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

In St. Augustine, temperatures reach their average annual highs in July, measuring 90°F (32.2°C) and a minimum average of 72°F (22.2°C).

Rainfall

In July, in St. Augustine, the rain falls for 15 days. Throughout July, 5.71" (145mm) of precipitation is 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: For activities such as swimming and diving, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as particularly pleasant and satisfying for prolonged periods without feeling uneasy.

Daylight

The average length of the day in July in St. Augustine is 13h and 51min.
On the first day of July in St. Augustine, 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.

Sunshine

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

UV index

June and July, with an average maximum UV index of 11, are months with the highest UV index in St. Augustine. A UV Index estimate of 11, and higher, represents an extreme threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 11 in July translates into this advice:
Employ every crucial safety step. Those with fair skin could experience burns in a matter of minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Apply generously and frequently reapply a sunscreen with SPF 30 or more even on cloudy days, particularly after a swim or outdoor exercise. Alert! UV radiation becomes sharper due to reflections from sand and water.
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Frequently asked questions

What is the hottest time of year in St. Augustine?

July is the warmest month in St. Augustine, Florida, with the temperature often reaching an average high of 90°F (32.2°C) and an average low of 72°F (22.2°C).

How hot does it get in St. Augustine in July?

In St. Augustine, 90°F (32.2°C) is the average high-temperature and 72°F (22.2°C) is the average low-temperature during July.

How many days does it rain in July in St. Augustine?

In St. Augustine, Florida, in July, during 15 rainfall days, 5.71" (145mm) of precipitation is typically accumulated.

What is the water temperature in July in St. Augustine?

In St. Augustine, Florida, the average seawater temperature in July is 82.2°F (27.9°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.

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

The average day length in July in St. Augustine is 13h and 51min.

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

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

What are the months with the most sunshine in St. Augustine?

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

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

In July, the average sunshine duration in St. Augustine, Florida, is 9h.

When is the highest UV index in St. Augustine?

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

What is the UV index reading in July in St. Augustine?

In July, the average daily maximum UV index is 11. A UV Index estimate of 11, and higher, represents an ultimate hazard to health from unsafe exposure to Sun's UV rays.
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).

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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").

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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).

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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).

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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).

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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).

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St. Augustine, Florida, USA

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