Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall days in January
- Average sea temperature in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January is Jacksonville's coldest month, registering average high temperatures of 63.1°F (17.3°C) and lows of 47.8°F (8.8°C).Humidity
The average relative humidity in January in Jacksonville is 72%.Rainfall
January is the month with the least rainfall. Rain falls for 9.9 days and accumulates 1.1" (28mm) of precipitation.Snowfall
January through November are months without snowfall.Ocean temperature
The months with the coldest seawater are January and February, with an average ocean temperature of 60.4°F (15.8°C).Note: Swimming is not a pleasurable activity for the majority in water at 60.4°F (15.8°C). Breathing control gets harder as the water temperature dips from 69.8°F (21°C) to 59°F (15°C).
Daylight
In January, the average length of the day is 10h and 27min.On the first day of the month, sunrise is at 7:23 am and sunset at 5:36 pm. On the last day of January, sunrise is at 7:17 am and sunset at 6:02 pm EST.
Sunshine
In Jacksonville, the average sunshine in January is 6.1h.UV index
January is the month with the lowest UV index, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: A typical high UV index of 4 in January suggests the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
What is the average January temperature?
What is the average humidity in January?
What is the driest month in Jacksonville?
How many days does it rain in January?
When it does not snow?
Does it snow in January?
What months are the ocean coldest in Jacksonville?
How cold is the water in January?
What is the average length of the day in January?
When is the sunrise / sunset in January?
How long on average sun shines in January?
When is the lowest UV index?
How high is the UV index in January?
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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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
2. Allow the app to use your location