Thành Phố Uông Bí weather in December

In December, Thành Phố Uông Bí sees average daytime highs of 22°C and overnight lows near 15°C, with 29 mm of rain across 5.7 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 23°C in the first days to 21°C by the end. The sky is clear or mostly clear about 27% 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 Thành Phố Uông Bí's 3rd-clearest and 8th-windiest month. For the whole year in context, see Thành Phố Uông Bí's year-round climate.

Daytime high
22°
10th warmest
Overnight low
15°
2nd coldest
Rainfall
29 mm
5.7 wet days
Daylight
10 h 42 min
6:27 AM – 5:11 PM
Cloud cover
63%
3rd clearest
Wind
8 km/h
8th windiest
Solar energy
2.75 kWh/m²
Travel score
7.1
out of 10

Thành Phố Uông Bí is city in north-east, Vietnam.

Density
249/km²
people per km²
Founded
1961

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 23°C in the first days to 21°C by the end.

A typical December day in Thành Phố Uông Bí reaches about 22°C in the afternoon and slips back to 15°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 26°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)
12317
22317
32317
42316
52316
62316
72216
82216
92216
102216
112215
122215
132215
142215
152115
162115
172115
182115
192115
202115
212115
222114
232114
242114
252114
262114
272114
282114
292114
302114
312114

How December really feels in Thành Phố Uông Bí

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.

Thành Phố Uông Bí 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
Jan20° / 14°30610.96.4
Feb21° / 16°195.711.36.5
Mar23° / 18°439.111.96.6
Apr27° / 22°751212.55.6
May31° / 25°24119.8133.6
Jun32° / 27°26022.513.32.6
Jul32° / 27°29024.613.22.5
Aug32° / 26°37126.612.72.5
Sep31° / 25°24220.312.13.4
Oct29° / 22°10412.511.55.4
Nov26° / 19°537.8117.1
Dec22° / 15°295.710.77.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 61%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14555
24456
34357
44258
54060
64060
73961
83862
93862
103763
113763
123763
133862
143862
153961
163862
173961
183961
194060
204060
214060
224060
234060
244060
254060
263862
273862
283763
293763
303565
313367

Chance of precipitation in December

Any precipitation

Thành Phố Uông Bí gets around 29 mm of rain over 5.7 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 19% and peaks near 23% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
123
223
322
422
521
621
720
820
920
1019
1119
1219
1318
1418
1518
1618
1717
1817
1917
2017
2117
2217
2317
2417
2517
2617
2718
2818
2918
3019
3119

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 44% of days. Sticky, muggy-or-worse air turns up on roughly 17% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
13020221881
23221221771
33321221771
43521211670
53621211560
63722201560
73922191460
84022191450
94122181350
104322181350
114421181340
124521171340
134620171340
144720171340
154719171340
164819171330
174819171330
184819161330
194919161330
204919171230
214920171230
224920171220
234920171220
244920181120
254921181120
264821191110
274821191110
284721201110
294721201210
304621201210
314620211310

Wind in December

Winds average 8 km/h in December.

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 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 6:18 AM to 6:34 AM, and sunset from 5:07 PM to 5:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.86:185:07
210.86:195:07
310.86:205:07
410.86:205:07
510.86:215:08
610.86:215:08
710.86:225:08
810.86:235:08
910.86:235:09
1010.86:245:09
1110.76:245:09
1210.76:255:10
1310.76:265:10
1410.76:265:10
1510.76:275:11
1610.76:275:11
1710.76:285:11
1810.76:285:12
1910.76:295:12
2010.76:295:13
2110.76:305:13
2210.76:305:13
2310.76:315:14
2410.76:315:14
2510.76:325:15
2610.76:325:15
2710.76:325:16
2810.76:335:17
2910.76:335:17
3010.76:345:18
3110.76:345:18

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.75 kWh/m².

For context, solar energy here swings from a low near 2.41 kWh/m² to a high of 4.96 kWh/m² in June across the year — December's 2.75 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.9Moderate
22.9Moderate
32.9Moderate
42.8Moderate
52.8Moderate
62.8Moderate
72.8Moderate
82.8Moderate
92.8Moderate
102.7Moderate
112.7Moderate
122.7Moderate
132.7Moderate
142.7Moderate
152.7Moderate
162.7Moderate
172.7Moderate
182.8Moderate
192.8Moderate
202.8Moderate
212.8Moderate
222.8Moderate
232.8Moderate
242.8Moderate
252.7Moderate
262.7Moderate
272.7Moderate
282.7Moderate
292.7Moderate
302.6Moderate
312.6Moderate
Planning a trip in December

Hazard calendar for Thành Phố Uông Bí

In seasonPeak

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

Thành Phố Uông Bí sits in the Pacific typhoon belt; the season peaks July–October.

Thành Phố Uông Bí's monsoon runs May–September, 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 Thành Phố Uông Bí?

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

7.1
Sightseeing
1st-best month of the year
4.7
Beach & pool
7th-best month of the year

December is one of the better times to visit Thành Phố Uông Bí for general sightseeing.

What to pack for Thành Phố Uông Bí in December

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

In December, Thành Phố Uông Bí sees daytime highs around 22°C and nights near 15°C. Little to plan around — just the basics. About 6 days see rain.

Sea temperature near Thành Phố Uông Bí in December

The nearest coast averages about 23°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 47 km away) is warmest in August at about 30°C and coldest in February near 20°C.

It's comfortable for a long swim from Feb 28 to Jan 27 — about 11 months when the water holds above 20°C.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan20Refreshing
Feb20Cool
Mar20Refreshing
Apr23Refreshing
May27Warm
Jun29Tropical
Jul30Tropical
Aug30Tropical
Sep29Tropical
Oct28Warm
Nov26Warm
Dec23Refreshing

UV index in Thành Phố Uông Bí 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 Thành Phố Uông Bí peaks around July 10 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 highHighJul 10UV 12Dec 15UV 6
UV index (midday)Level
Jan7High
Feb7Very high
Mar8Very high
Apr7Very high
May10Very high
Jun12Extreme
Jul12Extreme
Aug8Very high
Sep9Very high
Oct9Very high
Nov6High
Dec6High

Air quality in Thành Phố Uông Bí 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 Thành Phố Uông Bí is worst in December — around 92 µg/m³ PM2.5 (unhealthy), about 2.6× the cleanest month (July, 35 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyDec 2192 µg/m³Jul 1335 µg/m³
PM2.5 (µg/m³)Level
Jan90Unhealthy
Feb80Unhealthy
Mar76Unhealthy
Apr66Unhealthy
May49Poor
Jun37Poor
Jul35Moderate
Aug40Poor
Sep59Unhealthy
Oct74Unhealthy
Nov82Unhealthy
Dec92Unhealthy
Location & terrain

Where is Thành Phố Uông Bí?

Thành Phố Uông Bí sits at 21.0°N, 106.8°E, 11 m above sea level, in Vietnam. The nearest listed city is Thị Trấn Mạo Khê, 19 km away.

Topography around Thành Phố Uông Bí

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Thành Phố Uông Bí.

Within 3 km, the terrain around Thành Phố Uông Bí has only modest variations in elevation — a maximum elevation change of 231 m around an average of 20 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,047 m; within 80 km, large variations in elevation — a maximum elevation change of 1,180 m.

The land around Thành Phố Uông Bí is covered by trees (41%) and artificial surfaces (24%) within 3 km, trees (55%) within 16 km, and trees (45%) and water (26%) within 80 km.

3 km
231 m
16 km
1,047 m
80 km
1,180 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
December weather nearby: Thị Trấn Mạo Khê 19 km · Haiphong 21 km · Thị Trấn Đông Triều 27 km · Kiến An 30 km · Ha Long 33 km · Đố Sơn 36 km · Chũ 43 km · Cát Bà 45 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 Thành Phố Uông Bí (21.0343°, 106.7705°, elevation 11 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).