Fall
Over the season highs ease from about 30°C in early September to 27°C by late November.
A typical fall day in Mae Chan reaches about 29°C and drops to 20°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Mae Chan
Once humidity and wind are folded in, fall brings about 44 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.
Mae Chan 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° / 13° | 23 | 2.9 | 10.9 | 8.0 |
| Feb | 30° / 14° | 14 | 2.3 | 11.3 | 6.3 |
| Mar | 33° / 17° | 39 | 5.1 | 11.9 | 4.5 |
| Apr | 33° / 20° | 122 | 11.7 | 12.4 | 3.3 |
| May | 32° / 23° | 282 | 22.2 | 12.9 | 2.9 |
| Jun | 31° / 24° | 324 | 26.7 | 13.2 | 2.5 |
| Jul | 30° / 24° | 422 | 29 | 13.1 | 2.6 |
| Aug | 30° / 23° | 393 | 29.2 | 12.7 | 2.6 |
| Sep | 30° / 23° | 286 | 25.1 | 12.1 | 3.1 |
| Oct | 29° / 21° | 134 | 17.5 | 11.5 | 4.5 |
| Nov | 28° / 18° | 48 | 6.3 | 11 | 6.9 |
| Dec | 26° / 14° | 27 | 3.7 | 10.8 | 8.1 |
Cloud cover in Fall
The sky is clear or mostly clear about 32% of the time across fall.
Chance of precipitation in Fall
Mae Chan gets around 468 mm of rain over 49 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 3 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 24 min in early September to 10 h 54 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 Mae Chan
In fall, Mae Chan overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Mae Chan's monsoon runs May–September, when most of the year's rain falls.
Is fall a good time to visit Mae Chan?
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 Mae Chan for sightseeing.
What to pack for Mae Chan in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Mae Chan sees daytime highs around 29°C and nights near 20°C. Pack light clothes and rain gear. About 49 days see rain.
UV index in Mae Chan 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 Mae Chan peaks around July 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 7 (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) | 7 | 9 | 9 | 10 | 11 | 13 | 13 | 13 | 11 | 10 | 8 | 7 |
| Level | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 7 | Very high |
| Feb | 9 | Very high |
| Mar | 9 | Very high |
| Apr | 10 | Very high |
| May | 11 | Extreme |
| Jun | 13 | Extreme |
| Jul | 13 | Extreme |
| Aug | 13 | Extreme |
| Sep | 11 | Extreme |
| Oct | 10 | Very high |
| Nov | 8 | Very high |
| Dec | 7 | High |
Air quality in Mae Chan 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 Mae Chan is worst in April — around 156 µg/m³ PM2.5 (very unhealthy), about 12.0× the cleanest month (July, 13 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) | 23 | 40 | 128 | 156 | 37 | 15 | 13 | 13 | 13 | 14 | 15 | 19 |
| Level | Moderate | Poor | Unhealthy | Very unhealthy | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 23 | Moderate |
| Feb | 40 | Poor |
| Mar | 128 | Unhealthy |
| Apr | 156 | Very unhealthy |
| May | 37 | Poor |
| Jun | 15 | Moderate |
| Jul | 13 | Moderate |
| Aug | 13 | Moderate |
| Sep | 13 | Moderate |
| Oct | 14 | Moderate |
| Nov | 15 | Moderate |
| Dec | 19 | Moderate |
Where is Mae Chan?
Mae Chan sits at 20.1°N, 99.9°E, 416 m above sea level, in Thailand. The nearest listed city is Chiang Rai, 27 km away.
Topography around Mae Chan
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mae Chan.
Within 3 km, the terrain around Mae Chan has significant variations in elevation — a maximum elevation change of 372 m around an average of 432 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 898 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,922 m.
The land around Mae Chan is covered by cropland (46%) and trees (34%) within 3 km, trees (65%) and cropland (24%) within 16 km, and trees (74%) 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 Mae Chan (20.1468°, 99.8526°, elevation 416 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.