Tha Muang weather in December

In December, Tha Muang sees average daytime highs of 32°C and overnight lows near 22°C, with 11 mm of rain across 2.1 wet days and about 11.2 hours of daylight. It is the 12th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 41% of the time in December, and the air most often feels muggy.

Daylight stretches from about 11 h 12 min at the start of December to 11 h 12 min by month's end. Set against the rest of the year, December is Tha Muang's 4th-clearest and 1st-windiest month. For the whole year in context, see Tha Muang's year-round climate.

Daytime high
32°
12th warmest
Overnight low
22°
2nd coldest
Rainfall
11 mm
2.1 wet days
Daylight
11 h 12 min
6:42 AM – 5:53 PM
Cloud cover
49%
4th clearest
Wind
10 km/h
1st windiest
Solar energy
4.71 kWh/m²
Travel score
4.9
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical December day in Tha Muang reaches about 32°C in the afternoon and slips back to 22°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 34°C. Set against its neighbours, December runs on par with November and on par with January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13223
23223
33223
43223
53223
63223
73223
83223
93223
103223
113222
123222
133222
143222
153222
163222
173222
183222
193222
203222
213222
223222
233221
243221
253221
263221
273221
283221
293221
303221
313221

How December really feels in Tha Muang

Once humidity and wind are folded in, December averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Tha Muang 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
Jan33° / 22°162.611.34.5
Feb35° / 23°15311.53.3
Mar36° / 25°416.811.92.1
Apr37° / 27°8012.212.31.4
May36° / 27°12820.312.61.5
Jun35° / 27°1162012.81.9
Jul34° / 26°1342112.72.2
Aug33° / 26°1392212.52.3
Sep33° / 26°21423.312.12.2
Oct32° / 25°19320.611.73.0
Nov32° / 24°496.511.44.2
Dec32° / 22°112.111.24.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 22% of December, with mostly cloudy or overcast conditions the remaining 37%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25743
35743
45743
55644
65644
75743
85743
95743
105842
115842
125941
136040
146139
156238
166337
176436
186535
196535
206733
216733
226832
236832
246832
256931
266931
276931
286931
296931
306931
316931

Chance of precipitation in December

Any precipitation

Tha Muang gets around 11 mm of rain over 2.1 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 7% and peaks near 11% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
111
210
310
49
59
69
78
88
98
108
117
127
136
146
156
166
175
185
195
205
215
225
235
245
255
265
275
285
295
306
316

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the muggy band about 32% of days. Sticky, muggy-or-worse air turns up on roughly 56% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1261736318
2361836308
3371936297
4371936286
5382037276
6382137275
7392137264
8392237254
93102337243
103102336243
114112436232
124122435232
135132435222
145142434221
156152433211
166152432211
177162531211
188172529211
198172529200
209182528200
219182628190
229192527190
2310192627180
2410192627180
2510192627170
2610192727170
2710192728160
289192729160
299182730160
308182730160
318172731170

Wind in December

Winds average 10 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 12 min at the start of December to 11 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 6:34 AM to 6:49 AM, and sunset from 5:48 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.26:345:48
211.26:355:48
311.26:355:49
411.26:365:49
511.26:365:49
611.26:375:49
711.26:375:50
811.26:385:50
911.26:395:50
1011.26:395:51
1111.26:405:51
1211.26:405:51
1311.26:415:52
1411.26:415:52
1511.26:425:53
1611.26:425:53
1711.26:435:53
1811.26:435:54
1911.26:445:54
2011.26:445:55
2111.26:455:55
2211.26:455:56
2311.26:465:56
2411.26:465:57
2511.26:475:57
2611.26:475:58
2711.26:475:58
2811.26:485:59
2911.26:485:59
3011.26:496:00
3111.26:496:00

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.71 kWh/m².

For context, solar energy here swings from a low near 4.46 kWh/m² to a high of 6.26 kWh/m² in April across the year — December's 4.71 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.7Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in December

Hazard calendar for Tha Muang

In seasonPeak

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

Tha Muang's rainy season runs May–October, when most of the year's rain falls.

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

Is December a good time to visit Tha Muang?

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

4.9
Sightseeing
1st-best month of the year
7.7
Beach & pool
1st-best month of the year

December is a reasonable time to visit Tha Muang for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Tha Muang in December

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

In December, Tha Muang sees daytime highs around 32°C and nights near 22°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Tha Muang in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December 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 Tha Muang peaks around August 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 9 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 16UV 14Dec 15UV 9
UV index (midday)Level
Jan9Very high
Feb9Very high
Mar13Extreme
Apr11Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec9Very high

Air quality in Tha Muang 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 Tha Muang is worst in March — around 57 µg/m³ PM2.5 (unhealthy), about 2.7× the cleanest month (June, 21 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorPoorModerateMar 1356 µg/m³Jun 2221 µg/m³
PM2.5 (µg/m³)Level
Jan45Poor
Feb53Poor
Mar57Unhealthy
Apr43Poor
May30Moderate
Jun21Moderate
Jul22Moderate
Aug22Moderate
Sep26Moderate
Oct33Moderate
Nov32Moderate
Dec33Moderate
Location & terrain

Where is Tha Muang?

Tha Muang sits at 14.0°N, 99.6°E, 27 m above sea level, in Thailand. The nearest listed city is Kanchanaburi, 11 km away.

Topography around Tha Muang

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

Within 3 km, the terrain around Tha Muang has only modest variations in elevation — a maximum elevation change of 28 m around an average of 23 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 455 m; within 80 km, large variations in elevation — a maximum elevation change of 1,197 m.

The land around Tha Muang is covered by trees (38%), cropland (22%) and artificial surfaces (21%) within 3 km, cropland (47%) and trees (30%) within 16 km, and trees (48%) and cropland (39%) within 80 km.

3 km
28 m
16 km
455 m
80 km
1,197 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Kanchanaburi 11 km · Tha Maka 15 km · Ban Pong 30 km · Photharam 37 km · Chom Bueng 38 km · Ban I Chang 39 km · Bo Phloi 43 km · Bang Phae 43 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 Tha Muang (13.9612°, 99.6412°, elevation 27 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).