Pai in Winter
In winter (December, January and February), Pai sees average daytime highs around 28°C and overnight lows near 13°C, with 38 mm of rain over about 7 wet days across the season. It is the coldest season of the year and the driest season of the year.
Over the season highs climb from about 26°C in early December to 31°C by late February. The sky is clear or mostly clear about 68% of the time across winter, and the air most often feels dry.
Winter is Pai's best season of the year to visit on our travel score. For the whole year in context, see Pai's year-round climate.
- Avg daytime high
- 28°C
- coldest season of the year
- Avg overnight low
- 13°C
- Rainfall
- 38 mm
- 7 wet days
- Avg wind
- 4 km/h
- Travel score
- 7.7
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Pai in Winter
Over the season highs climb from about 26°C in early December to 31°C by late February.
A typical winter day in Pai reaches about 28°C and drops to 13°C overnight. The warmest of the three months is February, the coolest January.
How winter really feels in Pai
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
winter sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Pai 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 | 27° / 12° | 16 | 2.4 | 11 | 8.2 |
| Feb | 30° / 13° | 7 | 1.4 | 11.3 | 6.6 |
| Mar | 32° / 16° | 21 | 3.3 | 11.9 | 4.8 |
| Apr | 33° / 20° | 60 | 7.7 | 12.4 | 3.7 |
| May | 31° / 21° | 193 | 20.7 | 12.9 | 3.3 |
| Jun | 29° / 22° | 221 | 25.4 | 13.1 | 3.1 |
| Jul | 29° / 22° | 287 | 27.7 | 13.1 | 3.2 |
| Aug | 28° / 21° | 321 | 29 | 12.7 | 3.1 |
| Sep | 29° / 21° | 248 | 25.6 | 12.1 | 3.4 |
| Oct | 28° / 20° | 116 | 17.6 | 11.6 | 4.9 |
| Nov | 27° / 17° | 37 | 6.6 | 11.1 | 7.2 |
| Dec | 26° / 14° | 16 | 3.2 | 10.9 | 8.2 |
Cloud cover in Winter
The sky is clear or mostly clear about 68% of the time across winter.
Chance of precipitation in Winter
Pai gets around 38 mm of rain over 7 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 4 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 h 54 min in early December to 11 h 36 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 4.9 kWh/m².
Hazard calendar for Pai
None of Pai's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Pai's monsoon runs May–September, when most of the year's rain falls.
Is winter a good time to visit Pai?
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 one of the better times to visit Pai for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Pai in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Pai sees daytime highs around 28°C and nights near 13°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.
UV index in Pai in Winter
Clear-sky midday UV across winter 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 Pai peaks around August 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 7 (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) | 8 | 10 | 10 | 10 | 12 | 12 | 13 | 14 | 12 | 11 | 9 | 7 |
| Level | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 10 | Very high |
| Mar | 10 | Very high |
| Apr | 10 | Extreme |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 13 | Extreme |
| Aug | 14 | Extreme |
| Sep | 12 | Extreme |
| Oct | 11 | Extreme |
| Nov | 9 | Very high |
| Dec | 7 | Very high |
Air quality in Pai 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 Pai is worst in March — around 90 µg/m³ PM2.5 (unhealthy), about 9.6× the cleanest month (October, 9 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) | 14 | 35 | 90 | 57 | 20 | 11 | 10 | 10 | 10 | 9 | 9 | 11 |
| Level | Moderate | Moderate | Unhealthy | Unhealthy | Moderate | Good | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 14 | Moderate |
| Feb | 35 | Moderate |
| Mar | 90 | Unhealthy |
| Apr | 57 | Unhealthy |
| May | 20 | Moderate |
| Jun | 11 | Good |
| Jul | 10 | Good |
| Aug | 10 | Good |
| Sep | 10 | Good |
| Oct | 9 | Good |
| Nov | 9 | Good |
| Dec | 11 | Good |
Where is Pai?
Pai sits at 19.4°N, 98.4°E, 0 m above sea level, in Thailand. The nearest listed city is Chiang Mai, 86 km away.
Topography around Pai
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Pai.
Within 3 km, the terrain around Pai has significant variations in elevation — a maximum elevation change of 444 m around an average of 563 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,543 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,997 m.
The land around Pai is covered by trees (48%), grassland (23%) and cropland (21%) within 3 km, trees (86%) within 16 km, and trees (91%) 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 Pai (19.3617°, 98.4397°, elevation 0 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.