Charlotte Amalie weather in December

In December, Charlotte Amalie sees average daytime highs of 26°C and overnight lows near 25°C, with 47 mm of rain across 11.5 wet days and about 10.9 hours of daylight. It is the 8th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 71% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 hours at the start of December to 10 h 54 min by month's end. Set against the rest of the year, December is Charlotte Amalie's 4th-clearest and 3rd-windiest month. For the whole year in context, see Charlotte Amalie's year-round climate.

Daytime high
26°
8th warmest
Overnight low
25°
5th coldest
Rainfall
47 mm
11.5 wet days
Daylight
10 h 54 min
6:49 AM – 5:43 PM
Cloud cover
35%
4th clearest
Wind
26 km/h
3rd windiest
Solar energy
4.46 kWh/m²
Travel score
6.9
out of 10

Charlotte Amalie is capital and largest city of the United States Virgin Islands.

Density
6,369/km²
people per km²
Founded
1666

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical December day in Charlotte Amalie reaches about 26°C in the afternoon and slips back to 25°C overnight — a 1°C spread between the day's warmth and the night's chill. On most days the high lands between 26°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)
12725
22725
32725
42725
52725
62725
72725
82725
92725
102625
112625
122625
132625
142625
152625
162625
172625
182625
192625
202625
212625
222625
232625
242625
252625
262625
272625
282625
292625
302625
312625

How December really feels in Charlotte Amalie

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.

Charlotte Amalie weather by month

How December compares with the rest of the year at a glance. December is the 8th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 24°288.7117.5
Feb25° / 24°206.611.47.8
Mar25° / 24°215.911.97.9
Apr26° / 25°357.812.47.4
May27° / 26°751312.96.2
Jun28° / 26°5711.813.16.1
Jul28° / 26°8015.5135.8
Aug28° / 27°1021712.65.1
Sep28° / 27°13317.712.14.8
Oct28° / 26°1271811.65.3
Nov27° / 26°11916.411.15.7
Dec26° / 25°4711.510.96.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 71% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 15%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18218
28218
38218
48218
58218
68317
78317
88317
98317
108317
118317
128416
138416
148416
158416
168515
178416
188416
198416
208416
218515
228515
238515
248515
258713
268713
278812
288812
298812
308812
318911

Chance of precipitation in December

Any precipitation

Charlotte Amalie gets around 47 mm of rain over 11.5 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 37% and peaks near 42% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
142
241
341
441
540
640
740
840
940
1040
1139
1239
1338
1438
1538
1637
1737
1836
1936
2035
2135
2234
2334
2433
2533
2632
2731
2831
2931
3030
3130

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 71% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1319771
2319771
3320761
4320761
5320770
6320770
7321760
8321760
9321760
10321760
11322750
12322750
13323740
14323740
15424720
16424720
17425710
18425710
19426700
20427690
21428680
22428680
23429670
24429670
25430660
26430660
27430660
28431650
29431650
30431650
31432640

Wind in December

Winds average 26 km/h in December.

Across December, daily wind ranges from about 24 km/h on the calmest days to 26 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
124breezy
224breezy
324breezy
425breezy
525breezy
625breezy
725breezy
825breezy
925breezy
1025breezy
1125breezy
1225breezy
1325breezy
1426breezy
1526breezy
1626breezy
1726breezy
1826breezy
1926breezy
2026breezy
2126breezy
2226breezy
2326breezy
2426breezy
2526breezy
2626breezy
2726breezy
2826breezy
2926breezy
3026breezy
3126breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 hours at the start of December to 10 h 54 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 6:40 AM to 6:55 AM, and sunset from 5:39 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:405:39
211.06:415:39
311.06:415:39
411.06:425:39
511.06:435:40
610.96:435:40
710.96:445:40
810.96:445:40
910.96:455:41
1010.96:455:41
1110.96:465:41
1210.96:475:42
1310.96:475:42
1410.96:485:42
1510.96:485:43
1610.96:495:43
1710.96:495:43
1810.96:505:44
1910.96:505:44
2010.96:515:45
2110.96:515:45
2210.96:525:46
2310.96:525:46
2410.96:535:47
2510.96:535:47
2610.96:545:48
2710.96:545:48
2810.96:545:49
2910.96:555:49
3010.96:555:50
3110.96:555:50

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.46 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.46 kWh/m² to a high of 6.63 kWh/m² in April across the year — December's 4.46 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in December

Hazard calendar for Charlotte Amalie

In seasonPeak

None of Charlotte Amalie's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Charlotte Amalie sits in the Atlantic hurricane belt; the season peaks August–October.

Charlotte Amalie's rainy season runs May–May, when most of the year's rain falls.

Charlotte Amalie sees seasonal dust haze (July), heaviest in July.

Atlantic hurricane
Rainy season
Dust
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Charlotte Amalie?

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

6.9
Sightseeing
5th-best month of the year
6.7
Beach & pool
5th-best month of the year

December is a reasonable time to visit Charlotte Amalie for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Charlotte Amalie in December

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

In December, Charlotte Amalie sees daytime highs around 26°C and nights near 25°C. Worth packing: light clothes, rain gear and a windbreaker. About 12 days see rain.

light clothesrain geara windbreaker

Sea temperature near Charlotte Amalie in December

The nearest coast averages about 27°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in September at about 29°C and coldest in February near 26°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar26Warm
Apr27Warm
May27Warm
Jun28Tropical
Jul28Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov28Tropical
Dec27Warm

UV index in Charlotte Amalie in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Charlotte Amalie peaks around April 13 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highApr 13UV 13Dec 17UV 7
UV index (midday)Level
Jan8Very high
Feb10Extreme
Mar12Extreme
Apr13Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug11Extreme
Sep12Extreme
Oct10Very high
Nov8Very high
Dec7High

Air quality in Charlotte Amalie 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 Charlotte Amalie is worst in July — around 24 µg/m³ PM2.5 (moderate), about 4.5× the cleanest month (January, 5 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1124 µg/m³Jan 15 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb7Good
Mar7Good
Apr9Good
May14Moderate
Jun24Moderate
Jul24Moderate
Aug20Moderate
Sep15Moderate
Oct15Moderate
Nov8Good
Dec5Good
Location & terrain

Where is Charlotte Amalie?

Charlotte Amalie sits at 18.3°N, 64.9°W, 6 m above sea level, in U.S. Virgin Islands. The nearest listed city is Road Town, 34 km away.

Road TownSaint Croix

Topography around Charlotte Amalie

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

Within 3 km, the terrain around Charlotte Amalie has significant variations in elevation — a maximum elevation change of 454 m around an average of 89 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 471 m; within 80 km, significant variations in elevation — a maximum elevation change of 515 m.

The land around Charlotte Amalie is covered by trees (52%) and water (29%) within 3 km, water (90%) within 16 km, and water (95%) within 80 km.

3 km
454 m
16 km
471 m
80 km
515 m
treesgrasslandartificial surfaceswater
December weather nearby: Road Town 34 km · Saint Croix 71 km · Fajardo 76 km · Humacao 97 km · Carolina 108 km · Trujillo Alto 114 km · Caguas 119 km · Guaynabo 125 km

U.S. Virgin Islands travel facts

Power plugs
Type A / B
110 V · 60 Hz
Prices
≈ 89% of US
price level, 2022
GDP per capita
$44,321
2022
Safe drinking water
99%
of population, 2024
Homicide rate
49.9
per 100k, 2012
Income group
High
World Bank

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 Charlotte Amalie (18.3419°, -64.9307°, 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).