Monthly weather forecast and climate
Portmore, Jamaica

Weather in January

January, the same as December, is another warm winter month in Portmore, Jamaica, with average temperature fluctuating between 21.7°C (71.1°F) and 27.3°C (81.1°F). The coldest months are January and February, with an average high-temperature of 27.3°C (81.1°F). In January, the average heat index is evaluated at a tropical 30.4°C (86.7°F). Weather in January »

Weather in February

February, the last month of the winter, in Portmore, is also a moderately hot month, with temperature in the range of an average high of 27.3°C (81.1°F) and an average low of 21.6°C (70.9°F). The coldest months are January and February, with an average high-temperature of 27.3°C (81.1°F). In February, the average heat index is evaluated at a tropical 30.3°C (86.5°F). Weather in February »

Weather in March

The first month of the spring, March, is still a warm month in Portmore, Jamaica, with temperature in the range of an average high of 27.7°C (81.9°F) and an average low of 21.7°C (71.1°F). In Portmore, Jamaica, the average high-temperature in March is practically the same as in February - a still moderately hot 27.7°C (81.9°F). Weather in March »

Weather in April

April, the same as March, is another warm spring month in Portmore, Jamaica, with average temperature varying between 28.7°C (83.7°F) and 22.6°C (72.7°F). In Portmore, the average high-temperature in April is essentially the same as in March - a still warm 28.7°C (83.7°F). Weather in April »

Weather in May

May, the last month of the spring, in Portmore, is also a moderately hot month, with average temperature ranging between max 28.7°C (83.7°F) and min 23.2°C (73.8°F). In May, the average high-temperature remains the same as in April - a still moderately hot 28.7°C (83.7°F). Weather in May »

Weather in June

The first month of the summer, June, is still a warm month in Portmore, Jamaica, with average temperature varying between 29.3°C (84.7°F) and 24°C (75.2°F). In June, the average high-temperature is almost the same as in May - a still warm 29.3°C (84.7°F). Weather in June »

Weather in July

July in Portmore, Jamaica, is a tropical summer month, with temperature in the range of an average high of 30°C (86°F) and an average low of 24.3°C (75.7°F). In July, the average high-temperature is essentially the same as in June - a hot 30°C (86°F). Weather in July »

Weather in August

August, the last month of the summer, in Portmore, is another hot month, with average temperature ranging between max 30.3°C (86.5°F) and min 24.2°C (75.6°F). With an average high-temperature of 30.3°C (86.5°F) and an average low-temperature of 24.2°C (75.6°F), August is the warmest month. The average heat index in August is estimated at a sweltering 38.3°C (100.9°F). Weather in August »

Weather in September

September, the first month of the autumn, in Portmore, is still a tropical month, with average temperature varying between 24.1°C (75.4°F) and 30.1°C (86.2°F). In Portmore, the average high-temperature is essentially the same as in August - a still hot 30.1°C (86.2°F). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Portmore, Jamaica, with average temperature ranging between max 29.2°C (84.6°F) and min 24°C (75.2°F). In October, the average high-temperature is almost the same as in September - a moderately hot 29.2°C (84.6°F). Weather in October »

Weather in November

The last month of the autumn, November, is another warm month in Portmore, Jamaica, with average temperature ranging between max 28.6°C (83.5°F) and min 23.4°C (74.1°F). In Portmore, Jamaica, the average high-temperature is relatively the same as in October - a still warm 28.6°C (83.5°F). Weather in November »

Weather in December

December, the first month of the winter, in Portmore, is also a moderately hot month, with average temperature varying between 27.8°C (82°F) and 22.4°C (72.3°F). In Portmore, the average high-temperature in December is almost the same as in November - a still warm 27.8°C (82°F). Weather in December »
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FAQ

What is the coldest month in Portmore?

The coldest months in Portmore, Jamaica, are January and February, with an average high-temperature of 27.3°C (81.1°F).

How many days does it rain in Portmore?

Throughout the year, there are 310.9 rainfall days, and 1286mm (50.63") of precipitation is accumulated.

What are the months with the lowest UV index in Portmore?

January through May, November and December, with an average maximum UV index of 6, are months with the lowest UV index.

What is the driest month in Portmore?

The month with the least rainfall in Portmore, Jamaica, is February when the rain falls for 22.1 days and typically collects 44mm (1.73") of precipitation.

When is the sea coldest in Portmore?

With an average sea temperature of 26.9°C (80.4°F), February is the month with the coldest seawater in Portmore.

What is the least humid month in Portmore?

With an average relative humidity of 78%, March is the least humid month.

When are the longest days in Portmore?

The month with the longest days is June, with an average of 13.2h of daylight.

What are the months with the highest UV index in Portmore?

Months with the highest UV index in Portmore, Jamaica, are June through October, with an average maximum UV index of 7.

What is the warmest month in Portmore?

The warmest month in Portmore is August, with an average high-temperature of 30.3°C (86.5°F) and an average low-temperature of 24.2°C (75.6°F).

What are the months with the most sunshine in Portmore?

Months with the most sunshine in Portmore, Jamaica, are August and September, with an average of 10.8h of sunshine.

What is the month with the warmest sea water in Portmore?

The month with the warmest seawater in Portmore is September, with an average sea temperature of 29.5°C (85.1°F).

What is the most humid month in Portmore?

The most humid month in Portmore, Jamaica, is October, with an average relative humidity of 82%.

What is the wettest month in Portmore?

October is the month with the most rainfall in Portmore. Rain falls for 28.7 days and accumulates 184mm (7.24") of precipitation.

What is the month with the shortest days in Portmore?

December has the shortest days of the year, with an average of 11.1h of daylight.

What is the month with the least sunshine in Portmore?

December has the least sunshine of the year, with an average of 6.5h of sunshine.

Average temperature
Portmore, Jamaica

Average temperature - Portmore, Jamaica

The warmest month (with the highest average high temperature) is August (30.3°C).
Months with the lowest average high temperature are January and February (27.3°C).

The month with the highest average low temperature is July (24.3°C).
The coldest month (with the lowest average low temperature) is February (21.6°C).

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Average pressure
Portmore, Jamaica

Average pressure - Portmore, Jamaica

The month with the highest atmospheric pressure is January (1015.5mbar).
The month with the lowest atmospheric pressure is October (1011.5mbar).

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Average wind speed
Portmore, Jamaica

Average wind speed - Portmore, Jamaica

The windiest month (with the highest average wind speed) is June (12.8km/h).
The calmest month (with the lowest average wind speed) is November (8.6km/h).

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Average humidity
Portmore, Jamaica

Average humidity - Portmore, Jamaica

The month with the highest relative humidity is October (82%).
The month with the lowest relative humidity is March (78%).

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Average rainfall
Portmore, Jamaica

Average rainfall - Portmore, Jamaica

The wettest month (with the highest rainfall) is October (184mm).
The driest month (with the least rainfall) is February (44mm).

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Average rainfall days
Portmore, Jamaica

Average rainfall days - Portmore, Jamaica

The month with the highest number of rainy days is October (28.7 days).
The month with the least rainy days is February (22.1 days).

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Average sea temperature
Portmore, Jamaica

Average sea temperature - Portmore, Jamaica

The best month for swimming (with the highest average sea temperature) is September (29.5°C).
The coldest month (with the lowest average sea temperature) is February (26.9°C).

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Average daylight / Average sunshine
Portmore, Jamaica

Average daylight / Average sunshine - Portmore, Jamaica

The month with the longest days is June (Average daylight: 13.2h).
The month with the shortest days is December (Average daylight: 11.1h).

Months with the most sunshine are August and September (Average sunshine: 10.8h).
The month with the least sunshine is December (Average sunshine: 6.5h).

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Average sunshine days
Portmore, Jamaica

Average sunshine days - Portmore, Jamaica

The month with the most sunshine days is January (3.4 days).
The month with the least sunshine days is August (0.3 days).

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Average UV index
Portmore, Jamaica

Average UV index - Portmore, Jamaica

Months with the highest UV index are June, July, August, September and October (UV index 7).
Months with the lowest UV index are January, February, March, April, May, November and December (UV index 6).

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Average visibility
Portmore, Jamaica

Average visibility - Portmore, Jamaica

Months with the highest visibility are January, February, March, April, June, July, November and December (10km).
Months with the lowest visibility are May, August, September and October (9km).

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