Si Sa Ket weather in January

In January, Si Sa Ket sees average daytime highs of 31°C and overnight lows near 19°C, with 4 mm of rain across 1.1 wet days and about 11.2 hours of daylight. It is the 9th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 60% of the time in January, and the air most often feels humid.

Daylight stretches from about 11 h 06 min at the start of January to 11 h 18 min by month's end. Set against the rest of the year, January is Si Sa Ket's 2nd-clearest and 6th-windiest month. For the whole year in context, see Si Sa Ket's year-round climate.

Daytime high
31°
9th warmest
Overnight low
19°
1st coldest
Rainfall
4 mm
1.1 wet days
Daylight
11 h 12 min
6:36 AM – 5:48 PM
Cloud cover
37%
2nd clearest
Wind
10 km/h
6th windiest
Solar energy
5.14 kWh/m²
Travel score
5.5
out of 10

Si Sa Ket is town in Si Sa Ket province, Thailand.

Density
1,221/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical January day in Si Sa Ket reaches about 31°C in the afternoon and slips back to 19°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 34°C. Set against its neighbours, January runs about 1°C warmer than December and about 2°C cooler than February.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13119
23119
33119
43119
53119
63119
73119
83119
93119
103119
113119
123119
133119
143119
153119
163119
173119
183119
193119
203119
213119
223119
233219
243219
253219
263219
273219
283219
293219
303219
313220

How January really feels in Si Sa Ket

Once humidity and wind are folded in, January averages 2 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
2
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Si Sa Ket weather by month

How January compares with the rest of the year at a glance. January is the 9th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 19°41.111.25.5
Feb33° / 21°71.711.54.3
Mar35° / 24°29611.92.7
Apr36° / 26°6611.412.31.9
May35° / 26°13420.312.71.9
Jun34° / 26°14420.212.92.2
Jul33° / 26°17123.312.82.4
Aug32° / 25°21824.912.52.4
Sep32° / 25°25024.412.12.6
Oct31° / 24°12114.911.73.8
Nov31° / 22°324.311.35.1
Dec30° / 20°71.611.15.9

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 60% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 16% of January, with mostly cloudy or overcast conditions the remaining 24%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17426
27525
37525
47426
57426
67327
77327
87327
97228
107228
117228
127228
137228
147327
157327
167327
177525
187525
197624
207624
217822
227822
237921
247921
258020
268119
278218
288218
298317
308317
318317

Chance of precipitation in January

Any precipitation

Si Sa Ket gets around 4 mm of rain over 1.1 wet days in January, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 4% and peaks near 4% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
14
24
34
44
54
64
74
84
94
104
114
124
134
144
154
164
174
184
194
204
214
224
234
244
254
264
274
284
294
304
314

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

Most of January feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, January lands in the humid band about 39% of days. Sticky, muggy-or-worse air turns up on roughly 33% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
172239303
262139303
362140303
462140304
562140304
662040294
762040295
862040295
962040285
1072040286
1172040276
1272040276
1372040267
1472040267
1572040257
1682040257
1782040257
1882139257
1982139256
2082139266
2182139266
2282139266
2382238266
2482238266
2582238266
2682237266
2782337266
2892336266
2992436257
3092435257
3192535248

Wind in January

Winds average 10 km/h in January.

Across January, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 06 min at the start of January to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over January. Sunrise moves from 6:32 AM to 6:36 AM, and sunset from 5:39 PM to 5:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.16:325:39
211.16:335:40
311.16:335:40
411.16:335:41
511.16:345:42
611.16:345:42
711.16:345:43
811.16:355:43
911.26:355:44
1011.26:355:44
1111.26:355:45
1211.26:355:46
1311.26:365:46
1411.26:365:47
1511.26:365:47
1611.26:365:48
1711.26:365:48
1811.26:365:49
1911.26:365:49
2011.26:375:50
2111.26:375:51
2211.26:375:51
2311.26:375:52
2411.36:375:52
2511.36:375:53
2611.36:375:53
2711.36:375:54
2811.36:375:54
2911.36:365:55
3011.36:365:55
3111.36:365:56

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.14 kWh/m².

For context, solar energy here swings from a low near 4.42 kWh/m² to a high of 6.13 kWh/m² in April across the year — January's 5.14 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in January

Hazard calendar for Si Sa Ket

In seasonPeak

None of Si Sa Ket's seasonal hazards are active in January. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Si Sa Ket's monsoon runs May–October, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit Si Sa Ket?

Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.5
Sightseeing
2nd-best month of the year
8.3
Beach & pool
2nd-best month of the year

January 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 January

From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In January, Si Sa Ket sees daytime highs around 31°C and nights near 19°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Si Sa Ket in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 12UV 13Nov 23UV 8
UV index (midday)Level
Jan9Very high
Feb10Very high
Mar11Extreme
Apr11Extreme
May11Extreme
Jun12Extreme
Jul13Extreme
Aug13Extreme
Sep11Extreme
Oct11Extreme
Nov8Very high
Dec8Very high

Air quality in Si Sa Ket in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January 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).

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorPoorModerateMar 1656 µg/m³Dec 1319 µg/m³
PM2.5 (µg/m³)Level
Jan29Moderate
Feb45Poor
Mar58Unhealthy
Apr43Poor
May28Moderate
Jun21Moderate
Jul23Moderate
Aug23Moderate
Sep27Moderate
Oct28Moderate
Nov22Moderate
Dec19Moderate
Location & terrain

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.

SurinPhibun Mangsahan

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.

3 km
32 m
16 km
45 m
80 km
557 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Ubon Ratchathani 57 km · Warin Chamrap 58 km · Kantharalak 63 km · Yasothon 78 km · Det Udom 84 km · Amnat Charoen 89 km · Surin 93 km · Phibun Mangsahan 98 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
Buddhist 93%Muslim 5%Christian 1%other 1%

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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).