Long Xuyên weather in May

In May, Long Xuyên sees average daytime highs of 33°C and overnight lows near 26°C, with 175 mm of rain across 23.9 wet days and about 12.5 hours of daylight. It is the 3rd-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 6% of the time in May, and the air most often feels miserable.

Daylight stretches from about 12 h 24 min at the start of May to 12 h 36 min by month's end. Set against the rest of the year, May is Long Xuyên's 7th-clearest and 6th-windiest month. For the whole year in context, see Long Xuyên's year-round climate.

Daytime high
33°
3rd warmest
Overnight low
26°
12th coldest
Rainfall
175 mm
23.9 wet days
Daylight
12 h 30 min
5:40 AM – 6:09 PM
Cloud cover
81%
7th clearest
Wind
9 km/h
6th windiest
Solar energy
5.36 kWh/m²
Travel score
2.2
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 33°C through the month.

A typical May day in Long Xuyên reaches about 33°C in the afternoon and slips back to 26°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 36°C. Set against its neighbours, May runs about 1°C cooler than April and about 2°C warmer than June.

25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13427
23427
33427
43427
53427
63427
73427
83427
93427
103327
113326
123326
133326
143326
153326
163326
173326
183326
193326
203326
213326
223326
233326
243326
253326
263326
273326
283226
293226
303226
313226

How May really feels in Long Xuyên

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
31 feel dangerously hot (≥ 39°C)
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.

Long Xuyên weather by month

How May compares with the rest of the year at a glance. May is the 3rd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°254.411.55.3
Feb32° / 23°141.711.75.0
Mar34° / 25°345.711.93.6
Apr34° / 26°8212.812.22.6
May33° / 26°17523.912.52.2
Jun32° / 26°20726.412.62.4
Jul31° / 26°21827.812.52.4
Aug31° / 26°22028.112.32.4
Sep31° / 25°26127.912.12.3
Oct31° / 25°28126.911.82.5
Nov31° / 25°13816.211.53.5
Dec31° / 24°578.511.44.7

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 11% of May, with mostly cloudy or overcast conditions the remaining 84%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13565
23466
33268
43169
52971
62872
72674
82575
92377
102278
112080
121981
131783
141585
151387
161288
171288
181090
191090
20991
21991
22892
23892
24892
25892
26892
27892
28892
29892
30892
31991

Chance of precipitation in May

Any precipitation

Long Xuyên gets around 175 mm of rain over 23.9 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 77% and peaks near 87% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
159
260
362
463
565
666
768
869
971
1072
1173
1275
1376
1477
1579
1680
1781
1882
1983
2083
2184
2284
2385
2485
2585
2686
2786
2887
2987
3087
3187

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the miserable band about 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
12080
21981
31783
41684
51585
61387
71288
81090
9991
10892
11793
12694
13595
14496
15397
16397
17298
18298
19199
20199
21199
22199
23199
24199
25199
26199
27199
28199
29199
30199
31199

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 24 min at the start of May to 12 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over May. Sunrise moves from 5:45 AM to 5:39 AM, and sunset from 6:06 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:456:06
212.45:446:06
312.45:446:07
412.45:436:07
512.45:436:07
612.45:436:07
712.45:436:07
812.45:426:07
912.45:426:07
1012.45:426:08
1112.45:416:08
1212.45:416:08
1312.55:416:08
1412.55:416:08
1512.55:406:09
1612.55:406:09
1712.55:406:09
1812.55:406:09
1912.55:406:09
2012.55:406:10
2112.55:396:10
2212.55:396:10
2312.55:396:10
2412.55:396:11
2512.55:396:11
2612.55:396:11
2712.55:396:11
2812.55:396:12
2912.55:396:12
3012.65:396:12
3112.65:396:12

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.36 kWh/m².

For context, solar energy here swings from a low near 4.33 kWh/m² to a high of 6.03 kWh/m² in April across the year — May's 5.36 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.7Bright
45.7Bright
55.7Bright
65.6Bright
75.6Bright
85.5Bright
95.5Bright
105.5Bright
115.4Bright
125.4Bright
135.4Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.1Bright
275.1Bright
285.1Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in May

Hazard calendar for Long Xuyên

In seasonPeak

In May, Long Xuyên sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.

Long Xuyên sits in the Pacific typhoon belt; the season peaks July–October.

Long Xuyên's rainy season runs May–November, when most of the year's rain falls.

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

Is May a good time to visit Long Xuyên?

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

2.2
Sightseeing
12th-best month of the year
4.1
Beach & pool
7th-best month of the year

May is a weaker month for outdoor sightseeing in Long Xuyên.

What to pack for Long Xuyên in May

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

In May, Long Xuyên sees daytime highs around 33°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

Sea temperature near Long Xuyên in May

The nearest coast averages about 31°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 68 km away) is warmest in May at about 31°C and coldest in January near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb28Warm
Mar29Tropical
Apr30Tropical
May31Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Long Xuyên in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Long Xuyên peaks around August 22 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 11 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highAug 22UV 13Dec 11UV 9
UV index (midday)Level
Jan10Very high
Feb11Extreme
Mar13Extreme
Apr12Extreme
May12Extreme
Jun11Extreme
Jul12Extreme
Aug13Extreme
Sep13Extreme
Oct9Very high
Nov9Very high
Dec9Very high

Air quality in Long Xuyên 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 Long Xuyên is worst in January — around 72 µg/m³ PM2.5 (unhealthy), about 2.4× the cleanest month (August, 30 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyJan 1172 µg/m³Aug 1331 µg/m³
PM2.5 (µg/m³)Level
Jan72Unhealthy
Feb59Unhealthy
Mar53Poor
Apr53Poor
May47Poor
Jun38Poor
Jul34Moderate
Aug30Moderate
Sep40Poor
Oct56Unhealthy
Nov68Unhealthy
Dec70Unhealthy
Location & terrain

Where is Long Xuyên?

Long Xuyên sits at 10.4°N, 105.4°E, 8 m above sea level, in Vietnam. The nearest listed city is Thốt Nốt, 17 km away.

Topography around Long Xuyên

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

Within 3 km, the terrain around Long Xuyên has only modest variations in elevation — a maximum elevation change of 15 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 23 m; within 80 km, large variations in elevation — a maximum elevation change of 680 m.

The land around Long Xuyên is covered by artificial surfaces (41%) and trees (21%) within 3 km, cropland (61%) and trees (21%) within 16 km, and cropland (70%) and trees (20%) within 80 km.

3 km
15 m
16 km
23 m
80 km
680 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Thốt Nốt 17 km · Vĩnh Thạnh 19 km · Kiến An 21 km · Lai Vung 23 km · Núi Sập 23 km · Cao Lãnh 23 km · Cờ Đỏ 33 km · Quận Đức Thịnh 34 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 Long Xuyên (10.3864°, 105.4352°, elevation 8 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).