Sapa weather in April

In April, Sapa sees average daytime highs of 25°C and overnight lows near 17°C, with 177 mm of rain across 21.7 wet days and about 12.5 hours of daylight. It is the 6th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 24°C in the first days to 26°C by the end. The sky is clear or mostly clear about 30% of the time in April, and the air most often feels humid.

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 Sapa's 4th-clearest and 2nd-windiest month. For the whole year in context, see Sapa's year-round climate.

Daytime high
25°
6th warmest
Overnight low
17°
6th coldest
Rainfall
177 mm
21.7 wet days
Daylight
12 h 30 min
5:49 AM – 6:20 PM
Cloud cover
59%
4th clearest
Wind
4 km/h
2nd windiest
Solar energy
5.08 kWh/m²
Travel score
5.0
out of 10

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 24°C in the first days to 26°C by the end.

A typical April day in Sapa reaches about 25°C in the afternoon and slips back to 17°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 29°C. Set against its neighbours, April runs about 3°C warmer than March and about 2°C cooler than May.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12416
22416
32416
42416
52416
62516
72516
82516
92517
102517
112517
122517
132517
142517
152617
162617
172617
182618
192618
202618
212618
222618
232618
242618
252618
262618
272618
282618
292618
302619

Sapa weather by month

How April compares with the rest of the year at a glance. April is the 6th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan18° / 10°8212.410.85.3
Feb19° / 11°731311.25.6
Mar23° / 14°13216.911.85.8
Apr25° / 17°17721.712.55.0
May27° / 20°23625.813.14.1
Jun27° / 21°34428.913.33.4
Jul27° / 21°39629.713.23.4
Aug27° / 21°38528.712.83.6
Sep26° / 20°20222.412.14.5
Oct24° / 18°10817.411.55.7
Nov22° / 14°6110.310.96.4
Dec18° / 11°631010.75.9

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 22% of April, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15149
25149
35347
45446
55446
65446
75545
85446
95446
105446
115446
125446
135347
145347
155347
165347
175248
185248
195149
205149
215050
225050
235149
245050
255050
265050
274951
284951
294951
304852

Chance of precipitation in April

Any precipitation

Sapa gets around 177 mm of rain over 21.7 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 72% and peaks near 77% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
169
269
369
469
569
669
769
869
969
1069
1169
1269
1369
1470
1570
1671
1771
1872
1973
2073
2174
2275
2375
2475
2576
2676
2776
2877
2977
3077

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the humid band about 50% of days. Sticky, muggy-or-worse air turns up on roughly 30% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11128565
21027576
3926587
4825598
57245910
67235911
76226012
86215914
95215915
105205817
114195819
124185721
134185523
143175525
153165328
163155230
173145132
182135035
192124937
202114739
212114641
222104543
23294445
24294247
25284149
26184051
27173854
28173755
29173656
30173557

Wind in April

Winds average 4 km/h in April.

Across April, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

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 6:03 AM to 5:38 AM, and sunset from 6:15 PM to 6:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:036:15
212.26:036:15
312.26:026:16
412.36:016:16
512.36:006:16
612.35:596:17
712.35:586:17
812.35:576:17
912.45:566:18
1012.45:556:18
1112.45:546:19
1212.45:536:19
1312.55:526:19
1412.55:516:20
1512.55:506:20
1612.55:496:20
1712.55:496:21
1812.65:486:21
1912.65:476:21
2012.65:466:22
2112.65:456:22
2212.65:446:23
2312.75:436:23
2412.75:436:23
2512.75:426:24
2612.75:416:24
2712.75:406:25
2812.85:406:25
2912.85:396:25
3012.85:386:26

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.08 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.85 kWh/m² to a high of 5.08 kWh/m² in April across the year — April's 5.08 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
Planning a trip in April

Hazard calendar for Sapa

In seasonPeak

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

Sapa'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 Sapa?

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

5.0
Sightseeing
7th-best month of the year
4.6
Beach & pool
2nd-best month of the year

April is a reasonable time to visit Sapa for sightseeing.

What to pack for Sapa in April

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

In April, Sapa sees daytime highs around 25°C and nights near 17°C. Pack rain gear. Worth having: light clothes and sun protection. About 22 days see rain.

rain gearlight clothessun protection

UV index in Sapa in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sapa peaks around June 21 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highVery highExtremeVery highHighJun 21UV 13Dec 18UV 5
UV index (midday)Level
Jan6High
Feb8Very high
Mar11Extreme
Apr8Very high
May10Very high
Jun14Extreme
Jul13Extreme
Aug12Extreme
Sep10Very high
Oct8Very high
Nov7High
Dec5High

Air quality in Sapa 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 Sapa is worst in April — around 70 µg/m³ PM2.5 (unhealthy), about 5.0× the cleanest month (July, 14 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorUnhealthyModerateApr 1367 µg/m³Jul 1814 µg/m³
PM2.5 (µg/m³)Level
Jan25Moderate
Feb33Moderate
Mar54Poor
Apr70Unhealthy
May28Moderate
Jun15Moderate
Jul14Moderate
Aug15Moderate
Sep18Moderate
Oct22Moderate
Nov23Moderate
Dec25Moderate
Location & terrain

Where is Sapa?

Sapa sits at 22.3°N, 103.8°E, 0 m above sea level, in Vietnam. The nearest listed city is Lào Cai, 21 km away.

Ít OngThị Trấn Việt QuangThị Trấn Thuận ChâuBắc Quang

Topography around Sapa

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

Within 3 km, the terrain around Sapa has large variations in elevation — a maximum elevation change of 957 m around an average of 1,481 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 3,006 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,050 m.

The land around Sapa is covered by trees (56%) and grassland (28%) within 3 km, trees (86%) within 16 km, and trees (84%) within 80 km.

3 km
957 m
16 km
3,006 m
80 km
3,050 m
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Lào Cai 21 km · Thị Trấn Phố Lu 35 km · Lai Châu 40 km · Mường Lay 82 km · Ít Ong 93 km · Thị Trấn Việt Quang 99 km · Thị Trấn Thuận Châu 102 km · Bắc Quang 106 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 Sapa (22.3402°, 103.8441°, elevation 0 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).