Thành Phố Uông Bí weather in January

In January, Thành Phố Uông Bí sees average daytime highs of 20°C and overnight lows near 14°C, with 30 mm of rain across 6 wet days and about 10.9 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 20°C through the month. The sky is clear or mostly clear about 14% of the time in January, and the air most often feels dry.

Daylight stretches from about 10 h 42 min at the start of January to 11 hours by month's end. Set against the rest of the year, January is Thành Phố Uông Bí's 7th-clearest and 7th-windiest month. For the whole year in context, see Thành Phố Uông Bí's year-round climate.

Daytime high
20°
12th warmest
Overnight low
14°
1st coldest
Rainfall
30 mm
6 wet days
Daylight
10 h 54 min
6:37 AM – 5:28 PM
Cloud cover
76%
7th clearest
Wind
9 km/h
7th windiest
Solar energy
2.41 kWh/m²
Travel score
6.4
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 January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 20°C through the month.

A typical January day in Thành Phố Uông Bí reaches about 20°C in the afternoon and slips back to 14°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 24°C. Set against its neighbours, January runs about 2°C cooler than December and about 1°C cooler than February.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
12114
22014
32014
42014
52014
62014
72014
82014
92014
102014
112014
122014
132014
142014
151914
161914
171914
181914
191914
201914
211914
221914
231914
241914
251914
261914
271914
281914
291914
301914
312014

How January really feels in Thành Phố Uông Bí

Once humidity and wind are folded in, January 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

January 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 January compares with the rest of the year at a glance. January is the 12th-warmest and 10th-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 January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 9% of January, with mostly cloudy or overcast conditions the remaining 77%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13268
23169
33070
42872
52773
62773
72575
82575
92476
102377
112278
122278
132278
142179
152179
162179
172179
182080
192080
202080
212179
222278
232278
242278
252278
262278
272377
282377
292476
302476
312377

Chance of precipitation in January

Any precipitation

Thành Phố Uông Bí gets around 30 mm of rain over 6 wet days in January. 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 21% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
119
220
320
420
520
621
721
821
921
1021
1121
1220
1320
1420
1520
1619
1719
1819
1919
2018
2118
2218
2318
2418
2518
2619
2719
2819
2919
3019
3119

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 48% of days. Sticky, muggy-or-worse air turns up on roughly 14% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1462021131
2461921131
3461921141
4461821141
5461821141
6461721151
7471721151
8471721151
9471721151
10471721151
11481720141
12481720141
13481820141
14481820131
15481820131
16491820121
17491920121
18491920121
19491920110
20501920110
21501920110
22501920110
23501920110
24511820110
25501820111
26501820111
27511720111
28511720111
29511720111
30491820122
31491820122

Wind in January

Winds average 9 km/h in January.

Across January, 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
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 10 h 42 min at the start of January to 11 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over January. Sunrise moves from 6:34 AM to 6:35 AM, and sunset from 5:18 PM to 5:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.76:345:18
210.76:345:19
310.86:345:20
410.86:355:20
510.86:355:21
610.86:355:21
710.86:355:22
810.86:365:23
910.86:365:23
1010.86:365:24
1110.86:365:24
1210.86:365:25
1310.86:365:26
1410.86:375:26
1510.86:375:27
1610.96:375:28
1710.96:375:28
1810.96:375:29
1910.96:375:30
2010.96:375:30
2110.96:375:31
2210.96:375:32
2310.96:375:32
2410.96:365:33
2511.06:365:34
2611.06:365:34
2711.06:365:35
2811.06:365:35
2911.06:365:36
3011.06:355:37
3111.06:355:37

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.41 kWh/m² — the year's lowest.

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 — January's 2.41 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.6Moderate
22.6Moderate
32.5Moderate
42.5Moderate
52.5Moderate
62.5Moderate
72.5Moderate
82.4Moderate
92.4Moderate
102.4Moderate
112.4Moderate
122.4Moderate
132.4Moderate
142.4Moderate
152.4Moderate
162.4Moderate
172.4Moderate
182.4Moderate
192.4Moderate
202.4Moderate
212.4Moderate
222.4Moderate
232.4Moderate
242.4Moderate
252.4Moderate
262.5Moderate
272.5Moderate
282.5Moderate
292.5Moderate
302.5Moderate
312.6Moderate
Planning a trip in January

Hazard calendar for Thành Phố Uông Bí

In seasonPeak

In January, 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 January a good time to visit Thành Phố Uông Bí?

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

6.4
Sightseeing
5th-best month of the year
3.2
Beach & pool
12th-best month of the year

January is a reasonable time to visit Thành Phố Uông Bí for sightseeing.

What to pack for Thành Phố Uông Bí in January

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

In January, Thành Phố Uông Bí sees daytime highs around 20°C and nights near 14°C. Little to plan around — just the basics. About 6 days see rain.

Sea temperature near Thành Phố Uông Bí in January

The nearest coast averages about 20°C in January — 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 January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 7 — 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 January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January 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
January 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).