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Contents
- The climate of Port Antonio
- The best time to visit Port Antonio
- The worst time to visit Port Antonio
- Spring weather in Port Antonio
- Summer weather in Port Antonio
- Autumn weather in Port Antonio
- Winter weather in Port Antonio
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average rainfall
- Average rainfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average UV index
The climate of Port Antonio
The city of Port Antonio, beautifully nestled in Jamaica, is marked by a tropical wet and dry climate according to the Köppen climate classification. As expected from a location within the Aw zone, this locale enjoys a wide variety of weather phenomena that change throughout the year. Temperatures tend to fluctuate from a low of 18°C (64.4°F) up to highs of 31°C (87.8°F). Rainfall and the number of rainy days per month also reveal interesting patterns in this tropical location. From a moderately wet 75mm (2.95") in March up to a considerable volume of 352mm (13.86") in November, precipitation levels vary significantly. Nevertheless, with a year-round warmth and a climate that shifts from wet to dry, Port Antonio exemplifies a quintessential tropical setting.
When analyzing daylight hours, they range from 11.1 hours in December to 13.2 hours in June, showing a clear indication of the tropical latitude. Sea temperatures, on the other hand, display modest fluctuation from 26.8°C (80.2°F) to 29.8°C (85.6°F), providing agreeable conditions for water-based activities.
Notably, the UV index sustains high values throughout the year, peaking at an index of 12 from March to September. This certainly emphasises the necessity of sun protection for residents and travelers alike. Sunshine hours maintain a steady average of between 6 to 8 hours per day, reflecting the city's tropical locale.
When analyzing daylight hours, they range from 11.1 hours in December to 13.2 hours in June, showing a clear indication of the tropical latitude. Sea temperatures, on the other hand, display modest fluctuation from 26.8°C (80.2°F) to 29.8°C (85.6°F), providing agreeable conditions for water-based activities.
Notably, the UV index sustains high values throughout the year, peaking at an index of 12 from March to September. This certainly emphasises the necessity of sun protection for residents and travelers alike. Sunshine hours maintain a steady average of between 6 to 8 hours per day, reflecting the city's tropical locale.
The best time to visit Port Antonio
Looking at the overall weather patterns, the finest time to visit Port Antonio would be from January to March. These months enjoy comfortable temperatures ranging from 18°C (64.4°F) to 29°C (84.2°F), providing an enjoyable climate for outdoor activities. Rainfall during this period is relatively low, ranging from 75mm (2.95") to 185mm (7.28") with 6 to 7 rainy days per month. This reduced chance of precipitation makes sightseeing and exploration more pleasant. Moreover, sea temperatures remain inviting, hovering around 26.8°C (80.2°F) to 27.1°C (80.8°F). Tourists can also benefit from a substantial amount of daylight, around 11.2 to 12.1 hours, and ample sunshine of 7 to 8 hours per day.
The worst time to visit Port Antonio
On the contrary, the less favorable time to visit Port Antonio happens to be in the latter part of the year. Specifically, October and November present weather conditions that might challenge outdoor activities. During these months, temperatures remain relatively warm, ranging from 20°C (68°F) to 30°C (86°F). However, rainfall increases substantially, reaching up to 352mm (13.86") in November with 16 rainy days in October. This considerable amount of precipitation can hinder outdoor plans. Although sea temperatures stay warm, between 29.4°C (84.9°F) and 29°C (84.2°F), and daylight hours are consistent, the high probabilities of rain and saturated conditions might make this period less appealing for visitors.
Spring weather in Port Antonio
Spring in Port Antonio can be described as classically tropical, with temperatures ranging from 19°C (66.2°F) to 30°C (86°F). The number of rainy days during this season fall between 6 to 7, and rainfall measures from 75mm (2.95") to 148mm (5.83"). Although these months experience considerable rainfall, it does not outweigh the pleasant weather conditions. Sea temperatures gradually increase from 27.1°C (80.8°F) to 27.7°C (81.9°F). Meanwhile, daylight hours extend, reaching up to 12.6 hours per day by May with sunshine hours peaking at 8 hours per day.
Summer weather in Port Antonio
Summer months lend themselves to a somewhat predictable tropical climate. Temperatures during this period range from 22°C (71.6°F) to 31°C (87.8°F). June and July’s rain volumes exceed 200mm (7.87"), recording 12 to 13 rainy days per month. The weeks of summer sport the lengthiest days of the year, with daylight hours varying from 13 to 13.2 hours per day. Sea temperatures during these sun-drenched months vary from 28.4°C (83.1°F) to 29.6°C (85.3°F), perfect for water activities.
Autumn weather in Port Antonio
Autumn in Port Antonio tends to be markedly wet. Temperatures during this season display consistency, with lows of 22°C (71.6°F) and highs of 30°C (86°F). The number of rainy days remains high in autumn, with figures ranging from 14 to 16 days. Correspondingly, the city sees substantial levels of rainfall, notably reaching a high of 337mm (13.27") in October. However, the sea remains warm with temperatures falling between 29.8°C (85.6°F) and 29°C (84.2°F), and daylight still lasts between 12.2 hours and 11.3 hours per day.
Winter weather in Port Antonio
Winter months in Port Antonio present a slightly cooler climate, with temperatures varying from 19°C (66.2°F) to 29°C (84.2°F). Rainfall begins to decrease in these months, from 279mm (10.98") in December to 185mm (7.28") in February. Rainy days also become less frequent, seeing only 8 to 7 days in the latter winter months. Sunshine hours remain comforting at about 6 to 7 hours per day while daylight hours recede slightly from 11.3 to 11.1 hours. Sea temperatures during the winter season range from 29°C (84.2°F) to 28.2°C (82.8°F), maintaining their pleasant warmth.
Weather in January
Expect January weather in Port Antonio, Jamaica to commence with warmth. A daily high temperature revolves around 29°C (84.2°F), with nights cooling down to approximately 18°C (64.4°F). Adverse weather conditions tend to be less severe as compared to the heavy downpours that will follow in the year. Weather in January »
Weather in February
Subtle changes occur in the weather during February. Variations in temperature are minimal, but rainfall slightly reduces. The increase in daylight hours paired with consistent sunshine makes for pleasant weather. Sea temperatures, however, begin to fall, albeit marginally. Weather in February »
Weather in March
A noticeable shift happens in Port Antonio's weather in March. The decrease in rainfall and rise in sunshine hours emphasize the dryness of the season. A daily increase in sunshine and daylight hours results in extended periods to enjoy the sandy beaches. Weather in March »
Weather in April
April in Port Antonio witnesses a weather transition from dry to wet. There is an increased likelihood of rainfall amid consistent temperature levels. Enjoyment of outdoor activities sustains owing to extended daylight and stable sunshine durations. Weather in April »
Weather in May
May ushers in the wet season in Port Antonio with the annual highest rainfall of 276mm (10.87") spread over an increased number of rainy days. Despite the weather challenges, daylight and sunshine durations remain favorable for outdoor activities. Weather in May »
Weather in June
Weather in June continues to maintain rhythms similar to May. The frequency and intensity of showers slightly reduce however. Daylight hours reach their peak while sea temperatures continue to rise. Despite the bit of cloud cover introduced by rain, sunbathing remains favorable. Weather in June »
Weather in July
Patterns within the Port Antonio weather system shift in July. The increased rainfall correlates with an increase in the number of rainy days. A slight rise in temperatures offers the warmest month of the year with temperatures reaching up to 31°C (87.8°F) during the day. Weather in July »
Weather in August
The weather in August mirrors that of July. Despite persistent rainfall, there are plenty of sunshine hours. A minimal drop in sea temperatures should not deter beach enthusiasts. The UV index remains unchanged suggesting continued intensity of solar radiation. July and August are characterised by peak temperatures, with an average high of 31°C (87.8°F). Weather in August »
Weather in September
Entering into September, Port Antonio experiences significant weather transformations. Temperature variations are minimal, but rainfall begins to increase. The month endorses less sunshine hours and reduced daylight. Despite the shorter days, enjoyment of the sea can continue due to high sea temperatures. Weather in September »
Weather in October
October weather continues with the trend of increased rainfall. Heavy rainfall commences an overall wet condition in the environment. Changes in daylight and sunshine hours are minor but in favor of less sunshine. Tourists can savour the sea that maintains high temperature. Weather in October »
Weather in November
The rainy season in November reaches its peak with the annual highest rainfall, recorded at 352mm (13.86"). A decrease in sea and daylight and sunshine hours denotes transitioning into cooler months. Offsetting the downside of rains is a remarkable fall in temperature. Weather in November »
Weather in December
Port Antonio weather in December marks the commencement of the dry season again. The drastic reduction in rainfall and cooler temperatures indicate a transition to less humid conditions. Despite fewer daylight and sunshine hours, outdoor activities remain enjoyable. Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in Port Antonio?
Temperatures in Port Antonio, Jamaica, reach their minimum during January through March, November and December, recording an average high-temperature of 29°C (84.2°F).
How much does it rain in Port Antonio?
Throughout the year, in Port Antonio, Jamaica, there are 125 rainfall days, and 2639mm (103.9") of precipitation is accumulated.
When is the lowest UV index in Port Antonio?
January and December, with an average maximum UV index of 8, are months with the lowest UV index.
When is the sea coldest in Port Antonio?
February is the month with the coldest seawater, with an average sea temperature of 26.8°C (80.2°F).
What is the driest month in Port Antonio?
March is the month with the least rainfall in Port Antonio. Rain falls for 6 days and accumulates 75mm (2.95") of precipitation.
What is the month with the most sunshine in Port Antonio?
The months with the most sunshine in Port Antonio, Jamaica, are March, April and July, with an average of 8h of sunshine.
What is the month with the highest UV index in Port Antonio?
The months with the highest UV index are March through September, with an average maximum UV index of 12.
When are the longest days in Port Antonio?
The month with the longest days in Port Antonio, Jamaica, is June, with an average of 13h and 12min of daylight.
What part of the year is the hottest in Port Antonio?
July and August are identified as the warmest months in Port Antonio, Jamaica, with an average high-temperature of 31°C (87.8°F).
When is the sea warmest in Port Antonio?
With an average sea temperature of 29.8°C (85.6°F), September is the month with the warmest seawater in Port Antonio, Jamaica.
What are the months with the least sunshine in Port Antonio?
The months with the least sunshine in Port Antonio are September through November, with an average of 6h of sunshine.
What is the wettest month in Port Antonio?
November is the month with the most rainfall in Port Antonio, Jamaica. Rain falls for 11 days and accumulates 352mm (13.86") of precipitation.
What is the month with the shortest days in Port Antonio?
With an average of 11h and 6min of daylight, December has the shortest days of the year.
Is there Daylight Saving Time (DST) in Port Antonio?
Port Antonio, Jamaica, does not utilize Daylight Saving Time (DST). EST timezone is used over the entire year.
Average temperature
Port Antonio, Jamaica
The warmest months (with the highest average high temperature) are July and August (31°C).
The months with the lowest average high temperature are January, February, March, November and December (29°C).
The months with the highest average low temperature are June, July, August and September (22°C).
The coldest month (with the lowest average low temperature) is January (18°C).
Average rainfall
Port Antonio, Jamaica
- Average rainfall in January:
185mm - Average rainfall in February:
149mm - Average rainfall in March:
75mm - Average rainfall in April:
148mm - Average rainfall in May:
276mm - Average rainfall in June:
236mm
- Average rainfall in July:
185mm - Average rainfall in August:
197mm - Average rainfall in September:
220mm - Average rainfall in October:
337mm - Average rainfall in November:
352mm - Average rainfall in December:
279mm
The wettest month (with the highest rainfall) is November (352mm).
The driest month (with the least rainfall) is March (75mm).
Average rainfall days
Port Antonio, Jamaica
- Average rainfall days in January:
7 days - Average rainfall days in February:
6 days - Average rainfall days in March:
6 days - Average rainfall days in April:
7 days - Average rainfall days in May:
12 days - Average rainfall days in June:
12 days
- Average rainfall days in July:
13 days - Average rainfall days in August:
13 days - Average rainfall days in September:
14 days - Average rainfall days in October:
16 days - Average rainfall days in November:
11 days - Average rainfall days in December:
8 days
The month with the highest number of rainy days is October (16 days).
The months with the least rainy days are February and March (6 days).
Average sea temperature
Port Antonio, Jamaica
The best month for swimming (with the highest average sea temperature) is September (29.8°C).
The coldest month (with the lowest average sea temperature) is February (26.8°C).
Average daylight / Average sunshine
Port Antonio, Jamaica
- Average daylight in January:
11h and 1min - Average daylight in February:
11h and 4min - Average daylight in March:
12h and 1min - Average daylight in April:
12h and 4min - Average daylight in May:
13h and 0min - Average daylight in June:
13h and 1min
- Average daylight in July:
13h and 1min - Average daylight in August:
12h and 4min - Average daylight in September:
12h and 1min - Average daylight in October:
11h and 4min - Average daylight in November:
11h and 2min - Average daylight in December:
11h and 1min
The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).
The months with the most sunshine are March, April and July (Average sunshine: 8h).
The months with the least sunshine are September, October and November (Average sunshine: 6h).
Average UV index
Port Antonio, Jamaica
The months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The months with the lowest UV index are January and December (UV index 8).
Port Antonio, Jamaica
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