July 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 July

As St. Augustine, Florida enters the hottest period of the year, July comes in with its peak summer schedule. High temperatures and sea surface temperatures set the stage for beach activities and water sports. A notable aspect is the highest average rainfall during the year, which measured 5.7" (145mm), manifested over 15 days. Despite the showers, the city glimpses brightly lit days with abundant sunshine hours, keeping the vibrant summer spirit alive. The weather in July offers a stimulating experience, merging summer heat with refreshing showers.

Temperature

July, marked by an average high-temperature of 90°F (32.2°C) and a low-temperature of 72°F (22.2°C), is the warmest month in St. Augustine.

Rainfall

In St. Augustine, in July, during 15 rainfall days, 5.71" (145mm) of precipitation is typically accumulated. In St. Augustine, during the entire year, the rain falls for 116 days and collects up to 50" (1270mm) of precipitation.

Ocean temperature

In St. Augustine, in July, the average water temperature is 82.2°F (27.9°C).
Note: Surface water temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are considered superb and highly pleasant for water activities over extended periods.

Daylight

In July, the average length of the day in St. Augustine is 13h and 51min.
On the first day of the month, sunrise is at 6:28 am and sunset at 8:30 pm. On the last day of July, in St. Augustine, sunrise is at 6:44 am and sunset at 8:18 pm EDT.

Sunshine

March through August, with an average of 9h of sunshine, are months with the most sunshine in St. Augustine.

UV index

The months with the highest UV index in St. Augustine, Florida, are June and July, with an average maximum UV index of 11. A UV Index reading of 11, and higher, represents an excessive health risk from exposure to the Sun's UV rays for average individuals.
Note: A typical high UV index of 11 in July suggests the following recommendations:
Undertake all key precautions, as unprotected skin and eyes may get burns in no time. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun. A broad-spectrum sunscreen of SPF 30+ should be used liberally and reapplied every two hours or post an outdoor workout or swim. Take note! The UV strength of the Sun elevates when reflected off water and sand.

Frequently asked questions

What is the warmest month?

Temperature records mark July as the warmest month, with highs averaging 90°F (32.2°C) and lows at 72°F (22.2°C).

How hot does it get in July?

The average high-temperature and low-temperature in St. Augustine during July are 90°F (32.2°C) and 72°F (22.2°C) respectively.

How much does it rain in July?

In St. Augustine, in July, it is raining for 15 days, with typically 5.71" (145mm) of accumulated precipitation.

What is the ocean temperature in July?

In St. Augustine, the average seawater temperature in July is 82.2°F (27.9°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in July?

In July, the average day length in St. Augustine is 13h and 51min.

What time are sunrise and sunset in July?

On the first day of July, sunrise is at 6:28 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 8:18 pm EDT.

What are the months with the most sunshine?

The months with the most sunshine are March through August, with an average of 9h of sunshine.

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

In July, the average sunshine duration is 9h.

When is the highest UV index?

The months with the highest UV index are June and July, with an average maximum UV index of 11.

What is the UV index reading in July?

The average daily maximum UV index in July is 11. A UV Index reading of 11, and higher, represents an excessive health risk from unprotected exposure to UV radiation.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in July
St. Augustine, FL

Average temperature in July - St. Augustine, FL
  • Average high temperature in July: 90°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 July: 72°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 July
St. Augustine, FL

Average rainfall in July - St. Augustine, FL
  • Average rainfall in July: 5.7"

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 July
St. Augustine, FL

Average rainfall days in July - St. Augustine, FL
  • Average rainfall days in July: 15 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 July
St. Augustine, FL

Average sea temperature in July - St. Augustine, FL
  • Average sea temperature in July: 82.3°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 July /
Average sunshine in July
St. Augustine, FL

Average daylight in July / Average sunshine in July - St. Augustine, FL
  • Average daylight in July: 13h and 5min

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 July: 9h

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 July
St. Augustine, FL

Average UV index in July - St. Augustine, FL
  • Average UV index in July: 11

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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