Phú Mỹ weather in May

In May, Phú Mỹ sees average daytime highs of 33°C and overnight lows near 26°C, with 207 mm of rain across 24.4 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 9% 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 Phú Mỹ's 7th-clearest and 8th-windiest month. For the whole year in context, see Phú Mỹ's year-round climate.

Daytime high
33°
3rd warmest
Overnight low
26°
12th coldest
Rainfall
207 mm
24.4 wet days
Daylight
12 h 30 min
5:33 AM – 6:03 PM
Cloud cover
80%
7th clearest
Wind
7 km/h
8th windiest
Solar energy
5.45 kWh/m²
Travel score
2.3
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 Phú Mỹ 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 35°C. Set against its neighbours, May runs about 1°C cooler than April and about 1°C warmer than June.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13426
23426
33426
43326
53326
63326
73326
83326
93326
103326
113326
123326
133326
143326
153326
163326
173326
183326
193326
203226
213226
223226
233226
243226
253226
263226
273226
283226
293226
303226
313226

How May really feels in Phú Mỹ

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.

Phú Mỹ 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
Jan31° / 23°264.111.45.2
Feb32° / 24°10211.64.9
Mar33° / 25°244.611.94.0
Apr34° / 26°6811.912.23.1
May33° / 26°20724.412.52.3
Jun31° / 26°26827.612.62.4
Jul31° / 25°28529.312.62.5
Aug31° / 25°29429.312.42.5
Sep31° / 25°31728.612.12.4
Oct31° / 25°27227.511.82.7
Nov31° / 24°14417.811.53.7
Dec30° / 23°7210.511.44.7

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% 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 81%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
23763
33664
43367
53169
63070
72872
82773
92476
102476
112278
122179
132080
141882
151783
161684
171585
181486
191387
201387
211288
221189
231189
241189
251189
261189
271189
281090
291189
301189
311189

Chance of precipitation in May

Any precipitation

Phú Mỹ gets around 207 mm of rain over 24.4 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 78% and peaks near 90% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
155
257
359
461
562
664
766
868
970
1071
1173
1275
1376
1478
1580
1681
1782
1884
1985
2086
2187
2288
2388
2489
2589
2690
2790
2890
2990
3090
3190

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 92% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
12575
22377
32179
42080
51882
61684
71486
81288
91189
101090
11991
12892
13793
14694
15595
16496
17496
18397
19397
20298
21298
22298
23199
24199
25199
26199
27199
28199
29199
30199
31199

Wind in May

Winds average 7 km/h in May.

Across May, daily wind ranges from about 7 km/h on the calmest days to 8 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
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

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 5:38 AM to 5:32 AM, and sunset from 6:00 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:386:00
212.45:376:00
312.45:376:00
412.45:376:00
512.45:366:01
612.45:366:01
712.45:366:01
812.45:356:01
912.45:356:01
1012.45:356:01
1112.55:356:02
1212.55:346:02
1312.55:346:02
1412.55:346:02
1512.55:346:02
1612.55:336:03
1712.55:336:03
1812.55:336:03
1912.55:336:03
2012.55:336:03
2112.55:336:04
2212.55:326:04
2312.55:326:04
2412.55:326:04
2512.55:326:05
2612.55:326:05
2712.65:326:05
2812.65:326:05
2912.65:326:06
3012.65:326:06
3112.65:326:06

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.45 kWh/m².

For context, solar energy here swings from a low near 4.53 kWh/m² to a high of 6.25 kWh/m² in March across the year — May's 5.45 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Bright
25.9Bright
35.9Bright
45.8Bright
55.8Bright
65.8Bright
75.7Bright
85.7Bright
95.6Bright
105.6Bright
115.6Bright
125.5Bright
135.5Bright
145.4Bright
155.4Bright
165.4Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
315.2Bright
Planning a trip in May

Hazard calendar for Phú Mỹ

In seasonPeak

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

Phú Mỹ sits in the Pacific typhoon belt; the season peaks July–October.

Phú Mỹ'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 Phú Mỹ?

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

2.3
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 Phú Mỹ.

What to pack for Phú Mỹ in May

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

In May, Phú Mỹ 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 Phú Mỹ in May

The nearest coast averages about 30°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 29 km away) is warmest in May at about 30°C and coldest in January near 26°C.

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

24°26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar27Warm
Apr29Tropical
May30Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Phú Mỹ in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Phú Mỹ peaks around March 22 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 16 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 highMar 22UV 13Nov 16UV 9
UV index (midday)Level
Jan11Extreme
Feb12Extreme
Mar13Extreme
Apr13Extreme
May13Extreme
Jun11Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct9Very high
Nov9Very high
Dec9Very high

Air quality in Phú Mỹ 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 Phú Mỹ is worst in October — around 34 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (March, 21 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateOct 1434 µg/m³Mar 1921 µg/m³
PM2.5 (µg/m³)Level
Jan26Moderate
Feb21Moderate
Mar21Moderate
Apr21Moderate
May25Moderate
Jun30Moderate
Jul29Moderate
Aug29Moderate
Sep33Moderate
Oct34Moderate
Nov31Moderate
Dec34Moderate
Location & terrain

Where is Phú Mỹ?

Phú Mỹ sits at 10.6°N, 107.1°E, 12 m above sea level, in Vietnam. The nearest listed city is Xóm Mỹ Xuân, 2.0 km away.

Topography around Phú Mỹ

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

Within 3 km, the terrain around Phú Mỹ has only modest variations in elevation — a maximum elevation change of 42 m around an average of 17 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 515 m; within 80 km, large variations in elevation — a maximum elevation change of 911 m.

The land around Phú Mỹ is covered by trees (33%), artificial surfaces (33%) and grassland (20%) within 3 km, trees (41%) within 16 km, and trees (41%) and water (31%) within 80 km.

3 km
42 m
16 km
515 m
80 km
911 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
May weather nearby: Xóm Mỹ Xuân 2.0 km · Thành Phố Bà Rịa 19 km · Thị Trấn Ngải Giao 20 km · Long Thành 21 km · Long Diền 23 km · Thị Trấn Đất Đỏ 27 km · Cần Giờ 28 km · Ấp Phước Tĩnh 29 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 Phú Mỹ (10.6333°, 107.0667°, elevation 12 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).