Thị Trấn Nước Hai weather in January

In January, Thị Trấn Nước Hai sees average daytime highs of 16°C and overnight lows near 10°C, with 67 mm of rain across 13.3 wet days and about 10.8 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 16°C through the month. The sky is clear or mostly clear about 12% of the time in January, and the air most often feels dry.

Daylight stretches from about 10 h 36 min at the start of January to 11 hours by month's end. Set against the rest of the year, January is Thị Trấn Nước Hai's 10th-clearest and 8th-windiest month. For the whole year in context, see Thị Trấn Nước Hai's year-round climate.

Daytime high
16°
12th warmest
Overnight low
10°
1st coldest
Rainfall
67 mm
13.3 wet days
Daylight
10 h 42 min
6:42 AM – 5:27 PM
Cloud cover
79%
10th clearest
Wind
7 km/h
8th windiest
Solar energy
2.06 kWh/m²
Travel score
4.3
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 16°C through the month.

A typical January day in Thị Trấn Nước Hai reaches about 16°C in the afternoon and slips back to 10°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 21°C. Set against its neighbours, January runs about 2°C cooler than December and about 2°C cooler than February.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
11710
21710
31610
41610
51610
61610
71610
81610
91610
101610
111610
121610
131510
141510
151510
161510
171510
181510
191510
201510
211510
221510
231510
241510
251510
261510
271610
281610
291610
301610
311610

How January really feels in Thị Trấn Nước Hai

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.

Thị Trấn Nước Hai 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
Jan16° / 10°6713.310.84.3
Feb18° / 12°5211.411.25.1
Mar21° / 15°891611.85.3
Apr25° / 19°11117.112.55.3
May28° / 21°21422.313.14.3
Jun29° / 23°29325.213.43.2
Jul30° / 23°30226.413.33.1
Aug30° / 23°26824.412.83.4
Sep29° / 22°15616.812.14.8
Oct26° / 19°871211.56.3
Nov22° / 15°699.710.96.6
Dec18° / 11°509.410.65.7

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 8% of January, with mostly cloudy or overcast conditions the remaining 80%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13070
22971
32872
42872
52674
62674
72476
82476
92377
102377
112179
122080
131981
141981
151882
161882
171882
181882
191783
201783
211684
221684
231684
241684
251684
261684
271882
281882
291882
301981
312080

Chance of precipitation in January

Any precipitation

Thị Trấn Nước Hai gets around 67 mm of rain over 13.3 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 42% and peaks near 44% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
339
440
540
641
741
842
942
1043
1143
1243
1343
1443
1543
1644
1744
1844
1944
2043
2143
2243
2343
2443
2543
2642
2742
2841
2941
3040
3139

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 74% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1751870
2741880
3741880
4741880
5721990
6721990
7721990
8721990
9731890
10741880
11741880
12741880
13751780
14751780
15761770
16761770
17761770
18761770
19761770
20761770
21761770
22761770
23761770
24741880
25741880
26721891
27721891
28711991
297019101
307019101
316920101

Wind in January

Winds average 7 km/h in January.

Across January, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 10 h 36 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 24 minutes over January. Sunrise moves from 6:40 AM to 6:40 AM, and sunset from 5:17 PM to 5:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.66:405:17
210.66:405:18
310.66:405:19
410.66:415:19
510.66:415:20
610.76:415:20
710.76:415:21
810.76:415:22
910.76:425:22
1010.76:425:23
1110.76:425:24
1210.76:425:24
1310.76:425:25
1410.76:425:26
1510.76:425:26
1610.76:425:27
1710.86:425:28
1810.86:425:28
1910.86:425:29
2010.86:425:30
2110.86:425:30
2210.86:425:31
2310.86:425:32
2410.86:425:33
2510.96:425:33
2610.96:415:34
2710.96:415:35
2810.96:415:35
2910.96:415:36
3010.96:415:37
3111.06:405:37

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.06 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.06 kWh/m² to a high of 4.43 kWh/m² in August across the year — January's 2.06 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.3Moderate
22.3Moderate
32.2Moderate
42.2Moderate
52.2Moderate
62.1Moderate
72.1Moderate
82.1Moderate
92.1Moderate
102.0Moderate
112.0Moderate
122.0Moderate
132.0Moderate
142.0Moderate
152.0Moderate
162.0Moderate
172.0Moderate
182.0Moderate
192.0Moderate
202.0Moderate
212.0Moderate
222.1Moderate
232.1Moderate
242.1Moderate
252.1Moderate
262.2Moderate
272.2Moderate
282.2Moderate
292.3Moderate
302.3Moderate
312.3Moderate
Planning a trip in January

Hazard calendar for Thị Trấn Nước Hai

In seasonPeak

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

Thị Trấn Nước Hai'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 January a good time to visit Thị Trấn Nước Hai?

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

4.3
Sightseeing
8th-best month of the year
0.4
Beach & pool
12th-best month of the year

January is a reasonable time to visit Thị Trấn Nước Hai for sightseeing.

What to pack for Thị Trấn Nước Hai in January

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

In January, Thị Trấn Nước Hai sees daytime highs around 16°C and nights near 10°C. Worth packing: a warm layer and rain gear. About 13 days see rain.

a warm layerrain gear

UV index in Thị Trấn Nước Hai in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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 Nước Hai peaks around June 22 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highVery highExtremeVery highHighJun 22UV 13Dec 22UV 6
UV index (midday)Level
Jan6High
Feb8Very high
Mar11Extreme
Apr8Very high
May9Very high
Jun13Extreme
Jul13Extreme
Aug11Extreme
Sep9Very high
Oct7Very high
Nov6High
Dec6High

Air quality in Thị Trấn Nước Hai 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 Thị Trấn Nước Hai is worst in April — around 44 µg/m³ PM2.5 (poor), about 2.2× the cleanest month (July, 20 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorApr 944 µg/m³Jul 2020 µg/m³
PM2.5 (µg/m³)Level
Jan39Poor
Feb41Poor
Mar44Poor
Apr44Poor
May30Moderate
Jun23Moderate
Jul20Moderate
Aug21Moderate
Sep24Moderate
Oct28Moderate
Nov33Moderate
Dec39Poor
Location & terrain

Where is Thị Trấn Nước Hai?

Thị Trấn Nước Hai sits at 22.7°N, 106.2°E, 204 m above sea level, in Vietnam. The nearest listed city is Cao Bằng, 13 km away.

Lạng SơnHà GiangThái NguyênThị Trấn Đại Từ

Topography around Thị Trấn Nước Hai

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

Within 3 km, the terrain around Thị Trấn Nước Hai has significant variations in elevation — a maximum elevation change of 291 m around an average of 242 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 871 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,796 m.

The land around Thị Trấn Nước Hai is covered by trees (67%) and cropland (27%) within 3 km, trees (83%) within 16 km, and trees (89%) within 80 km.

3 km
291 m
16 km
871 m
80 km
1,796 m
treesgrasslandcroplandartificial surfaces
January weather nearby: Cao Bằng 13 km · Thị Trấn Trùng Khánh 40 km · Thị Trấn Thất Khê 63 km · Bắc Kạn 73 km · Lạng Sơn 117 km · Hà Giang 120 km · Thái Nguyên 131 km · Thị Trấn Đại Từ 134 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 Nước Hai (22.7374°, 106.1522°, elevation 204 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).