Vĩnh Yên weather in April

In April, Vĩnh Yên sees average daytime highs of 29°C and overnight lows near 22°C, with 81 mm of rain across 10.7 wet days and about 12.5 hours of daylight. It is the 7th-warmest and 7th-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 12% 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 48 min by month's end. Set against the rest of the year, April is Vĩnh Yên's 5th-clearest and 1st-windiest month. For the whole year in context, see Vĩnh Yên's year-round climate.

Daytime high
29°
7th warmest
Overnight low
22°
6th coldest
Rainfall
81 mm
10.7 wet days
Daylight
12 h 30 min
5:43 AM – 6:12 PM
Cloud cover
73%
5th clearest
Wind
7 km/h
1st windiest
Solar energy
3.9 kWh/m²
Travel score
5.2
out of 10

Vĩnh Yên is provincial city of Vietnam.

Density
2,345/km²
people per km²

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 Vĩnh Yên reaches about 29°C in the afternoon and slips back to 22°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 33°C. Set against its neighbours, April runs about 4°C warmer than March and about 3°C cooler than May.

15°20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
12720
22721
32721
42721
52721
62721
72821
82821
92821
102822
112822
122922
132922
142922
152922
162922
172923
183023
193023
203023
213023
223023
233023
243023
253024
263124
273124
283124
293124
303124

How April really feels in Vĩnh Yên

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.

Vĩnh Yên weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 15°378.310.86.2
Feb22° / 16°267.911.36.5
Mar25° / 19°4810.411.86.4
Apr29° / 22°8110.712.55.2
May32° / 25°20117.4133.2
Jun33° / 27°21518.213.32.4
Jul33° / 27°25120.513.22.4
Aug33° / 26°31122.112.72.5
Sep32° / 25°20117.912.13.3
Oct29° / 23°10010.511.55.4
Nov26° / 19°486.7117.2
Dec22° / 16°296.510.77.1

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 17% of April, with mostly cloudy or overcast conditions the remaining 71%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12278
22377
32476
42575
52674
62773
72674
82773
92773
102872
112872
122971
133070
143070
153070
163169
173169
183169
193169
203070
213070
223070
233070
243070
253169
263169
273070
283169
293169
303169

Chance of precipitation in April

Any precipitation

Vĩnh Yên gets around 81 mm of rain over 10.7 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 36% and peaks near 43% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
137
236
336
436
536
636
735
835
934
1034
1134
1233
1333
1433
1533
1633
1733
1833
1934
2034
2135
2236
2336
2437
2538
2639
2740
2841
2942
3043

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 39% of days. Sticky, muggy-or-worse air turns up on roughly 83% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1491831345
2481831346
3371730357
4371729368
53616283610
63616273711
72616263812
82616243814
92615233915
101615224016
111515214018
121514204019
131514194121
141513184123
151513174124
160412174126
170411164127
180411164128
190310164129
20039174130
21029174131
22028174132
23027174133
24016174135
25016174036
26015164038
27015163939
28015163841
29004163742
30004163644

Wind in April

Winds average 7 km/h in April, the windiest month of the year.

Across April, 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.

0246810151015202530
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

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 12 min at the start of April to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over April. Sunrise moves from 5:57 AM to 5:32 AM, and sunset from 6:08 PM to 6:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:576:08
212.25:566:08
312.25:556:08
412.25:546:09
512.35:536:09
612.35:526:09
712.35:516:10
812.35:506:10
912.35:496:10
1012.45:486:11
1112.45:486:11
1212.45:476:11
1312.45:466:11
1412.45:456:12
1512.55:446:12
1612.55:436:12
1712.55:426:13
1812.55:416:13
1912.55:416:14
2012.65:406:14
2112.65:396:14
2212.65:386:15
2312.65:376:15
2412.65:376:15
2512.75:366:16
2612.75:356:16
2712.75:346:16
2812.75:346:17
2912.75:336:17
3012.85:326:18

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 3.9 kWh/m².

For context, solar energy here swings from a low near 2.1 kWh/m² to a high of 4.78 kWh/m² in June across the year — April's 3.9 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
13.2Moderate
23.3Moderate
33.3Moderate
43.4Moderate
53.4Moderate
63.5Moderate
73.5Moderate
83.6Moderate
93.6Moderate
103.7Moderate
113.7Moderate
123.8Moderate
133.8Moderate
143.9Moderate
153.9Moderate
164.0Moderate
174.0Bright
184.1Bright
194.1Bright
204.1Bright
214.2Bright
224.2Bright
234.3Bright
244.3Bright
254.3Bright
264.4Bright
274.4Bright
284.4Bright
294.5Bright
304.5Bright
Planning a trip in April

Hazard calendar for Vĩnh Yên

In seasonPeak

None of Vĩnh Yên's seasonal hazards are active in April. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Vĩnh Yên'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 April a good time to visit Vĩnh Yên?

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

5.2
Sightseeing
7th-best month of the year
6.3
Beach & pool
3rd-best month of the year

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

What to pack for Vĩnh Yên in April

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

In April, Vĩnh Yên sees daytime highs around 29°C and nights near 22°C. Pack light clothes. Worth having: rain gear. About 11 days see rain.

light clothesrain gear

UV index in Vĩnh Yên in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April 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 Vĩnh Yên peaks around June 20 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 21 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highHighVery highExtremeVery highVery highHighJun 20UV 11Nov 21UV 6
UV index (midday)Level
Jan6High
Feb7High
Mar9Very high
Apr6High
May7Very high
Jun11Extreme
Jul10Extreme
Aug9Very high
Sep7High
Oct8Very high
Nov6High
Dec6High

Air quality in Vĩnh Yên 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 Vĩnh Yên is worst in December — around 171 µg/m³ PM2.5 (very unhealthy), about 3.4× the cleanest month (July, 50 µg/m³).

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecVery unhealthyUnhealthyPoorUnhealthyVery unhealthyDec 19170 µg/m³Jul 1452 µg/m³
PM2.5 (µg/m³)Level
Jan161Very unhealthy
Feb136Unhealthy
Mar122Unhealthy
Apr106Unhealthy
May76Unhealthy
Jun59Unhealthy
Jul50Poor
Aug68Unhealthy
Sep96Unhealthy
Oct125Unhealthy
Nov152Very unhealthy
Dec171Very unhealthy
Location & terrain

Where is Vĩnh Yên?

Vĩnh Yên sits at 21.3°N, 105.6°E, 19 m above sea level, in Vietnam. The nearest listed city is Phúc Yên, 13 km away.

Topography around Vĩnh Yên

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

Within 3 km, the terrain around Vĩnh Yên has only modest variations in elevation — a maximum elevation change of 137 m around an average of 17 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,044 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,694 m.

The land around Vĩnh Yên is covered by artificial surfaces (44%) and trees (28%) within 3 km, trees (39%) and cropland (38%) within 16 km, and trees (68%) and cropland (22%) within 80 km.

3 km
137 m
16 km
1,044 m
80 km
1,694 m
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Phúc Yên 13 km · Việt Trì 21 km · Sơn Tây 21 km · Quang Minh 22 km · Đan Phượng 25 km · Cổ Đô 25 km · Sóc Sơn 26 km · Thượng Cát 27 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 Vĩnh Yên (21.3089°, 105.6049°, elevation 19 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).