Kaset Sombun weather in December

In December, Kaset Sombun sees average daytime highs of 27°C and overnight lows near 17°C, with 7 mm of rain across 1.3 wet days and about 11 hours of daylight. It is the 12th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 49% of the time in December, and the air most often feels humid.

Daylight stretches from about 11 h 06 min at the start of December to 11 hours by month's end. Set against the rest of the year, December is Kaset Sombun's 3rd-clearest and 2nd-windiest month. For the whole year in context, see Kaset Sombun's year-round climate.

Daytime high
27°
12th warmest
Overnight low
17°
2nd coldest
Rainfall
7 mm
1.3 wet days
Daylight
11 hours
6:37 AM – 5:39 PM
Cloud cover
42%
3rd clearest
Wind
8 km/h
2nd windiest
Solar energy
4.62 kWh/m²
Travel score
8.1
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical December day in Kaset Sombun reaches about 27°C in the afternoon and slips back to 17°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 31°C. Set against its neighbours, December runs about 1°C cooler than November and about 1°C cooler than January.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12818
22818
32818
42818
52818
62818
72718
82718
92718
102717
112717
122717
132717
142717
152717
162717
172717
182717
192717
202717
212716
222716
232716
242716
252716
262716
272716
282716
292716
302716
312716

How December really feels in Kaset Sombun

Once humidity and wind are folded in, December averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Kaset Sombun weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 17°112.411.17.3
Feb31° / 19°163.411.55.7
Mar33° / 22°548.611.94.1
Apr33° / 23°10415.712.43.1
May32° / 24°18923.712.72.7
Jun31° / 24°14920.9132.9
Jul31° / 24°17623.912.93.0
Aug30° / 24°22525.312.52.9
Sep30° / 24°2742612.13.0
Oct29° / 22°1401611.64.6
Nov28° / 20°284.511.26.7
Dec27° / 17°71.3118.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 23% of December, with mostly cloudy or overcast conditions the remaining 28%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16733
26733
36733
46733
56733
66733
76733
86832
96832
106832
116931
126931
137129
147129
157228
167327
177426
187426
197525
207624
217624
227723
237723
247723
257723
267723
277723
287723
297624
307525
317426

Chance of precipitation in December

Any precipitation

Kaset Sombun gets around 7 mm of rain over 1.3 wet days in December, 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 6% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
16
26
35
45
55
65
74
84
94
104
114
124
133
143
153
163
173
183
194
204
214
224
234
244
254
264
275
285
295
305
316

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the humid band about 34% of days. Sticky, muggy-or-worse air turns up on roughly 29% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1615313711
2615323611
3716333510
471634349
571734339
681835318
781836307
891937297
992037286
10102137275
11112137275
12122237264
13132236253
14142336253
15152335243
16162434242
17172433242
18182432242
19182532232
20192531232
21192631222
22202730221
23202730211
24202830211
25202831201
26202931191
27192932191
28182933191
29182934181
30172934181
31163035181

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

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

Days shrink by about 6 minutes over December. Sunrise moves from 6:29 AM to 6:44 AM, and sunset from 5:35 PM to 5:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.16:295:35
211.16:305:35
311.16:305:35
411.16:315:36
511.16:315:36
611.16:325:36
711.16:325:36
811.16:335:37
911.16:335:37
1011.16:345:37
1111.06:355:38
1211.06:355:38
1311.06:365:38
1411.06:365:39
1511.06:375:39
1611.06:375:39
1711.06:385:40
1811.06:385:40
1911.06:395:41
2011.06:395:41
2111.06:405:42
2211.06:405:42
2311.06:415:43
2411.06:415:43
2511.06:425:44
2611.06:425:44
2711.06:425:45
2811.06:435:45
2911.06:435:46
3011.06:445:46
3111.06:445:47

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.62 kWh/m².

For context, solar energy here swings from a low near 4.34 kWh/m² to a high of 6.03 kWh/m² in April across the year — December's 4.62 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.5Bright
54.5Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
164.6Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
314.7Bright
Planning a trip in December

Hazard calendar for Kaset Sombun

In seasonPeak

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

Kaset Sombun'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 December a good time to visit Kaset Sombun?

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

8.1
Sightseeing
1st-best month of the year
8.3
Beach & pool
2nd-best month of the year

December is one of the better times to visit Kaset Sombun for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Kaset Sombun in December

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

In December, Kaset Sombun sees daytime highs around 27°C and nights near 17°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Kaset Sombun in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kaset Sombun peaks around August 13 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 13UV 14Dec 15UV 8
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar12Extreme
Apr10Extreme
May11Extreme
Jun13Extreme
Jul13Extreme
Aug14Extreme
Sep12Extreme
Oct10Extreme
Nov9Very high
Dec8Very high

Air quality in Kaset Sombun in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Kaset Sombun is worst in March — around 51 µg/m³ PM2.5 (poor), about 2.7× the cleanest month (June, 19 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMar 1550 µg/m³Jun 2319 µg/m³
PM2.5 (µg/m³)Level
Jan30Moderate
Feb45Poor
Mar51Poor
Apr41Poor
May27Moderate
Jun19Moderate
Jul19Moderate
Aug20Moderate
Sep21Moderate
Oct24Moderate
Nov22Moderate
Dec23Moderate
Location & terrain

Where is Kaset Sombun?

Kaset Sombun sits at 16.3°N, 102.0°E, 234 m above sea level, in Thailand. The nearest listed city is Phu Khiao, 21 km away.

Bua Yai

Topography around Kaset Sombun

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Kaset Sombun.

Within 3 km, the terrain around Kaset Sombun has only modest variations in elevation — a maximum elevation change of 42 m around an average of 232 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,003 m; within 80 km, large variations in elevation — a maximum elevation change of 1,195 m.

The land around Kaset Sombun is covered by cropland (64%) and trees (22%) within 3 km, trees (47%) and cropland (44%) within 16 km, and cropland (50%) and trees (44%) within 80 km.

3 km
42 m
16 km
1,003 m
80 km
1,195 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Phu Khiao 21 km · Chum Phae 33 km · Kaeng Khro 38 km · Chaiyaphum 53 km · Phu Kradueng 68 km · Phetchabun 86 km · Ban Phai 87 km · Bua Yai 92 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 Kaset Sombun (16.2805°, 101.9542°, elevation 234 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).