Port Royal weather in January

In January, Port Royal sees average daytime highs of 26°C and overnight lows near 22°C, with 27 mm of rain across 7.9 wet days and about 11 hours of daylight. It is the 11th-warmest and 11th-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 67% of the time in January, and the air most often feels muggy.

Daylight stretches from about 10 h 54 min at the start of January to 11 h 12 min by month's end. Set against the rest of the year, January is Port Royal's 3rd-clearest and 6th-windiest month. For the whole year in context, see Port Royal's year-round climate.

Daytime high
26°
11th warmest
Overnight low
22°
3rd coldest
Rainfall
27 mm
7.9 wet days
Daylight
11 hours
6:46 AM – 5:48 PM
Cloud cover
36%
3rd clearest
Wind
12 km/h
6th windiest
Solar energy
4.73 kWh/m²
Travel score
7.4
out of 10

Port Royal is settlement in Jamaica.

Founded
1494

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

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

A typical January day in Port Royal reaches about 26°C in the afternoon and slips back to 22°C overnight — a 4°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, January runs on par with December and on par with February.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12622
22622
32622
42622
52622
62622
72622
82622
92622
102622
112622
122622
132622
142622
152622
162622
172622
182622
192622
202622
212622
222622
232622
242622
252622
262622
272622
282622
292622
302622
312622

How January really feels in Port Royal

Once humidity and wind are folded in, January 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

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

Port Royal weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 22°277.9117.4
Feb26° / 22°217.111.47.5
Mar26° / 22°337.911.97.3
Apr27° / 23°35912.46.9
May28° / 24°9514.112.85.8
Jun29° / 25°7511.613.15.4
Jul29° / 25°5610.5135.4
Aug29° / 25°851412.64.9
Sep29° / 25°12818.312.14.4
Oct28° / 24°15321.711.64.4
Nov27° / 24°8113.311.26.0
Dec27° / 23°439.610.96.9

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 67% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 19% of January, with mostly cloudy or overcast conditions the remaining 14%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18119
28218
38218
48218
58317
68317
78416
88416
98515
108515
118515
128515
138614
148614
158614
168614
178713
188713
198812
208812
218812
228812
238812
248812
258812
268812
278911
288911
298911
308911
319010

Chance of precipitation in January

Any precipitation

Port Royal gets around 27 mm of rain over 7.9 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 25% and peaks near 27% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
227
327
427
527
627
727
827
927
1027
1127
1227
1326
1426
1525
1625
1725
1824
1924
2024
2124
2224
2324
2424
2524
2624
2724
2824
2924
3024
3125

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the muggy band about 69% of days. Sticky, muggy-or-worse air turns up on roughly 93% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
155144
245442
345640
445937
546135
646333
746531
846729
946828
1047026
1157025
1257124
1367123
1467222
1567321
1677221
1777320
1887319
1987319
2097318
2197318
2297417
2397417
2497417
2597516
2697516
2797516
2887616
2987715
3087715
3187715

Wind in January

Winds average 12 km/h in January.

Across January, daily wind ranges from about 12 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
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 10 h 54 min at the start of January to 11 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over January. Sunrise moves from 6:42 AM to 6:45 AM, and sunset from 5:39 PM to 5:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.96:425:39
210.96:435:39
310.96:435:40
411.06:435:40
511.06:445:41
611.06:445:42
711.06:445:42
811.06:445:43
911.06:455:43
1011.06:455:44
1111.06:455:45
1211.06:455:45
1311.06:455:46
1411.06:455:46
1511.06:465:47
1611.06:465:48
1711.06:465:48
1811.16:465:49
1911.16:465:49
2011.16:465:50
2111.16:465:51
2211.16:465:51
2311.16:465:52
2411.16:465:52
2511.16:465:53
2611.16:465:54
2711.16:465:54
2811.26:455:55
2911.26:455:55
3011.26:455:56
3111.26:455:56

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.73 kWh/m².

For context, solar energy here swings from a low near 4.46 kWh/m² to a high of 6.73 kWh/m² in July across the year — January's 4.73 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.7Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in January

Hazard calendar for Port Royal

In seasonPeak

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

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

Port Royal's rainy season runs August–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 January a good time to visit Port Royal?

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

7.4
Sightseeing
2nd-best month of the year
7.1
Beach & pool
3rd-best month of the year

January is one of the better times to visit Port Royal for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Port Royal in January

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

In January, Port Royal sees daytime highs around 26°C and nights near 22°C. Worth packing: light clothes and sun protection. About 8 days see rain.

light clothessun protection

Sea temperature near Port Royal in January

The nearest coast averages about 27°C in January — 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
Apr28Warm
May28Tropical
Jun28Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec28Tropical

UV index in Port Royal in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Port Royal peaks around April 19 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 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 19UV 12Dec 16UV 7
UV index (midday)Level
Jan8Very high
Feb10Extreme
Mar12Extreme
Apr13Extreme
May12Extreme
Jun13Extreme
Jul11Extreme
Aug12Extreme
Sep12Extreme
Oct11Extreme
Nov8Very high
Dec7Very high

Air quality in Port Royal in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Port Royal 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 Royal?

Port Royal sits at 17.9°N, 76.8°W, 0 m above sea level, in Jamaica. The nearest listed city is Portmore, 6.0 km away.

Spanish TownOld HarbourLinsteadMay Pen

Topography around Port Royal

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

Within 3 km, the terrain around Port Royal has only modest variations in elevation — a maximum elevation change of 6 m around an average of 0 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 767 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,229 m.

The land around Port Royal is covered by water (94%) within 3 km, water (46%) and trees (29%) within 16 km, and water (59%) and trees (34%) within 80 km.

3 km
6 m
16 km
767 m
80 km
2,229 m
treesgrasslandcroplandartificial surfaceswatermangroves
January weather nearby: Portmore 6.0 km · Kingston 8.0 km · Half Way Tree 9.0 km · New Kingston 10 km · Spanish Town 14 km · Old Harbour 28 km · Linstead 30 km · May Pen 43 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 Royal (17.9374°, -76.8406°, 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).