Hàm Ninh weather in May

In May, Hàm Ninh sees average daytime highs of 29°C and overnight lows near 27°C, with 318 mm of rain across 27.3 wet days and about 12.5 hours of daylight. It is the 1st-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°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 30 min by month's end. Set against the rest of the year, May is Hàm Ninh's 7th-clearest and 6th-windiest month. For the whole year in context, see Hàm Ninh's year-round climate.

Daytime high
29°
1st warmest
Overnight low
27°
11th coldest
Rainfall
318 mm
27.3 wet days
Daylight
12 h 30 min
5:46 AM – 6:14 PM
Cloud cover
80%
7th clearest
Wind
17 km/h
6th windiest
Solar energy
5.43 kWh/m²
Travel score
3.2
out of 10

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical May day in Hàm Ninh reaches about 29°C in the afternoon and slips back to 27°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°C. Set against its neighbours, May runs on par with April and on par with June.

25°28°30°33°35°151015202531
Avg high (°C)Avg low (°C)
12927
22927
32927
42927
52927
62927
72927
82927
92927
102927
112927
122927
132927
142927
152927
162927
172927
182927
192927
202927
212927
222927
232927
242927
252927
262927
272927
282927
292927
302927
312927

How May really feels in Hàm Ninh

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.

Hàm Ninh weather by month

How May compares with the rest of the year at a glance. May is the 1st-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 25°348.311.56.7
Feb28° / 26°277.911.76.8
Mar28° / 27°6413.411.95.5
Apr29° / 27°12319.412.24.3
May29° / 27°31827.312.53.2
Jun29° / 27°37226.712.63.2
Jul28° / 26°40128.112.53.3
Aug28° / 26°37727.312.33.6
Sep28° / 26°39326.712.13.6
Oct28° / 26°3232711.83.7
Nov28° / 26°11815.911.54.8
Dec28° / 26°45911.46.1

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 80%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13763
23565
33466
43268
53268
63070
72971
82773
92773
102476
112476
122377
132179
142080
151981
161882
171783
181585
191585
201585
211486
221387
231387
241288
251288
261189
271189
281189
291189
301189
311288

Chance of precipitation in May

Any precipitation

Hàm Ninh gets around 318 mm of rain over 27.3 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 88% and peaks near 94% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
180
280
381
481
582
682
783
883
984
1084
1185
1285
1386
1487
1588
1689
1790
1890
1991
2092
2192
2292
2393
2493
2593
2693
2794
2894
2994
3093
3193

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 96% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
11090
2991
3892
4793
5694
6595
7595
8496
9496
10496
11397
12397
13397
14397
15397
16397
17397
18397
19298
20298
21298
22298
23298
24298
25298
26298
27298
28298
29298
30298
31298

Wind in May

Winds average 17 km/h in May.

Across May, daily wind ranges from about 14 km/h on the calmest days to 20 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
415light breeze
515light breeze
615light breeze
715light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2019light breeze
2119light breeze
2219light breeze
2319light breeze
2419light breeze
2519light breeze
2619light breeze
2720light breeze
2820light breeze
2920light breeze
3020light breeze
3120light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 24 min at the start of May to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over May. Sunrise moves from 5:50 AM to 5:45 AM, and sunset from 6:12 PM to 6:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:506:12
212.45:506:12
312.45:506:12
412.45:496:12
512.45:496:12
612.45:496:12
712.45:486:12
812.45:486:13
912.45:486:13
1012.45:476:13
1112.45:476:13
1212.45:476:13
1312.45:476:13
1412.55:466:14
1512.55:466:14
1612.55:466:14
1712.55:466:14
1812.55:466:14
1912.55:466:15
2012.55:456:15
2112.55:456:15
2212.55:456:15
2312.55:456:16
2412.55:456:16
2512.55:456:16
2612.55:456:16
2712.55:456:17
2812.55:456:17
2912.55:456:17
3012.55:456:17
3112.55:456:18

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.43 kWh/m².

For context, solar energy here swings from a low near 4.69 kWh/m² to a high of 6.33 kWh/m² in March across the year — May's 5.43 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Bright
35.9Bright
45.9Bright
55.8Bright
65.8Bright
75.8Bright
85.7Bright
95.7Bright
105.6Bright
115.5Bright
125.5Bright
135.5Bright
145.4Bright
155.4Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.1Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in May

Hazard calendar for Hàm Ninh

In seasonPeak

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

Hàm Ninh sits in the Pacific typhoon belt; the season peaks July–October.

Hàm Ninh's rainy season runs May–October, 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 Hàm Ninh?

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

3.2
Sightseeing
11th-best month of the year
4.2
Beach & pool
7th-best month of the year

May is a weaker month for outdoor sightseeing in Hàm Ninh.

What to pack for Hàm Ninh in May

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

In May, Hàm Ninh sees daytime highs around 29°C and nights near 27°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

Sea temperature near Hàm Ninh 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 offshore is warmest in May at about 31°C and coldest in January near 28°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
Jan28Warm
Feb28Tropical
Mar29Tropical
Apr30Tropical
May31Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Tropical

UV index in Hàm Ninh 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 Hàm Ninh peaks around August 20 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 20UV 13Dec 15UV 9
UV index (midday)Level
Jan10Extreme
Feb12Extreme
Mar12Extreme
Apr12Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep13Extreme
Oct11Extreme
Nov10Very high
Dec9Very high

Air quality in Hàm Ninh 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 Hàm Ninh is worst in February — around 33 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (August, 13 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateFeb 1332 µg/m³Aug 2013 µg/m³
PM2.5 (µg/m³)Level
Jan29Moderate
Feb33Moderate
Mar28Moderate
Apr23Moderate
May17Moderate
Jun14Moderate
Jul15Moderate
Aug13Moderate
Sep14Moderate
Oct18Moderate
Nov21Moderate
Dec21Moderate
Location & terrain

Where is Hàm Ninh?

Hàm Ninh sits at 10.2°N, 104.0°E, 6 m above sea level, in Vietnam. The nearest listed city is Phu Quoc, 10 km away.

Tịnh BiênCô Tô

Topography around Hàm Ninh

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

Within 3 km, the terrain around Hàm Ninh has significant variations in elevation — a maximum elevation change of 375 m around an average of 39 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 432 m; within 80 km, large variations in elevation — a maximum elevation change of 1,080 m.

The land around Hàm Ninh is covered by trees (45%) and water (45%) within 3 km, water (64%) and trees (29%) within 16 km, and water (70%) within 80 km.

3 km
375 m
16 km
432 m
80 km
1,080 m
treesgrasslandcroplandartificial surfaceswatermangroves
May weather nearby: Phu Quoc 10 km · Kep 45 km · Kampot 50 km · Hà Tiên 53 km · Sihanoukville 74 km · Kiên Hải 91 km · Tịnh Biên 108 km · Cô Tô 108 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 Hàm Ninh (10.1806°, 104.0477°, elevation 6 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).