Đố Sơn weather in December

In December, Đố Sơn sees average daytime highs of 21°C and overnight lows near 17°C, with 37 mm of rain across 6.5 wet days and about 10.8 hours of daylight. It is the 10th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 20°C by the end. The sky is clear or mostly clear about 29% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 h 48 min at the start of December to 10 h 48 min by month's end. Set against the rest of the year, December is Đố Sơn's 3rd-clearest and 5th-windiest month. For the whole year in context, see Đố Sơn's year-round climate.

Daytime high
21°
10th warmest
Overnight low
17°
3rd coldest
Rainfall
37 mm
6.5 wet days
Daylight
10 h 42 min
6:27 AM – 5:11 PM
Cloud cover
62%
3rd clearest
Wind
13 km/h
5th windiest
Solar energy
2.81 kWh/m²
Travel score
6.9
out of 10

Đố Sơn is Urban District of Haiphong.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 23°C in the first days to 20°C by the end.

A typical December day in Đố Sơn reaches about 21°C in the afternoon and slips back to 17°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 24°C. Set against its neighbours, December runs about 4°C cooler than November and about 2°C warmer than January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12319
22319
32319
42218
52218
62218
72218
82218
92218
102218
112118
122117
132117
142117
152117
162117
172117
182117
192117
202117
212117
222117
232116
242016
252016
262016
272016
282016
292016
302016
312016

How December really feels in Đố Sơn

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.

Đố Sơn weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan19° / 16°37710.96.3
Feb20° / 17°225.511.36.5
Mar22° / 19°397.611.96.7
Apr26° / 23°578.412.56.7
May29° / 26°20716.9134.5
Jun31° / 28°21418.413.23.3
Jul31° / 28°28120.113.13.2
Aug31° / 27°38124.412.73.0
Sep30° / 26°2902012.13.8
Oct28° / 24°13312.411.55.9
Nov25° / 21°608.2117.2
Dec21° / 17°376.510.86.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 56%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25050
34951
44951
54753
64753
74654
84555
94456
104456
114258
124258
134258
144258
154357
164357
174258
184357
194357
204456
214357
224456
234456
244456
254456
264456
274357
284357
294258
304159
313961

Chance of precipitation in December

Any precipitation

Đố Sơn gets around 37 mm of rain over 6.5 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 21% and peaks near 24% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
124
224
324
423
523
622
722
822
922
1021
1121
1221
1320
1420
1520
1620
1720
1820
1920
2020
2120
2220
2320
2421
2521
2621
2721
2822
2922
3022
3123

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the dry band about 36% of days. Sticky, muggy-or-worse air turns up on roughly 22% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
123212221121
225212220121
326222120111
427222119101
528222118101
62923211890
73023211780
83123211780
93323201770
103423201760
113523191760
123722191760
133822181750
143921181750
153921181750
164020181750
174120181750
184119191650
194219191650
204219201540
214219201540
224219211440
234219221430
244219221430
254219231330
264119241420
274119241420
284020251410
293920251510
303920251510
313820251610

Wind in December

Winds average 13 km/h in December.

Across December, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 48 min at the start of December to 10 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 6:18 AM to 6:33 AM, and sunset from 5:08 PM to 5:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.86:185:08
210.86:185:08
310.86:195:08
410.86:195:08
510.86:205:08
610.86:215:08
710.86:215:09
810.86:225:09
910.86:235:09
1010.86:235:09
1110.86:245:10
1210.86:245:10
1310.86:255:10
1410.86:255:11
1510.86:265:11
1610.76:275:11
1710.76:275:12
1810.76:285:12
1910.76:285:13
2010.76:295:13
2110.76:295:14
2210.76:305:14
2310.76:305:15
2410.76:305:15
2510.76:315:16
2610.76:315:16
2710.76:325:17
2810.76:325:17
2910.86:335:18
3010.86:335:18
3110.86:335:19

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.81 kWh/m².

For context, solar energy here swings from a low near 2.54 kWh/m² to a high of 5.22 kWh/m² in May across the year — December's 2.81 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
13.0Moderate
23.0Moderate
32.9Moderate
42.9Moderate
52.9Moderate
62.9Moderate
72.8Moderate
82.8Moderate
92.8Moderate
102.8Moderate
112.8Moderate
122.8Moderate
132.8Moderate
142.8Moderate
152.8Moderate
162.8Moderate
172.8Moderate
182.8Moderate
192.8Moderate
202.8Moderate
212.8Moderate
222.8Moderate
232.8Moderate
242.8Moderate
252.8Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.7Moderate
302.7Moderate
312.7Moderate
Planning a trip in December

Hazard calendar for Đố Sơn

In seasonPeak

In December, Đố Sơn sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Đố Sơn sits in the Pacific typhoon belt; the season peaks July–October.

Đố Sơn's monsoon runs May–September, 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 Đố Sơn?

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

6.9
Sightseeing
2nd-best month of the year
4.3
Beach & pool
10th-best month of the year

December is a reasonable time to visit Đố Sơn for sightseeing.

What to pack for Đố Sơn in December

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

In December, Đố Sơn sees daytime highs around 21°C and nights near 17°C. Little to plan around — just the basics. About 7 days see rain.

Sea temperature near Đố Sơn in December

The nearest coast averages about 23°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 13 km away) is warmest in August at about 30°C and coldest in February near 20°C.

It's comfortable for a long swim from Feb 28 to Jan 27 — about 11 months when the water holds above 20°C.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan20Refreshing
Feb20Cool
Mar20Refreshing
Apr23Refreshing
May27Warm
Jun29Tropical
Jul30Tropical
Aug30Tropical
Sep29Tropical
Oct28Warm
Nov26Warm
Dec23Refreshing

UV index in Đố Sơn in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Đố Sơn peaks around July 12 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighJul 12UV 12Dec 17UV 6
UV index (midday)Level
Jan7High
Feb8Very high
Mar8Very high
Apr8Very high
May10Very high
Jun11Extreme
Jul12Extreme
Aug7Very high
Sep8Very high
Oct9Very high
Nov7High
Dec6High

Air quality in Đố Sơn 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 Đố Sơn is worst in December — around 92 µg/m³ PM2.5 (unhealthy), about 2.6× the cleanest month (July, 35 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyDec 2192 µg/m³Jul 1335 µg/m³
PM2.5 (µg/m³)Level
Jan90Unhealthy
Feb80Unhealthy
Mar76Unhealthy
Apr66Unhealthy
May49Poor
Jun37Poor
Jul35Moderate
Aug40Poor
Sep59Unhealthy
Oct74Unhealthy
Nov82Unhealthy
Dec92Unhealthy
Location & terrain

Where is Đố Sơn?

Đố Sơn sits at 20.7°N, 106.8°E, 8 m above sea level, in Vietnam. The nearest listed city is Kiến An, 20 km away.

Topography around Đố Sơn

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

Within 3 km, the terrain around Đố Sơn has only modest variations in elevation — a maximum elevation change of 121 m around an average of 6 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 121 m; within 80 km, large variations in elevation — a maximum elevation change of 1,180 m.

The land around Đố Sơn is covered by water (52%) within 3 km, water (68%) within 16 km, and water (39%), trees (28%) and cropland (23%) within 80 km.

3 km
121 m
16 km
121 m
80 km
1,180 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
December weather nearby: Kiến An 20 km · Haiphong 20 km · Cát Bà 27 km · Thành Phố Uông Bí 36 km · Ha Long 40 km · Thị Trấn Mạo Khê 43 km · Thị Trấn Đông Triều 50 km · Hải Dương 54 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 Đố Sơn (20.7136°, 106.7894°, 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).