Phetchaburi weather in December

In December, Phetchaburi sees average daytime highs of 29°C and overnight lows near 24°C, with 14 mm of rain across 2.1 wet days and about 11.2 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 48% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 18 min at the start of December to 11 h 12 min by month's end. Set against the rest of the year, December is Phetchaburi's 4th-clearest and 4th-windiest month. For the whole year in context, see Phetchaburi's year-round climate.

Daytime high
29°
12th warmest
Overnight low
24°
2nd coldest
Rainfall
14 mm
2.1 wet days
Daylight
11 h 12 min
6:39 AM – 5:53 PM
Cloud cover
46%
4th clearest
Wind
13 km/h
4th windiest
Solar energy
4.9 kWh/m²
Travel score
6.8
out of 10

Phetchaburi is town in Phetchaburi province, Thailand.

Density
8,630/km²
people per km²

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical December day in Phetchaburi reaches about 29°C in the afternoon and slips back to 24°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 31°C. Set against its neighbours, December runs about 1°C cooler than November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12925
22925
32925
42925
52925
62925
72925
82925
92925
102925
112925
122925
132924
142924
152924
162924
172924
182924
192924
202924
212924
222924
232924
242924
252924
262924
272924
282924
292924
302924
312924

How December really feels in Phetchaburi

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.

Phetchaburi weather by month

How December compares with the rest of the year at a glance. December is the 12th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°142.311.36.9
Feb30° / 25°91.811.66.4
Mar31° / 26°42511.95.3
Apr32° / 28°538.712.34.1
May32° / 28°9317.212.63.1
Jun32° / 27°6615.412.83.2
Jul31° / 27°8317.112.73.3
Aug31° / 27°9118.712.43.4
Sep30° / 26°15120.912.13.2
Oct30° / 26°24822.611.73.7
Nov30° / 25°637.711.45.5
Dec29° / 24°142.111.26.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 48% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 19% of December, with mostly cloudy or overcast conditions the remaining 33%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26238
36238
46238
56337
66337
76337
86337
96436
106535
116634
126634
136733
146733
156832
166832
176832
186931
196832
206931
216931
226931
236931
247030
257030
267030
277030
287030
297030
307030
317030

Chance of precipitation in December

Any precipitation

Phetchaburi gets around 14 mm of rain over 2.1 wet days in December. 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 14% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
114
214
313
412
512
611
710
810
99
108
118
127
136
145
155
164
174
184
194
204
214
224
234
244
254
264
274
285
295
306
316

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 37% of days. Sticky, muggy-or-worse air turns up on roughly 73% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1031231485
2031233475
3031234464
4041335454
5041336443
6041437433
7041438423
8041438412
9041539402
10051539392
11051639381
12051739381
13161738371
14161837371
15171936361
16171935361
17282034351
18282133351
19292133351
20392232341
21392331331
22392331321
23392431321
24492531311
25492531301
26492532301
27492532301
28482532301
29382533301
30372533311
31372434321

Wind in December

Winds average 13 km/h in December.

Across December, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012calm
3112calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 18 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 shrink by about 6 minutes over December. Sunrise moves from 6:31 AM to 6:46 AM, and sunset from 5:48 PM to 6:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.36:315:48
211.36:325:49
311.36:335:49
411.36:335:49
511.36:345:49
611.36:345:50
711.36:355:50
811.36:355:50
911.26:365:51
1011.26:365:51
1111.26:375:51
1211.26:375:52
1311.26:385:52
1411.26:385:53
1511.26:395:53
1611.26:395:53
1711.26:405:54
1811.26:405:54
1911.26:415:55
2011.26:415:55
2111.26:425:56
2211.26:425:56
2311.26:435:56
2411.26:435:57
2511.26:445:57
2611.26:445:58
2711.26:455:58
2811.26:455:59
2911.26:455:59
3011.26:466:00
3111.26:466:01

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.9 kWh/m².

For context, solar energy here swings from a low near 4.5 kWh/m² to a high of 6.36 kWh/m² in April across the year — December's 4.9 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
194.9Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in December

Hazard calendar for Phetchaburi

In seasonPeak

In December, Phetchaburi sits inside its cyclone season. The full year is below, with each hazard's peak months called out.

Phetchaburi sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.

Phetchaburi's monsoon runs September–October, when most of the year's rain falls.

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

Is December a good time to visit Phetchaburi?

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

6.8
Sightseeing
2nd-best month of the year
8.4
Beach & pool
3rd-best month of the year

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

What to pack for Phetchaburi in December

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

In December, Phetchaburi sees daytime highs around 29°C and nights near 24°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

Sea temperature near Phetchaburi in December

The nearest coast averages about 28°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 20 km away) is warmest in May at about 31°C and coldest in January near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb28Warm
Mar29Tropical
Apr30Tropical
May31Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Phetchaburi 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 Phetchaburi peaks around August 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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 14Jan 1UV 9
UV index (midday)Level
Jan9Very high
Feb9Very high
Mar13Extreme
Apr12Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep12Extreme
Oct10Extreme
Nov9Very high
Dec9Very high

Air quality in Phetchaburi 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 Phetchaburi is worst in February — around 34 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (August, 14 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateFeb 2234 µg/m³Aug 2014 µg/m³
PM2.5 (µg/m³)Level
Jan32Moderate
Feb34Moderate
Mar34Moderate
Apr31Moderate
May19Moderate
Jun14Moderate
Jul15Moderate
Aug14Moderate
Sep14Moderate
Oct22Moderate
Nov27Moderate
Dec29Moderate
Location & terrain

Where is Phetchaburi?

Phetchaburi sits at 13.1°N, 99.9°E, 7 m above sea level, in Thailand. The nearest listed city is Tha Yang, 18 km away.

Topography around Phetchaburi

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

Within 3 km, the terrain around Phetchaburi has only modest variations in elevation — a maximum elevation change of 102 m around an average of 8 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 246 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,232 m.

The land around Phetchaburi is covered by artificial surfaces (40%), trees (29%) and cropland (21%) within 3 km, cropland (46%) within 16 km, and trees (44%) and water (34%) within 80 km.

3 km
102 m
16 km
246 m
80 km
1,232 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
December weather nearby: Tha Yang 18 km · Khao Yoi 19 km · Samut Songkhram 34 km · Cha-am 35 km · Damnoen Saduak 45 km · Ratchaburi 49 km · Ban Phaeo 56 km · Samut Sakhon 60 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 Phetchaburi (13.1119°, 99.9447°, elevation 7 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).