December weather - Winter 2024 - Saint Petersburg, FL

Weather in December
Frequently asked questions
Average temperature in December
Average pressure in December
Average wind speed in December
Average humidity in December
Average rainfall in December
Average rainfall days in December
Average sea temperature in December
Average daylight in December
Average sunshine in December
Average sunshine days in December
Average UV index in December
Average cloud cover in December
Average visibility in December

Beautiful clear waterfront, scenic palm trees, and a straight road to St. Petersburg in Florida

Weather in December

December in Saint Petersburg, Florida, consummates the year with the coolest conditions. While a steady decline from November's temperatures underlines the chill, daylight duration shrinks further, enhancing the winter experience. Even as sea temperatures plunge significantly, the UV index remains steady at five, ensuring good light during reduced daylight hours. With a minor rise to 1.54in, December’s rainfall surpasses the lows of the preceding months. Emphasizing the winter ambiance, a broadening cloud cover at 30%, the highest all year, makes this month uniquely overcast.

Temperature

December's beginning in Saint Petersburg signals an average high-temperature of an agreeable 71.4°F (21.9°C), barely different from November's 75.6°F (24.2°C). Saint Petersburg cools down to an average low-temperature of 59.9°F (15.5°C) throughout the month of December.

Humidity

The most humid month in Saint Petersburg is December, with an average relative humidity of 76%.

Rainfall

In Saint Petersburg, in December, it is raining for 9.1 days, with typically 1.54" (39mm) of accumulated precipitation. Throughout the year, there are 172.1 rainfall days, and 27.2" (691mm) of precipitation is accumulated.

Ocean temperature

In December, the average ocean temperature is 68.5°F (20.3°C).
Note: Most individuals do not find swimming at 68.5°F (20.3°C) to be enjoyable. As the water temperature declines below 69.8°F (21°C), maintaining control over one's breathing becomes harder.

Daylight

The month with the shortest days is December, with an average of 10h and 24min of daylight.
On the first day of the month, sunrise is at 7:04 am and sunset at 5:35 pm. On the last day of December, sunrise is at 7:21 am and sunset at 5:46 pm EST.

Sunshine

With an average of 6.6h of sunshine, December has the least sunshine of the year.

UV index

In December, the average daily maximum UV index in Saint Petersburg is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum UV index of 5 in December translates into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.

[Resources]

Frequently asked questions

What is the temperature in December in Saint Petersburg?

Saint Petersburg in December has an average high-temperature of 71.4°F (21.9°C) and an average low-temperature of 59.9°F (15.5°C). In October, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is evaluated at 87.8°F (31°C).

What is the most humid month in Saint Petersburg?

With an average relative humidity of 76%, December is the most humid month in Saint Petersburg.

What is the average humidity in December in Saint Petersburg?

In December, the average relative humidity is 76%.

How many days does it rain in December in Saint Petersburg?

In Saint Petersburg, Florida, during December, the rain falls for 9.1 days and regularly aggregates up to 1.54" (39mm) of precipitation.

What is the ocean temperature in December in Saint Petersburg?

In Saint Petersburg, the average seawater temperature in December is 68.5°F (20.3°C). For swimming, a surface water temperature of 68.5°F (20.3°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).

What is the month with the shortest days in Saint Petersburg?

December has the shortest days of the year in Saint Petersburg, Florida, with an average of 10h and 24min of daylight.

What is the average length of the day in December in Saint Petersburg?

In December, the average day length is 10h and 25min.

When is the sunrise / sunset in December in Saint Petersburg?

In December, on the first day of the month, sunrise is at 7:04 am and sunset at 5:35 pm. On the last day of the month, in Saint Petersburg, Florida, sunrise is at 7:21 am and sunset at 5:46 pm EST.

What is the month with the least sunshine in Saint Petersburg?

December has the least sunshine of the year in Saint Petersburg, with an average of 6.6h of sunshine.

How long on average sun shines in December in Saint Petersburg?

The average sunshine duration in December in Saint Petersburg is 6.6h.

What is the UV index intensity in December in Saint Petersburg?

In Saint Petersburg, Florida, the average daily maximum UV index in December is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

75.6°F 24.2°C

71.4°F 21.9°C

67.6°F 19.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.6mph 15.4km/h

9.4mph 15.1km/h

9.6mph 15.4km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

9.1

7.8

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

22.1

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Saint Petersburg, FL

Average high temperature in December: 71.4°F

The warmest month (with the highest average high temperature) is August (88.7°F).
The month with the lowest average high temperature is January (67.6°F).

Average low temperature in December: 59.9°F

The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (55.2°F).

[Resources]

Average pressure in December
Saint Petersburg, FL

Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).

[Resources]

Average wind speed in December
Saint Petersburg, FL

Average wind speed in December: 8.6mph

The windiest months (with the highest average wind speed) are January, March, October and November (8.9mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).

[Resources]

Average humidity in December
Saint Petersburg, FL

Average humidity in December: 76%

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is May (71%).

[Resources]

Average rainfall in December
Saint Petersburg, FL

Average rainfall in December: 1.54"

The wettest month (with the highest rainfall) is July (5.24").
The driest months (with the least rainfall) are February and November (0.75").

[Resources]

Average rainfall days in December
Saint Petersburg, FL

Average rainfall days in December: 9.1 days

The month with the highest number of rainy days is July (26.2 days).
The month with the least rainy days is November (7 days).

[Resources]

Average sea temperature in December
Saint Petersburg, FL

Average sea temperature in December: 68.6°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°F).

[Resources]

Average daylight in December /
Average sunshine in December
Saint Petersburg, FL

Average daylight in December: 10h and 2min

The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).

Average sunshine in December: 6h and 4min

The month with the most sunshine is May (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

[Resources]

Average sunshine days in December
Saint Petersburg, FL

Average sunshine days in December: 20 days

The month with the most sunshine days is January (22.1 days).
The month with the least sunshine days is July (3.1 days).

[Resources]

Average UV index in December
Saint Petersburg, FL

Average UV index in December: 5

The 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).

[Resources]

Average cloud cover in December
Saint Petersburg, FL

Average cloud cover in December: 30

The month with the most cloud cover is December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 21).

[Resources]

Average visibility in December
Saint Petersburg, FL

Average visibility in December: 6mi

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).

[Resources]

December weather forecast
Saint Petersburg, FL

Contents