Thị Trấn Na Dương weather in December

In December, Thị Trấn Na Dương sees average daytime highs of 19°C and overnight lows near 12°C, with 42 mm of rain across 7.7 wet days and about 10.7 hours of daylight. It is the 10th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 20°C in the first days to 18°C by the end. The sky is clear or mostly clear about 28% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 h 48 min at the start of December to 10 h 42 min by month's end. Set against the rest of the year, December is Thị Trấn Na Dương's 3rd-clearest and 3rd-windiest month. For the whole year in context, see Thị Trấn Na Dương's year-round climate.

Daytime high
19°
10th warmest
Overnight low
12°
2nd coldest
Rainfall
42 mm
7.7 wet days
Daylight
10 h 42 min
6:28 AM – 5:09 PM
Cloud cover
62%
3rd clearest
Wind
10 km/h
3rd windiest
Solar energy
2.72 kWh/m²
Travel score
6.3
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 20°C in the first days to 18°C by the end.

A typical December day in Thị Trấn Na Dương reaches about 19°C in the afternoon and slips back to 12°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 24°C. Set against its neighbours, December runs about 4°C cooler than November and about 2°C warmer than January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12114
22014
32013
42013
52013
62013
72013
81913
91912
101912
111912
121912
131912
141912
151912
161912
171812
181812
191811
201811
211811
221811
231811
241811
251811
261811
271811
281811
291811
301811
311811

How December really feels in Thị Trấn Na Dương

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.

Thị Trấn Na Dương weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan17° / 11°509.510.85.1
Feb18° / 12°378.611.35.7
Mar21° / 16°7112.611.85.8
Apr26° / 20°8714.112.55.7
May29° / 23°20420.8134.1
Jun30° / 24°23623.613.33.1
Jul30° / 25°25124.313.23.1
Aug30° / 24°27225.212.73.1
Sep29° / 23°16118.312.14.3
Oct27° / 20°7510.511.56.6
Nov23° / 16°498117.1
Dec19° / 12°427.710.76.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 11% of December, with mostly cloudy or overcast conditions the remaining 61%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14456
24357
34258
44258
54159
64159
74060
84060
94060
103961
113961
123961
133862
143862
153961
163961
174060
183961
194060
203961
214060
224159
234159
244060
254060
263961
273664
283664
293466
303367
313268

Chance of precipitation in December

Any precipitation

Thị Trấn Na Dương gets around 42 mm of rain over 7.7 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 25% and peaks near 28% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
227
327
426
526
626
726
826
925
1025
1124
1224
1324
1423
1523
1623
1723
1823
1924
2024
2124
2224
2324
2424
2524
2625
2725
2826
2927
3028
3128

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 64% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1502117102
252201792
353191792
456191681
557181681
659181571
760171571
863161461
963161461
1063161461
1166151351
1266151351
1367151350
1468151250
1567151260
1667151260
1767151260
1868151160
1968161150
2068161150
2168171050
2268171050
2368181040
2468181040
2567191040
2668191030
2767191130
2867201120
2966201220
3065201320
3165201320

Wind in December

Winds average 10 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
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
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 10 h 48 min at the start of December to 10 h 42 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 6:19 AM to 6:35 AM, and sunset from 5:05 PM to 5:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.86:195:05
210.86:195:05
310.86:205:05
410.76:215:05
510.76:215:06
610.76:225:06
710.76:235:06
810.76:235:06
910.76:245:07
1010.76:245:07
1110.76:255:07
1210.76:265:07
1310.76:265:08
1410.76:275:08
1510.76:275:08
1610.76:285:09
1710.76:285:09
1810.76:295:10
1910.76:295:10
2010.76:305:10
2110.76:305:11
2210.76:315:11
2310.76:315:12
2410.76:325:12
2510.76:325:13
2610.76:335:13
2710.76:335:14
2810.76:335:14
2910.76:345:15
3010.76:345:16
3110.76:355:16

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.72 kWh/m².

For context, solar energy here swings from a low near 2.29 kWh/m² to a high of 4.68 kWh/m² in July across the year — December's 2.72 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.9Moderate
22.8Moderate
32.8Moderate
42.8Moderate
52.8Moderate
62.8Moderate
72.7Moderate
82.7Moderate
92.7Moderate
102.7Moderate
112.7Moderate
122.7Moderate
132.7Moderate
142.7Moderate
152.7Moderate
162.7Moderate
172.7Moderate
182.7Moderate
192.7Moderate
202.7Moderate
212.7Moderate
222.7Moderate
232.7Moderate
242.7Moderate
252.7Moderate
262.7Moderate
272.7Moderate
282.6Moderate
292.6Moderate
302.6Moderate
312.6Moderate
Planning a trip in December

Hazard calendar for Thị Trấn Na Dương

In seasonPeak

None of Thị Trấn Na Dương's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Thị Trấn Na Dương's monsoon runs May–September, when most of the year's rain falls.

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

Is December a good time to visit Thị Trấn Na Dương?

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

6.3
Sightseeing
3rd-best month of the year
2.6
Beach & pool
10th-best month of the year

December is a reasonable time to visit Thị Trấn Na Dương for sightseeing.

What to pack for Thị Trấn Na Dương in December

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

In December, Thị Trấn Na Dương sees daytime highs around 19°C and nights near 12°C. Little to plan around — just the basics. About 8 days see rain.

UV index in Thị Trấn Na Dương in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Thị Trấn Na Dương peaks around June 23 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighJun 23UV 12Dec 14UV 6
UV index (midday)Level
Jan7High
Feb7High
Mar9Very high
Apr7Very high
May9Very high
Jun12Extreme
Jul12Extreme
Aug9Very high
Sep9Very high
Oct8Very high
Nov6High
Dec6High

Air quality in Thị Trấn Na Dương 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 Thị Trấn Na Dương is worst in April — around 47 µg/m³ PM2.5 (poor), about 2.5× the cleanest month (July, 19 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorJan 2447 µg/m³Jul 1819 µg/m³
PM2.5 (µg/m³)Level
Jan47Poor
Feb47Poor
Mar45Poor
Apr47Poor
May31Moderate
Jun22Moderate
Jul19Moderate
Aug21Moderate
Sep26Moderate
Oct32Moderate
Nov36Poor
Dec43Poor
Location & terrain

Where is Thị Trấn Na Dương?

Thị Trấn Na Dương sits at 21.7°N, 107.0°E, 287 m above sea level, in Vietnam. The nearest listed city is Lạng Sơn, 26 km away.

Topography around Thị Trấn Na Dương

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Thị Trấn Na Dương.

Within 3 km, the terrain around Thị Trấn Na Dương has only modest variations in elevation — a maximum elevation change of 193 m around an average of 294 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,313 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,567 m.

The land around Thị Trấn Na Dương is covered by trees (47%) and cropland (22%) within 3 km, trees (78%) within 16 km, and trees (87%) within 80 km.

3 km
193 m
16 km
1,313 m
80 km
1,567 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Lạng Sơn 26 km · Chũ 54 km · Thị Trấn Ba Chẽ 59 km · Thị Trấn Tiên Yên 62 km · Thành Phố Uông Bí 77 km · Thị Trấn Đầm Hà 77 km · Thị Trấn Thất Khê 79 km · Thị Trấn Mạo Khê 81 km

Vietnam travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B / C / F
220 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$5,066
2025
Happiness
6.4 / 10
World Happiness, 2025
Safe drinking water
59%
of population, 2024
Homicide rate
1.5
per 100k, 2011
Road deaths
30.6
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 500
Religion
none 86%Catholic 6%Buddhist 6%Protestant 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 Thị Trấn Na Dương (21.7025°, 106.9555°, elevation 287 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. 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).