Phumĭ Tnaôt weather in December

In December, Phumĭ Tnaôt sees average daytime highs of 31°C and overnight lows near 23°C, with 19 mm of rain across 3.2 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 31°C through the month. The sky is clear or mostly clear about 32% 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 Phumĭ Tnaôt's 4th-clearest and 1st-windiest month. For the whole year in context, see Phumĭ Tnaôt's year-round climate.

Daytime high
31°
12th warmest
Overnight low
23°
1st coldest
Rainfall
19 mm
3.2 wet days
Daylight
11 h 12 min
6:21 AM – 5:35 PM
Cloud cover
57%
4th clearest
Wind
8 km/h
1st windiest
Solar energy
4.87 kWh/m²
Travel score
5.0
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical December day in Phumĭ Tnaôt reaches about 31°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 28°C and 34°C. Set against its neighbours, December runs on par with November and about 1°C cooler than January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13223
23223
33223
43223
53123
63123
73123
83123
93123
103123
113123
123123
133123
143123
153123
163122
173122
183122
193122
203122
213122
223122
233122
243122
253122
263122
273122
283222
293222
303222
313222

How December really feels in Phumĭ Tnaôt

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.

Phumĭ Tnaôt 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
Jan32° / 23°112.211.34.6
Feb34° / 24°214.211.63.6
Mar35° / 26°6210.511.92.6
Apr35° / 27°11617.412.32.1
May34° / 27°16823.812.61.9
Jun33° / 27°1682312.72.2
Jul33° / 26°1692512.72.3
Aug32° / 26°20726.312.42.3
Sep32° / 26°28227.112.12.3
Oct32° / 25°21023.411.72.9
Nov32° / 24°709.911.44.1
Dec31° / 23°193.211.35.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% 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 47%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25248
35149
45050
55050
64951
74951
84951
94951
104951
114852
124852
134951
145050
155050
165149
175248
185248
195347
205446
215446
225545
235545
245644
255743
265743
275743
285842
295941
305941
316040

Chance of precipitation in December

Any precipitation

Phumĭ Tnaôt gets around 19 mm of rain over 3.2 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 10% and peaks near 20% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
120
219
318
417
517
616
716
815
915
1014
1113
1213
1312
1411
1510
1610
179
189
198
207
217
226
236
245
255
265
274
284
294
304
314

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 37% of days. Sticky, muggy-or-worse air turns up on roughly 72% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10211314313
20211324212
30212344112
40212354011
50213363910
6031337389
7031438378
8031439368
9031540357
10031640347
11041740336
12041740326
13141840325
14151939315
15152039304
16162138304
17162238294
18272337283
19272436283
20282536273
21282635262
22292735262
23292735252
24292835241
25292835241
262102936231
27292937231
28192937221
29192938221
30192939221
31192939221

Wind in December

Winds average 8 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 8 km/h on the calmest days to 8 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
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

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 6:13 AM to 6:27 AM, and sunset from 5:30 PM to 5:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.36:135:30
211.36:135:30
311.36:145:31
411.36:145:31
511.36:155:31
611.36:155:32
711.36:165:32
811.36:165:32
911.36:175:32
1011.36:185:33
1111.36:185:33
1211.26:195:34
1311.26:195:34
1411.26:205:34
1511.26:205:35
1611.26:215:35
1711.26:215:36
1811.26:225:36
1911.26:225:36
2011.26:235:37
2111.26:235:37
2211.26:245:38
2311.26:245:38
2411.26:255:39
2511.26:255:39
2611.26:255:40
2711.26:265:40
2811.26:265:41
2911.26:275:41
3011.26:275:42
3111.26:275:42

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.87 kWh/m².

For context, solar energy here swings from a low near 4.62 kWh/m² to a high of 6.18 kWh/m² in March across the year — December's 4.87 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
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
194.8Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.1Bright
315.1Bright
Planning a trip in December

Hazard calendar for Phumĭ Tnaôt

In seasonPeak

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

Phumĭ Tnaôt sits in the Pacific typhoon belt; the season peaks July–October.

Phumĭ Tnaôt'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 Phumĭ Tnaôt?

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

5.0
Sightseeing
1st-best month of the year
7.5
Beach & pool
2nd-best month of the year

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

What to pack for Phumĭ Tnaôt in December

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

In December, Phumĭ Tnaôt sees daytime highs around 31°C and nights near 23°C. Pack light clothes. Worth having: sun protection. About 3 days see rain.

light clothessun protection

UV index in Phumĭ Tnaôt 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 Phumĭ Tnaôt peaks around August 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 22 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 17UV 14Nov 22UV 8
UV index (midday)Level
Jan10Very high
Feb10Very high
Mar11Extreme
Apr11Extreme
May10Very high
Jun12Extreme
Jul12Extreme
Aug14Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec8Very high

Air quality in Phumĭ Tnaôt 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 Phumĭ Tnaôt is worst in April — around 47 µg/m³ PM2.5 (poor), about 4.1× the cleanest month (November, 12 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateGoodApr 1146 µg/m³Nov 2212 µg/m³
PM2.5 (µg/m³)Level
Jan25Moderate
Feb42Poor
Mar42Poor
Apr47Poor
May21Moderate
Jun17Moderate
Jul16Moderate
Aug13Moderate
Sep13Moderate
Oct15Moderate
Nov12Good
Dec12Good
Location & terrain

Where is Phumĭ Tnaôt?

Phumĭ Tnaôt sits at 12.9°N, 104.6°E, 16 m above sea level, in Cambodia. The nearest listed city is Kampong Thom, 43 km away.

Kampong ThomKampong ChhnangPursatSiem ReapTbeng MeancheyYeangPhumĭ Véal TônsayPhumĭ Âmpĭl Leu

Topography around Phumĭ Tnaôt

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

Within 3 km, the terrain around Phumĭ Tnaôt has only modest variations in elevation — a maximum elevation change of 11 m around an average of 12 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 27 m; within 80 km, significant variations in elevation — a maximum elevation change of 496 m.

The land around Phumĭ Tnaôt is covered by cropland (77%) within 3 km, cropland (77%) within 16 km, and cropland (36%) and trees (29%) within 80 km.

3 km
11 m
16 km
27 m
80 km
496 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Kampong Thom 43 km · Kampong Chhnang 78 km · Pursat 84 km · Siem Reap 89 km · Tbeng Meanchey 105 km · Yeang 124 km · Phumĭ Véal Tônsay 139 km · Phumĭ Âmpĭl Leu 140 km

Cambodia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / C / G
230 V · 50 Hz
Prices
≈ 34% of US
price level, 2025
GDP per capita
$2,872
2025
Happiness
4.5 / 10
World Happiness, 2025
Safe drinking water
30%
of population, 2024
Homicide rate
1.8
per 100k, 2011
Road deaths
19.6
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Very low
EF EPI 390
Religion
Buddhist 97%Muslim 2%other 1%Christian 0%

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 Phumĭ Tnaôt (12.9473°, 104.5691°, elevation 16 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). 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).