Tha Mai in Winter
In winter (December, January and February), Tha Mai sees average daytime highs around 29°C and overnight lows near 24°C, with 78 mm of rain over about 18 wet days across the season. It is the 3rd-warmest season and the driest season of the year.
Across winter, daytime highs hold fairly steady around 29°C. The sky is clear or mostly clear about 47% of the time across winter, and the air most often feels oppressive.
Winter is Tha Mai's best season of the year to visit on our travel score. Tha Mai 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 Tha Mai's year-round climate.
- Avg daytime high
- 29°C
- 3rd-warmest season
- Avg overnight low
- 24°C
- Rainfall
- 78 mm
- 18 wet days
- Avg wind
- 10 km/h
- Travel score
- 6.0
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Tha Mai in Winter
Across winter, daytime highs hold fairly steady around 29°C.
A typical winter day in Tha Mai reaches about 29°C and drops to 24°C overnight. The warmest of the three months is December, the coolest December.
How winter really feels in Tha Mai
Once humidity and wind are folded in, winter brings about 69 days that feel above 32°C and 0 that feel at or below 0°C.
The story in winter is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Tha Mai weather by month
How the three winter months (December, January and February) 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 | 29° / 24° | 29 | 6.3 | 11.3 | 6.1 |
| Feb | 29° / 25° | 33 | 8.2 | 11.6 | 5.7 |
| Mar | 30° / 26° | 85 | 15.1 | 11.9 | 4.7 |
| Apr | 30° / 27° | 122 | 18.8 | 12.3 | 3.8 |
| May | 30° / 27° | 320 | 28.2 | 12.6 | 2.8 |
| Jun | 30° / 27° | 384 | 28.4 | 12.7 | 2.8 |
| Jul | 29° / 27° | 369 | 29.6 | 12.7 | 2.8 |
| Aug | 29° / 27° | 328 | 29.2 | 12.4 | 2.9 |
| Sep | 29° / 26° | 363 | 28.8 | 12.1 | 2.9 |
| Oct | 30° / 26° | 238 | 23 | 11.7 | 3.5 |
| Nov | 30° / 25° | 46 | 8 | 11.4 | 5.2 |
| Dec | 30° / 24° | 16 | 3.2 | 11.3 | 6.2 |
Cloud cover in Winter
The sky is clear or mostly clear about 47% of the time across winter.
Chance of precipitation in Winter
Tha Mai gets around 78 mm of rain over 18 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 10 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 11 h 18 min in early December to 11 h 42 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 5.3 kWh/m².
Hazard calendar for Tha Mai
In winter, Tha Mai overlaps its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Tha Mai sits in the Pacific typhoon belt; the season peaks July–October.
Tha Mai's monsoon runs May–October, when most of the year's rain falls.
Is winter a good time to visit Tha Mai?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a reasonable time to visit Tha Mai for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Tha Mai in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Tha Mai sees daytime highs around 29°C and nights near 24°C. Pack light clothes. Worth having: rain gear and sun protection. About 18 days see rain.
Sea temperature near Tha Mai in Winter
The nearest coast averages about 28°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 14 km away) is warmest in May at about 31°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 | 31 | 30 | 29 | 29 | 29 | 29 | 29 | 28 |
| Comfort | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Warm |
| Feb | 28 | Tropical |
| Mar | 29 | Tropical |
| Apr | 30 | Tropical |
| May | 31 | Tropical |
| Jun | 30 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 28 | Tropical |
UV index in Tha Mai in Winter
Clear-sky midday UV across winter averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Tha Mai peaks around August 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 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 | 10 | 13 | 13 | 12 | 12 | 12 | 14 | 12 | 11 | 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 | 10 | Very high |
| Mar | 13 | Extreme |
| Apr | 13 | Extreme |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 14 | Extreme |
| Sep | 12 | Extreme |
| Oct | 11 | Extreme |
| Nov | 9 | Very high |
| Dec | 9 | Very high |
Air quality in Tha Mai in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Tha Mai is worst in February — around 32 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (August, 14 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) | 26 | 32 | 27 | 22 | 16 | 14 | 15 | 14 | 15 | 18 | 16 | 16 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 26 | Moderate |
| Feb | 32 | Moderate |
| Mar | 27 | Moderate |
| Apr | 22 | Moderate |
| May | 16 | Moderate |
| Jun | 14 | Moderate |
| Jul | 15 | Moderate |
| Aug | 14 | Moderate |
| Sep | 15 | Moderate |
| Oct | 18 | Moderate |
| Nov | 16 | Moderate |
| Dec | 16 | Moderate |
Where is Tha Mai?
Tha Mai sits at 12.6°N, 102.0°E, 4 m above sea level, in Thailand. The nearest listed city is Chanthaburi, 11 km away.
Topography around Tha Mai
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Tha Mai.
Within 3 km, the terrain around Tha Mai has only modest variations in elevation — a maximum elevation change of 63 m around an average of 11 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 559 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,603 m.
The land around Tha Mai is covered by trees (61%) within 3 km, trees (52%) and water (23%) within 16 km, and trees (60%) and water (30%) 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 Tha Mai (12.6219°, 102.0048°, elevation 4 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.