January weather forecast and climate
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 average temperature ranging between min 66.9°F (19.4°C) and max 72.7°F (22.6°C).

Temperature

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.

Humidity

In Key Largo, the average relative humidity is 75%.

Rainfall

In January, the rain falls for 10.7 days. Throughout January, 0.75" (19mm) of precipitation is accumulated. In Key Largo, during the entire year, the rain falls for 190.1 days and collects up to 27.05" (687mm) of precipitation.

Ocean temperature

In Key Largo, the average water temperature is 74.1°F (23.4°C).
Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 74.1°F (23.4°C) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 77°F (25°C) to 82.4°F (28°C).)

Daylight

In Key Largo, the average length of the day in January is 10.8h.

Sunshine

In Key Largo, Florida, the average sunshine is 6.7h.

UV index

The month with the lowest UV index is January, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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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, Florida.

What is the temperature in January in Key Largo?

The average high-temperature, in January, in Key Largo, Florida, is 72.7°F (22.6°C), while the average low-temperature is 66.9°F (19.4°C).

What is the average humidity in January in Key Largo?

The average relative humidity in January in Key Largo is 75%.

How many days does it rain in January in Key Largo?

In Key Largo, during January, the rain falls for 10.7 days and regularly aggregates up to 0.75" (19mm) of precipitation.

How warm is the water in January in Key Largo?

In Key Largo, in January, the average water temperature is 74.1°F (23.4°C). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 74.1°F (23.4°C) water may be enjoyable.

How many hours of daylight does Key Largo have in January?

The average length of the day in January in Key Largo, Florida, is 10.8h.

How long on average sun shines in January in Key Largo?

In January, the average sunshine is 6.7h.

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

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

What is the UV index intensity in January in Key Largo?

The average daily maximum UV index in January is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in January
Key Largo, FL

Average temperature in January - Key Largo, FL
  • Average high temperature in January: 72.7°F

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).

  • Average low temperature in January: 66.9°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 in January
Key Largo, FL

Average pressure in January - Key Largo, FL
  • Average pressure in January: 30.1"

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

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Average wind speed in January
Key Largo, FL

Average wind speed in January - Key Largo, FL
  • Average wind speed in January: 12.9mph

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 in January
Key Largo, FL

Average humidity in January - Key Largo, FL
  • Average humidity in January: 75%

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 in January
Key Largo, FL

Average rainfall in January - Key Largo, FL
  • Average rainfall in January: 0.75"

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 in January
Key Largo, FL

Average rainfall days in January - Key Largo, FL
  • Average rainfall days in January: 10.7 days

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 in January
Key Largo, FL

Average sea temperature in January - Key Largo, FL
  • Average sea temperature in January: 74.2°F

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 in January /
Average sunshine in January
Key Largo, FL

Average daylight in January / Average sunshine in January - Key Largo, FL
  • Average daylight in January: 10.8h

The month with the longest days is June (Average daylight: 13.7h).
The month with the shortest days is December (Average daylight: 10.6h).

  • Average sunshine in January: 6.7h

The month with the most sunshine is July (Average sunshine: 11h).
The month with the least sunshine is December (Average sunshine: 6.4h).

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Average sunshine days in January
Key Largo, FL

Average sunshine days in January - Key Largo, FL
  • Average sunshine days in January: 17.3 days

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 in January
Key Largo, FL

Average UV index in January - Key Largo, FL
  • Average UV index in January: 5

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 cloud cover in January
Key Largo, FL

Average cloud cover in January - Key Largo, FL
  • Average cloud cover in January: 34

The month with the most cloud cover is October (Cloud cover 35).
The month with the least cloud cover is April (Cloud cover 26).

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Average visibility in January
Key Largo, FL

Average visibility in January - Key Largo, FL
  • Average visibility in January: 6mi

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

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