Why is Florida So Hot? 5 Reasons Based on Science & Data

Florida seems like an affordable paradise, but why is Florida so hot and what exactly makes it so warm compared to many other states?

Why does it also seem like it has been getting hotter recently?

In this article, we’ll explore the scientific justifications for Florida’s all-year warmth.

Essentially, it comes down to Florida’s distinctive location and weather patterns that contribute to the state’s extremely hot temperatures.


Even though there are many great cities across the Sunshine State, many of them are hot (sometimes unbearably so) throughout the whole year.

So, let’s investigate the five fundamental scientific explanations for why Florida is so hot.

1. Latitude and Solar Radiation

Florida’s hot climate is mostly a result of its geographic location. Florida is situated  closer to the equator than most other US states. It even is home to the southernmost point in the whole nation in Key West.

Due to the increased amount of direct sunlight that Florida receives, its overall solar radiation is much higher than almost every other state.

On average, Florida receives an impressive 2,800 to 3,000 hours of sunshine each year. This abundant sunlight contributes to higher temperatures and a generally warmer climate.

For example, Miami boasts an average annual temperature of around 77°F, with summer averages frequently exceeding 90°F as well.

Additionally, Florida’s coastal regions are impacted by the surrounding bodies of water, which include the balmy Gulf of Mexico as well as the Atlantic Ocean.

These waters act as a heat sink that absorbs and retains heat, then slowly releases it back into the surrounding atmosphere.

2. Subtropical Climate and Humidity

Florida’s climate is officially classified as subtropical, which significantly contributes to its hot and humid conditions.

This climate classification arises from the combination of warm ocean currents and prevailing winds from the south.

Together, they create a tropical-like environment with high levels of humidity.

According to years and years of historic data, Florida’s average relative humidity has often exceeded 70%, particularly during the summer months.

This abundant moisture in the air hinders rapid cooling, intensifying the perceived heat in the region. The high humidity also slows down the evaporation of sweat on your body, making hot days feel even more sweltering on your skin since you’re not actually getting cooled.

3. Sea Breezes and Convection

Florida’s unique shape, characterized by an extensive coastline, helps create the occurrence of sea breezes.

In general, land heats up more quickly than the water during the day. Then, warm air rises, creating a low-pressure area over land.

Consequently, cooler air from the sea flows inland, replacing the rising warm air, and generating a sea breeze.

Sea breezes help moderate temperatures near coastal areas, providing some relief from the heat.

However, they can also bring higher humidity levels and occasionally develop into thunderstorms, adding to the overall moisture content of the region.

Additionally, the temperature from the sea could also be quite high, so the sea “breeze” could be actually warmer air, especially during the winter months.

4. Prevailing Wind Patterns and Weather Systems

Florida’s location and atmospheric conditions are influenced by prevailing wind patterns and weather systems.

During the summer months, prevailing winds from the southeast and southwest transport warm, moist air from the Caribbean and the Gulf of Mexico over the state.

These tropical air masses bring additional heat and humidity to Florida, intensifying its already warm climate.

Recent data highlights the influence of these winds on temperature patterns, with average high temperatures reaching the low to mid-90s°F during the summer.

Florida’s proximity to the Bermuda-Azores High, a semi-permanent area of high pressure in the Atlantic Ocean, further contributes to its heat. The clockwise circulation around this high-pressure system maintains a steady flow of warm air toward Florida, amplifying temperatures and ensuring long, hot summers.

5. Urban Heat Island Effect

The urban heat island effect is another significant additional element that makes Florida so hot, especially in urban areas.

As cities like Miami, Orlando, and Tampa rapidly urbanize, the abundance of concrete, asphalt, and buildings in these cities causes localized temperature spikes.

Recent data indicates that the urban areas in Florida can experience temperature differences of up to 10°F more compared to nearby rural areas across the state.

The replacement of natural vegetation with artificial materials disrupts the balance between the energy that is absorbed and released, further aiding the rise in temperature.

More heat is absorbed from the sun’s rays by dark surfaces like asphalt than by lighter ones like grass or trees. In addition, building structures and infrastructure serve as barriers that restrict ventilation and trap heat in urban areas.

While the urban heat island effect is not exclusive to Florida, the state’s warm climate and rapid urbanization have intensified its influence on temperature patterns.

6. Warm Ocean Currents and the Gulf Stream

Another reason why Florida sizzles under the sun is due to the powerful influence of warm ocean currents, specifically from the mighty Gulf Stream.

This water current originates in the Gulf of Mexico’s warm, tropical waters and streams up along the eastern coast of North America, starting with Florida.

As the Gulf Stream flows upwards towards the north, it slowly loses its heat, but at the beginning, it still has enough energy to heat up Florida.

This influx of balmy water acts as a consistent source of heat, turning up the dial on the already scorching climate of the state.

Amazingly, the Gulf Stream manages to maintain water temperatures significantly higher than the surrounding ocean, even during the cooler months.

But the Gulf Stream’s impact doesn’t stop at heat—it also adds to the mugginess of Florida’s atmosphere.

When these warm ocean currents interact with the air masses wafting above them, they infuse the atmosphere with moisture.

It’s like adding fuel to the fire and helps to amplify the already muggy conditions. The combination of this moisture, together with Florida’s subtropical climate, creates an environment where humidity hangs in the air, making the heat feel even more stifling.

Summary – Why is Florida So Hot?

So, why is Florida so hot these days? The state’s scorching climate can mainly be attributed to a combination of geographic factors, such as its latitude and proximity to large bodies of warm water, as well as its subtropical climate and the wind patterns that flow over its land.

The scientific reasons outlined in this article explain why Florida is so hot regardless of the time of year.

Hopefully this information can help you plan your visit or move to Florida and give you the foundation to understand why it gets so hot.

Research Methodology

To uncover the scientific reasons behind Florida’s hot climate, we relied on a combination of reputable sources, including scientific studies, climate data, and authoritative publications. Our research methodology involved the following steps:

Literature Assessment:
To find studies and papers that looked into the causes of Florida’s hot climate, we did a thorough assessment of the available literature. We concentrated on information from respected scientific organizations, academic publications, and peer-reviewed journals.

Data Analysis:
We looked at the temperature records, precipitation trends, and humidity levels for Florida’s climate (also compared to other states). We evaluated information from dependable sources including the state climatology departments and the National Oceanic and Atmospheric Administration (NOAA).

Cross-Referencing and Verification:
To ensure the reliability of the information we found, we cross-referenced data from multiple sources, such as government-based databases, Wikipedia, and an overall consensus among other reputable resources.

Scientific Consensus:
We included observations that have received widespread scientific consensus in the climatology community. We concentrated on ideas and explanations that were generally accepted and backed up by data from peer-reviewed studies.

Please remember that climate science is always improving and we may see the emergence of new studies and data in the future. This article reflects the most current and accurate information as of the time of publication.