Chai Nat in Winter
In winter (December, January and February), Chai Nat sees average daytime highs around 33°C and overnight lows near 22°C, with 32 mm of rain over about 6 wet days across the season. It is the 3rd-warmest season and the driest season of the year.
Over the season highs climb from about 32°C in early December to 36°C by late February. The sky is clear or mostly clear about 59% of the time across winter, and the air most often feels muggy.
Winter is Chai Nat's best season of the year to visit on our travel score. For the whole year in context, see Chai Nat's year-round climate.
- Avg daytime high
- 33°C
- 3rd-warmest season
- Avg overnight low
- 22°C
- Rainfall
- 32 mm
- 6 wet days
- Avg wind
- 7 km/h
- Travel score
- 4.3
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Chai Nat in Winter
Over the season highs climb from about 32°C in early December to 36°C by late February.
A typical winter day in Chai Nat reaches about 33°C and drops to 22°C overnight. The warmest of the three months is February, the coolest January.
How winter really feels in Chai Nat
Once humidity and wind are folded in, winter brings about 81 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.
Chai Nat 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 | 33° / 21° | 10 | 2.2 | 11.2 | 4.6 |
| Feb | 35° / 23° | 12 | 2.1 | 11.5 | 3.2 |
| Mar | 37° / 25° | 39 | 6.6 | 11.9 | 1.8 |
| Apr | 38° / 27° | 78 | 12.8 | 12.3 | 1.1 |
| May | 36° / 27° | 151 | 21.7 | 12.7 | 1.3 |
| Jun | 36° / 27° | 124 | 22.1 | 12.9 | 1.5 |
| Jul | 35° / 27° | 137 | 22.9 | 12.8 | 1.7 |
| Aug | 34° / 26° | 179 | 24.1 | 12.5 | 1.9 |
| Sep | 33° / 26° | 260 | 25.5 | 12.1 | 2.0 |
| Oct | 32° / 25° | 179 | 18.8 | 11.7 | 3.0 |
| Nov | 32° / 23° | 32 | 5.2 | 11.3 | 4.4 |
| Dec | 32° / 21° | 9 | 1.7 | 11.1 | 5.2 |
Cloud cover in Winter
The sky is clear or mostly clear about 59% of the time across winter.
Chance of precipitation in Winter
Chai Nat gets around 32 mm of rain over 6 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 7 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 11 h 12 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 5.1 kWh/m².
Hazard calendar for Chai Nat
None of Chai Nat's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Chai Nat's monsoon runs May–October, when most of the year's rain falls.
Is winter a good time to visit Chai Nat?
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 Chai Nat for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Chai Nat in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Chai Nat sees daytime highs around 33°C and nights near 22°C. Pack light clothes. Worth having: sun protection. About 6 days see rain.
UV index in Chai Nat 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 Chai Nat peaks around August 15 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 8 (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 | 12 | 11 | 11 | 12 | 13 | 14 | 12 | 10 | 8 | 8 |
| 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 | 12 | Extreme |
| Apr | 11 | Extreme |
| May | 11 | Extreme |
| Jun | 12 | Extreme |
| Jul | 13 | Extreme |
| Aug | 14 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Extreme |
| Nov | 8 | Very high |
| Dec | 8 | Very high |
Air quality in Chai Nat 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 Chai Nat is worst in March — around 56 µg/m³ PM2.5 (unhealthy), about 3.3× the cleanest month (June, 17 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) | 39 | 48 | 56 | 40 | 26 | 17 | 18 | 19 | 22 | 28 | 28 | 30 |
| Level | Poor | Poor | Unhealthy | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 39 | Poor |
| Feb | 48 | Poor |
| Mar | 56 | Unhealthy |
| Apr | 40 | Poor |
| May | 26 | Moderate |
| Jun | 17 | Moderate |
| Jul | 18 | Moderate |
| Aug | 19 | Moderate |
| Sep | 22 | Moderate |
| Oct | 28 | Moderate |
| Nov | 28 | Moderate |
| Dec | 30 | Moderate |
Where is Chai Nat?
Chai Nat sits at 15.2°N, 100.1°E, 26 m above sea level, in Thailand. The nearest listed city is Uthai Thani, 24 km away.
Topography around Chai Nat
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Chai Nat.
Within 3 km, the terrain around Chai Nat has only modest variations in elevation — a maximum elevation change of 107 m around an average of 19 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 233 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,204 m.
The land around Chai Nat is covered by cropland (36%) and trees (35%) within 3 km, cropland (74%) within 16 km, and cropland (79%) 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 Chai Nat (15.1864°, 100.1235°, elevation 26 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.