Prachuap Khiri Khan weather in December

In December, Prachuap Khiri Khan sees average daytime highs of 28°C and overnight lows near 23°C, with 28 mm of rain across 4.3 wet days and about 11.3 hours of daylight. It is the 12th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 43% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 24 min at the start of December to 11 h 18 min by month's end. Set against the rest of the year, December is Prachuap Khiri Khan's 4th-clearest and 2nd-windiest month. For the whole year in context, see Prachuap Khiri Khan's year-round climate.

Daytime high
28°
12th warmest
Overnight low
23°
2nd coldest
Rainfall
28 mm
4.3 wet days
Daylight
11 h 18 min
6:38 AM – 5:56 PM
Cloud cover
51%
4th clearest
Wind
15 km/h
2nd windiest
Solar energy
5.04 kWh/m²
Travel score
7.3
out of 10

Prachuap Khiri Khan is town in Prachuap Khiri Khan province, Thailand.

Density
2,394/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 28°C through the month.

A typical December day in Prachuap Khiri Khan reaches about 28°C in the afternoon and slips back to 23°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 29°C. Set against its neighbours, December runs on par with November and on par with January.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12824
22824
32824
42824
52824
62824
72824
82824
92824
102824
112824
122824
132824
142824
152823
162823
172823
182823
192823
202823
212823
222823
232823
242823
252823
262823
272823
282823
292823
302823
312823

How December really feels in Prachuap Khiri Khan

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.

Prachuap Khiri Khan weather by month

How December compares with the rest of the year at a glance. December is the 12th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 23°405.611.47.3
Feb28° / 24°234.611.66.7
Mar29° / 25°7411.211.95.4
Apr30° / 26°9816.612.34.2
May30° / 26°15525.612.53.1
Jun29° / 25°12423.512.73.3
Jul29° / 25°14425.312.63.4
Aug29° / 25°14725.512.43.4
Sep29° / 25°16925.312.13.3
Oct28° / 25°24025.611.73.8
Nov28° / 24°9110.911.55.9
Dec28° / 23°284.311.37.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 17% of December, with mostly cloudy or overcast conditions the remaining 40%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25644
35644
45743
55743
65743
75743
85743
95743
105842
115842
125842
135941
145941
155941
166040
176040
186040
196139
206139
216238
226238
236238
246337
256337
266337
276436
286436
296436
306535
316535

Chance of precipitation in December

Any precipitation

Prachuap Khiri Khan gets around 28 mm of rain over 4.3 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 14% and peaks near 23% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
123
222
322
421
520
619
719
818
917
1016
1115
1214
1313
1413
1512
1611
1711
1811
1911
2010
2110
2210
2310
2410
2510
2610
2711
2811
2912
3012
3113

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 44% of days. Sticky, muggy-or-worse air turns up on roughly 78% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
101927603
2011028592
3011129572
4011130562
5011231542
6011232532
7011333512
8011333512
9011434492
10011535482
11011635472
12011635462
13011735451
14021835441
15021934431
16032034421
17032133411
18042133401
19152232391
20152232381
21162332371
22162332361
23172432361
24172432351
25172433341
26172433341
27172433341
28172434341
29172334351
30172234351
31162235360

Wind in December

Winds average 15 km/h in December.

Across December, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 24 min at the start of December to 11 h 18 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 6:30 AM to 6:45 AM, and sunset from 5:51 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.46:305:51
211.46:305:52
311.36:315:52
411.36:325:52
511.36:325:52
611.36:335:53
711.36:335:53
811.36:345:53
911.36:345:54
1011.36:355:54
1111.36:355:54
1211.36:365:55
1311.36:365:55
1411.36:375:56
1511.36:375:56
1611.36:385:56
1711.36:385:57
1811.36:395:57
1911.36:395:58
2011.36:405:58
2111.36:405:59
2211.36:415:59
2311.36:415:59
2411.36:426:00
2511.36:426:00
2611.36:426:01
2711.36:436:01
2811.36:436:02
2911.36:446:02
3011.36:446:03
3111.36:456:03

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.04 kWh/m².

For context, solar energy here swings from a low near 4.48 kWh/m² to a high of 6.36 kWh/m² in April across the year — December's 5.04 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
315.2Bright
Planning a trip in December

Hazard calendar for Prachuap Khiri Khan

In seasonPeak

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

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

Prachuap Khiri Khan's rainy season runs May–October, when most of the year's rain falls.

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

Is December a good time to visit Prachuap Khiri Khan?

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

7.3
Sightseeing
1st-best month of the year
7.7
Beach & pool
3rd-best month of the year

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

What to pack for Prachuap Khiri Khan in December

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

In December, Prachuap Khiri Khan sees daytime highs around 28°C and nights near 23°C. Pack light clothes. Worth having: sun protection. About 4 days see rain.

light clothessun protection

Sea temperature near Prachuap Khiri Khan 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 offshore is warmest in May at about 30°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
May30Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Prachuap Khiri Khan 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 Prachuap Khiri Khan peaks around August 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 20 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 16UV 14Nov 20UV 8
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar13Extreme
Apr12Extreme
May12Extreme
Jun12Extreme
Jul13Extreme
Aug14Extreme
Sep13Extreme
Oct11Extreme
Nov8Very high
Dec9Very high

Air quality in Prachuap Khiri Khan 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 Prachuap Khiri Khan is worst in April — around 26 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (September, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateApr 1025 µg/m³Sep 1211 µg/m³
PM2.5 (µg/m³)Level
Jan24Moderate
Feb24Moderate
Mar25Moderate
Apr26Moderate
May16Moderate
Jun12Moderate
Jul13Moderate
Aug12Good
Sep11Good
Oct14Moderate
Nov19Moderate
Dec20Moderate
Location & terrain

Where is Prachuap Khiri Khan?

Prachuap Khiri Khan sits at 11.8°N, 99.8°E, 13 m above sea level, in Thailand. The nearest listed city is Kui Buri, 30 km away.

Cha-amTha YangPhetchaburi

Topography around Prachuap Khiri Khan

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

Within 3 km, the terrain around Prachuap Khiri Khan has only modest variations in elevation — a maximum elevation change of 69 m around an average of 10 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 635 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,290 m.

The land around Prachuap Khiri Khan is covered by trees (29%), grassland (29%) and artificial surfaces (20%) within 3 km, water (43%) and trees (38%) within 16 km, and trees (58%) and water (36%) within 80 km.

3 km
69 m
16 km
635 m
80 km
1,290 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
December weather nearby: Kui Buri 30 km · Sam Roi Yot 51 km · Pran Buri 64 km · Bang Saphan 74 km · Hua Hin 85 km · Cha-am 111 km · Tha Yang 127 km · Phetchaburi 145 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 Prachuap Khiri Khan (11.821°, 99.7841°, elevation 13 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).