January weather forecast
St. Augustine, FL

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

January, the same as December, is another enjoyable winter month in St. Augustine, with an average temperature ranging between min 46°F (7.8°C) and max 66°F (18.9°C).

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, 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 St. Augustine, the average water temperature is 64.4°F (18°C).
Note: For most, swimming in 64.4°F (18°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

In January, the average length of the day in St. Augustine 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, 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

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 of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 4 in January transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the coldest month in St. Augustine?

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

What is the temperature in January in St. Augustine?

In January, in St. Augustine, the average high-temperature is 66°F (18.9°C), and the average low-temperature is 46°F (7.8°C).

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

In St. Augustine, in January, during 8 rainfall days, 2.72" (69mm) of precipitation is typically accumulated.

How cold is the water in January in St. Augustine?

In January, the average ocean temperature in St. Augustine, Florida, is 64.4°F (18°C). For most, swimming in 64.4°F (18°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

What is the average length of the day in January in St. Augustine?

In St. Augustine, the average day length in January is 10h and 29min.

What time are sunrise and sunset in January in St. Augustine?

In January, on the first day of the month, sunrise is at 7:20 am and sunset at 5:36 pm. On the last day of the month, in St. Augustine, Florida, sunrise is at 7:15 am and sunset at 6:01 pm EST.

How long on average sun shines in January in St. Augustine?

In January, the average sunshine duration 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.

How high is the UV index in January in St. Augustine?

In St. Augustine, the average daily maximum UV index in January is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average rainfall days
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 29min

The month with the longest days is June (Average daylight: 14h and 2min).
The month with the shortest days is December (Average daylight: 10h and 16min).

  • 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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