Móng Cái weather in January

In January, Móng Cái sees average daytime highs of 17°C and overnight lows near 14°C, with 69 mm of rain across 12.7 wet days and about 10.8 hours of daylight. It is the 12th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 17°C through the month. The sky is clear or mostly clear about 22% 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 Móng Cái's 6th-clearest and 3rd-windiest month. For the whole year in context, see Móng Cái's year-round climate.

Daytime high
17°
12th warmest
Overnight low
14°
1st coldest
Rainfall
69 mm
12.7 wet days
Daylight
10 h 48 min
6:33 AM – 5:22 PM
Cloud cover
69%
6th clearest
Wind
14 km/h
3rd windiest
Solar energy
2.69 kWh/m²
Travel score
5.0
out of 10

Móng Cái is provincial city of Vietnam.

Density
211/km²
people per km²

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 17°C through the month.

A typical January day in Móng Cái reaches about 17°C in the afternoon and slips back to 14°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 20°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)
11815
21815
31814
41814
51814
61714
71714
81714
91714
101714
111714
121714
131714
141714
151714
161714
171714
181714
191714
201714
211714
221714
231714
241714
251714
261714
271714
281714
291714
301714
311714

How January really feels in Móng Cái

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.

Móng Cái weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan17° / 14°6912.710.85.0
Feb18° / 15°501111.35.4
Mar21° / 18°7413.111.85.7
Apr24° / 22°7112.712.56.2
May28° / 25°20919134.8
Jun30° / 27°28823.513.33.4
Jul30° / 27°3802513.23.2
Aug30° / 27°37424.612.73.3
Sep29° / 26°25318.612.14.3
Oct27° / 24°9910.311.56.7
Nov23° / 20°679.1117.1
Dec19° / 16°538.810.76.3

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 12% of January, with mostly cloudy or overcast conditions the remaining 67%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24258
34159
43961
53862
63763
73763
83664
93565
103466
113367
123268
133169
143169
153070
162971
172971
183070
193070
203070
213070
223169
233169
243169
253169
263169
273268
283268
293367
303367
313367

Chance of precipitation in January

Any precipitation

Móng Cái gets around 69 mm of rain over 12.7 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 40% and peaks near 43% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
134
235
336
437
538
638
739
840
940
1041
1141
1241
1342
1442
1542
1643
1743
1843
1943
2043
2142
2242
2342
2442
2541
2641
2741
2840
2940
3039
3138

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 55% of days. Sticky, muggy-or-worse air turns up on roughly 8% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15121208
25121208
35021209
45120209
55120209
65219209
75219209
85318199
95418199
105418199
115518189
125518189
135518189
145618178
155619178
165619178
175619178
185719177
195719177
205719177
215719177
225619187
235718187
245718187
255717197
265717197
275617207
285517208
295616208
305616208
315416219

Wind in January

Winds average 14 km/h in January.

Across January, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

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 6:30 AM to 6:31 AM, and sunset from 5:13 PM to 5:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.76:305:13
210.76:305:13
310.76:315:14
410.76:315:14
510.76:315:15
610.76:315:16
710.76:325:16
810.76:325:17
910.86:325:17
1010.86:325:18
1110.86:325:19
1210.86:325:19
1310.86:335:20
1410.86:335:21
1510.86:335:21
1610.86:335:22
1710.86:335:23
1810.86:335:23
1910.96:335:24
2010.96:335:25
2110.96:335:25
2210.96:335:26
2310.96:335:27
2410.96:325:27
2510.96:325:28
2610.96:325:29
2711.06:325:29
2811.06:325:30
2911.06:325:31
3011.06:315:31
3111.06:315:32

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.69 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.69 kWh/m² to a high of 5.1 kWh/m² in May across the year — January's 2.69 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
132.6Moderate
142.6Moderate
152.6Moderate
162.6Moderate
172.6Moderate
182.6Moderate
192.6Moderate
202.7Moderate
212.7Moderate
222.7Moderate
232.7Moderate
242.7Moderate
252.7Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.9Moderate
312.9Moderate
Planning a trip in January

Hazard calendar for Móng Cái

In seasonPeak

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

Móng Cái sits in the Pacific typhoon belt; the season peaks July–October.

Móng Cái'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 Móng Cái?

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

5.0
Sightseeing
7th-best month of the year
1.2
Beach & pool
12th-best month of the year

January is a reasonable time to visit Móng Cái for sightseeing.

What to pack for Móng Cái in January

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

In January, Móng Cái sees daytime highs around 17°C and nights near 14°C. Worth packing: rain gear. About 13 days see rain.

rain gear

Sea temperature near Móng Cái 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 19 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 Dec 30 — about 9.6 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
Oct27Warm
Nov24Warm
Dec21Refreshing

UV index in Móng Cái 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 Móng Cái peaks around July 9 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 9UV 12Dec 17UV 6
UV index (midday)Level
Jan6High
Feb8Very high
Mar9Very high
Apr8Very high
May10Very high
Jun12Extreme
Jul12Extreme
Aug8Very high
Sep9Very high
Oct9Very high
Nov7High
Dec6High

Air quality in Móng Cái 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 Móng Cái is worst in December — around 46 µg/m³ PM2.5 (poor), about 2.8× the cleanest month (July, 16 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorDec 2346 µg/m³Jul 1416 µg/m³
PM2.5 (µg/m³)Level
Jan45Poor
Feb42Poor
Mar44Poor
Apr38Poor
May25Moderate
Jun17Moderate
Jul16Moderate
Aug18Moderate
Sep25Moderate
Oct32Moderate
Nov35Moderate
Dec46Poor
Location & terrain

Where is Móng Cái?

Móng Cái sits at 21.5°N, 108.0°E, 9 m above sea level, in Vietnam. The nearest listed city is Thị Trấn Đầm Hà, 43 km away.

Cẩm PhảThị Trấn Na DươngHa LongLạng Sơn

Topography around Móng Cái

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Móng Cái.

Within 3 km, the terrain around Móng Cái has only modest variations in elevation — a maximum elevation change of 43 m around an average of 8 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 367 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,472 m.

The land around Móng Cái is covered by artificial surfaces (38%) and trees (24%) within 3 km, water (44%) and trees (38%) within 16 km, and trees (53%) and water (40%) within 80 km.

3 km
43 m
16 km
367 m
80 km
1,472 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
January weather nearby: Thị Trấn Đầm Hà 43 km · Thị Trấn Tiên Yên 62 km · Thị Trấn Ba Chẽ 76 km · Cẩm Phả Mines 89 km · Cẩm Phả 92 km · Thị Trấn Na Dương 106 km · Ha Long 112 km · Lạng Sơn 130 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 Móng Cái (21.5247°, 107.9662°, elevation 9 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).