Port Antonio in June: Weather, Sea Temperature, Rain Days and Things to Do

JAMAICA · PORT ANTONIO IN JUNE · 18.18° N

Port Antonio in June is warm by day and by night, green from the rain, and ringed by a sea that averages 84.8°F. The town sits at the wet north-eastern end of Jamaica, and an average June brings measurable rain on 13 days. The month suits travelers who are happy to keep a rain plan in their pocket.

Behind the harbor rise the Blue and John Crow Mountains, which became Jamaica’s first UNESCO World Heritage site in 2015. Closer in, the Titchfield Peninsula holds the oldest settlement of Port Antonio. June adds long light to both, with about 13 hours 15 minutes of daylight on the 15th.

On this page

• Port Antonio weather in June84.1°F highs and 13 rain days
• Can you swim in Port Antonio in June?Sea at 84.8°F
• Hotel prices and booking for JuneRefundable rates, taxes and the room that cools
• Things to do in Port Antonio in JuneTitchfield Peninsula, Folly Point and Moore Town
• Two days in Port AntonioA plan built on the 5:28 a.m. sunrise
• June, May or July in Port Antonio?How the three months compare
• Is June a good time to visit?Who should go and who should wait

Every figure here for air and rain comes from one grid cell centered on 18.18° N over Port Antonio, at the wet north-eastern end of the island. That corner is the rainiest part of Jamaica, so read these numbers as Port Antonio’s and not as the whole island’s. Getting there starts with flights from the US and airport transfers.

Port Antonio weather in June: average highs, lows and rain days

The normals below and above come from ERA5, the ECMWF model reanalysis served by Open-Meteo, averaged over 1991-2020 for a grid cell over Port Antonio. ERA5 is a model estimate for a square of territory, and it does not always agree with a thermometer at a weather station. For June it gives an average high of 84.1°F (28.9°C), an average low of 76.9°F (24.9°C) and 5.01 inches of precipitation across the month.

An average June brings 13.0 days with at least 0.10 inch of rain, so measurable rain falls on about three days in seven. Only 0.6 day reaches an inch or more, about three genuine soakers every five Junes. Most wet days still leave room for a swim and a walk: carry a shell, keep one indoor stop in reserve, and don’t write off a day at the first cloud.

Between the 84.1°F afternoon and the 76.9°F night sits a gap of just 7.2°F, so a sweater can stay home. Pack breathable cotton or linen, a light rain jacket that dries fast, sandals that tolerate puddles, and one long-sleeved layer for mosquitoes at dusk and for air-conditioned rooms. Our Jamaica packing list covers the rest.

On June 15 the sun rises at 5:28 a.m. and sets at 6:44 p.m. local time, about 13 hours 15 minutes of daylight. Usable light arrives before six in the morning, the coolest part of the day for walking, and dinner starts in the dark around seven.

Port Antonio sea temperature in June: can you swim?

The Open-Meteo Marine API puts the sea surface off Port Antonio at 84.8°F (29.3°C) in June, averaged over 2015-2024. That figure is the mean of daily maxima, the warmest reading of each day. It runs a shade warmer than a 24-hour average, and other sea tables may print a slightly lower June number.

For a swimmer, 84.8°F means water 0.7°F warmer than the average afternoon high and 7.9°F warmer than the average night. Expect no cold shock on entry. A long snorkel or an evening dip stays comfortable without a wetsuit.

We could not read a wind or swell record for Port Antonio in June, so we give no wave height and no count of flat days. On a breezy afternoon, check the local marine forecast and ask at the beach before going in. June also falls inside hurricane season, a booking question covered under crowds and prices.

How busy is Port Antonio in June? Crowds and prices

We found no occupancy series and no monthly room-rate data for Port Antonio, so we rank no month busy, quiet, cheap or expensive. Jamaica’s season calendar lives in our best time to visit Jamaica guide, and daily budgets sit in what a Jamaica trip costs.

Without a price series we cannot say how many weeks ahead to book June. The dated fact that shapes the booking is the opening of the Atlantic hurricane season on June 1, detailed in our hurricane season guide. Choose a refundable rate or a flexible change policy, match your flights to that flexibility, and read our after-Hurricane Melissa update before paying a deposit.

We could not verify a lodging tax or guest levy for Port Antonio stays, so we give no percentage and no per-night amount. Ask the hotel whether its quoted June rate includes taxes and service charges before you confirm.

Nights average 76.9°F in June, and extra money spent on the room changes how you sleep through them. A reliable air conditioner, or at least a strong ceiling fan and screened windows, is the upgrade to pay for. A sea view or a bigger suite adds pleasure without touching the heat, so spend there only after the cooling is settled. Our where to stay in Jamaica guide compares the regions.

Things to do in Port Antonio in June

Long light and warm water let one June day hold an early heritage walk, a long midday swim and an inland drive, all before the 6:44 p.m. sunset. May’s sea runs cooler at 84.4°F, and July sits a month deeper into hurricane season.

Start on the Titchfield Peninsula, the first place in the area the English settled, where Fort George stands and DeMontevin Lodge mixes Victorian styles. In town, the Port Antonio Court House went up in 1895, and Folly Point Lighthouse dates from 1888. Inland, Moore Town is governed by a Colonel, and UNESCO inscribed its Maroon heritage in 2008. Beyond it rise the Blue and John Crow Mountains, 26,251.6 hectares from 850 to 2,256 meters. Our sources publish no opening hours, admission fees or Rio Grande raft rates, so confirm those locally.

An average coastal high of 84.1°F sets the timing. Walk the peninsula and the Court House before ten, and use the mountains, climbing past 2,000 meters, for cooler air around midday. The 13 rain days weigh most inland, where trails and dirt roads turn slick after a shower. Keep the Moore Town trip for a dry morning.

We could not verify whether any Port Antonio site charges admission, so we promise nothing free. The Titchfield Peninsula’s streets are public town streets, and the Court House, DeMontevin Lodge and Christ Church can all be seen from outside at no cost.

Port Antonio in June: a two-day itinerary

Day one: reach the Titchfield Peninsula by 6:30 a.m., an hour after the 5:28 sunrise, for Fort George and DeMontevin Lodge before the heat builds toward 84.1°F. Walk to the 1895 Court House mid-morning, then give the hot middle of the day to the 84.8°F sea and a long lunch in the shade. Around 5 p.m., head out to Folly Point Lighthouse and stay for the last light before the 6:44 p.m. sunset.

Day two goes inland: leave early for Moore Town and the Blue and John Crow Mountains, and aim to be back on the coast by early afternoon. If the morning opens wet, swap the mountains for Orange Bay Railway Station, west of town, with its Jamaica Georgian features, then the great-house ruins at Seaman’s Valley. Move Moore Town to the next dry day. Our getting-around guide covers drivers and routes.

Port Antonio in June vs May and July

Highs climb from 83.1°F in May to 84.1°F in June and 84.9°F in July, and lows from 75.3°F to 76.9°F to 77.2°F. Rain drops over the same stretch, from 5.99 inches to 5.01 to 4.13, with wet days falling from 13.3 to 13.0 to 11.4. The sea, per the Open-Meteo Marine API, warms from 84.4°F to 84.8°F to 85.7°F.

Shifting four weeks later to July buys 0.88 inch less rain, 1.6 fewer wet days and a sea 0.9°F warmer, at the cost of highs 0.8°F hotter and a trip further into hurricane season. Shifting four weeks earlier to May gives highs 1.0°F cooler and nights 1.6°F cooler, and a stay that ends by May 31 finishes before the June 1 start of hurricane season. May adds 0.98 inch of rain and a sea 0.4°F cooler. Read the details in Port Antonio in May and Port Antonio in July.

Is June a good time to visit Port Antonio?

Yes, for swimmers, heritage walkers and anyone who likes warm evenings: an 84.8°F sea and light from 5:28 a.m. to 6:44 p.m. carry the trip. No, for travelers who need a bone-dry week or who plan most days on mountain trails, since measurable rain falls on about three days in seven.

If rain is the deal-breaker, pick July, with the fewest wet days of the three at 11.4, the least rain at 4.13 inches and the warmest sea. If hurricane season is the worry, pick May, which sits entirely before the June 1 start, and accept its 5.99 inches. Our best time to visit Jamaica guide weighs the rest of the year.

June is the middle month of the three, nearly an inch drier than May and 0.8°F cooler in the afternoon than July.

The last word

Book the room that cools, leave one day unassigned for the rain, and swim the gaps in 84.8°F water. Before you leave town, find Christ Church, the Portland Parish Church, standing on land indentured on 3 September 1836, and walk out to Folly Point, where the 1888 tower was built of masonry and made fireproof.

Sources & data for this guide

• June, May and July air normals and precipitation, 1991-2020 · Open-Meteo / ECMWF ERA5, grid cell 18.1789N 76.4522W · model reanalysis, not a weather-station reading · checked Sep 24, 2026
• Rain days at 0.10 inch and 1 inch or more · Open-Meteo / ECMWF ERA5, same cell and period · checked Sep 24, 2026
• Sea surface temperature, mean of daily maxima 2015-2024 · Open-Meteo Marine API · checked Sep 24, 2026
• Daylight, sunrise and sunset on June 15 · sunrise-sunset.org, converted from UTC to local time (UTC-5) · checked Sep 24, 2026
• Titchfield Peninsula, Fort George, DeMontevin Lodge, Court House, Folly Point Lighthouse, Christ Church, Maroon settlements, Orange Bay and Seaman’s Valley · Jamaica National Heritage Trust, Portland Heritage Sites · checked Sep 24, 2026
• Blue and John Crow Mountains and Moore Town Maroon heritage · UNESCO World Heritage Centre, property 1356 · checked Sep 24, 2026
• What we could not verify: opening hours, admission fees, Rio Grande raft rates, wind and swell data, occupancy or room-rate series, and a lodging-tax rate. Confirm with operators and your hotel when you book.

To plan your stay

• Port Antonio: When to Go, When to Swim and Which Month to Avoid
• Port Antonio in May: Weather, Sea Temperature, Rain Days and Things to Do
• Port Antonio in July: Weather, Sea Temperature, Rain Days and Things to Do
• Port Antonio in April: Weather, Sea Temperature and Rain Days

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• Kingston, Jamaica: The Bob Marley Museum, Devon House and Trench Town
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