Ron Phibun weather in December

In December, Ron Phibun sees average daytime highs of 29°C and overnight lows near 22°C, with 169 mm of rain across 18.3 wet days and about 11.5 hours of daylight. It is the 12th-warmest and 8th-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 10% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 36 min at the start of December to 11 h 30 min by month's end. Set against the rest of the year, December is Ron Phibun's 5th-clearest and 4th-windiest month. For the whole year in context, see Ron Phibun's year-round climate.

Daytime high
29°
12th warmest
Overnight low
22°
3rd coldest
Rainfall
169 mm
18.3 wet days
Daylight
11 h 30 min
6:31 AM – 6:03 PM
Cloud cover
76%
5th clearest
Wind
6 km/h
4th windiest
Solar energy
3.96 kWh/m²
Travel score
4.1
out of 10

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 Ron Phibun reaches about 29°C in the afternoon and slips back to 22°C overnight — a 7°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 on par with November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12923
22923
32923
42923
52923
62923
72923
82923
92923
102923
112922
122922
132922
142922
152922
162922
172922
182922
192922
202922
212922
222922
232922
242922
252922
262922
272922
282922
292922
303022
313022

How December really feels in Ron Phibun

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.

Ron Phibun weather by month

How December compares with the rest of the year at a glance. December is the 12th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°8914.611.64.4
Feb31° / 22°519.711.74.2
Mar33° / 23°12113.911.93.3
Apr34° / 24°15019.712.22.4
May33° / 24°19925.712.42.2
Jun32° / 24°17023.812.52.6
Jul31° / 23°18325.212.42.7
Aug31° / 23°21226.412.32.6
Sep31° / 23°24827.1122.5
Oct31° / 23°31828.911.82.6
Nov30° / 23°27425.211.63.1
Dec29° / 22°16918.311.54.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% 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 73%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12278
22377
32377
42377
52476
62476
72575
82476
92476
102575
112575
122575
132674
142674
152773
162773
172773
182773
192773
202773
212872
222872
232971
242971
253070
263070
273169
283169
293268
303367
313466

Chance of precipitation in December

Any precipitation

Ron Phibun gets around 169 mm of rain over 18.3 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 60% and peaks near 74% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
174
272
371
470
569
667
766
866
965
1064
1163
1263
1362
1461
1560
1659
1758
1858
1957
2056
2155
2254
2353
2452
2552
2651
2751
2851
2951
3051
3151

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 84% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1037819
2037918
3047917
4048016
5048115
6048214
7048313
8048412
9048511
10048511
11048610
12058510
1305869
1405869
1505878
1606868
1706868
1807858
1907867
2018847
2118847
2218847
2319846
2419846
25110836
26110845
27111835
28111835
29111835
30111844
31111844

Wind in December

Winds average 6 km/h in December.

Across December, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 36 min at the start of December to 11 h 30 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 6:24 AM to 6:38 AM, and sunset from 5:57 PM to 6:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:245:57
211.66:245:57
311.66:255:58
411.56:255:58
511.56:265:58
611.56:265:59
711.56:275:59
811.56:275:59
911.56:276:00
1011.56:286:00
1111.56:286:00
1211.56:296:01
1311.56:296:01
1411.56:306:02
1511.56:306:02
1611.56:316:03
1711.56:316:03
1811.56:326:03
1911.56:326:04
2011.56:336:04
2111.56:336:05
2211.56:346:05
2311.56:346:06
2411.56:356:06
2511.56:356:07
2611.56:366:07
2711.56:366:08
2811.56:376:08
2911.56:376:09
3011.56:376:09
3111.56:386:10

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.96 kWh/m².

For context, solar energy here swings from a low near 3.79 kWh/m² to a high of 5.88 kWh/m² in March across the year — December's 3.96 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.8Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.8Moderate
93.9Moderate
103.9Moderate
113.9Moderate
123.9Moderate
133.9Moderate
143.9Moderate
154.0Moderate
164.0Moderate
174.0Moderate
184.0Bright
194.0Bright
204.0Bright
214.1Bright
224.1Bright
234.1Bright
244.1Bright
254.1Bright
264.2Bright
274.2Bright
284.2Bright
294.2Bright
304.2Bright
314.2Bright
Planning a trip in December

Hazard calendar for Ron Phibun

In seasonPeak

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

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

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

Is December a good time to visit Ron Phibun?

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

4.1
Sightseeing
3rd-best month of the year
5.4
Beach & pool
4th-best month of the year

December is a reasonable time to visit Ron Phibun for sightseeing.

What to pack for Ron Phibun in December

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

In December, Ron Phibun sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. About 18 days see rain.

light clothesrain gear

Sea temperature near Ron Phibun 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 58 km away) is warmest in May at about 31°C and coldest in January near 28°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
Jan28Warm
Feb28Tropical
Mar29Tropical
Apr30Tropical
May31Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec28Tropical

UV index in Ron Phibun in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ron Phibun peaks around March 24 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 24UV 13Jan 10UV 10
UV index (midday)Level
Jan10Extreme
Feb13Extreme
Mar13Extreme
Apr13Extreme
May13Extreme
Jun12Extreme
Jul11Extreme
Aug13Extreme
Sep13Extreme
Oct12Extreme
Nov10Extreme
Dec10Extreme

Air quality in Ron Phibun 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 Ron Phibun is worst in April — around 28 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1727 µg/m³Aug 1722 µg/m³
PM2.5 (µg/m³)Level
Jan24Moderate
Feb22Moderate
Mar24Moderate
Apr28Moderate
May25Moderate
Jun26Moderate
Jul24Moderate
Aug22Moderate
Sep24Moderate
Oct26Moderate
Nov25Moderate
Dec22Moderate
Location & terrain

Where is Ron Phibun?

Ron Phibun sits at 8.2°N, 99.9°E, 37 m above sea level, in Thailand. The nearest listed city is Thung Song, 19 km away.

Topography around Ron Phibun

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

Within 3 km, the terrain around Ron Phibun has significant variations in elevation — a maximum elevation change of 291 m around an average of 58 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,106 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,772 m.

The land around Ron Phibun is covered by trees (90%) within 3 km, trees (87%) within 16 km, and trees (68%) and water (24%) within 80 km.

3 km
291 m
16 km
1,106 m
80 km
1,772 m
treesgrasslandcroplandartificial surfaceswatermangroves
December weather nearby: Thung Song 19 km · Nakhon Si Thammarat 31 km · Pak Phanang 43 km · Huai Yot 50 km · Phatthalung 67 km · Ranot 68 km · Trang 74 km · Ban Na San 88 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 Ron Phibun (8.1791°, 99.8542°, elevation 37 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).