Tachilek in Fall
In fall (September, October and November), Tachilek sees average daytime highs around 30°C and overnight lows near 21°C, with 467 mm of rain over about 48 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 31°C in early September to 28°C by late November. The sky is clear or mostly clear about 35% of the time across fall, and the air most often feels oppressive.
Fall is Tachilek's 2nd-best season to visit on our travel score. For the whole year in context, see Tachilek's year-round climate.
- Avg daytime high
- 30°C
- 3rd-warmest season
- Avg overnight low
- 21°C
- Rainfall
- 467 mm
- 48 wet days
- Avg wind
- 3 km/h
- Travel score
- 4.6
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Tachilek in Fall
Over the season highs ease from about 31°C in early September to 28°C by late November.
A typical fall day in Tachilek reaches about 30°C and drops to 21°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Tachilek
Once humidity and wind are folded in, fall brings about 55 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.
Tachilek 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° / 14° | 25 | 3.4 | 10.9 | 7.9 |
| Feb | 30° / 14° | 15 | 2.5 | 11.3 | 6.1 |
| Mar | 33° / 17° | 39 | 5.1 | 11.9 | 4.2 |
| Apr | 34° / 21° | 112 | 10.8 | 12.5 | 3.2 |
| May | 33° / 23° | 277 | 21.2 | 13 | 2.8 |
| Jun | 32° / 24° | 349 | 26.7 | 13.2 | 2.4 |
| Jul | 31° / 24° | 455 | 28.6 | 13.1 | 2.5 |
| Aug | 31° / 24° | 424 | 28.8 | 12.7 | 2.5 |
| Sep | 31° / 23° | 287 | 24.3 | 12.1 | 3.0 |
| Oct | 30° / 22° | 134 | 16.6 | 11.5 | 4.3 |
| Nov | 29° / 18° | 47 | 6.6 | 11 | 6.6 |
| Dec | 26° / 15° | 31 | 4.3 | 10.8 | 7.9 |
Cloud cover in Fall
The sky is clear or mostly clear about 35% of the time across fall.
Chance of precipitation in Fall
Tachilek gets around 467 mm of rain over 48 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 Tachilek
In fall, Tachilek overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Tachilek's monsoon runs May–September, when most of the year's rain falls.
Is fall a good time to visit Tachilek?
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 Tachilek for sightseeing.
What to pack for Tachilek in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Tachilek sees daytime highs around 30°C and nights near 21°C. Pack light clothes and rain gear. About 48 days see rain.
UV index in Tachilek 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 Tachilek peaks around July 19 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 | High | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 7 | 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 | Extreme |
| Nov | 8 | Very high |
| Dec | 7 | High |
Air quality in Tachilek 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 Tachilek 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 Tachilek?
Tachilek sits at 20.4°N, 99.9°E, 402 m above sea level, in Myanmar. The nearest listed city is Mae Sai, 2.0 km away.
Topography around Tachilek
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Tachilek.
Within 3 km, the terrain around Tachilek has significant variations in elevation — a maximum elevation change of 368 m around an average of 459 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,235 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,977 m.
The land around Tachilek is covered by trees (49%) and artificial surfaces (34%) within 3 km, trees (62%) and cropland (25%) within 16 km, and trees (81%) within 80 km.
Myanmar travel facts
- Travel advisory
- Level 4
- Do Not Travel
- Power plugs
- Type A / C / D / F / G / I
- 230 V · 50 Hz
- Prices
- ≈ 38% of US
- price level, 2025
- GDP per capita
- $1,489
- 2025
- Happiness
- 4.3 / 10
- World Happiness, 2025
- Safe drinking water
- 60%
- of population, 2024
- Homicide rate
- 2.6
- per 100k, 2023
- Road deaths
- 20.4
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- Very low
- EF EPI 444
- 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 Tachilek (20.4475°, 99.8808°, elevation 402 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.