December weather forecast
Dunedin, FL

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Weather in December

The first month of the winter, December, is also an agreeable month in Dunedin, Florida, with an average temperature varying between 70.2°F (21.2°C) and 59.5°F (15.3°C).

Temperature

The average high-temperature in December, at an agreeable 70.2°F (21.2°C), reveals a modest deviation from November's 74.1°F (23.4°C). Dunedin's temperature in December lowers to a consistent average of 59.5°F (15.3°C) during the nights.

Humidity

December is the most humid month, with an average relative humidity of 77%.

Rainfall

In December, the rain falls for 9 days. Throughout December, 1.77" (45mm) of precipitation is accumulated. Throughout the year, there are 168.5 rainfall days, and 27.4" (696mm) of precipitation is accumulated.

Ocean temperature

In Dunedin, Florida, in December, the average water temperature is 65.1°F (18.4°C).
Note: The majority of individuals find swimming in 65.1°F (18.4°C) to be unenjoyable. The difficulty in controlling breathing rises as the temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

December has the shortest days of the year, with an average of 10h and 24min of daylight.
On the first day of December, sunrise is at 7:05 am and sunset at 5:35 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:46 pm EST.

Sunshine

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

UV index

In December, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In December, the average maximum UV index of 5 translates into the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Updated: Aug 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in December?

The high-temperature during December is 70.2°F (21.2°C) and the low-temperature is 59.5°F (15.3°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in October is computed to be 86°F (30°C).

What is the most humid month?

December is the most humid month, with an average relative humidity of 77%.

What is the average humidity in December?

The average relative humidity in December is 77%.

How many days does it rain in December?

In December, the rain falls for 9 days. Throughout December, 1.77" (45mm) of precipitation is accumulated.

How cold is the water in December?

In Dunedin, in December, the average water temperature is 65.1°F (18.4°C). Swimming in 65.1°F (18.4°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the month with the shortest days?

The month with the shortest days is December, with an average of 10h and 24min of daylight.

What is the average length of the day in December?

In Dunedin, the average day length in December is 10h and 24min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:05 am and sunset at 5:35 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:46 pm EST.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 6.5h of sunshine.

How many hours of sunshine does Dunedin have in December?

In Dunedin, the average sunshine duration in December is 6.5h.

What is the UV index intensity in December?

In December, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Dunedin, FL

Average temperature in December - Dunedin, FL
  • Average high temperature in December: 70.2°F

The warmest month (with the highest average high temperature) is August (88°F).
The month with the lowest average high temperature is January (65.7°F).

  • Average low temperature in December: 59.5°F

The month with the highest average low temperature is August (80.4°F).
The coldest month (with the lowest average low temperature) is January (55°F).

Average pressure in December
Dunedin, FL

Average pressure in December - Dunedin, FL
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).

Average wind speed in December
Dunedin, FL

Average wind speed in December - Dunedin, FL
  • Average wind speed in December: 8.8mph

The windiest months (with the highest average wind speed) are January and March (9.3mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).

Average humidity in December
Dunedin, FL

Average humidity in December - Dunedin, FL
  • Average humidity in December: 77%

The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are May and October (72%).

Average rainfall in December
Dunedin, FL

Average rainfall in December - Dunedin, FL
  • Average rainfall in December: 1.77"

The wettest month (with the highest rainfall) is August (5.16").
The driest month (with the least rainfall) is March (0.79").

Average rainfall days in December
Dunedin, FL

Average rainfall days in December - Dunedin, FL
  • Average rainfall days in December: 9 days

The month with the highest number of rainy days is July (25.6 days).
The month with the least rainy days is November (7.6 days).

Average sea temperature in December
Dunedin, FL

Average sea temperature in December - Dunedin, FL
  • Average sea temperature in December: 65.1°F

The best month for swimming (with the highest average sea temperature) is August (86.6°F).
The coldest month (with the lowest average sea temperature) is January (61.1°F).

Average daylight in December /
Average sunshine in December
Dunedin, FL

Average daylight in December / Average sunshine in December - Dunedin, 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 3min

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 30min).

Average sunshine days in December
Dunedin, FL

Average sunshine days in December - Dunedin, FL
  • Average sunshine days in December: 20.2 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (3.6 days).

Average UV index in December
Dunedin, FL

Average UV index in December - Dunedin, 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).

Average cloud cover in December
Dunedin, FL

Average cloud cover in December - Dunedin, FL
  • Average cloud cover in December: 30

The months with the most cloud cover are January and December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 20).

Average visibility in December
Dunedin, FL

Average visibility in December - Dunedin, 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).

Dunedin, Florida, USA

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