Thị Trấn Phố Lu weather in May

In May, Thị Trấn Phố Lu sees average daytime highs of 30°C and overnight lows near 23°C, with 235 mm of rain across 21.7 wet days and about 13.1 hours of daylight. It is the 4th-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 20% 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 18 min by month's end. Set against the rest of the year, May is Thị Trấn Phố Lu's 8th-clearest and 6th-windiest month. For the whole year in context, see Thị Trấn Phố Lu's year-round climate.

Daytime high
30°
4th warmest
Overnight low
23°
9th coldest
Rainfall
235 mm
21.7 wet days
Daylight
13 h 06 min
5:28 AM – 6:31 PM
Cloud cover
71%
8th clearest
Wind
4 km/h
6th windiest
Solar energy
4.78 kWh/m²
Travel score
3.6
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 Phố Lu reaches about 30°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 35°C. Set against its neighbours, May runs about 2°C warmer than April and about 1°C cooler than June.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13021
23022
33022
43022
53022
63022
73022
83022
93022
103022
113022
123022
133022
143022
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263023
273023
283124
293124
303124
313124

How May really feels in Thị Trấn Phố Lu

Once humidity and wind are folded in, May averages 28 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
28
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 Phố Lu weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan18° / 12°7316.410.85.0
Feb20° / 13°6515.511.25.3
Mar24° / 16°9618.111.85.5
Apr28° / 20°11618.412.54.8
May30° / 23°23521.713.13.6
Jun31° / 24°29623.813.32.8
Jul31° / 25°34424.613.22.9
Aug30° / 24°35223.912.83.1
Sep29° / 23°21120.512.14.0
Oct26° / 20°12716.211.55.7
Nov23° / 16°7913.510.96.2
Dec20° / 13°7013.210.75.7

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 12% 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 (%)
14654
24654
34555
44456
54456
64456
74357
84258
94159
104060
113961
123763
133664
143565
153466
163367
173268
183169
193070
202971
212773
222674
232476
242377
252179
262080
271981
281882
291783
301684
311585

Chance of precipitation in May

Any precipitation

Thị Trấn Phố Lu gets around 235 mm of rain over 21.7 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 70% and peaks near 78% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
165
265
366
466
566
666
767
867
967
1068
1168
1268
1369
1469
1569
1669
1770
1870
1970
2071
2171
2272
2373
2473
2574
2675
2776
2877
2978
3078
3178

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 66% of days. Sticky, muggy-or-worse air turns up on roughly 93% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
121136501
221135511
321134521
421133531
511032561
611031571
71930582
82929582
92927602
102826622
112825623
122724643
132723644
142622664
152621665
162520685
172519686
182519686
191418707
201417717
211417717
221316728
231315738
241314748
250313759
260213769
2702127610
2802117710
2902107810
300197911
310187912

Wind in May

Winds average 4 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
174calm
184calm
194calm
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 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over May. Sunrise moves from 5:36 AM to 5:23 AM, and sunset from 6:25 PM to 6:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:366:25
212.85:356:25
312.85:356:26
412.95:346:26
512.95:336:27
612.95:336:27
712.95:326:27
812.95:326:28
913.05:316:28
1013.05:306:29
1113.05:306:29
1213.05:296:30
1313.05:296:30
1413.05:286:31
1513.15:286:31
1613.15:286:31
1713.15:276:32
1813.15:276:32
1913.15:266:33
2013.15:266:33
2113.15:266:34
2213.25:256:34
2313.25:256:35
2413.25:256:35
2513.25:246:36
2613.25:246:36
2713.25:246:37
2813.25:246:37
2913.25:236:37
3013.25:236:38
3113.35:236:38

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.78 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.45 kWh/m² to a high of 4.78 kWh/m² in May across the year — May's 4.78 kWh/m² sits near the top of that range.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.7Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.6Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in May

Hazard calendar for Thị Trấn Phố Lu

In seasonPeak

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

Thị Trấn Phố Lu's rainy season runs May–September, when most of the year's rain falls.

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

Is May a good time to visit Thị Trấn Phố Lu?

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

3.6
Sightseeing
9th-best month of the year
4.9
Beach & pool
4th-best month of the year

May is a weaker month for outdoor sightseeing in Thị Trấn Phố Lu.

What to pack for Thị Trấn Phố Lu in May

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

In May, Thị Trấn Phố Lu sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in Thị Trấn Phố Lu 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 Phố Lu 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 Thị Trấn Phố Lu 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 Phố Lu is worst in March — around 49 µg/m³ PM2.5 (poor), about 2.8× the cleanest month (July, 17 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorMar 2349 µg/m³Jul 1817 µg/m³
PM2.5 (µg/m³)Level
Jan36Poor
Feb40Poor
Mar49Poor
Apr48Poor
May30Moderate
Jun19Moderate
Jul17Moderate
Aug18Moderate
Sep23Moderate
Oct28Moderate
Nov33Moderate
Dec36Poor
Location & terrain

Where is Thị Trấn Phố Lu?

Thị Trấn Phố Lu sits at 22.3°N, 104.2°E, 77 m above sea level, in Vietnam. The nearest listed city is Lào Cai, 29 km away.

Hà Giang

Topography around Thị Trấn Phố Lu

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

Within 3 km, the terrain around Thị Trấn Phố Lu has significant variations in elevation — a maximum elevation change of 328 m around an average of 149 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,129 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,061 m.

The land around Thị Trấn Phố Lu is covered by trees (86%) within 3 km, trees (91%) within 16 km, and trees (87%) within 80 km.

3 km
328 m
16 km
2,129 m
80 km
3,061 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Lào Cai 29 km · Sapa 35 km · Thị Trấn Việt Quang 65 km · Bắc Quang 72 km · Lai Châu 75 km · Nghĩa Lộ 87 km · Ít Ong 91 km · Hà Giang 99 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 Phố Lu (22.3192°, 104.1872°, elevation 77 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).