Thị Trấn Thuận Châu weather in May

In May, Thị Trấn Thuận Châu sees average daytime highs of 30°C and overnight lows near 22°C, with 207 mm of rain across 21.2 wet days and about 13 hours of daylight. It is the 1st-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 17% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 12 h 48 min at the start of May to 13 h 12 min by month's end. Set against the rest of the year, May is Thị Trấn Thuận Châu's 8th-clearest and 7th-windiest month. For the whole year in context, see Thị Trấn Thuận Châu's year-round climate.

Daytime high
30°
1st warmest
Overnight low
22°
9th coldest
Rainfall
207 mm
21.2 wet days
Daylight
13 hours
5:31 AM – 6:32 PM
Cloud cover
72%
8th clearest
Wind
3 km/h
7th windiest
Solar energy
5.02 kWh/m²
Travel score
3.5
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical May day in Thị Trấn Thuận Châu reaches about 30°C in the afternoon and slips back to 22°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 34°C. Set against its neighbours, May runs about 1°C warmer than April and on par with June.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13021
23021
33021
43021
53021
63021
73022
83022
93022
103022
113022
123022
133022
143022
153022
163022
173022
183022
193022
203022
213022
223022
233023
243023
253023
263023
273023
283023
293023
303023
313023

How May really feels in Thị Trấn Thuận Châu

Once humidity and wind are folded in, May averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Thị Trấn Thuận Châu weather by month

How May compares with the rest of the year at a glance. May is the 1st-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan21° / 12°397.110.87.0
Feb24° / 13°357.511.37.3
Mar27° / 16°7111.611.86.5
Apr29° / 20°11215.512.54.8
May30° / 22°20721.2133.5
Jun30° / 23°35726.513.32.9
Jul29° / 23°42827.613.23.0
Aug29° / 23°3632712.73.1
Sep29° / 22°18519.612.14.1
Oct28° / 20°609.611.56.3
Nov25° / 16°375.6117.5
Dec22° / 13°386.310.77.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 15% of May, with mostly cloudy or overcast conditions the remaining 68%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25149
35050
45050
54951
64852
74753
84555
94456
104357
114060
123961
133862
143664
153565
163268
173169
182971
192872
202674
212476
222278
232278
242080
251882
261882
271585
281585
291387
301387
311189

Chance of precipitation in May

Any precipitation

Thị Trấn Thuận Châu gets around 207 mm of rain over 21.2 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 69% and peaks near 83% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
158
259
359
460
560
661
761
862
963
1063
1164
1265
1365
1466
1567
1667
1768
1869
1970
2071
2172
2273
2374
2475
2576
2678
2779
2880
2981
3082
3183

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 68% of days. Sticky, muggy-or-worse air turns up on roughly 95% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11946440
21845450
31843470
41842490
51840510
61738540
71736560
81734580
92732581
102631601
112629621
122628631
132626651
142525662
152524672
162423692
171422712
181321723
191320733
201319743
211218754
221217764
231216774
241214794
251113814
260112825
270111835
280110845
29019855
30018865
31017866

Wind in May

Winds average 3 km/h in May.

Across May, daily wind ranges from about 3 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
173calm
183calm
193calm
203calm
213calm
223calm
233calm
243calm
253calm
263calm
273calm
283calm
293calm
303calm
313calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 48 min at the start of May to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over May. Sunrise moves from 5:39 AM to 5:27 AM, and sunset from 6:26 PM to 6:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:396:26
212.85:386:26
312.85:386:27
412.85:376:27
512.85:376:27
612.95:366:28
712.95:356:28
812.95:356:29
912.95:346:29
1012.95:346:29
1112.95:336:30
1213.05:336:30
1313.05:326:31
1413.05:326:31
1513.05:316:32
1613.05:316:32
1713.05:306:33
1813.05:306:33
1913.15:306:33
2013.15:296:34
2113.15:296:34
2213.15:296:35
2313.15:286:35
2413.15:286:36
2513.15:286:36
2613.15:286:36
2713.25:276:37
2813.25:276:37
2913.25:276:38
3013.25:276:38
3113.25:276:39

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.02 kWh/m².

For context, solar energy here swings from a low near 3.08 kWh/m² to a high of 5.21 kWh/m² in April across the year — May's 5.02 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
204.9Bright
214.9Bright
224.9Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.7Bright
294.7Bright
304.7Bright
314.7Bright
Planning a trip in May

Hazard calendar for Thị Trấn Thuận Châu

In seasonPeak

In May, Thị Trấn Thuận Châu sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Thị Trấn Thuận Châu's monsoon runs May–August, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Thị Trấn Thuận Châu?

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

3.5
Sightseeing
9th-best month of the year
5.0
Beach & pool
8th-best month of the year

May is a weaker month for outdoor sightseeing in Thị Trấn Thuận Châu.

What to pack for Thị Trấn Thuận Châu in May

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

In May, Thị Trấn Thuận Châu sees daytime highs around 30°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

UV index in Thị Trấn Thuận Châu in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Thị Trấn Thuận Châu peaks around June 20 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 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 highExtremeVery highHighJun 20UV 13Dec 19UV 6
UV index (midday)Level
Jan7High
Feb9Very high
Mar11Extreme
Apr9Very high
May10Extreme
Jun13Extreme
Jul13Extreme
Aug12Extreme
Sep10Very high
Oct9Very high
Nov8Very high
Dec6High

Air quality in Thị Trấn Thuận Châu in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Thị Trấn Thuận Châu is worst in April — around 99 µg/m³ PM2.5 (unhealthy), about 8.1× the cleanest month (July, 12 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorUnhealthyModerateApr 1395 µg/m³Jul 2212 µg/m³
PM2.5 (µg/m³)Level
Jan31Moderate
Feb41Poor
Mar73Unhealthy
Apr99Unhealthy
May32Moderate
Jun14Moderate
Jul12Moderate
Aug13Moderate
Sep17Moderate
Oct23Moderate
Nov26Moderate
Dec30Moderate
Location & terrain

Where is Thị Trấn Thuận Châu?

Thị Trấn Thuận Châu sits at 21.4°N, 103.7°E, 594 m above sea level, in Vietnam. The nearest listed city is Sơn La, 27 km away.

SapaLai ChâuThị Trấn Phố Lu

Topography around Thị Trấn Thuận Châu

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Thị Trấn Thuận Châu.

Within 3 km, the terrain around Thị Trấn Thuận Châu has significant variations in elevation — a maximum elevation change of 505 m around an average of 699 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,610 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,825 m.

The land around Thị Trấn Thuận Châu is covered by trees (73%) within 3 km, trees (76%) within 16 km, and trees (69%) and grassland (26%) within 80 km.

3 km
505 m
16 km
1,610 m
80 km
2,825 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Sơn La 27 km · Ít Ong 36 km · Dien Bien Phu 69 km · Mường Lay 85 km · Nghĩa Lộ 87 km · Sapa 102 km · Lai Châu 109 km · Thị Trấn Phố Lu 111 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 Thị Trấn Thuận Châu (21.4385°, 103.69°, elevation 594 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).