Climate and monthly weather forecast
Key Largo, FL

A clear seascape and cloudy evening sky in Key Largo, Florida
A clear seascape and cloudy evening sky in Key Largo, Florida

Weather in January

January, like December, is another pleasant winter month in Key Largo, Florida, with temperature in the range of an average high of 72.7°F (22.6°C) and an average low of 66.9°F (19.4°C). January is the coldest month, with an average high-temperature of 72.7°F (22.6°C) and an average low-temperature of 66.9°F (19.4°C). Weather in January »

Weather in February

February, the last month of the winter in Key Largo, is a moderately hot month, with an average temperature ranging between min 69.4°F (20.8°C) and max 73.6°F (23.1°C). In February, the average high-temperature is practically the same as in January - a warm 73.6°F (23.1°C). Weather in February »

Weather in March

March, the first month of the spring in Key Largo, is still a warm month, with an average temperature fluctuating between 74.5°F (23.6°C) and 70.2°F (21.2°C). In Key Largo, the average high-temperature in March is essentially the same as in February - a still warm 74.5°F (23.6°C). Weather in March »

Weather in April

April, the same as March, is another warm spring month in Key Largo, Florida, with an average temperature varying between 77.5°F (25.3°C) and 75°F (23.9°C). In April, the average high-temperature is essentially the same as in March - a still moderately hot 77.5°F (25.3°C). Weather in April »

Weather in May

The last month of the spring, May, is also a moderately hot month in Key Largo, Florida, with an average temperature ranging between min 78.1°F (25.6°C) and max 80.6°F (27°C). In Key Largo, the average high-temperature in May is almost the same as in April - a still warm 80.6°F (27°C). Weather in May »

Weather in June

The first month of the summer, June, is also a moderately hot month in Key Largo, Florida, with temperature in the range of an average high of 83.7°F (28.7°C) and an average low of 81.1°F (27.3°C). In June, the average high-temperature is practically the same as in May - a still warm 83.7°F (28.7°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Key Largo, Florida, with an average temperature ranging between min 82.4°F (28°C) and max 84.7°F (29.3°C). In Key Largo, the average high-temperature in July is essentially the same as in June - a still warm 84.7°F (29.3°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Key Largo, Florida, with an average temperature fluctuating between 85.5°F (29.7°C) and 82.9°F (28.3°C). With an average high-temperature of 85.5°F (29.7°C) and an average low-temperature of 82.9°F (28.3°C), August is the warmest month. The average heat index in August is evaluated at a very hot 95°F (35°C). Weather in August »

Weather in September

September, the first month of the autumn in Key Largo, is still a warm month, with an average temperature fluctuating between 84.6°F (29.2°C) and 81.7°F (27.6°C). In September, the average high-temperature is almost the same as in August - a still moderately hot 84.6°F (29.2°C). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Key Largo, Florida, with temperature in the range of an average high of 82.2°F (27.9°C) and an average low of 78.8°F (26°C). In October, the average high-temperature is almost the same as in September - a still warm 82.2°F (27.9°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a moderately hot month in Key Largo, Florida, with temperature in the range of an average low of 74.1°F (23.4°C) and an average high of 77.7°F (25.4°C). In Key Largo, the average high-temperature in November is practically the same as in October - a still moderately hot 77.7°F (25.4°C). Weather in November »

Weather in December

December, the first month of the winter in Key Largo, is still a warm month, with an average temperature varying between 75.2°F (24°C) and 71.1°F (21.7°C). In December, the average high-temperature is practically the same as in November - a still warm 75.2°F (24°C). Weather in December »
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FAQ

What is the coldest month in Key Largo?

With an average high-temperature of 72.7°F (22.6°C) and an average low-temperature of 66.9°F (19.4°C), January is the coldest month in Key Largo.

How much does it rain in Key Largo?

Throughout the year, there are 190.1 rainfall days, and 27.05" (687mm) of precipitation is accumulated.

What is the month with the lowest UV index in Key Largo?

With an average maximum UV index of 5, January is the month with the lowest UV index in Key Largo.

What are the most humid months in Key Largo?

The months with the highest humidity are February, June and December, with an average relative humidity of 76%.

When is the ocean coldest in Key Largo?

The month with the coldest seawater is February, with an average ocean temperature of 73.9°F (23.3°C).

What is the least humid month in Key Largo?

March is the least humid month, with an average relative humidity of 73%.

What is the driest month in Key Largo?

March is the month with the least rainfall in Key Largo, Florida. Rain falls for 11.4 days and accumulates 0.59" (15mm) of precipitation.

When is Daylight Saving Time (DST) in Key Largo?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from EDT to EST.

What are the months with the highest UV index in Key Largo?

The months with the highest UV index in Key Largo, Florida, are April through October, with an average maximum UV index of 7.

When are the longest days in Key Largo?

With an average of 13h and 40min of daylight, June has the longest days of the year.

What month has the most sunshine in Key Largo?

July has the most sunshine of the year, with an average of 11h of sunshine.

What is the warmest month in Key Largo?

The warmest month is August, with an average high-temperature of 85.5°F (29.7°C) and an average low-temperature of 82.9°F (28.3°C).

What is the wettest month in Key Largo?

August is the month with the most rainfall. Rain falls for 20.9 days and accumulates 4.33" (110mm) of precipitation.

When is the ocean warmest in Key Largo?

With an average ocean temperature of 86.5°F (30.3°C), August is the month with the warmest seawater in Key Largo, Florida.

What is the month with the shortest days in Key Largo?

With an average of 10h and 37min of daylight, December has the shortest days of the year.

What is the month with the least sunshine in Key Largo?

The month with the least sunshine in Key Largo, Florida, is December, with an average of 6.4h of sunshine.

Average temperature
Key Largo, FL

Average temperature - Key Largo, FL

The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is January (72.7°F).

The month with the highest average low temperature is August (82.9°F).
The coldest month (with the lowest average low temperature) is January (66.9°F).

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Average pressure
Key Largo, FL

Average pressure - Key Largo, FL

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are September and October (29.94"Hg).

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Average wind speed
Key Largo, FL

Average wind speed - Key Largo, FL

The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is July (8.9mph).

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Average humidity
Key Largo, FL

Average humidity - Key Largo, FL

The months with the highest relative humidity are February, June and December (76%).
The month with the lowest relative humidity is March (73%).

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Average rainfall
Key Largo, FL

Average rainfall - Key Largo, FL

The wettest month (with the highest rainfall) is August (4.33").
The driest month (with the least rainfall) is March (0.59").

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Average rainfall days
Key Largo, FL

Average rainfall days - Key Largo, FL

The month with the highest number of rainy days is September (22.9 days).
The month with the least rainy days is February (9.7 days).

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Average sea temperature
Key Largo, FL

Average sea temperature - Key Largo, FL

The best month for swimming (with the highest average sea temperature) is August (86.5°F).
The coldest month (with the lowest average sea temperature) is February (74°F).

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Average daylight / Average sunshine
Key Largo, FL

Average daylight / Average sunshine - Key Largo, FL

The month with the longest days is June (Average daylight: 13h and 40min).
The month with the shortest days is December (Average daylight: 10h and 37min).

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

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Average sunshine days
Key Largo, FL

Average sunshine days - Key Largo, FL

The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is September (5.2 days).

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Average UV index
Key Largo, FL

Average UV index - Key Largo, FL

The months with the highest UV index are April, May, June, July, August, September and October (UV index 7).
The month with the lowest UV index is January (UV index 5).

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Average visibility
Key Largo, FL

Average visibility - Key Largo, FL

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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