Si Sa Ket in Winter
In winter (December, January and February), Si Sa Ket sees average daytime highs around 32°C and overnight lows near 20°C, with 19 mm of rain over about 4 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 31°C in early December to 34°C by late February. The sky is clear or mostly clear about 58% of the time across winter, and the air most often feels humid.
Winter is Si Sa Ket's best season of the year to visit on our travel score. For the whole year in context, see Si Sa Ket's year-round climate.
- Avg daytime high
- 32°C
- 3rd-warmest season
- Avg overnight low
- 20°C
- Rainfall
- 19 mm
- 4 wet days
- Avg wind
- 11 km/h
- Travel score
- 5.2
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Si Sa Ket in Winter
Over the season highs climb from about 31°C in early December to 34°C by late February.
A typical winter day in Si Sa Ket reaches about 32°C and drops to 20°C overnight. The warmest of the three months is February, the coolest January.
How winter really feels in Si Sa Ket
Once humidity and wind are folded in, winter brings about 33 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.
Si Sa Ket 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 | 31° / 19° | 4 | 1.1 | 11.2 | 5.5 |
| Feb | 33° / 21° | 7 | 1.7 | 11.5 | 4.3 |
| Mar | 35° / 24° | 29 | 6 | 11.9 | 2.7 |
| Apr | 36° / 26° | 66 | 11.4 | 12.3 | 1.9 |
| May | 35° / 26° | 134 | 20.3 | 12.7 | 1.9 |
| Jun | 34° / 26° | 144 | 20.2 | 12.9 | 2.2 |
| Jul | 33° / 26° | 171 | 23.3 | 12.8 | 2.4 |
| Aug | 32° / 25° | 218 | 24.9 | 12.5 | 2.4 |
| Sep | 32° / 25° | 250 | 24.4 | 12.1 | 2.6 |
| Oct | 31° / 24° | 121 | 14.9 | 11.7 | 3.8 |
| Nov | 31° / 22° | 32 | 4.3 | 11.3 | 5.1 |
| Dec | 30° / 20° | 7 | 1.6 | 11.1 | 5.9 |
Cloud cover in Winter
The sky is clear or mostly clear about 58% of the time across winter.
Chance of precipitation in Winter
Si Sa Ket gets around 19 mm of rain over 4 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 11 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 5.2 kWh/m².
Hazard calendar for Si Sa Ket
None of Si Sa Ket's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Si Sa Ket's monsoon runs May–October, when most of the year's rain falls.
Is winter a good time to visit Si Sa Ket?
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 Si Sa Ket for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Si Sa Ket in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Si Sa Ket sees daytime highs around 32°C and nights near 20°C. Pack light clothes. Worth having: sun protection.
UV index in Si Sa Ket 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 Si Sa Ket peaks around August 12 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 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 | 11 | 11 | 11 | 12 | 13 | 13 | 11 | 11 | 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 | 11 | Extreme |
| Apr | 11 | Extreme |
| May | 11 | Extreme |
| Jun | 12 | Extreme |
| Jul | 13 | Extreme |
| Aug | 13 | Extreme |
| Sep | 11 | Extreme |
| Oct | 11 | Extreme |
| Nov | 8 | Very high |
| Dec | 8 | Very high |
Air quality in Si Sa Ket 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 Si Sa Ket is worst in March — around 58 µg/m³ PM2.5 (unhealthy), about 3.1× the cleanest month (December, 19 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) | 29 | 45 | 58 | 43 | 28 | 21 | 23 | 23 | 27 | 28 | 22 | 19 |
| Level | Moderate | Poor | Unhealthy | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 29 | Moderate |
| Feb | 45 | Poor |
| Mar | 58 | Unhealthy |
| Apr | 43 | Poor |
| May | 28 | Moderate |
| Jun | 21 | Moderate |
| Jul | 23 | Moderate |
| Aug | 23 | Moderate |
| Sep | 27 | Moderate |
| Oct | 28 | Moderate |
| Nov | 22 | Moderate |
| Dec | 19 | Moderate |
Where is Si Sa Ket?
Si Sa Ket sits at 15.1°N, 104.3°E, 134 m above sea level, in Thailand. The nearest listed city is Ubon Ratchathani, 57 km away.
Topography around Si Sa Ket
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Si Sa Ket.
Within 3 km, the terrain around Si Sa Ket has only modest variations in elevation — a maximum elevation change of 32 m around an average of 126 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 45 m; within 80 km, significant variations in elevation — a maximum elevation change of 557 m.
The land around Si Sa Ket is covered by trees (47%) and artificial surfaces (31%) within 3 km, cropland (70%) within 16 km, and cropland (71%) and trees (25%) 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 Si Sa Ket (15.1148°, 104.3294°, elevation 134 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.