St. Augustine, FL - Detailed climate information and monthly weather forecast

Frequently asked questions
Average temperature
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average UV index

Palm trees and colorful houses in front of water fountains in a popular town square in St. Augustine, Florida, with a very cloudy sky on a sunny day

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.

How much does it rain in St. Augustine?

Throughout the year, there are 116 rainfall days, and 50" (1269.9mm) of precipitation is accumulated.

What is the month with the lowest UV index in St. Augustine?

January and December, with an average UV index of 4, are months with the lowest UV index in St. Augustine, Florida.

What month is the ocean coldest in St. Augustine?

February is the month with the coldest seawater in St. Augustine, Florida, with an average ocean temperature of 64.2°F (17.9°C). For swimming, a surface water temperature of 64.2°F (17.9°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).

What is the month with the highest UV index in St. Augustine?

June and July, with an average UV index of 11, are months with the highest UV index in St. Augustine, Florida.

What is the warmest month in St. Augustine?

With an average high-temperature of 90°F (32.2°C) and an average low-temperature of 72°F (22.2°C), July is the warmest month.

When is the ocean warmest in St. Augustine?

The month with the warmest seawater in St. Augustine is August, with an average ocean temperature of 83.8°F (28.8°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

What is the rainiest month in St. Augustine?

The month with the most rainfall is September when the rain falls for 13 days and typically aggregates up to 7.5" (190.5mm) of precipitation.

What is the driest month in St. Augustine?

The month with the least rainfall is November when the rain falls for 7 days and typically collects 2.3" (58.4mm) of precipitation.

Today

Tomorrow

Long-term

Climate J F M A M J J A S O N D Year

Average high temperature in January:
66°F
Average high temperature in February:
69°F
Average high temperature in March:
73°F
Average high temperature in April:
78°F
Average high temperature in May:
84°F
Average high temperature in June:
88°F

Average high temperature in July:
90°F
Average high temperature in August:
89°F
Average high temperature in September:
86°F
Average high temperature in October:
81°F
Average high temperature in November:
74°F
Average high temperature in December:
68°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
Average low temperature in February:
49°F
Average low temperature in March:
53°F
Average low temperature in April:
58°F
Average low temperature in May:
65°F
Average low temperature in June:
71°F

Average low temperature in July:
72°F
Average low temperature in August:
73°F
Average low temperature in September:
71°F
Average low temperature in October:
65°F
Average low temperature in November:
56°F
Average low temperature in December:
49°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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The wettest month (with the highest rainfall) is September (7.5").
The driest month (with the lowest rainfall) is November (2.3").

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Average rainfall days - St. Augustine, FL

Average rainfall days in January:
8 days
Average rainfall days in February:
8 days
Average rainfall days in March:
8 days
Average rainfall days in April:
6 days
Average rainfall days in May:
8 days
Average rainfall days in June:
13 days

Average rainfall days in July:
15 days
Average rainfall days in August:
15 days
Average rainfall days in September:
13 days
Average rainfall days in October:
8 days
Average rainfall days in November:
7 days
Average rainfall days in December:
7 days

Months with the highest number of rainy days are July and August (15 days).
The month with the lowest number of rainy days is April (6 days).

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Average sea temperature - St. Augustine, FL

Average sea temperature in January:
64.3°F
Average sea temperature in February:
64.3°F
Average sea temperature in March:
66°F
Average sea temperature in April:
71.3°F
Average sea temperature in May:
75.8°F
Average sea temperature in June:
80.2°F

Average sea temperature in July:
82.3°F
Average sea temperature in August:
83.8°F
Average sea temperature in September:
83.2°F
Average sea temperature in October:
79.9°F
Average sea temperature in November:
74°F
Average sea temperature in December:
68.2°F

The best month for swimming (with the highest average sea temperature) is August (83.8°F).
Coldest months (with the lowest average sea temperature) are January and February (64.3°F).

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Average daylight / Average sunshine - St. Augustine, FL

The month with the longest days is June (Average daylight: 14.1h).
The month with shortest days is December (Average daylight: 10.2h).

Months with most sunshine are March, April, May, June, July and August (Average sunshine: 9h).
The month with least sunshine is December (Average sunshine: 6h).

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