2025 Compare Climate & Weather:
Jacksonville, FL vs Siesta Key, FL

Highlights

On average, there are 251 sunny days per year in Siesta Key. Jacksonville averages 221 sunny days per year. The US average is 205 sunny days.

Siesta Key, Florida gets 53.2 inches of rain, on average, per year. Jacksonville, Florida gets 50.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Siesta Key averages 0 inches of snow per year. Jacksonville averages 0.1 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Siesta Key, Florida
Summer High: the July high is around 90.4 degrees
Winter Low: the January low is 51.6
Rain: averages 53.2 inches of rain a year
Snow: averages 0 inches of snow a year

Jacksonville, Florida
Summer High: the July high is around 91.1 degrees
Winter Low: the January low is 43.8
Rain: averages 50.2 inches of rain a year
Snow: averages 0.1 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Siesta Key is 6.8 (10=best), which means it is about average compared to other places in Florida.

The annual BestPlaces Comfort Index for Jacksonville is 7.2 (10=best), which means it is one of the most pleasant places in Florida.

Today's Weather - Jacksonville, FL

70°F

Today's Weather - Siesta Key, FL

74°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Jacksonville / Siesta Key

July is the hottest month for Jacksonville with an average high temperature of 91.1°, which ranks it as about average compared to other places in Florida. In Jacksonville, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Jacksonville are April, October and November.

August is the hottest month for Siesta Key with an average high temperature of 90.5°, which ranks it as cooler than most places in Florida. In Siesta Key, there are 7 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Siesta Key are November, March and April.

January has the coldest nighttime temperatures for Jacksonville with an average of 43.8°. This is colder than most places in Florida.

January has the coldest nighttime temperatures for Siesta Key with an average of 51.6°. This is warmer than most places in Florida.

In Jacksonville, there are 62.1 days annually when the high temperature is over 90°, which is cooler than most places in Florida.

In Siesta Key, there are 70.2 days annually when the high temperature is over 90°, which is about average compared to other places in Florida.

In Jacksonville, there are 9.2 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Florida.

In Siesta Key, there are 1.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Florida.

In Jacksonville, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Florida.

In Siesta Key, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Florida.

September is the wettest month in Jacksonville with 7.3 inches of rain, and the driest month is November with 2.3 inches. The wettest season is Autumn with 37% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 50.2 inches in Jacksonville means that it is one of the driest places in Florida.


August is the wettest month in Siesta Key with 8.9 inches of rain, and the driest month is November with 2.0 inches. The wettest season is Autumn with 47% of yearly precipitation and 14% occurs in Spring, which is the driest season. The annual rainfall of 53.2 inches in Siesta Key means that it is about average compared to other places in Florida.

August is the rainiest month in Jacksonville with 14.3 days of rain, and April is the driest month with only 5.8 rainy days. There are 113.4 rainy days annually in Jacksonville, which is about average compared to other places in Florida. The rainiest season is Autumn when it rains 36% of the time and the driest is Summer with only a 18% chance of a rainy day.

August is the rainiest month in Siesta Key with 16.2 days of rain, and April is the driest month with only 4.8 rainy days. There are 106.0 rainy days annually in Siesta Key, which is less rainy than most places in Florida. The rainiest season is Autumn when it rains 42% of the time and the driest is Summer with only a 15% chance of a rainy day.

An annual snowfall of 0.1 inches in Jacksonville means that it is one of the snowiest places in Florida.

There is rarely any recorded snowfall in Siesta Key, ranking it as one of the least snowy places in Florida.

December is the snowiest month in Jacksonville with 0.1 inches of snow, and no months of the year have significant snowfall.

Any measurable snowfall is a rare occurance in Siesta Key.