Phan Thong weather in December

In December, Phan Thong sees average daytime highs of 32°C and overnight lows near 23°C, with 10 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 40% of the time in December, and the air most often feels muggy.

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 Phan Thong's 4th-clearest and 5th-windiest month. For the whole year in context, see Phan Thong's year-round climate.

Daytime high
32°
12th warmest
Overnight low
23°
2nd coldest
Rainfall
10 mm
2.1 wet days
Daylight
11 h 12 min
6:35 AM – 5:48 PM
Cloud cover
51%
4th clearest
Wind
9 km/h
5th windiest
Solar energy
4.84 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 Phan Thong reaches about 32°C in the afternoon and slips back to 23°C overnight — a 9°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)
13224
23224
33223
43223
53223
63223
73223
83223
93223
103223
113223
123223
133223
143223
153223
163223
173222
183222
193222
203222
213222
223222
233222
243222
253222
263222
273222
283222
293222
303222
313222

How December really feels in Phan Thong

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.

Phan Thong 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
Jan32° / 23°194.111.34.7
Feb33° / 24°194.311.64.0
Mar34° / 26°5610.111.93.1
Apr35° / 27°8914.112.32.4
May34° / 27°15521.312.62.1
Jun33° / 27°13721.912.82.3
Jul33° / 27°15223.512.72.4
Aug32° / 27°16424.612.42.4
Sep32° / 26°25725.912.12.3
Oct32° / 25°18720.511.73.0
Nov32° / 24°376.211.44.2
Dec32° / 23°102.111.24.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 21% of December, with mostly cloudy or overcast conditions the remaining 39%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35842
45842
55743
65743
75743
85743
95842
105842
115842
125842
136040
146040
156139
166139
176238
186337
196436
206436
216436
226436
236535
246535
256535
266634
276535
286535
296634
306634
316634

Chance of precipitation in December

Any precipitation

Phan Thong gets around 10 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 13% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
113
212
311
411
511
610
710
89
99
108
118
127
137
146
156
166
176
185
195
205
215
225
235
245
255
265
275
285
296
307
317

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 31% of days. Sticky, muggy-or-worse air turns up on roughly 63% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11416343114
21516343113
31517343012
41518353011
51519352911
61620352810
7162135279
8172235279
9172335268
10182435258
11182434257
12192534256
132102533246
142102533246
152112532245
163122531245
173132530245
184132529244
194142528244
205142528244
215142527244
226142527243
236152627243
246152627233
256152627233
266142628233
276142628233
286142629233
296132629233
305132630233
315122630234

Wind in December

Winds average 9 km/h in December.

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
119calm
129calm
139calm
149calm
1510calm
1610calm
1710calm
1810calm
1910calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 6:28 AM to 6:42 AM, and sunset from 5:43 PM to 5:55 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.36:285:43
211.36:285:43
311.36:295:44
411.26:295:44
511.26:305:44
611.26:305:45
711.26:315:45
811.26:315:45
911.26:325:45
1011.26:325:46
1111.26:335:46
1211.26:335:47
1311.26:345:47
1411.26:345:47
1511.26:355:48
1611.26:355:48
1711.26:365:49
1811.26:365:49
1911.26:375:49
2011.26:375:50
2111.26:385:50
2211.26:385:51
2311.26:395:51
2411.26:395:52
2511.26:405:52
2611.26:405:53
2711.26:415:53
2811.26:415:54
2911.26:425:54
3011.26:425:55
3111.26:425:55

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.84 kWh/m².

For context, solar energy here swings from a low near 4.52 kWh/m² to a high of 6 kWh/m² in April across the year — December's 4.84 kWh/m² falls in the middle.

024151015202531
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
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in December

Hazard calendar for Phan Thong

In seasonPeak

In December, Phan Thong sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Phan Thong sits in the Pacific typhoon belt; the season peaks July–October.

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

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

Is December a good time to visit Phan Thong?

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 Phan Thong for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Phan Thong in December

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

In December, Phan Thong sees daytime highs around 32°C and nights near 23°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

Sea temperature near Phan Thong 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 26 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
Feb28Tropical
Mar29Tropical
Apr30Tropical
May31Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Phan Thong 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 Phan Thong peaks around August 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 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 highExtremeExtremeVery highAug 15UV 13Dec 13UV 9
UV index (midday)Level
Jan9Very high
Feb10Very high
Mar12Extreme
Apr12Extreme
May9Very high
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct10Very high
Nov9Very high
Dec9Very high

Air quality in Phan Thong 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 Phan Thong is worst in January — around 67 µg/m³ PM2.5 (unhealthy), about 2.0× the cleanest month (June, 34 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorPoorPoorJan 2366 µg/m³Jun 2034 µg/m³
PM2.5 (µg/m³)Level
Jan67Unhealthy
Feb65Unhealthy
Mar53Poor
Apr47Poor
May40Poor
Jun34Moderate
Jul36Poor
Aug36Poor
Sep47Poor
Oct57Unhealthy
Nov53Poor
Dec47Poor
Location & terrain

Where is Phan Thong?

Phan Thong sits at 13.5°N, 101.1°E, 9 m above sea level, in Thailand. The nearest listed city is Phanat Nikhom, 10 km away.

Topography around Phan Thong

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

Within 3 km, the terrain around Phan Thong has only modest variations in elevation — a maximum elevation change of 17 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 173 m; within 80 km, large variations in elevation — a maximum elevation change of 874 m.

The land around Phan Thong is covered by artificial surfaces (31%) and cropland (21%) within 3 km, cropland (27%), trees (20%) and artificial surfaces (20%) within 16 km, and trees (38%), cropland (22%) and water (22%) within 80 km.

3 km
17 m
16 km
173 m
80 km
874 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
December weather nearby: Phanat Nikhom 10 km · Bang Pakong 14 km · Chon Buri 17 km · Ban Bueng 18 km · Ban Ang Sila 23 km · Chachoengsao 24 km · Bang Bo District 32 km · Ban Khlong Bang Sao Thong 34 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 Phan Thong (13.47°, 101.0931°, elevation 9 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).