Thanh Hóa weather in April

In April, Thanh Hóa sees average daytime highs of 29°C and overnight lows near 23°C, with 57 mm of rain across 7.2 wet days and about 12.4 hours of daylight. It is the 6th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 27°C in the first days to 31°C by the end. The sky is clear or mostly clear about 17% of the time in April, and the air most often feels oppressive.

Daylight stretches from about 12 h 12 min at the start of April to 12 h 42 min by month's end. Set against the rest of the year, April is Thanh Hóa's 4th-clearest and 5th-windiest month. For the whole year in context, see Thanh Hóa's year-round climate.

Daytime high
29°
6th warmest
Overnight low
23°
6th coldest
Rainfall
57 mm
7.2 wet days
Daylight
12 h 30 min
5:44 AM – 6:11 PM
Cloud cover
70%
4th clearest
Wind
10 km/h
5th windiest
Solar energy
4.78 kWh/m²
Travel score
5.8
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 April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 27°C in the first days to 31°C by the end.

A typical April day in Thanh Hóa reaches about 29°C in the afternoon and slips back to 23°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 34°C. Set against its neighbours, April runs about 4°C warmer than March and about 4°C cooler than May.

15°20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
12621
22721
32721
42721
52722
62722
72722
82822
92822
102822
112822
122822
132823
142923
152923
162923
172923
182923
192923
203023
213024
223024
233024
243024
253024
263024
273024
283124
293124
303125

How April really feels in Thanh Hóa

Once humidity and wind are folded in, April averages 15 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
15
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in April is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Thanh Hóa weather by month

How April compares with the rest of the year at a glance. April is the 6th-warmest and 8th-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 April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 14% of April, with mostly cloudy or overcast conditions the remaining 69%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12674
22674
32773
42773
52872
62872
72872
83070
93070
103070
113169
123268
133268
143268
153466
163466
173466
183367
193367
203268
213268
223367
233367
243367
253268
263367
273367
283367
293268
303268

Chance of precipitation in April

Any precipitation

Thanh Hóa gets around 57 mm of rain over 7.2 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 24% and peaks near 33% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
120
220
320
420
520
620
720
820
920
1020
1120
1221
1321
1422
1522
1623
1724
1824
1925
2026
2126
2227
2328
2429
2529
2630
2731
2832
2933
3033

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the oppressive band about 38% of days. Sticky, muggy-or-worse air turns up on roughly 88% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1461130418
2351130429
33511284211
43511274212
52511264313
62511254314
72511244316
82411234217
91411224219
101411214221
111411204123
121411194125
131411184027
141310174029
150310163931
160310163933
17039153834
18029153736
19028153738
20028143739
21017143641
22016143643
23016133544
24015133546
25015123448
26014123449
27004123351
28004113253
29004113154
30003113056

Wind in April

Winds average 10 km/h in April.

Across April, 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.

051015151015202530
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

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 12 min at the start of April to 12 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over April. Sunrise moves from 5:57 AM to 5:33 AM, and sunset from 6:07 PM to 6:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:576:07
212.25:566:07
312.25:556:07
412.25:546:07
512.25:536:08
612.35:526:08
712.35:516:08
812.35:506:08
912.35:496:09
1012.35:496:09
1112.45:486:09
1212.45:476:10
1312.45:466:10
1412.45:456:10
1512.45:446:10
1612.55:446:11
1712.55:436:11
1812.55:426:11
1912.55:416:12
2012.55:406:12
2112.55:406:12
2212.65:396:13
2312.65:386:13
2412.65:376:13
2512.65:376:13
2612.65:366:14
2712.65:356:14
2812.75:356:14
2912.75:346:15
3012.75:336:15

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.78 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 — April's 4.78 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.0Bright
24.1Bright
34.2Bright
44.2Bright
54.3Bright
64.3Bright
74.4Bright
84.4Bright
94.5Bright
104.6Bright
114.6Bright
124.7Bright
134.7Bright
144.8Bright
154.8Bright
164.9Bright
174.9Bright
185.0Bright
195.0Bright
205.0Bright
215.1Bright
225.1Bright
235.1Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.3Bright
305.3Bright
Planning a trip in April

Hazard calendar for Thanh Hóa

In seasonPeak

In April, 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 April a good time to visit Thanh Hóa?

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

5.8
Sightseeing
6th-best month of the year
6.9
Beach & pool
1st-best month of the year

April is a reasonable time to visit Thanh Hóa for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Thanh Hóa in April

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

In April, Thanh Hóa sees daytime highs around 29°C and nights near 23°C. Pack light clothes. Worth having: sun protection. About 7 days see rain.

light clothessun protection

Sea temperature near Thanh Hóa in April

The nearest coast averages about 24°C in April — 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 April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 9 (very high — sun protection essential). 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 April

GoodModeratePoorUnhealthyVery unhealthy

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