Thị Trấn Ba Chẽ weather in January

In January, Thị Trấn Ba Chẽ sees average daytime highs of 18°C and overnight lows near 13°C, with 34 mm of rain across 6.3 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 18°C through the month. The sky is clear or mostly clear about 16% 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 Thị Trấn Ba Chẽ's 6th-clearest and 7th-windiest month. For the whole year in context, see Thị Trấn Ba Chẽ's year-round climate.

Daytime high
18°
12th warmest
Overnight low
13°
1st coldest
Rainfall
34 mm
6.3 wet days
Daylight
10 h 48 min
6:35 AM – 5:25 PM
Cloud cover
76%
6th clearest
Wind
8 km/h
7th windiest
Solar energy
2.53 kWh/m²
Travel score
6.2
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 18°C through the month.

A typical January day in Thị Trấn Ba Chẽ reaches about 18°C in the afternoon and slips back to 13°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 23°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)
11913
21913
31913
41913
51913
61913
71913
81913
91913
101913
111913
121813
131813
141813
151813
161813
171813
181813
191813
201813
211813
221813
231813
241813
251813
261813
271813
281813
291813
301813
311813

How January really feels in Thị Trấn Ba Chẽ

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 Ba Chẽ 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
Jan18° / 13°346.310.86.2
Feb20° / 15°215.411.36.4
Mar22° / 17°458.211.86.5
Apr26° / 21°6411.512.56.0
May29° / 24°20819.7134.0
Jun31° / 26°2982413.32.8
Jul31° / 26°33825.613.22.8
Aug31° / 25°37426.312.72.8
Sep30° / 24°22719.512.13.7
Oct28° / 22°8710.411.56.0
Nov25° / 18°497.9117.2
Dec21° / 14°336.310.76.8

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% 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 75%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13268
23268
33169
43070
52971
62773
72773
82674
92674
102476
112377
122377
132377
142278
152278
162179
172179
182278
192278
202278
212278
222278
232377
242476
252476
262476
272476
282476
292476
302575
312575

Chance of precipitation in January

Any precipitation

Thị Trấn Ba Chẽ gets around 34 mm of rain over 6.3 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 20% and peaks near 21% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
120
220
320
421
521
621
721
821
921
1021
1121
1221
1321
1421
1521
1620
1720
1820
1920
2020
2120
2220
2319
2419
2519
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 53% of days. Sticky, muggy-or-worse air turns up on roughly 7% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15023207
24923217
34922217
44921227
55021227
65020228
75020228
85119228
95119228
105219218
115219218
125319208
135419207
145320207
155420197
165420197
175420197
185520187
195620186
205620186
215620186
225720176
235620177
245620177
255719177
265719177
275718178
285718178
295618179
305618179
3155181710

Wind in January

Winds average 8 km/h in January.

Across January, 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.

0246810151015202531
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 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 6:32 AM to 6:33 AM, and sunset from 5:16 PM to 5:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.76:325:16
210.76:335:16
310.76:335:17
410.76:335:18
510.76:335:18
610.86:345:19
710.86:345:19
810.86:345:20
910.86:345:21
1010.86:345:21
1110.86:355:22
1210.86:355:23
1310.86:355:23
1410.86:355:24
1510.86:355:25
1610.86:355:25
1710.86:355:26
1810.96:355:27
1910.96:355:27
2010.96:355:28
2110.96:355:29
2210.96:355:29
2310.96:355:30
2410.96:355:30
2510.96:355:31
2611.06:355:32
2711.06:345:32
2811.06:345:33
2911.06:345:34
3011.06:345:34
3111.06:335:35

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.53 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.53 kWh/m² to a high of 4.77 kWh/m² in May across the year — January's 2.53 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.7Moderate
22.7Moderate
32.7Moderate
42.7Moderate
52.6Moderate
62.6Moderate
72.6Moderate
82.6Moderate
92.5Moderate
102.5Moderate
112.5Moderate
122.5Moderate
132.5Moderate
142.5Moderate
152.5Moderate
162.5Moderate
172.5Moderate
182.5Moderate
192.5Moderate
202.5Moderate
212.5Moderate
222.5Moderate
232.5Moderate
242.5Moderate
252.6Moderate
262.6Moderate
272.6Moderate
282.6Moderate
292.6Moderate
302.7Moderate
312.7Moderate
Planning a trip in January

Hazard calendar for Thị Trấn Ba Chẽ

In seasonPeak

In January, Thị Trấn Ba Chẽ sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Thị Trấn Ba Chẽ sits in the Pacific typhoon belt; the season peaks July–October.

Thị Trấn Ba Chẽ'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 Thị Trấn Ba Chẽ?

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

6.2
Sightseeing
5th-best month of the year
2.4
Beach & pool
12th-best month of the year

January is a reasonable time to visit Thị Trấn Ba Chẽ for sightseeing.

What to pack for Thị Trấn Ba Chẽ in January

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

In January, Thị Trấn Ba Chẽ sees daytime highs around 18°C and nights near 13°C. Little to plan around — just the basics. About 6 days see rain.

Sea temperature near Thị Trấn Ba Chẽ in January

The nearest coast averages about 19°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 39 km away) is warmest in August at about 30°C and coldest in February near 19°C.

It's comfortable for a long swim from Mar 15 to Jan 4 — about 9.7 months when the water holds above 20°C.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan19Cool
Feb19Cool
Mar20Refreshing
Apr23Refreshing
May27Warm
Jun29Tropical
Jul29Tropical
Aug30Tropical
Sep29Tropical
Oct28Warm
Nov25Warm
Dec21Refreshing

UV index in Thị Trấn Ba Chẽ 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 Thị Trấn Ba Chẽ peaks around July 11 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 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 11UV 12Dec 17UV 6
UV index (midday)Level
Jan7High
Feb8Very high
Mar9Very high
Apr8Very high
May10Extreme
Jun12Extreme
Jul13Extreme
Aug8Very high
Sep9Very high
Oct9Very high
Nov7High
Dec6High

Air quality in Thị Trấn Ba Chẽ 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 Ba Chẽ is worst in January — around 42 µg/m³ PM2.5 (poor), about 2.6× the cleanest month (July, 16 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorJan 2342 µg/m³Jul 1716 µg/m³
PM2.5 (µg/m³)Level
Jan42Poor
Feb42Poor
Mar41Poor
Apr40Poor
May26Moderate
Jun19Moderate
Jul16Moderate
Aug18Moderate
Sep21Moderate
Oct27Moderate
Nov29Moderate
Dec39Poor
Location & terrain

Where is Thị Trấn Ba Chẽ?

Thị Trấn Ba Chẽ sits at 21.3°N, 107.3°E, 16 m above sea level, in Vietnam. The nearest listed city is Thị Trấn Tiên Yên, 14 km away.

Topography around Thị Trấn Ba Chẽ

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

Within 3 km, the terrain around Thị Trấn Ba Chẽ has significant variations in elevation — a maximum elevation change of 422 m around an average of 94 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 885 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,603 m.

The land around Thị Trấn Ba Chẽ is covered by trees (88%) within 3 km, trees (82%) within 16 km, and trees (57%) and water (35%) within 80 km.

3 km
422 m
16 km
885 m
80 km
1,603 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
January weather nearby: Thị Trấn Tiên Yên 14 km · Cẩm Phả Mines 28 km · Cẩm Phả 29 km · Thị Trấn Đầm Hà 34 km · Ha Long 42 km · Thị Trấn Na Dương 59 km · Thành Phố Uông Bí 59 km · Cát Bà 65 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 Ba Chẽ (21.2716°, 107.2836°, 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). 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).