Sông Cầu weather in May

In May, Sông Cầu sees average daytime highs of 30°C and overnight lows near 26°C, with 147 mm of rain across 18.2 wet days and about 12.6 hours of daylight. It is the 4th-warmest and 5th-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 21% of the time in May, and the air most often feels miserable.

Daylight stretches from about 12 h 30 min at the start of May to 12 h 42 min by month's end. Set against the rest of the year, May is Sông Cầu's 5th-clearest and 12th-windiest month. For the whole year in context, see Sông Cầu's year-round climate.

Daytime high
30°
4th warmest
Overnight low
26°
9th coldest
Rainfall
147 mm
18.2 wet days
Daylight
12 h 36 min
5:21 AM – 5:58 PM
Cloud cover
68%
5th clearest
Wind
10 km/h
12th windiest
Solar energy
5.99 kWh/m²
Travel score
3.9
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 Sông Cầu reaches about 30°C in the afternoon and slips back to 26°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°C. Set against its neighbours, May runs about 2°C warmer than April and about 1°C cooler than June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13026
23026
33026
43026
53026
63026
73026
83026
93026
103026
113026
123026
133026
143026
153026
163026
173026
183126
193126
203126
213126
223127
233127
243127
253127
263127
273127
283127
293127
303127
313127

How May really feels in Sông Cầu

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.

Sông Cầu weather by month

How May compares with the rest of the year at a glance. May is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan24° / 22°10516.311.35.9
Feb25° / 22°5310.511.66.7
Mar27° / 23°6010.411.96.7
Apr29° / 25°6410.612.35.7
May30° / 26°14718.212.63.9
Jun31° / 27°8616.112.83.5
Jul31° / 27°7914.712.73.8
Aug31° / 27°9815.512.43.6
Sep30° / 26°21522.312.13.3
Oct28° / 25°36126.411.73.8
Nov26° / 24°41023.811.44.4
Dec25° / 23°27822.411.24.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 14% of May, with mostly cloudy or overcast conditions the remaining 64%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25050
34951
44753
54654
64555
74456
84258
94060
104060
113961
123862
133763
143664
153565
163367
173367
183268
193070
202971
212872
222872
232872
242872
252773
262773
272773
282872
292872
302872
312971

Chance of precipitation in May

Any precipitation

Sông Cầu gets around 147 mm of rain over 18.2 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 58% and peaks near 69% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
145
246
347
447
548
648
749
849
950
1051
1152
1253
1354
1455
1556
1658
1759
1860
1962
2063
2165
2266
2367
2468
2568
2669
2769
2869
2968
3068
3167

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 82% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
12773
22674
32575
42377
52278
62179
72080
81981
91981
101882
111882
121882
131783
141783
151783
161783
171783
181783
191684
201684
211684
221684
231684
241684
251684
261684
271684
281684
291684
301684
311684

Wind in May

Winds average 10 km/h in May, the calmest month.

Across May, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 30 min at the start of May to 12 h 42 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 5:26 AM to 5:19 AM, and sunset from 5:54 PM to 6:02 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:265:54
212.55:265:55
312.55:255:55
412.55:255:55
512.55:245:55
612.55:245:56
712.55:245:56
812.55:235:56
912.65:235:56
1012.65:235:56
1112.65:225:57
1212.65:225:57
1312.65:225:57
1412.65:215:57
1512.65:215:58
1612.65:215:58
1712.65:215:58
1812.65:205:59
1912.65:205:59
2012.75:205:59
2112.75:205:59
2212.75:206:00
2312.75:196:00
2412.75:196:00
2512.75:196:01
2612.75:196:01
2712.75:196:01
2812.75:196:01
2912.75:196:02
3012.75:196:02
3112.75:196:02

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.99 kWh/m².

For context, solar energy here swings from a low near 3.06 kWh/m² to a high of 6.1 kWh/m² in April across the year — May's 5.99 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.1Intense
56.1Intense
66.1Intense
76.0Intense
86.0Intense
96.0Intense
106.0Intense
116.0Intense
126.0Intense
136.0Bright
146.0Bright
156.0Bright
166.0Bright
176.0Bright
186.0Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in May

Hazard calendar for Sông Cầu

In seasonPeak

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

Sông Cầu sits in the Pacific typhoon belt; the season peaks July–October.

Sông Cầu's monsoon runs September–December, when most of the year's rain falls.

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

Is May a good time to visit Sông Cầu?

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

3.9
Sightseeing
7th-best month of the year
5.5
Beach & pool
5th-best month of the year

May is a weaker month for outdoor sightseeing in Sông Cầu.

What to pack for Sông Cầu in May

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

In May, Sông Cầu sees daytime highs around 30°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

Sea temperature near Sông Cầu in May

The nearest coast averages about 28°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 19 km away) is warmest in September at about 29°C and coldest in January near 24°C.

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

22°24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan24Warm
Feb24Warm
Mar25Warm
Apr27Warm
May28Tropical
Jun29Tropical
Jul28Tropical
Aug29Tropical
Sep29Tropical
Oct28Warm
Nov27Warm
Dec25Warm

UV index in Sông Cầu 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 Sông Cầu peaks around August 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highAug 14UV 13Dec 16UV 8
UV index (midday)Level
Jan10Very high
Feb12Extreme
Mar12Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul13Extreme
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Sông Cầu 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 Sông Cầu is worst in April — around 16 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1616 µg/m³Nov 1613 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb14Moderate
Mar15Moderate
Apr16Moderate
May15Moderate
Jun16Moderate
Jul15Moderate
Aug16Moderate
Sep14Moderate
Oct14Moderate
Nov13Moderate
Dec14Moderate
Location & terrain

Where is Sông Cầu?

Sông Cầu sits at 13.5°N, 109.2°E, 10 m above sea level, in Vietnam. The nearest listed city is Qui Nhon, 36 km away.

Ninh HòaEa Drăng

Topography around Sông Cầu

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

Within 3 km, the terrain around Sông Cầu has significant variations in elevation — a maximum elevation change of 317 m around an average of 41 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 830 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,533 m.

The land around Sông Cầu is covered by water (42%) and trees (39%) within 3 km, trees (52%) and water (34%) within 16 km, and trees (46%) and water (35%) within 80 km.

3 km
317 m
16 km
830 m
80 km
1,533 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Qui Nhon 36 km · Tuy Hòa 41 km · An Nhơn 49 km · Tu Bông 77 km · An Khê 83 km · A Yun Pa 86 km · Ninh Hòa 108 km · Ea Drăng 113 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 Sông Cầu (13.4556°, 109.2235°, elevation 10 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).