January weather forecast and climate
Longboat Key, FL

January, like December, is another pleasant winter month in Longboat Key, Florida, with average temperature ranging between max 68.5°F (20.3°C) and min 56.1°F (13.4°C).

Temperature

January is the coldest month, with an average high-temperature of 68.5°F (20.3°C) and an average low-temperature of 56.1°F (13.4°C).

Humidity

The average relative humidity in Longboat Key is 73%.

Rainfall

In Longboat Key, during 8.3 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. In Longboat Key, during the entire year, the rain falls for 183.1 days and collects up to 34.92" (887mm) of precipitation.

Ocean temperature

The month with the coldest seawater is January, with an average ocean temperature of 64°F (17.8°C).
Note: For swimming, a surface water temperature of 64°F (17.8°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

In Longboat Key, Florida, the average length of the day is 10.6h.

Sunshine

In January, the average sunshine in Longboat Key is 7.3h.

UV index

The month with the lowest UV index is January, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.

What is the coldest month in Longboat Key?

January is the coldest month, with an average high-temperature of 68.5°F (20.3°C) and an average low-temperature of 56.1°F (13.4°C).

What is the temperature in January in Longboat Key?

The average high-temperature, in January, in Longboat Key, Florida, is 68.5°F (20.3°C), while the average low-temperature is 56.1°F (13.4°C).

What is the average humidity in January in Longboat Key?

In January, the average relative humidity is 73%.

How much does it rain in Longboat Key in January?

In Longboat Key, during January, the rain falls for 8.3 days and regularly aggregates up to 1.22" (31mm) of precipitation.

When is the ocean coldest in Longboat Key?

The month with the coldest seawater is January, with an average ocean temperature of 64°F (17.8°C).

What is the ocean temperature in January in Longboat Key?

In Longboat Key, Florida, the average seawater temperature in January is 64°F (17.8°C). For most, swimming in 64°F (17.8°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

What is the average length of the day in January in Longboat Key?

The average length of the day in January in Longboat Key is 10.6h.

How many hours of sunshine does Longboat Key have in January?

In Longboat Key, Florida, the average sunshine in January is 7.3h.

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

With an average maximum UV index of 4, January is the month with the lowest UV index.

What is the UV index reading in January in Longboat Key?

In January, the average daily maximum UV index in Longboat Key, Florida, is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV radiation.
Average temperature in January - Longboat Key, FL
  • Average high temperature in January: 68.5°F

The warmest month (with the highest average high temperature) is August (88.5°F).
The month with the lowest average high temperature is January (68.5°F).

  • Average low temperature in January: 56.1°F

The month with the highest average low temperature is August (79.7°F).
The coldest month (with the lowest average low temperature) is January (56.1°F).

Average pressure in January - Longboat Key, FL
  • Average pressure in January: 30.13"

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is September (29.95").

Average wind speed in January - Longboat Key, FL
  • Average wind speed in January: 9.3mph

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).

Average humidity in January - Longboat Key, FL
  • Average humidity in January: 73%

The month with the highest relative humidity is December (76%).
Months with the lowest relative humidity are March, April and May (72%).

Average rainfall in January - Longboat Key, FL
  • Average rainfall in January: 1.22"

The wettest month (with the highest rainfall) is August (6.42").
The driest months (with the least rainfall) are February and November (1.06").

Average rainfall days in January - Longboat Key, FL
  • Average rainfall days in January: 8.3 days

The month with the highest number of rainy days is August (26.8 days).
Months with the least rainy days are January, February and November (8.3 days).

Average sea temperature in January - Longboat Key, FL
  • Average sea temperature in January: 64.1°F

The best month for swimming (with the highest average sea temperature) is August (86.7°F).
The coldest month (with the lowest average sea temperature) is January (64.1°F).

Average daylight in January / Average sunshine in January - Longboat Key, FL
  • Average daylight in January: 10.6h

The month with the longest days is June (Average daylight: 13.9h).
The month with the shortest days is December (Average daylight: 10.4h).

  • Average sunshine in January: 7.3h

The month with the most sunshine is May (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 6.5h).

Average sunshine days in January - Longboat Key, FL
  • Average sunshine days in January: 21.1 days

The month with the most sunshine days is January (21.1 days).
The month with the least sunshine days is August (2.5 days).

Average UV index in January - Longboat Key, FL
  • Average UV index in January: 4

Months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 4).

Average cloud cover in January - Longboat Key, FL
  • Average cloud cover in January: 30

Months with the most cloud cover are January and December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 22).

Average visibility in January - Longboat Key, 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).