Weather in January
Temperature
January, with an average high of 66°F (18.9°C) and a low of 46°F (7.8°C), signifies the coldest month of the year in St. Augustine.Rainfall
In St. Augustine, in January, during 8 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. Throughout the year, in St. Augustine, there are 116 rainfall days, and 50" (1270mm) of precipitation is accumulated.Ocean temperature
In January, the average ocean temperature in St. Augustine is 64.4°F (18°C).Note: The majority of people do not enjoy swimming in 64.4°F (18°C). The difficulty in controlling breathing escalates as the temperature descends from 69.8°F (21°C) to 59°F (15°C).
Daylight
In St. Augustine, the average length of the day in January is 10h and 29min.On the first day of January in St. Augustine, sunrise is at 7:20 am and sunset at 5:36 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 6:01 pm EST.
Sunshine
The average sunshine in January in St. Augustine is 7h.UV index
January and December, with an average maximum UV index of 4, are months with the lowest UV index in St. Augustine, Florida. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: In January, the average maximum UV index of 4 translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
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Average temperature in January
St. Augustine, FL
- Average high temperature in January: 66°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (66°F).
- Average low temperature in January: 46°F
The month with the highest average low temperature is August (73°F).
The coldest month (with the lowest average low temperature) is January (46°F).
Average rainfall in January
St. Augustine, FL
- Average rainfall in January: 2.7"
The wettest month (with the highest rainfall) is September (7.5").
The driest month (with the least rainfall) is November (2.3").
Average rainfall days in January
St. Augustine, FL
- Average rainfall days in January: 8 days
The months with the highest number of rainy days are July and August (15 days).
The month with the least rainy days is April (6 days).
Average sea temperature in January
St. Augustine, FL
- Average sea temperature in January: 64.3°F
The best month for swimming (with the highest average sea temperature) is August (83.8°F).
The coldest months (with the lowest average sea temperature) are January and February (64.3°F).
Average daylight in January /
Average sunshine in January
St. Augustine, FL
- Average daylight in January: 10h and 3min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in January: 7h
The months with the most sunshine are March, April, May, June, July and August (Average sunshine: 9h).
The month with the least sunshine is December (Average sunshine: 6h).
Average UV index in January
St. Augustine, FL
- Average UV index in January: 4
The months with the highest UV index are June and July (UV index 11).
The months with the lowest UV index are January and December (UV index 4).
St. Augustine, Florida, USA
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