George Town weather in December

In December, George Town sees average daytime highs of 27°C and overnight lows near 25°C, with 47 mm of rain across 9.2 wet days and about 10.9 hours of daylight. It is the 9th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 62% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 10 h 54 min at the start of December to 10 h 54 min by month's end. Set against the rest of the year, December is George Town's 5th-clearest and 1st-windiest month. For the whole year in context, see George Town's year-round climate.

Daytime high
27°
9th warmest
Overnight low
25°
4th coldest
Rainfall
47 mm
9.2 wet days
Daylight
10 h 48 min
6:56 AM – 5:47 PM
Cloud cover
39%
5th clearest
Wind
27 km/h
1st windiest
Solar energy
4.24 kWh/m²
Travel score
7.1
out of 10

George Town is capital and largest city of the Cayman Islands.

Density
1,013/km²
people per km²

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 27°C through the month.

A typical December day in George Town reaches about 27°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 25°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)
12726
22726
32726
42726
52726
62726
72726
82725
92725
102725
112725
122725
132725
142725
152725
162725
172725
182725
192625
202625
212625
222625
232625
242625
252625
262625
272625
282625
292625
302625
312625

How December really feels in George Town

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.

George Town weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 25°317.1117.6
Feb26° / 25°153.811.38.2
Mar26° / 25°194.511.98.2
Apr27° / 26°184.412.47.9
May28° / 26°9711.912.96.4
Jun28° / 27°10213.713.15.3
Jul29° / 27°6112.1135.4
Aug29° / 27°8915.212.75.0
Sep29° / 27°1411912.14.4
Oct28° / 27°21420.111.64.7
Nov27° / 26°1201311.16.2
Dec27° / 25°479.210.97.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 62% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 24%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17723
27723
37723
47921
57921
67921
77921
87822
97723
107723
117723
127624
137525
147525
157525
167525
177525
187525
197525
207525
217525
227525
237525
247525
257723
267723
277723
287723
297723
307723
317723

Chance of precipitation in December

Any precipitation

George Town gets around 47 mm of rain over 9.2 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 30% and peaks near 34% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
134
233
333
432
531
630
730
829
929
1029
1129
1229
1329
1429
1530
1630
1730
1831
1931
2031
2131
2231
2330
2430
2529
2629
2728
2828
2927
3027
3126

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 69% of days. Sticky, muggy-or-worse air turns up on roughly 91% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11317727
21417726
31417726
41416736
51516735
61516735
71616725
81616734
92616724
102716714
112716723
122717713
132717713
142817703
152818702
162818702
172819692
182819692
192820682
202820682
212821672
222821672
232821672
242822671
252722681
262722681
272723671
282723671
292723671
303724651
313724651

Wind in December

Winds average 27 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 26 km/h on the calmest days to 27 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
127breezy
227breezy
327breezy
427breezy
527breezy
627breezy
727breezy
826breezy
926breezy
1026breezy
1126breezy
1226breezy
1326breezy
1426breezy
1526breezy
1626breezy
1726breezy
1826breezy
1926breezy
2027breezy
2127breezy
2227breezy
2327breezy
2427breezy
2527breezy
2627breezy
2727breezy
2827breezy
2927breezy
3027breezy
3127breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 54 min at the start of December to 10 h 54 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 6:48 AM to 7:03 AM, and sunset from 5:43 PM to 5:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.96:485:43
210.96:485:43
310.96:495:43
410.96:495:43
510.96:505:44
610.96:515:44
710.96:515:44
810.96:525:44
910.96:525:45
1010.96:535:45
1110.96:545:45
1210.96:545:46
1310.96:555:46
1410.86:555:46
1510.86:565:47
1610.86:565:47
1710.86:575:47
1810.86:575:48
1910.86:585:48
2010.86:585:49
2110.86:595:49
2210.86:595:50
2310.87:005:50
2410.87:005:51
2510.87:015:51
2610.87:015:52
2710.87:025:52
2810.87:025:53
2910.87:025:53
3010.87:035:54
3110.97:035:54

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.24 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.24 kWh/m² to a high of 6.77 kWh/m² in July across the year — December's 4.24 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.3Bright
54.3Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.3Bright
134.2Bright
144.2Bright
154.2Bright
164.2Bright
174.2Bright
184.2Bright
194.2Bright
204.2Bright
214.2Bright
224.2Bright
234.2Bright
244.2Bright
254.2Bright
264.2Bright
274.2Bright
284.2Bright
294.2Bright
304.2Bright
314.3Bright
Planning a trip in December

Hazard calendar for George Town

In seasonPeak

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

George Town sits in the Atlantic hurricane belt; the season peaks August–October.

George Town's rainy season runs September–November, when most of the year's rain falls.

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

Is December a good time to visit George Town?

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

7.1
Sightseeing
5th-best month of the year
7.0
Beach & pool
5th-best month of the year

December is one of the better times to visit George Town for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for George Town in December

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

In December, George Town sees daytime highs around 27°C and nights near 25°C. Worth packing: light clothes, rain gear and a windbreaker. About 9 days see rain.

light clothesrain geara windbreaker

Sea temperature near George Town in December

The nearest coast averages about 28°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 August at about 30°C and coldest in February near 27°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
Jan27Warm
Feb27Warm
Mar27Warm
Apr27Warm
May28Tropical
Jun29Tropical
Jul29Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov28Tropical
Dec28Warm

UV index in George Town 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 George Town peaks around May 13 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 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 highMay 13UV 12Dec 16UV 7
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar12Extreme
Apr12Extreme
May12Extreme
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep12Extreme
Oct10Very high
Nov8Very high
Dec7High

Air quality in George Town 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 George Town is worst in June — around 27 µg/m³ PM2.5 (moderate), about 4.2× the cleanest month (January, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 2126 µg/m³Jan 106 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb8Good
Mar8Good
Apr10Good
May14Moderate
Jun27Moderate
Jul24Moderate
Aug19Moderate
Sep13Moderate
Oct10Good
Nov7Good
Dec7Good
Location & terrain

Where is George Town?

George Town sits at 19.3°N, 81.4°W, 3 m above sea level, in Cayman Islands. The nearest listed city is West Bay, 11 km away.

West Bay

Topography around George Town

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

Within 3 km, the terrain around George Town has only modest variations in elevation — a maximum elevation change of 21 m around an average of 2 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 21 m; within 80 km, only modest variations in elevation — a maximum elevation change of 24 m.

The land around George Town is covered by water (46%) and artificial surfaces (29%) within 3 km, water (87%) within 16 km, and water (97%) within 80 km.

3 km
21 m
16 km
21 m
80 km
24 m
treesgrasslandartificial surfacesbare terrainwatermangroves
December weather nearby: West Bay 11 km · Trinidad 315 km · Nueva Gerona 325 km · Condado 329 km · Cienfuegos 332 km · Negril 338 km · Cumanayagua 341 km · Abreus 343 km

Cayman Islands travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 113% of US
price level, 2024
GDP per capita
$104,293
2024
Homicide rate
4.4
per 100k, 2020
Income group
High
World Bank
Religion
Protestant 61%none 17%Roman Catholic 14%other 5%

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 George Town (19.2866°, -81.3744°, elevation 3 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).