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Key West
Water Temperature in the Gulf of Mexico in Key West, Florida: Current, Historical Data and Forecast
On this page, you will find comprehensive information about the sea temperature in Key West in Florida, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Current Water Temperature in Key West
76°F
TODAY
77°F
YESTERDAY
76°F
A WEEK AGO
Analysis, Historical Data, and Forecast of Water Temperature
Today sea water temperature in the Gulf of Mexico (Gulf of America) in Key West is 25.1°F. This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart for Gulf of Mexico (Gulf of America) in Key West Over the Last 30 Days
The water temperature in Key West today is lower than both a week ago and a month ago. Today's sea temperature is generally in line with historical values for this day.
According to our forecast, the sea temperature in Key West will rise slightly in the coming days and reach 79°F.
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts across United States to enhance accuracy.
Water temperature data for Key West and nearby towns and resorts is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| Apr 29 | 76°F | 81°F | |
| Apr 30 | 77°F | 80°F | |
| May 1 | 76°F | 78°F | |
| May 2 | 77°F | 79°F | |
| May 3 | 77°F | 80°F | |
| May 4 | 78°F | 78°F | |
| May 5 | 77°F | 78°F | |
| May 6 | 77°F | 80°F | |
| May 7 | 81°F | 77°F | |
| May 8 | 80°F | 77°F | |
| May 9 | 80°F | 77°F | |
| May 10 | 80°F | 78°F | |
| May 11 | 81°F | 78°F | |
| May 12 | 81°F | 78°F | |
| May 13 | 82°F | 79°F | |
| May 14 | 82°F | 79°F |
Sea Temperature in Key West Throughout the Year
Throughout the year, the sea temperature in Key West is always above 64°F (18°C), the sea temperature exceeds 72°F (22°C) for 336 days, and exceeds 77°F (25°C) for 237 days.
Below is the annual chart of sea temperature changes in the Gulf of Mexico (Gulf of America) in Key West.
January
| Minimum | Average | Maximum |
|---|---|---|
| 66°F | 71°F | 75°F |
February
| Minimum | Average | Maximum |
|---|---|---|
| 66°F | 73°F | 79°F |
March
| Minimum | Average | Maximum |
|---|---|---|
| 68°F | 74°F | 81°F |
April
| Minimum | Average | Maximum |
|---|---|---|
| 73°F | 78°F | 82°F |
May
| Minimum | Average | Maximum |
|---|---|---|
| 75°F | 82°F | 90°F |
June
| Minimum | Average | Maximum |
|---|---|---|
| 77°F | 83°F | 90°F |
July
| Minimum | Average | Maximum |
|---|---|---|
| 82°F | 87°F | 91°F |
August
| Minimum | Average | Maximum |
|---|---|---|
| 82°F | 87°F | 91°F |
September
| Minimum | Average | Maximum |
|---|---|---|
| 82°F | 87°F | 91°F |
October
| Minimum | Average | Maximum |
|---|---|---|
| 77°F | 82°F | 88°F |
November
| Minimum | Average | Maximum |
|---|---|---|
| 72°F | 78°F | 84°F |
December
| Minimum | Average | Maximum |
|---|---|---|
| 70°F | 75°F | 81°F |
Monthly Water Temperature Histogram for Gulf of Mexico (Gulf of America) in Key West
You can explore detailed data on how the water temperature in Key West varies each month:
What Beaches Are There In and Around Key West?
Higgs Beach
Higgs Beach is a 4-stars sandy beach, is located directly in Key West. There is parking. There are restrooms. There are cafés. Higgs Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Rest Beach Park
Rest Beach Park is a 4-stars sandy beach, is located directly in Key West. There is parking. There are restrooms. There are cafés. Rest Beach Park is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Harvey Rest Beach Park
Harvey Rest Beach Park is a 4-stars sandy beach, is located directly in Key West. There is parking. There are restrooms. There are cafés. Harvey Rest Beach Park is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Smathers Beach
Smathers Beach is a 4-stars sandy beach, is located directly in Key West. There is parking. There are restrooms. There are cafés. Smathers Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
South Beach
South Beach is a 4-stars sandy beach, located in a 2 km (1 miles) radius of Key West. There is parking. There are restrooms. There are cafés. South Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Simonton Beach
Simonton Beach is a 4-stars sandy beach, located in a 2 km (1 miles) radius of Key West. There is parking. There are restrooms. There are cafés. Snorkeling is possible. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Fort Zachary Taylor Historic State Park
Fort Zachary Taylor Historic State Park is a 4-stars sandy beach, located in a 3 km (2 miles) radius of Key West. There is parking. There are restrooms. Fort Zachary Taylor Historic State Park is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Sunset Key Beach
Sunset Key Beach is a 4-stars sandy beach, located in a 3 km (2 miles) radius of Key West. There are restrooms. There are cafés. Sunset Key Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Boca Chica Beach
Boca Chica Beach is a 4-stars sandy beach, located in a 7 km (4 miles) radius of Key West. For those who prefer clothing-optional beaches, Boca Chica Beach is a designated nudist beach. There is parking. Boca Chica Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Key West Weather
MAY 7
79°F / 79°F
broken clouds: 51-84%humidity: 73% | wind: 4 mph
MAY 8
79°F / 79°F
clear skyhumidity: 74% | wind: 4 mph
MAY 9
79°F / 81°F
overcast clouds: 85-100%humidity: 75% | wind: 4 mph
MAY 10
79°F / 79°F
light rainhumidity: 78% | wind: 2 mph
Sea Temperature in the Gulf of Mexico (Gulf of America) in Key West: General Trends and Swimming Opportunities
The coastal region of Florida, United States, features a tropical climate with hot, humid summers and mild, drier winters. Rainfall is significant in the summer, with occasional hurricanes, while the winter months are drier and sunnier.
Key West is located in North America in the Northern Hemisphere at a latitude of 25 degrees, along the shores of the Gulf of Mexico. Key West lies within the Florida in United States.
The average annual daytime air temperature in Key West is 82°F (28°C), with the average nighttime temperature being 70°F (21°C). The highest average daily temperature occurs in August, reaching 90°F (32°C), while the lowest is in January at 74°F (23°C). As for nighttime temperatures, the minimum average temperature of 61°F (16°C) is recorded in January, and the maximum is in July, reaching 77°F (25°C).
According to historical data, Key West experiences 122 rainy days per year, which accounts for 33 percent of all days in the year. On average, there are 10 rainy days each month. The wettest month is August, with 16 rainy days and 6.4 inches (163 mm) of precipitation, while the driest month is April, which typically has 6 rainy days and only 2.4 inches (62 mm) of precipitation.
The average annual water temperature in Gulf of Mexico in Key West is 81°F (27°C). In January, the water reaches its lowest point of the year at 66°F (19°C), while in July, it peaks at 91°F (33°C). The months suitable for comfortable beach vacations and swimming in the Gulf of Mexico are April, May, June, July, August, September, October, November, and December. During this period, the water temperature stays above 68°F (20°C) and can reach up to 91°F (33°C) on some days.
Geographical Location of Key West
Nearby Cities
Frequently Asked Questions About Key West and its Water Temperatures
What is the current sea temperature in Key West?
The water temperature today in the Gulf of Mexico (Gulf of America) in Key West is 76°F (24.6°C).
In which months is the water temperature in Key West comfortable for swimming?
The water temperature in the Gulf of Mexico in Key West is comfortable for swimming and beach vacations in April, May, June, July, August, September, October, November, and December.
What is the water temperature in Key West during the winter?
The water temperature in the Gulf of Mexico in Key West during the winter ranges from 66°F to 81°F (19°C to 27°C).
What is the water temperature in Key West during the spring?
The water temperature in the Gulf of Mexico in Key West during the spring ranges from 68°F to 90°F (20°C to 32°C).
What is the water temperature in Key West during the summer?
The water temperature in the Gulf of Mexico in Key West during the summer ranges from 77°F to 91°F (25°C to 33°C).
What is the water temperature in Key West during the fall?
The water temperature in the Gulf of Mexico in Key West during the fall ranges from 72°F to 91°F (22°C to 33°C).
Is it possible to swim in the sea in Key West year-round?
No, it is not possible to swim in the Gulf of Mexico in Key West year-round, the months suitable for comfortable swimming are April, May, June, July, August, September, October, November, and December.
Is Key West a popular tourist destination for beach vacations?
Key West is a highly popular tourist destination for beach vacations, attracting large numbers of visitors every year due to its beautiful coastline, warm waters, and excellent resort facilities.
What sea temperatures can I expect in Key West in the next month?
In June, the water temperature in the Gulf of Mexico (Gulf of America) in Key West will range between 77°F (25°C) and 90°F (32°C)