Port Antonio weather in March

In March, Port Antonio sees average daytime highs of 25°C and overnight lows near 23°C, with 87 mm of rain across 18 wet days and about 11.9 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 54% of the time in March, and the air most often feels muggy.

Daylight stretches from about 11 h 36 min at the start of March to 12 h 06 min by month's end. Set against the rest of the year, March is Port Antonio's 2nd-clearest and 5th-windiest month. For the whole year in context, see Port Antonio's year-round climate.

Daytime high
25°
10th warmest
Overnight low
23°
2nd coldest
Rainfall
87 mm
18 wet days
Daylight
11 h 54 min
6:19 AM – 6:12 PM
Cloud cover
41%
2nd clearest
Wind
13 km/h
5th windiest
Solar energy
6.16 kWh/m²
Travel score
5.9
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 March

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 25°C through the month.

A typical March day in Port Antonio reaches about 25°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 24°C and 26°C. Set against its neighbours, March runs on par with February and about 1°C cooler than April.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12522
22522
32522
42522
52522
62522
72522
82522
92522
102522
112522
122522
132522
142522
152522
162523
172523
182523
192623
202623
212623
222623
232623
242623
252623
262623
272623
282623
292623
302623
312623

How March really feels in Port Antonio

Once humidity and wind are folded in, March 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

March 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 March compares with the rest of the year at a glance. March is the 10th-warmest and 9th-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 March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 54% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 29% of March, with mostly cloudy or overcast conditions the remaining 17%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18416
28416
38317
48317
58317
68218
78218
88218
98218
108218
118119
128317
138317
148317
158317
168317
178218
188218
198218
208218
218317
228317
238317
248317
258317
268317
278317
288317
298317
308218
318218

Chance of precipitation in March

Any precipitation

Port Antonio gets around 87 mm of rain over 18 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 58% and peaks near 60% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
156
256
355
455
555
655
756
856
957
1057
1158
1259
1359
1459
1560
1660
1760
1860
1960
2060
2160
2260
2360
2460
2560
2660
2760
2860
2959
3059
3159

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the muggy band about 50% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1155935
2155935
3155935
4165736
5165736
6165736
7165637
8165637
9155638
10155539
11155539
12145540
13145441
14145342
15135343
16035344
17035245
18025246
19025147
20024948
21024850
22024751
23024652
24024553
25024454
26024256
27024157
28024058
29023860
30013762
31013564

Wind in March

Winds average 13 km/h in March.

Across March, 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.

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
2713light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 h 36 min at the start of March to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over March. Sunrise moves from 6:31 AM to 6:07 AM, and sunset from 6:07 PM to 6:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:316:07
211.66:306:08
311.66:296:08
411.76:296:08
511.76:286:09
611.76:276:09
711.76:266:09
811.76:266:10
911.76:256:10
1011.86:246:10
1111.86:236:10
1211.86:236:11
1311.86:226:11
1411.86:216:11
1511.96:206:11
1611.96:196:12
1711.96:186:12
1811.96:186:12
1911.96:176:12
2011.96:166:13
2112.06:156:13
2212.06:146:13
2312.06:136:13
2412.06:136:13
2512.06:126:14
2612.06:116:14
2712.16:106:14
2812.16:096:14
2912.16:086:14
3012.16:086:15
3112.16:076:15

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 6.16 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 — March's 6.16 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
86.0Bright
96.0Bright
106.0Intense
116.0Intense
126.0Intense
136.1Intense
146.1Intense
156.1Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.3Intense
216.3Intense
226.3Intense
236.3Intense
246.3Intense
256.4Intense
266.4Intense
276.4Intense
286.5Intense
296.5Intense
306.5Intense
316.5Intense
Planning a trip in March

Hazard calendar for Port Antonio

In seasonPeak

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

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

5.9
Sightseeing
1st-best month of the year
5.4
Beach & pool
5th-best month of the year

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

What to pack for Port Antonio in March

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

In March, Port Antonio sees daytime highs around 25°C and nights near 23°C. Pack rain gear and sun protection. Worth having: light clothes. About 18 days see rain.

rain gearsun protectionlight clothes

Sea temperature near Port Antonio in March

The nearest coast averages about 27°C in March — 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 March

LowModerateHighVery highExtreme

Clear-sky midday UV in March 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 March

GoodModeratePoorUnhealthyVery unhealthy

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