January weather forecast
Jacksonville, FL

Share
Water geysers at the fountain of Jacksonville in Florida, USA, with the cityscape
Water geysers at the fountain of Jacksonville in Florida, USA, with the cityscape

Weather in January

The year in Jacksonville, Florida starts off with the onset of the dry, warm climate, showcasing a sense of tranquility in the weather conditions. The city marks the middle of winter in January. However, this does not imply plummeting temperatures. Compared to the subsequent month of February, January displays marginally lower temperatures with highs of 63.1°F (17.3°C) and lows of 47.8°F (8.8°C). The highlight of these wintry months roots in the clear, rainless skies, making this the optimal time for local and tourist outdoor activities.

Temperature

January proves to be the coldest month, recording an average maximum temperature of 63.1°F (17.3°C) and a minimum temperature of 47.8°F (8.8°C).

Humidity

In January, the average relative humidity is 72%.

Rainfall

January is the month with the least rainfall in Jacksonville, Florida. Rain falls for 9.9 days and accumulates 1.1" (28mm) of precipitation.

Snowfall

In Jacksonville, snow does not fall in January through November.

Ocean temperature

January and February, with an average ocean temperature of 60.4°F (15.8°C), are months with the coldest seawater in Jacksonville.
Note: For swimming, a surface water temperature of 60.4°F (15.8°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 Jacksonville, the average length of the day in January is 10h and 27min.
On the first day of January, sunrise is at 7:23 am and sunset at 5:36 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 6:02 pm EST.

Sunshine

In Jacksonville, Florida, the average sunshine in January is 6.1h.

UV index

With an average maximum UV index of 4, January is the month with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily maximum UV index of 4 in January translates into the following instructions:
Ensure safety - Imperative it is to shield skin and eyes from damage. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest in Jacksonville?

January stands out as Jacksonville's coldest month, with an average high-temperature of 63.1°F (17.3°C) and a low-temperature of 47.8°F (8.8°C).

What are January temperatures in Jacksonville?

In Jacksonville, in January, the average high-temperature is 63.1°F (17.3°C), and the average low-temperature is 47.8°F (8.8°C).

What is the average humidity in January in Jacksonville?

In Jacksonville, Florida, the average relative humidity in January is 72%.

What is the driest month in Jacksonville?

January is the month with the least rainfall in Jacksonville, Florida. Rain falls for 9.9 days and accumulates 1.1" (28mm) of precipitation.

How many days does it rain in January in Jacksonville?

In Jacksonville, Florida, in January, during 9.9 rainfall days, 1.1" (28mm) of precipitation is typically accumulated.

When it does not snow in Jacksonville?

January through November are months without snowfall.

Does it snow in Jacksonville in January?

In January, in Jacksonville, Florida, it doesn't snow. December is the latest month when it typically snows.

What months are the ocean coldest in Jacksonville?

January and February, with an average ocean temperature of 60.4°F (15.8°C), are months with the coldest seawater.

What is the ocean temperature in January in Jacksonville?

In Jacksonville, Florida, in January, the average water temperature is 60.4°F (15.8°C). Swimming in 60.4°F (15.8°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 average length of the day in January in Jacksonville?

In January, the average day length is 10h and 27min.

What time are sunrise and sunset in January in Jacksonville?

In January, on the first day of the month, sunrise is at 7:23 am and sunset at 5:36 pm. On the last day of the month, in Jacksonville, Florida, sunrise is at 7:17 am and sunset at 6:02 pm EST.

How many hours of sunshine does Jacksonville have in January?

In Jacksonville, the average sunshine duration in January is 6.1h.

What is the month with the lowest UV index in Jacksonville?

January is the month with the lowest UV index in Jacksonville, Florida, with an average maximum UV index of 4.

What is the UV index intensity in January in Jacksonville?

In January, the average daily maximum UV index in Jacksonville is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Jacksonville, FL

Average temperature in January - Jacksonville, FL
  • Average high temperature in January: 63.1°F

The warmest months (with the highest average high temperature) are July and August (91.4°F).
The month with the lowest average high temperature is January (63.1°F).

  • Average low temperature in January: 47.8°F

The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (47.8°F).

Average pressure in January
Jacksonville, FL

Average pressure in January - Jacksonville, FL
  • Average pressure in January: 30.14"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).

Average wind speed in January
Jacksonville, FL

Average wind speed in January - Jacksonville, FL
  • Average wind speed in January: 6.5mph

The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

Average humidity in January
Jacksonville, FL

Average humidity in January - Jacksonville, FL
  • Average humidity in January: 72%

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is March (69%).

Average rainfall in January
Jacksonville, FL

Average rainfall in January - Jacksonville, FL
  • Average rainfall in January: 1.1"

The wettest month (with the highest rainfall) is August (3.66").
The driest month (with the least rainfall) is January (1.1").

Average rainfall days in January
Jacksonville, FL

Average rainfall days in January - Jacksonville, FL
  • Average rainfall days in January: 9.9 days

The month with the highest number of rainy days is August (23.3 days).
The month with the least rainy days is November (9 days).

Average snowfall days in January
Jacksonville, FL

Average snowfall days in January - Jacksonville, FL
  • Average snowfall days in January: 0 days

The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

Average sea temperature in January
Jacksonville, FL

Average sea temperature in January - Jacksonville, FL
  • Average sea temperature in January: 60.5°F

The best month for swimming (with the highest average sea temperature) is August (83.5°F).
The coldest month (with the lowest average sea temperature) is February (60.4°F).

Average daylight in January /
Average sunshine in January
Jacksonville, FL

Average daylight in January / Average sunshine in January - Jacksonville, FL
  • Average daylight in January: 10h and 3min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in January: 6h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

Average sunshine days in January
Jacksonville, FL

Average sunshine days in January - Jacksonville, FL
  • Average sunshine days in January: 18.8 days

The month with the most sunshine days is January (18.8 days).
The month with the least sunshine days is August (6.3 days).

Average UV index in January
Jacksonville, FL

Average UV index in January - Jacksonville, FL
  • Average UV index in January: 4

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

Average cloud cover in January
Jacksonville, FL

Average cloud cover in January - Jacksonville, FL
  • Average cloud cover in January: 35

The month with the most cloud cover is December (Cloud cover 39).
The month with the least cloud cover is May (Cloud cover 27).

Average visibility in January
Jacksonville, FL

Average visibility in January - Jacksonville, FL
  • Average visibility in January: 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).

Jacksonville, Florida, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location