Port Antonio weather in December

In December, Port Antonio sees average daytime highs of 26°C and overnight lows near 23°C, with 123 mm of rain across 20.5 wet days and about 10.9 hours of daylight. It is the 9th-warmest and 5th-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 41% 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 Port Antonio's 5th-clearest and 3rd-windiest month. For the whole year in context, see Port Antonio's year-round climate.

Daytime high
26°
9th warmest
Overnight low
23°
5th coldest
Rainfall
123 mm
20.5 wet days
Daylight
10 h 54 min
6:35 AM – 5:29 PM
Cloud cover
50%
5th clearest
Wind
13 km/h
3rd windiest
Solar energy
4.42 kWh/m²
Travel score
5.3
out of 10

Port Antonio is town of the parish of Portland, Jamaica.

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 Port Antonio reaches about 26°C in the afternoon and slips back to 23°C overnight — a 3°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)
12624
22624
32624
42624
52624
62624
72624
82623
92623
102623
112623
122623
132623
142623
152623
162623
172623
182623
192623
202623
212623
222623
232623
242623
252623
262623
272623
282623
292623
302623
312623

How December really feels in Port Antonio

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.

Port Antonio weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 23°9820115.6
Feb25° / 22°651711.45.8
Mar25° / 23°871811.95.9
Apr26° / 23°761712.45.7
May27° / 24°13821.312.84.9
Jun28° / 25°9616.713.15.2
Jul28° / 25°8317.1135.1
Aug29° / 25°10219.912.64.5
Sep28° / 25°13121.412.14.2
Oct28° / 25°18324.711.64.2
Nov27° / 24°1562211.14.7
Dec26° / 23°12320.510.95.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 25% of December, with mostly cloudy or overcast conditions the remaining 33%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16535
26634
36535
46634
56634
66634
76535
86535
96535
106436
116436
126436
136436
146337
156436
166436
176436
186535
196634
206634
216733
226733
236832
246931
256931
267129
277129
287129
297228
307129
317129

Chance of precipitation in December

Any precipitation

Port Antonio gets around 123 mm of rain over 20.5 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 66% and peaks near 67% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
166
266
366
466
567
667
767
867
967
1067
1167
1267
1367
1467
1567
1667
1767
1867
1967
2066
2166
2266
2365
2465
2565
2665
2764
2864
2964
3063
3163

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 78% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1120781
2120781
3119791
4119791
5118801
6118801
7117811
8117820
9116830
10116830
11116830
12216820
13216820
14216820
15216820
16217810
17217810
18217810
19218800
20318790
21319780
22319780
23320770
24420760
25421750
26422740
27423730
28424720
29425710
30426700
31428680

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 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
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
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

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 6:26 AM to 6:41 AM, and sunset from 5:25 PM to 5:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:265:25
211.06:275:25
311.06:275:26
411.06:285:26
511.06:285:26
611.06:295:26
710.96:295:26
810.96:305:27
910.96:315:27
1010.96:315:27
1110.96:325:28
1210.96:325:28
1310.96:335:28
1410.96:335:29
1510.96:345:29
1610.96:355:29
1710.96:355:30
1810.96:365:30
1910.96:365:31
2010.96:375:31
2110.96:375:32
2210.96:385:32
2310.96:385:33
2410.96:385:33
2510.96:395:33
2610.96:395:34
2710.96:405:35
2810.96:405:35
2910.96:415:36
3010.96:415:36
3110.96:415:37

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.42 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.42 kWh/m² to a high of 6.79 kWh/m² in July across the year — December's 4.42 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.4Bright
74.4Bright
84.4Bright
94.4Bright
104.4Bright
114.4Bright
124.4Bright
134.4Bright
144.4Bright
154.4Bright
164.4Bright
174.4Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.4Bright
254.4Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in December

Hazard calendar for Port Antonio

In seasonPeak

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

Port Antonio sits in the Atlantic hurricane belt; the season peaks August–October.

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

Is December a good time to visit Port Antonio?

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

5.3
Sightseeing
5th-best month of the year
5.1
Beach & pool
9th-best month of the year

December is a reasonable time to visit Port Antonio for sightseeing.

What to pack for Port Antonio in December

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

In December, Port Antonio sees daytime highs around 26°C and nights near 23°C. Pack rain gear. Worth having: light clothes. About 21 days see rain.

rain gearlight clothes

Sea temperature near Port Antonio 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 September at about 29°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°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr27Warm
May28Warm
Jun28Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Warm

UV index in Port Antonio 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 Port Antonio peaks around April 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highApr 18UV 13Dec 15UV 7
UV index (midday)Level
Jan8Very high
Feb10Extreme
Mar12Extreme
Apr13Extreme
May12Extreme
Jun13Extreme
Jul11Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov8Very high
Dec7Very high

Air quality in Port Antonio 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 Port Antonio is worst in June — around 32 µg/m³ PM2.5 (moderate), about 4.2× the cleanest month (December, 8 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJun 2332 µg/m³Dec 198 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb10Good
Mar10Good
Apr12Good
May19Moderate
Jun32Moderate
Jul31Moderate
Aug25Moderate
Sep17Moderate
Oct14Moderate
Nov9Good
Dec8Good
Location & terrain

Where is Port Antonio?

Port Antonio sits at 18.2°N, 76.5°W, 0 m above sea level, in Jamaica. The nearest listed city is Morant Bay, 33 km away.

Morant BayNew KingstonHalf Way TreeKingstonPort RoyalPortmoreSpanish TownLinstead

Topography around Port Antonio

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

Within 3 km, the terrain around Port Antonio has significant variations in elevation — a maximum elevation change of 309 m around an average of 57 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,458 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,224 m.

The land around Port Antonio is covered by trees (59%) and water (36%) within 3 km, trees (51%) and water (48%) within 16 km, and water (68%) and trees (28%) within 80 km.

3 km
309 m
16 km
1,458 m
80 km
2,224 m
treesgrasslandartificial surfaceswater
December weather nearby: Morant Bay 33 km · New Kingston 40 km · Half Way Tree 41 km · Kingston 41 km · Port Royal 49 km · Portmore 51 km · Spanish Town 57 km · Linstead 61 km

Jamaica travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
110 V · 50 Hz
Prices
≈ 60% of US
price level, 2025
GDP per capita
$8,003
2025
Happiness
6.3 / 10
World Happiness, 2025
Homicide rate
49.4
per 100k, 2023
Road deaths
15.1
per 100k/yr, 2019
Income group
Upper middle
World Bank
Religion
Protestant 65%none 21%other 7%Roman Catholic 2%

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 Port Antonio (18.1789°, -76.4522°, elevation 0 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).