Weather in Port Antonio

14-day forecast · updated today, Thursday, October 29, at 1:15 am (EST)

Now · mainly clear 77 °F

Feels like: 85 °F
Low / high: 77 / 83 °F
Rain: 92% · 0.14 in
Wind: 4 mph SSW

↘ 29.88 inHg · falling UV 8 · very high

Today in Port Antonio: drizzle, 77 °F to 83 °F, with a 92% chance of rain (0.14 in) and a light breeze from the south-southwest (4 mph). Tomorrow, drizzle, 80 °F to 83 °F and a 49% chance of rain. The warmest day of the week is Saturday 31, at 86 °F.

Temperatures for the next 14 days

83° 77°
Today
83° 80°
Fri 30
86° 80°
Sat 31
86° 78°
Sun 1
84° 80°
Mon 2
82° 77°
Tue 3
82° 78°
Wed 4
83° 78°
Thu 5
81° 80°
Fri 6
82° 79°
Sat 7
83° 78°
Sun 8
85° 81°
Mon 9
86° 80°
Tue 10
85° 79°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Drizzle	77 / 83 °F	92% · 0.14 in	6 mph SSE	1.8 ft	2:04 pm	ECMWF
Fri 30	Drizzle	80 / 83 °F	49% · 0.20 in	9 mph ESE	1.8 ft	7:05 pm	ECMWF
Sat 31	Light drizzle	80 / 86 °F	67% · 0.11 in	10 mph ESE	2.4 ft	7:03 pm	ECMWF
Sun 1	Drizzle	78 / 86 °F	53% · 0.19 in	9 mph SE	2.6 ft	5:24 pm	ECMWF
Mon 2	Drizzle	80 / 84 °F	57% · 0.23 in	10 mph SE	2.2 ft	5:42 pm	ECMWF
Tue 3	Drizzle	77 / 82 °F	69% · 0.15 in	6 mph W	1.6 ft	3:42 am · 6:00 pm	ECMWF
Wed 4	Light drizzle	78 / 82 °F	51% · 0.05 in	3 mph SSW	1.2 ft	5:44 am · 6:17 pm	ECMWF
Thu 5	Light drizzle	78 / 83 °F	59% · 0.12 in	5 mph WSW	1.2 ft	7:16 am · 6:32 pm	ECMWF
Fri 6	Drizzle	80 / 81 °F	51% · 0.20 in	5 mph SW	1.0 ft	8:32 am · 6:40 pm	ECMWF
Sat 7	Drizzle	79 / 82 °F	57% · 0.24 in	5 mph WSW	0.9 ft	9:34 am · 6:27 pm	ECMWF
Sun 8	Drizzle	78 / 83 °F	53% · 0.22 in	7 mph ESE	1.4 ft	10:26 am	ECMWF
Mon 9	Light drizzle	81 / 85 °F	39% · 0.12 in	5 mph ESE	1.6 ft	11:12 am	ECMWF
Tue 10	Light drizzle	80 / 86 °F	39% · 0.05 in	7 mph SSE	1.8 ft	11:59 am	ECMWF
Wed 11	Drizzle	79 / 85 °F	43% · 0.08 in	9 mph SE	1.6 ft	12:51 pm	ECMWF

Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.

Today, every 3 hours

Time	12:00 am	3:00 am	6:00 am	9:00 am	12:00 pm	3:00 pm	6:00 pm	9:00 pm
Sky	Mainly clear	Mainly clear	Clear	Mainly clear	Drizzle	Light drizzle	Light drizzle	Mainly clear
Temperature	77°	77°	79°	82°	83°	83°	81°	80°
Chance of rain	0%	0%	0%	8%	60%	92%	60%	32%
Rain	0.00 in	0.00 in	0.00 in	0.00 in	0.03 in	0.01 in	0.01 in	0.00 in
Wind (mph)	5 SSW	4 SW	4 WSW	2 NE	5 ESE	6 ESE	5 SE	6 SE
Humidity	91%	90%	83%	72%	73%	76%	81%	85%
UV	0	0	0	4	7	3	0	0
Model	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF

Do the models agree?

Medium confidence

They broadly agree, but not quite on temperature today: take it with some caution.

What 4 forecast models say for the next few days. The closer they are, the more reliable the forecast.

HighRainWind

Do the models agree? · High
High (°F)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	83°	83°	86°	86°	84°	82°	82°
AIFS	79°	81°	81°	81°	80°	78°	79°
GFS	85°	87°	86°	86°	86°	83°	84°
ICON	85°	86°	87°	87°	89°	88°	88°
Confidence	medium	medium	medium	high	medium	medium	medium

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	0.14 in	0.20 in	0.11 in	0.19 in	0.23 in	0.15 in	0.05 in
AIFS	0.20 in	0.21 in	0.23 in	0.22 in	0.27 in	0.75 in	0.56 in
GFS	0.28 in	0.08 in	0.07 in	0.15 in	0.18 in	0.05 in	0.08 in
ICON	0.17 in	0.02 in	0.02 in	0.02 in	0.05 in	0.02 in	0.17 in
Confidence	high	medium	medium	medium	medium	medium	medium

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	618	915	1013	911	1017	614	39
AIFS	8	6	7	5	5	6	5
GFS	79	911	99	912	1114	78	79
ICON	521	521	725	517	621	723	525
Confidence	high	high	high	high	high	high	high

Chance of rain from the ensemble models

Model	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF (51 scenarios)	92%	49%	67%	53%	57%	69%	51%
GFS (GEFS, 31 scenarios)	81%	71%	68%	62%	61%	45%	48%

Each model's day runs midnight to midnight local time; models that reach fewer days are left blank. Rain: daily total. Wind: the day's highest average wind and, in small type, the strongest gust. Highlighted: values that stand out from the rest. The chance of rain comes from many runs of the same model with slightly different starting data.

Outlook

How the coming weeks and months compare with what is normal for the time of year. It is a trend, not a day-by-day forecast.

Next few weeks, compared with normal: a bit warmer and normal rain.

Next 6 weeks

When	TemperatureTemp.	Rain	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	A bit above +1.1 °F	A bit below −24%	—
Nov 9 – Nov 15Nov 9–Nov 15	A bit above +1.4 °F	Normal	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +1.4 °F	Normal	83° / 75°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +1.8 °F	Normal	83° / 75°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +1.8 °F	A bit below −26%	83° / 75°

Coming months

When	TemperatureTemp.	Rain
November	A bit above +2.3 °F	A bit below −35%
December	A bit above +2.3 °F	Normal
January	A bit above +2.3 °F	A bit above +29%
February	A bit above +2.5 °F	A bit above +38%
March	A bit above +2.3 °F	Normal

Weeks: ECMWF 46-day (average of its scenarios), against the normal of the last 20 years for those dates. Months: ECMWF SEAS5. Rain: total against normal. The further ahead, the closer it gets to normal and the less detail it can give. The long-range sea temperature isn't usable at this spot (the model's grid cell falls on land).

Port Antonio climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Port Antonio is from February to April: highs of 82 °F to 85 °F, about 3 rainy days a month and 8 hours of sunshine a day.

Hurricane season: from July to October, peaking in August. In the last 30 years (1996–2025), 13 tropical cyclones passed within 93 mi of Port Antonio, about 4 every 10 years; 8 of them with hurricane-force winds (74 mph or more). The most recent: Melissa, in October 2025.

82° 71°

JanJ
82° 71°

FebF
83° 71°

MarM
85° 73°

AprA
85° 74°

MayM
87° 76°

JunJ
88° 75°

JulJ
89° 75°

AugA
88° 75°

SepS
86° 74°

OctO
85° 73°

NovN
83° 72°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	82°	71°	8.26 in	4	7.0	81°	4.0 ft	–
FebruaryFeb	82°	71°	3.19 in	2	7.7	80°	3.9 ft	–
MarchMar	83°	71°	3.66 in	3	8.4	80°	3.8 ft	–
AprilApr	85°	73°	4.76 in	4	8.8	81°	3.1 ft	–
MayMay	85°	74°	9.84 in	10	7.3	82°	3.3 ft	–
JuneJun	87°	76°	7.38 in	7	7.7	83°	3.5 ft	–
JulyJul	88°	75°	6.90 in	5	8.5	84°	3.4 ft	3
AugustAug	89°	75°	8.03 in	9	7.7	85°	3.2 ft	4
SeptemberSep	88°	75°	8.80 in	11	7.7	85°	2.5 ft	2
OctoberOct	86°	74°	13.11 in	13	7.1	85°	2.7 ft	3
NovemberNov	85°	73°	12.71 in	9	7.0	83°	3.2 ft	1
DecemberDec	83°	72°	12.13 in	5	6.6	82°	4.0 ft	–

Month	Water	Waves	Cyclones
Jan	81°	4.0 ft	–
Feb	80°	3.9 ft	–
Mar	80°	3.8 ft	–
Apr	81°	3.1 ft	–
May	82°	3.3 ft	–
Jun	83°	3.5 ft	–
Jul	84°	3.4 ft	3
Aug	85°	3.2 ft	4
Sep	85°	2.5 ft	2
Oct	85°	2.7 ft	3
Nov	83°	3.2 ft	1
Dec	82°	4.0 ft	–

Days: rainy days in the month. Sun: hours a day.

A normal year brings 98.77 in of rain on about 82 days and about 2,800 hours of sunshine.

Cyclones: how many tropical cyclones (tropical storms, hurricanes and typhoons) passed within 93 mi in each month from 1996 to 2025, according to IBTrACS (NOAA).

1991–2020 averages. Highs, lows and rainfall: TerraClimate; rainy days (0.04 in or more): NASA POWER (MERRA-2); sunshine hours: estimated from solar radiation; water: NOAA OISST; waves (average height): ERA5, 2011–2020. Normals are not a forecast: any given year can turn out very different. Sources and licenses

Temperature

Now77 °Ffeels like 85 °F

Tomorrow80 / 83 °F

It's 77 °F now (feels like 85 °F). Today, 77 °F to 83 °F; tomorrow, 80 °F to 83 °F.

Chance of rain

Today 92% 0.14 in
Fri 30 49% 0.20 in
Sat 31 67% 0.11 in
Sun 1 53% 0.19 in
Mon 2 57% 0.23 in
Tue 3 69% 0.15 in
Wed 4 51% 0.05 in

Today the chance of rain reaches 92%, with 0.14 in in total. The next day with likely rain is Friday 30: 49% and 0.20 in.

Recent rain: last 24 hours, 0.00 in; last 3 days, 0.04 in; last 7 days, 3.17 in.

Humidity and dew point

Humidity91%

Dew point74 °F

Humidity is 91% now and the dew point is 74 °F. With a dew point this high, it feels muggy. The temperature is very close to the dew point: fog may form.

The dew point is the temperature at which the air becomes saturated: the higher it is, the heavier the air feels.

Visibility and fog

Now15 migood

Clouds35%

Visibility is good now (15 mi). No fog expected today.

The model gives visibility up to about 15 mi: beyond that, the horizon is clear.

UV index

Now0

Today's peak8very high

Fri 30: 8 · Sat 31: 8 · Sun 1: 9

Index	Level	What to do
0–2	low	No special protection needed.
3–5	moderate	Hat, sunglasses and sunscreen around midday.
6–7	high	Sunscreen, hat and shade between 12 and 4 pm.
8–10	very high	Avoid the midday sun; reflection off the water adds to it.
11+	extreme	Avoid the sun between 11 am and 5 pm; protect yourself even if it is cloudy.

Reflection off water and sand adds radiation: protect yourself more on a boat or at the beach.

Barometric pressure

↗ Rising Anglers say fish bite less for a while
→ Steady Anglers expect normal activity
↘ Falling · now Anglers say fish feed more before the change

29.8029.9030.00 29.97

Falling now (−0.03 inHg in 3 hours). It barely changes over the next 48 hours. Falling pressure: anglers say fish feed more before the change. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityFair · 27

Saharan dustNo

Previous days

The weather over the last 30 days, as the models analyzed it. Tap a day to see it hour by hour.

Day	Sky	Low / high	Rain	Max wind
Wed 28	Overcast	78 / 87 °F	0	8 mph SSE
Tue 27	Mainly clear	78 / 85 °F	0	7 mph SW
Mon 26	Light drizzle	77 / 85 °F	0.05 in	8 mph SW
Sun 25	Drizzle	78 / 84 °F	0.21 in	10 mph W
Sat 24	Showers	80 / 84 °F	1.03 in	11 mph SE
Fri 23	Light showers	78 / 83 °F	1.87 in	10 mph SE
Thu 22	Overcast	78 / 87 °F	0	14 mph SE

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Light drizzle	80 / 87 °F	0.01 in	7 mph SSW
Tue 20	Light drizzle	79 / 87 °F	0.02 in	7 mph SSE
Mon 19	Overcast	80 / 87 °F	0	11 mph SE
Sun 18	Overcast	79 / 87 °F	0	13 mph SE
Sat 17	Light drizzle	83 / 88 °F	0.06 in	14 mph SE
Fri 16	Light drizzle	81 / 87 °F	0.11 in	15 mph SE
Thu 15	Light showers	80 / 86 °F	0.36 in	13 mph ESE
Wed 14	Light showers	80 / 86 °F	0.56 in	17 mph SE
Tue 13	Drizzle	81 / 87 °F	0.13 in	14 mph SE
Mon 12	Light drizzle	80 / 86 °F	0.15 in	16 mph ESE
Sun 11	Light drizzle	82 / 88 °F	0.08 in	12 mph SE
Sat 10	Light drizzle	82 / 88 °F	0.01 in	17 mph ESE
Fri 9	Drizzle	81 / 83 °F	0.33 in	13 mph ESE
Thu 8	Heavy drizzle	82 / 84 °F	0.35 in	10 mph SSE
Wed 7	Light drizzle	80 / 89 °F	0.04 in	10 mph SE
Tue 6	Light drizzle	81 / 87 °F	0.04 in	9 mph SE
Mon 5	Drizzle	81 / 88 °F	0.11 in	11 mph ESE
Sun 4	Drizzle	81 / 87 °F	0.06 in	16 mph ESE
Sat 3	Drizzle	81 / 87 °F	0.17 in	15 mph ESE
Fri 2	Light drizzle	83 / 88 °F	0.17 in	16 mph SE
Thu 1	Light drizzle	84 / 89 °F	0.07 in	17 mph ESE
Wed 30	Light drizzle	82 / 89 °F	0.09 in	18 mph ESE
Tue 29	Light drizzle	84 / 89 °F	0.05 in	11 mph ESE

These are the models at the start of each day (ECMWF and GFS; waves from Météo-France), not readings from a weather station: there can be differences at specific spots.

Questions about the weather in Port AntonioQuestions

What's the weather like today in Port Antonio?

Drizzle, from 77 °F to 83 °F, with a light breeze from the south-southwest (4 mph) and a 92% chance of rain.

Will it rain tomorrow in Port Antonio?

On Friday 30 the chance of rain is 49% (0.20 in): drizzle.

How warm will it be this week?

Between a low of 77 °F and a high of 86 °F; the warmest day, Saturday 31.

What's the UV index today?

It reaches 8 (very high). Avoid the midday sun; reflection off the water adds to it.

Is the pressure rising or falling?

It's 29.88 inHg and falling: +0.00 inHg over the last 24 hours.

When is the best time to visit Port Antonio?

The best time to visit Port Antonio is from February to April: highs of 82 °F to 85 °F, about 3 rainy days a month and 8 hours of sunshine a day.

What is the weather like in Port Antonio in October?

In October, Port Antonio normally sees highs of 86 °F and lows of 74 °F, with about 13 rainy days (13.11 in for the month) and 7 hours of sunshine a day. The sea is around 85 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Port Antonio?

The warmest is August, with average highs of 89 °F, and the coldest January, with lows of 71 °F. The wettest is October (13.11 in) and the driest, February.

When is hurricane season in Port Antonio?

Hurricane season: from July to October, peaking in August. In the last 30 years (1996–2025), 13 tropical cyclones passed within 93 mi of Port Antonio, about 4 every 10 years; 8 of them with hurricane-force winds (74 mph or more). The most recent: Melissa, in October 2025.

More about Port Antonio today

Weather near Port Antonio

Only places with a different forecast: spots a few miles apart share the same model cell and wouldn't add anything.

Learn more

Weather: Open-Meteo, CC BY 4.0, with the best model for each spot and lead time (NOAA HRRR and NBM in the U.S., Météo-France AROME, DWD ICON-EU, ECMWF IFS and NOAA GFS); ECMWF grid point 5.8 mi away. The comparison also uses ICON (DWD), AIFS (ECMWF) and ARPEGE (Météo-France). Outlook: ECMWF 46-day and SEAS5. Chance of rain from ensemble models (ECMWF, GEFS and NBM). UV, air quality and pollen: CAMS (Copernicus).

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 1:15 am (local time).

Spotted a mistake? Tell us · Where the weather and sea data come from