Port Antonio weather in May

In May, Port Antonio sees average daytime highs of 27°C and overnight lows near 24°C, with 138 mm of rain across 21.3 wet days and about 12.8 hours of daylight. It is the 6th-warmest and 3rd-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 27% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 12 h 36 min at the start of May to 13 hours by month's end. Set against the rest of the year, May is Port Antonio's 9th-clearest and 7th-windiest month. For the whole year in context, see Port Antonio's year-round climate.

Daytime high
27°
6th warmest
Overnight low
24°
7th coldest
Rainfall
138 mm
21.3 wet days
Daylight
12 h 54 min
5:36 AM – 6:28 PM
Cloud cover
60%
9th clearest
Wind
13 km/h
7th windiest
Solar energy
6.45 kWh/m²
Travel score
4.9
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 May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical May day in Port Antonio reaches about 27°C in the afternoon and slips back to 24°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 28°C. Set against its neighbours, May runs about 1°C warmer than April and on par with June.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12724
22724
32724
42724
52724
62724
72724
82724
92724
102724
112724
122724
132724
142724
152724
162724
172724
182724
192724
202724
212724
222724
232724
242724
252724
262724
272724
282724
292724
302725
312825

How May really feels in Port Antonio

Once humidity and wind are folded in, May 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

May 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 May compares with the rest of the year at a glance. May is the 6th-warmest and 3rd-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 23% of May, with mostly cloudy or overcast conditions the remaining 50%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16832
26832
36832
46634
56634
66535
76436
86238
96139
105941
115743
125545
135446
145248
155050
164852
174654
184456
194258
204258
214060
224060
233961
243862
253862
263862
273862
283763
293763
303763
313763

Chance of precipitation in May

Any precipitation

Port Antonio gets around 138 mm of rain over 21.3 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 67% and peaks near 70% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
161
262
363
464
565
666
766
867
967
1067
1168
1268
1368
1468
1568
1668
1768
1868
1968
2069
2169
2269
2369
2470
2570
2670
2770
2869
2969
3069
3168

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the oppressive band about 93% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
16931
26931
35941
45941
54951
64951
74951
84951
94942
104942
113952
123952
133943
143943
153943
163934
172944
182944
192935
202935
212935
221936
231936
241927
251927
261927
270928
280919
290919
3009010
3109010

Wind in May

Winds average 13 km/h in May.

Across May, daily wind ranges from about 12 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
112light breeze
212light 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 May

DaylightNight

Daylight runs from about 12 h 36 min at the start of May to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over May. Sunrise moves from 5:44 AM to 5:33 AM, and sunset from 6:22 PM to 6:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:446:22
212.75:436:23
312.75:426:23
412.75:426:23
512.75:416:24
612.75:416:24
712.75:406:24
812.75:406:25
912.85:396:25
1012.85:396:25
1112.85:386:26
1212.85:386:26
1312.85:386:27
1412.85:376:27
1512.85:376:27
1612.95:366:28
1712.95:366:28
1812.95:366:28
1912.95:366:29
2012.95:356:29
2112.95:356:29
2212.95:356:30
2312.95:346:30
2412.95:346:31
2512.95:346:31
2613.05:346:31
2713.05:346:32
2813.05:346:32
2913.05:336:32
3013.05:336:33
3113.05:336:33

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.45 kWh/m².

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 — May's 6.45 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.7Intense
26.7Intense
36.7Intense
46.7Intense
56.7Intense
66.7Intense
76.6Intense
86.6Intense
96.6Intense
106.6Intense
116.6Intense
126.5Intense
136.5Intense
146.5Intense
156.5Intense
166.4Intense
176.4Intense
186.4Intense
196.3Intense
206.3Intense
216.3Intense
226.3Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
316.4Intense
Planning a trip in May

Hazard calendar for Port Antonio

In seasonPeak

None of Port Antonio's seasonal hazards are active in May. 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 May a good time to visit Port Antonio?

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

4.9
Sightseeing
8th-best month of the year
5.1
Beach & pool
8th-best month of the year

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

What to pack for Port Antonio in May

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

In May, Port Antonio sees daytime highs around 27°C and nights near 24°C. Pack light clothes, rain gear and sun protection. About 21 days see rain.

light clothesrain gearsun protection

Sea temperature near Port Antonio in May

The nearest coast averages about 28°C in May — 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 May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 12 (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 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 May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May 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
May 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).