Sông Cầu weather in December

In December, Sông Cầu sees average daytime highs of 25°C and overnight lows near 23°C, with 278 mm of rain across 22.4 wet days and about 11.2 hours of daylight. It is the 11th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 9% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 18 min at the start of December to 11 h 12 min by month's end. Set against the rest of the year, December is Sông Cầu's 8th-clearest and 1st-windiest month. For the whole year in context, see Sông Cầu's year-round climate.

Daytime high
25°
11th warmest
Overnight low
23°
3rd coldest
Rainfall
278 mm
22.4 wet days
Daylight
11 h 12 min
6:03 AM – 5:16 PM
Cloud cover
75%
8th clearest
Wind
22 km/h
1st windiest
Solar energy
3.06 kWh/m²
Travel score
4.8
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical December day in Sông Cầu reaches about 25°C in the afternoon and slips back to 23°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 27°C. Set against its neighbours, December runs about 1°C cooler than November and on par with January.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12623
22623
32623
42623
52523
62523
72523
82523
92523
102523
112523
122523
132523
142523
152523
162523
172522
182522
192522
202522
212522
222522
232522
242522
252422
262422
272422
282422
292422
302422
312422

How December really feels in Sông Cầu

Once humidity and wind are folded in, December averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Sông Cầu weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 3rd-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 December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 20% of December, with mostly cloudy or overcast conditions the remaining 71%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13466
23367
33268
43169
53169
63169
73070
83169
93070
103070
113070
123070
132971
142971
152971
162971
172971
182872
192872
202872
212674
222674
232674
242674
252674
262773
272872
282971
292971
303070
313169

Chance of precipitation in December

Any precipitation

Sông Cầu gets around 278 mm of rain over 22.4 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 72% and peaks near 80% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
180
279
379
479
578
678
778
878
978
1078
1178
1278
1377
1477
1576
1675
1774
1873
1972
2071
2170
2269
2367
2466
2565
2664
2763
2862
2961
3060
3160

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 48% of days. Sticky, muggy-or-worse air turns up on roughly 88% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10625681
20626671
30627661
40728641
50730621
60731611
70732601
80733591
90733591
100734581
110735571
120836551
130837541
141838521
151939501
161940491
1711041480
1811142460
1911143440
2021244430
2121245410
2221346390
2321347370
2431448360
2531448340
2631549330
2731549320
2831550320
2931551310
3031551310
3131551310

Wind in December

Winds average 22 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 20 km/h on the calmest days to 22 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
120breezy
220breezy
320breezy
421breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1322breezy
1422breezy
1522breezy
1622breezy
1722breezy
1822breezy
1922breezy
2022breezy
2122breezy
2222breezy
2322breezy
2422breezy
2522breezy
2621breezy
2721breezy
2821breezy
2921breezy
3021breezy
3120breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 18 min at the start of December to 11 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 5:55 AM to 6:10 AM, and sunset from 5:11 PM to 5:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.35:555:11
211.35:565:11
311.35:565:11
411.25:575:11
511.25:575:12
611.25:585:12
711.25:585:12
811.25:595:13
911.25:595:13
1011.26:005:13
1111.26:005:14
1211.26:015:14
1311.26:015:14
1411.26:025:15
1511.26:025:15
1611.26:035:16
1711.26:035:16
1811.26:045:16
1911.26:045:17
2011.26:055:17
2111.26:055:18
2211.26:065:18
2311.26:065:19
2411.26:075:19
2511.26:075:20
2611.26:085:20
2711.26:085:21
2811.26:095:21
2911.26:095:22
3011.26:095:22
3111.26:105:23

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.06 kWh/m² — the year's lowest.

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 — December's 3.06 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.2Moderate
23.2Moderate
33.1Moderate
43.1Moderate
53.1Moderate
63.1Moderate
73.1Moderate
83.0Moderate
93.0Moderate
103.0Moderate
113.0Moderate
123.0Moderate
133.0Moderate
143.0Moderate
153.0Moderate
163.0Moderate
173.0Moderate
183.0Moderate
193.0Moderate
203.1Moderate
213.1Moderate
223.1Moderate
233.1Moderate
243.1Moderate
253.1Moderate
263.2Moderate
273.2Moderate
283.2Moderate
293.3Moderate
303.3Moderate
313.3Moderate
Planning a trip in December

Hazard calendar for Sông Cầu

In seasonPeak

In December, Sông Cầu sits inside its pacific typhoon and monsoon 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 December a good time to visit Sông Cầu?

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

4.8
Sightseeing
5th-best month of the year
4.3
Beach & pool
10th-best month of the year

December is a reasonable time to visit Sông Cầu for sightseeing.

What to pack for Sông Cầu in December

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

In December, Sông Cầu sees daytime highs around 25°C and nights near 23°C. Pack rain gear. Worth having: light clothes and a windbreaker. About 22 days see rain.

rain gearlight clothesa windbreaker

Sea temperature near Sông Cầu in December

The nearest coast averages about 25°C in December — 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 December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 8 — enough to warrant sun protection. 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 December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December 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
December 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).