World Resorts USA Siesta Key Weather

Siesta Key weather in July

Weather in Siesta Key: July

Average day temperature: 88.3°F
Average night temperature: 80.3°F
Sea water temperature: 87.1°F
Number of sunny days: 8 days
Day length: 13.4 - 13.8 hours
Number of rainy days: 4 days
Precipitation totals: 2.4 in.

Air temperature in July, °F

Show year:
2026
2025
2024

The highest day temperature during July of 2026 was 95°F. At the same time the lowest night temperature was 73°F. Daily and nightly averages during July were 89.9°F and 78.4°F.

Sea water temperature in Siesta Key in July, °F

Show year:
2026
2025
2024

The average sea water temperature in July of 2026 was 87.6°F. The highest and lowest sea temperatures during the month were 88.9°F and 85.3°F.

Sunny, partly cloudy and cloudy days

Mostly all days in July are partly cloudy but sunny or cloudy days are also possible.

Precipitation total in July, in.

Precipitation total value in Siesta Key in July is 2.4 in. Other months of the year show relatively similar values.

Wind speed in July, mph

The average wind speed value in July is 7.8 mph It makes July lest windy month of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in July is: 8.1.

Best time for vacation in Siesta Key

Sunniest months:
March 21 days
May 19 days
April 18 days
Warmest months:
August 88.3 °F
July 88.3 °F
June 87.0 °F
Warmest sea temp:
August 87.5 °F
July 87.1 °F
September 85.8 °F
Coldest months:
January 66.9 °F
February 70.7 °F
December 70.9 °F
Rainiest months:
July 4 days
June 4 days
September 3 days
Windiest months:
November 10.5 mph
January 10.4 mph
October 10.4 mph

Siesta Key on a weather map

Siesta Key
+75°F
W 7 mph
Feels like: +81°F
Precip.: 14%
Places in USA:
Name
°F
+55°F
+64°F
+79°F
+77°F
+70°F
+81°F
+63°F
+63°F
+68°F
+59°F
+68°F
+73°F
+79°F
+63°F
24 Hours Forecast
Siesta Key
Local time: 06:10
September 19, saturday
0900
77°F
W
7 mph
1200
84°F
W
5 mph
1500
88°F
E
4 mph
1800
84°F
E
7 mph
2100
84°F
E
4 mph
September 20, sunday
0000
81°F
W
8 mph
0300
79°F
W
7 mph
0600
77°F
W
7 mph
Units of measurement: °C / °F