January weather forecast
St. Augustine, FL

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Palm trees and colorful houses in front of water fountains in a popular town square in St. Augustine, Florida
Palm trees and colorful houses in front of water fountains in a popular town square in St. Augustine, Florida

Weather in January

Beginning the year, St. Augustine's weather breathes fresh optimism with mild temperatures and a moderate share of rainfall. It becomes the launching point with clear sunny days, creating a refreshing contrast to the wintry landscapes elsewhere in the United States. Observers may note a subtle increase in average rainfall amounting to 2.7" (69mm) spanning over 8 days. Something that sets it apart is the agreeable sea temperature enticing the brave for a chilly dip. This January ambiance ushers in new beginnings with pleasing weather patterns.

Temperature

The coldest month in St. Augustine is January, with an average high-temperature of 66°F (18.9°C) and an average low-temperature of 46°F (7.8°C).

Rainfall

In St. Augustine, Florida, in January, it is raining for 8 days, with typically 2.72" (69mm) of accumulated precipitation. In St. Augustine, during the entire year, the rain falls for 116 days and collects up to 50" (1270mm) of precipitation.

Ocean temperature

In January, the average ocean temperature in St. Augustine is 64.4°F (18°C).
Note: Swimming in 64.4°F (18°C) does not offer a pleasant experience for most individuals. The act of controlling one's breathing becomes progressively difficult as the water temperature goes under 69.8°F (21°C).

Daylight

The average length of the day in January in St. Augustine, Florida, is 10h and 29min.
On the first day of the month, sunrise is at 7:20 am and sunset at 5:36 pm. On the last day of January, in St. Augustine, Florida, sunrise is at 7:15 am and sunset at 6:01 pm EST.

Sunshine

In January, the average sunshine in St. Augustine is 7h.

UV index

The months with the lowest UV index in St. Augustine, Florida, are January and December, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 4 in January converts into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

What is the coldest month in St. Augustine?

January, noted for its average high-temperature of 66°F (18.9°C) and an average low-temperature of 46°F (7.8°C), is considered the coldest month.

What are January temperatures in St. Augustine?

The high-temperature during January is 66°F (18.9°C) and the low-temperature is 46°F (7.8°C).

How much does it rain in St. Augustine in January?

In St. Augustine, during January, the rain falls for 8 days and regularly aggregates up to 2.72" (69mm) of precipitation.

What is the ocean temperature in January in St. Augustine?

In St. Augustine, in January, the average water temperature is 64.4°F (18°C). Swimming in 64.4°F (18°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 St. Augustine?

The average day length in January is 10h and 29min.

When are sunrise and sunset in January in St. Augustine?

On the first day of January in St. Augustine, Florida, 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.

How many hours of sunshine does St. Augustine have in January?

In St. Augustine, the average sunshine duration in January is 7h.

When is the lowest UV index in St. Augustine?

January and December, with an average maximum UV index of 4, are months with the lowest UV index.

What is the UV index intensity in January in St. Augustine?

In St. Augustine, the average daily maximum UV index in January is 4. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in January
St. Augustine, FL

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).

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Average rainfall in January
St. Augustine, FL

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").

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Average rainfall days in January
St. Augustine, FL

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).

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Average sea temperature in January
St. Augustine, FL

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).

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Average daylight in January /
Average sunshine in January
St. Augustine, FL

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).

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Average UV index in January
St. Augustine, FL

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).

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St. Augustine, Florida, USA

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