Thanh Hóa weather in December

In December, Thanh Hóa sees average daytime highs of 22°C and overnight lows near 16°C, with 26 mm of rain across 5.1 wet days and about 10.8 hours of daylight. It is the 10th-warmest and 10th-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 22% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 h 54 min at the start of December to 10 h 48 min by month's end. Set against the rest of the year, December is Thanh Hóa's 3rd-clearest and 1st-windiest month. For the whole year in context, see Thanh Hóa's year-round climate.

Daytime high
22°
10th warmest
Overnight low
16°
2nd coldest
Rainfall
26 mm
5.1 wet days
Daylight
10 h 48 min
6:29 AM – 5:17 PM
Cloud cover
68%
3rd clearest
Wind
10 km/h
1st windiest
Solar energy
2.75 kWh/m²
Travel score
7.1
out of 10

Thanh Hóa is capital city of Thanh Hóa province.

Density
5,791/km²
people per km²
Founded
1994

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 Thanh Hóa reaches about 22°C in the afternoon and slips back to 16°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 18°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)
12418
22318
32318
42318
52318
62317
72317
82317
92217
102217
112217
122217
132217
142216
152216
162216
172216
182216
192216
202216
212216
222216
232116
242116
252116
262116
272116
282116
292116
302116
312116

How December really feels in Thanh Hóa

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.

Thanh Hóa weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan21° / 15°265.410.96.7
Feb22° / 17°153.511.37.1
Mar25° / 19°335.511.97.2
Apr29° / 23°577.212.45.8
May32° / 26°16714.612.93.4
Jun34° / 28°16713.813.22.5
Jul33° / 28°20616.313.12.6
Aug32° / 27°30921.712.72.7
Sep31° / 25°28920.612.13.3
Oct29° / 23°18015.111.55.1
Nov26° / 20°598.311.16.9
Dec22° / 16°265.110.87.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 65%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
23862
33763
43862
53763
63664
73565
83466
93466
103466
113466
123466
133466
143367
153466
163565
173664
183664
193664
203763
213763
223763
233763
243664
253664
263664
273565
283466
293367
303268
313169

Chance of precipitation in December

Any precipitation

Thanh Hóa gets around 26 mm of rain over 5.1 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 17% and peaks near 24% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
124
224
323
422
521
621
720
819
918
1018
1117
1216
1316
1415
1515
1615
1714
1814
1914
2015
2115
2215
2315
2415
2515
2616
2716
2817
2917
3018
3118

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 32% of days. Sticky, muggy-or-worse air turns up on roughly 26% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
119212322142
220212322131
321212321121
422212321111
524212321101
62522232091
72622232081
82722232081
92822221971
103022221970
113122211960
123222211960
133421201860
143521201860
153521201860
163620191860
173620191860
183720201860
193719201760
203819201760
213819211760
223819211650
233819221650
243819221750
253719221740
263719231840
273620231830
283520231930
293520232020
303420222120
313420222220

Wind in December

Winds average 10 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 10 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 54 min at the start of December to 10 h 48 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 6:20 AM to 6:36 AM, and sunset from 5:13 PM to 5:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.96:205:13
210.96:215:14
310.96:215:14
410.96:225:14
510.96:225:14
610.96:235:14
710.86:245:15
810.86:245:15
910.86:255:15
1010.86:255:15
1110.86:265:16
1210.86:275:16
1310.86:275:16
1410.86:285:17
1510.86:285:17
1610.86:295:17
1710.86:295:18
1810.86:305:18
1910.86:305:19
2010.86:315:19
2110.86:315:20
2210.86:325:20
2310.86:325:20
2410.86:335:21
2510.86:335:21
2610.86:345:22
2710.86:345:22
2810.86:345:23
2910.86:355:24
3010.86:355:24
3110.86:365:25

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 2.53 kWh/m² to a high of 5.47 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
32.8Moderate
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
172.8Moderate
182.8Moderate
192.8Moderate
202.8Moderate
212.8Moderate
222.8Moderate
232.8Moderate
242.8Moderate
252.8Moderate
262.7Moderate
272.7Moderate
282.7Moderate
292.7Moderate
302.7Moderate
312.6Moderate
Planning a trip in December

Hazard calendar for Thanh Hóa

In seasonPeak

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

Thanh Hóa sits in the Pacific typhoon belt; the season peaks July–October.

Thanh Hóa's monsoon runs May–October, 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 Thanh Hóa?

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

7.1
Sightseeing
2nd-best month of the year
5.0
Beach & pool
7th-best month of the year

December is one of the better times to visit Thanh Hóa for general sightseeing.

What to pack for Thanh Hóa in December

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

In December, Thanh Hóa sees daytime highs around 22°C and nights near 16°C. Worth packing: light clothes. About 5 days see rain.

light clothes

Sea temperature near Thanh Hóa 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 23 km away) is warmest in August at about 30°C and coldest in February near 21°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan21Refreshing
Feb21Refreshing
Mar21Refreshing
Apr24Refreshing
May28Warm
Jun29Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct28Warm
Nov26Warm
Dec23Refreshing

UV index in Thanh Hóa 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 Thanh Hóa peaks around August 14 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highHighAug 14UV 12Dec 15UV 6
UV index (midday)Level
Jan7Very high
Feb9Very high
Mar10Very high
Apr9Very high
May9Very high
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep10Very high
Oct9Very high
Nov7High
Dec6High

Air quality in Thanh Hóa 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 Thanh Hóa is worst in April — around 65 µg/m³ PM2.5 (unhealthy), about 3.3× the cleanest month (July, 20 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyApr 1065 µg/m³Jul 1920 µg/m³
PM2.5 (µg/m³)Level
Jan65Unhealthy
Feb63Unhealthy
Mar63Unhealthy
Apr65Unhealthy
May43Poor
Jun25Moderate
Jul20Moderate
Aug23Moderate
Sep33Moderate
Oct46Poor
Nov55Poor
Dec64Unhealthy
Location & terrain

Where is Thanh Hóa?

Thanh Hóa sits at 19.8°N, 105.8°E, 5 m above sea level, in Vietnam. The nearest listed city is Sầm Sơn, 16 km away.

Topography around Thanh Hóa

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

Within 3 km, the terrain around Thanh Hóa has only modest variations in elevation — a maximum elevation change of 76 m around an average of 6 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 271 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,521 m.

The land around Thanh Hóa is covered by artificial surfaces (55%) and trees (20%) within 3 km, cropland (51%) within 16 km, and trees (47%), water (26%) and cropland (21%) within 80 km.

3 km
76 m
16 km
271 m
80 km
1,521 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Sầm Sơn 16 km · Nga Sơn 31 km · Bỉm Sơn 32 km · Thị Trấn Lam Sơn 40 km · Nghi Sơn 53 km · Ninh Binh 56 km · Hoàng Mai 59 km · Nam Định 83 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 Thanh Hóa (19.8°, 105.7667°, elevation 5 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).