Chong Nonsi weather in December

In December, Chong Nonsi sees average daytime highs of 32°C and overnight lows near 23°C, with 10 mm of rain across 1.7 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 43% 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 Chong Nonsi's 4th-clearest and 8th-windiest month. For the whole year in context, see Chong Nonsi's year-round climate.

Daytime high
32°
12th warmest
Overnight low
23°
2nd coldest
Rainfall
10 mm
1.7 wet days
Daylight
11 h 12 min
6:38 AM – 5:50 PM
Cloud cover
49%
4th clearest
Wind
9 km/h
8th windiest
Solar energy
4.79 kWh/m²
Travel score
5.1
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 Chong Nonsi 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
33224
43223
53223
63223
73223
83223
93223
103223
113223
123223
133223
143223
153223
163223
173122
183122
193122
203122
213122
223122
233122
243122
253122
263122
273122
283122
293122
303122
313122

How December really feels in Chong Nonsi

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.

Chong Nonsi 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° / 22°152.911.35.0
Feb33° / 24°132.811.54.3
Mar34° / 26°416.311.93.3
Apr35° / 28°6810.412.32.3
May35° / 28°13020.112.61.9
Jun34° / 27°12721.812.82.1
Jul33° / 27°13422.912.72.2
Aug33° / 27°14523.612.52.2
Sep33° / 26°23725.312.12.2
Oct32° / 26°19120.711.72.9
Nov32° / 24°426.411.44.2
Dec32° / 23°101.711.25.1

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 22% of December, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15941
26040
36040
45941
55941
65941
76040
86040
96040
106040
116139
126139
136238
146337
156436
166436
176535
186634
196733
206733
216931
226931
236931
247030
257030
267030
277228
287228
297228
307228
317228

Chance of precipitation in December

Any precipitation

Chong Nonsi gets around 10 mm of rain over 1.7 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 6% and peaks near 11% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
111
211
310
410
59
69
78
88
98
107
117
126
135
145
154
164
174
184
194
203
213
223
233
243
253
263
273
284
294
305
315

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 66% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11414303318
21415313217
31515323116
41516333015
51516342914
61517352814
71618352713
81619362712
91619362612
101720362511
111721362510
12182235259
13182235259
14292334258
152102333257
162102432257
173112430256
183122429266
193122528266
204122528265
214132527265
225132626265
235132626254
245132626254
255132727254
265132727254
275122728254
285122628254
295112629254
304112629254
314102629265

Wind in December

Winds average 9 km/h in December.

Across December, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

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 6:30 AM to 6:45 AM, and sunset from 5:45 PM to 5:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.26:305:45
211.26:315:45
311.26:315:46
411.26:325:46
511.26:325:46
611.26:335:46
711.26:335:47
811.26:345:47
911.26:345:47
1011.26:355:48
1111.26:355:48
1211.26:365:48
1311.26:375:49
1411.26:375:49
1511.26:385:49
1611.26:385:50
1711.26:395:50
1811.26:395:51
1911.26:405:51
2011.26:405:52
2111.26:415:52
2211.26:415:53
2311.26:415:53
2411.26:425:53
2511.26:425:54
2611.26:435:54
2711.26:435:55
2811.26:445:55
2911.26:445:56
3011.26:455:57
3111.26:455:57

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.79 kWh/m².

For context, solar energy here swings from a low near 4.62 kWh/m² to a high of 6.24 kWh/m² in April across the year — December's 4.79 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in December

Hazard calendar for Chong Nonsi

In seasonPeak

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

Chong Nonsi sits in the Pacific typhoon belt; the season peaks July–October.

Chong Nonsi's monsoon runs May–October, when most of the year's rain falls.

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

Is December a good time to visit Chong Nonsi?

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

5.1
Sightseeing
1st-best month of the year
7.8
Beach & pool
1st-best month of the year

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

What to pack for Chong Nonsi in December

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

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

light clothessun protection

Sea temperature near Chong Nonsi 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 36 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 Chong Nonsi in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Chong Nonsi peaks around August 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 21 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 13Nov 21UV 8
UV index (midday)Level
Jan9Very high
Feb9Very high
Mar12Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct9Very high
Nov8Very high
Dec8Very high

Air quality in Chong Nonsi 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 Chong Nonsi is worst in January — around 114 µg/m³ PM2.5 (unhealthy), about 2.5× the cleanest month (August, 46 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyJan 15112 µg/m³Aug 1046 µg/m³
PM2.5 (µg/m³)Level
Jan114Unhealthy
Feb97Unhealthy
Mar69Unhealthy
Apr62Unhealthy
May54Poor
Jun46Poor
Jul47Poor
Aug46Poor
Sep60Unhealthy
Oct87Unhealthy
Nov101Unhealthy
Dec102Unhealthy
Location & terrain

Where is Chong Nonsi?

Chong Nonsi sits at 13.7°N, 100.5°E, 6 m above sea level, in Thailand. The nearest listed city is Yan Nawa, 1.0 km away.

Topography around Chong Nonsi

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

Within 3 km, the terrain around Chong Nonsi has only modest variations in elevation — a maximum elevation change of 19 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 41 m; within 80 km, large variations in elevation — a maximum elevation change of 874 m.

The land around Chong Nonsi is covered by artificial surfaces (60%) and trees (27%) within 3 km, artificial surfaces (69%) within 16 km, and water (30%) and cropland (28%) within 80 km.

3 km
19 m
16 km
41 m
80 km
874 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Yan Nawa 1.0 km · Sathon 3.0 km · Bang Khlo 4.0 km · Khlong Toei 4.0 km · Phra Pradaeng 4.0 km · Rat Burana 5.0 km · Bang Rak 5.0 km · Bang Kho Laem subdistrict 5.0 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 Chong Nonsi (13.6931°, 100.5487°, elevation 6 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).