Florida · Island
Virginia Key
Biscayne Bay
81.1°F-0.5° vs 24h ago
Next low tide12:15 AMThu · 0.79 ft MLLW
Observed
Florida Straits · Island
Key West
Water temperature & tides
WATER TEMPERATURE Station observation
82.0°F
-0.5° compared with 24 hours earlier
COMING UP · LOCAL TIME
Predicted heights above MLLW. Astronomical tide predictions do not include storm surge.
✓
Official weather alerts shown above. Local water-quality closures are not included. Check local beach authorities.
RECENT OBSERVATIONS
Water temperature
Past 72 hours at Key West. Gaps are left visible.
View observation table
| Local date & time | Water temperature |
|---|---|
| Oct 21 · 11:00 PM EDT | 82.0°F |
| Oct 21 · 10:54 PM EDT | 82.0°F |
| Oct 21 · 10:48 PM EDT | 82.0°F |
| Oct 21 · 10:42 PM EDT | 82.0°F |
| Oct 21 · 10:36 PM EDT | 82.2°F |
| Oct 21 · 10:30 PM EDT | 82.2°F |
| Oct 21 · 10:24 PM EDT | 82.2°F |
| Oct 21 · 10:18 PM EDT | 82.2°F |
| Oct 21 · 10:12 PM EDT | 82.2°F |
| Oct 21 · 10:06 PM EDT | 82.0°F |
| Oct 21 · 10:00 PM EDT | 82.0°F |
| Oct 21 · 9:54 PM EDT | 82.0°F |
| Oct 21 · 9:48 PM EDT | 82.2°F |
| Oct 21 · 9:42 PM EDT | 82.2°F |
| Oct 21 · 9:36 PM EDT | 82.2°F |
| Oct 21 · 9:30 PM EDT | 82.2°F |
| Oct 21 · 9:24 PM EDT | 82.2°F |
| Oct 21 · 9:18 PM EDT | 82.2°F |
| Oct 21 · 9:12 PM EDT | 82.2°F |
| Oct 21 · 9:06 PM EDT | 82.2°F |
| Oct 21 · 9:00 PM EDT | 82.2°F |
| Oct 21 · 8:54 PM EDT | 82.2°F |
| Oct 21 · 8:48 PM EDT | 82.2°F |
| Oct 21 · 8:42 PM EDT | 82.2°F |
| Oct 21 · 8:36 PM EDT | 82.2°F |
| Oct 21 · 8:30 PM EDT | 82.4°F |
| Oct 21 · 8:24 PM EDT | 82.4°F |
| Oct 21 · 8:18 PM EDT | 82.4°F |
| Oct 21 · 8:12 PM EDT | 82.4°F |
| Oct 21 · 8:06 PM EDT | 82.4°F |
| Oct 21 · 8:00 PM EDT | 82.4°F |
| Oct 21 · 7:54 PM EDT | 82.4°F |
| Oct 21 · 7:48 PM EDT | 82.4°F |
| Oct 21 · 7:42 PM EDT | 82.4°F |
| Oct 21 · 7:36 PM EDT | 82.4°F |
| Oct 21 · 7:30 PM EDT | 82.4°F |
| Oct 21 · 7:24 PM EDT | 82.4°F |
| Oct 21 · 7:18 PM EDT | 82.4°F |
| Oct 21 · 7:12 PM EDT | 82.4°F |
| Oct 21 · 7:06 PM EDT | 82.4°F |
| Oct 21 · 7:00 PM EDT | 82.6°F |
| Oct 21 · 6:54 PM EDT | 82.6°F |
| Oct 21 · 6:48 PM EDT | 82.6°F |
| Oct 21 · 6:42 PM EDT | 82.6°F |
| Oct 21 · 6:36 PM EDT | 82.6°F |
| Oct 21 · 6:30 PM EDT | 82.6°F |
| Oct 21 · 6:24 PM EDT | 82.6°F |
| Oct 21 · 6:18 PM EDT | 82.6°F |
| Oct 21 · 6:12 PM EDT | 82.6°F |
| Oct 21 · 6:06 PM EDT | 82.6°F |
| Oct 21 · 6:00 PM EDT | 82.8°F |
| Oct 21 · 5:54 PM EDT | 82.8°F |
| Oct 21 · 5:48 PM EDT | 82.8°F |
| Oct 21 · 5:42 PM EDT | 82.8°F |
| Oct 21 · 5:36 PM EDT | 82.8°F |
| Oct 21 · 5:30 PM EDT | 82.8°F |
| Oct 21 · 5:24 PM EDT | 82.8°F |
| Oct 21 · 5:18 PM EDT | 82.8°F |
| Oct 21 · 5:12 PM EDT | 82.8°F |
| Oct 21 · 5:06 PM EDT | 82.8°F |
| Oct 21 · 5:00 PM EDT | 82.8°F |
| Oct 21 · 4:54 PM EDT | 82.8°F |
| Oct 21 · 4:48 PM EDT | 82.8°F |
| Oct 21 · 4:42 PM EDT | 82.8°F |
| Oct 21 · 4:36 PM EDT | 82.8°F |
| Oct 21 · 4:30 PM EDT | 82.8°F |
| Oct 21 · 4:24 PM EDT | 82.8°F |
| Oct 21 · 4:18 PM EDT | 82.8°F |
| Oct 21 · 4:12 PM EDT | 82.8°F |
| Oct 21 · 4:06 PM EDT | 82.8°F |
| Oct 21 · 4:00 PM EDT | 82.8°F |
| Oct 21 · 3:54 PM EDT | 82.8°F |
| Oct 21 · 3:48 PM EDT | 82.8°F |
| Oct 21 · 3:42 PM EDT | 82.8°F |
| Oct 21 · 3:36 PM EDT | 82.8°F |
| Oct 21 · 3:30 PM EDT | 82.8°F |
| Oct 21 · 3:24 PM EDT | 82.8°F |
| Oct 21 · 3:18 PM EDT | 82.8°F |
| Oct 21 · 3:12 PM EDT | 82.8°F |
| Oct 21 · 3:06 PM EDT | 82.8°F |
| Oct 21 · 3:00 PM EDT | 82.8°F |
| Oct 21 · 2:54 PM EDT | 82.8°F |
| Oct 21 · 2:48 PM EDT | 82.8°F |
| Oct 21 · 2:42 PM EDT | 82.8°F |
| Oct 21 · 2:36 PM EDT | 82.6°F |
| Oct 21 · 2:30 PM EDT | 82.6°F |
| Oct 21 · 2:24 PM EDT | 82.6°F |
| Oct 21 · 2:18 PM EDT | 82.6°F |
| Oct 21 · 2:12 PM EDT | 82.6°F |
| Oct 21 · 2:06 PM EDT | 82.6°F |
| Oct 21 · 2:00 PM EDT | 82.6°F |
| Oct 21 · 1:54 PM EDT | 82.6°F |
| Oct 21 · 1:48 PM EDT | 82.6°F |
| Oct 21 · 1:42 PM EDT | 82.6°F |
| Oct 21 · 1:36 PM EDT | 82.6°F |
| Oct 21 · 1:30 PM EDT | 82.6°F |
| Oct 21 · 1:24 PM EDT | 82.6°F |
| Oct 21 · 1:18 PM EDT | 82.6°F |
| Oct 21 · 1:12 PM EDT | 82.6°F |
| Oct 21 · 1:06 PM EDT | 82.6°F |
| Oct 21 · 1:00 PM EDT | 82.4°F |
| Oct 21 · 12:54 PM EDT | 82.4°F |
| Oct 21 · 12:48 PM EDT | 82.6°F |
| Oct 21 · 12:42 PM EDT | 82.6°F |
| Oct 21 · 12:36 PM EDT | 82.4°F |
| Oct 21 · 12:30 PM EDT | 82.4°F |
| Oct 21 · 12:24 PM EDT | 82.4°F |
| Oct 21 · 12:18 PM EDT | 82.4°F |
| Oct 21 · 12:12 PM EDT | 82.4°F |
| Oct 21 · 12:06 PM EDT | 82.4°F |
| Oct 21 · 12:00 PM EDT | 82.4°F |
| Oct 21 · 11:54 AM EDT | 82.4°F |
| Oct 21 · 11:48 AM EDT | 82.4°F |
| Oct 21 · 11:42 AM EDT | 82.4°F |
| Oct 21 · 11:36 AM EDT | 82.4°F |
| Oct 21 · 11:30 AM EDT | 82.4°F |
| Oct 21 · 11:24 AM EDT | 82.4°F |
| Oct 21 · 11:18 AM EDT | 82.4°F |
| Oct 21 · 11:12 AM EDT | 82.4°F |
| Oct 21 · 11:06 AM EDT | 82.4°F |
Latest 120 observations shown in this table.
OFFICIAL ASTRONOMICAL PREDICTIONS
Tides for October 21
NOAA prediction DaylightTimes in America/New_York
| Date | Event | Local time | Height |
|---|---|---|---|
| Wed, Oct 21 | ↘ Low | 12:19 AM EDT | 1.14 ft |
| ↗ High | 6:47 AM EDT | 1.98 ft | |
| ↘ Low | 1:13 PM EDT | 0.81 ft | |
| ↗ High | 7:45 PM EDT | 1.76 ft | |
| Thu, Oct 22 | ↘ Low | 1:15 AM EDT | 0.96 ft |
| ↗ High | 7:46 AM EDT | 2.02 ft | |
| ↘ Low | 1:47 PM EDT | 0.83 ft | |
| ↗ High | 8:13 PM EDT | 1.92 ft | |
| Fri, Oct 23 | ↘ Low | 2:03 AM EDT | 0.74 ft |
| ↗ High | 8:39 AM EDT | 2.04 ft | |
| ↘ Low | 2:18 PM EDT | 0.84 ft | |
| ↗ High | 8:42 PM EDT | 2.09 ft | |
| Sat, Oct 24 | ↘ Low | 2:47 AM EDT | 0.50 ft |
| ↗ High | 9:28 AM EDT | 2.02 ft | |
| ↘ Low | 2:49 PM EDT | 0.85 ft | |
| ↗ High | 9:13 PM EDT | 2.24 ft | |
| Sun, Oct 25 | ↘ Low | 3:30 AM EDT | 0.27 ft |
| ↗ High | 10:17 AM EDT | 1.96 ft | |
| ↘ Low | 3:20 PM EDT | 0.85 ft | |
| ↗ High | 9:46 PM EDT | 2.38 ft | |
| Mon, Oct 26 | ↘ Low | 4:14 AM EDT | 0.08 ft |
| ↗ High | 11:05 AM EDT | 1.85 ft | |
| ↘ Low | 3:52 PM EDT | 0.84 ft | |
| ↗ High | 10:23 PM EDT | 2.48 ft | |
| Tue, Oct 27 | ↘ Low | 5:00 AM EDT | -0.03 ft |
| ↗ High | 11:54 AM EDT | 1.71 ft | |
| ↘ Low | 4:27 PM EDT | 0.84 ft | |
| ↗ High | 11:04 PM EDT | 2.53 ft |
A LITTLE LONGER VIEW
Seasonal water temperatures
NOAA station observations · 2021–2025 baseline. Each published month has at least three qualifying years.
| Month | Mean | 10th–90th percentile | Years used |
|---|---|---|---|
| Feb | 74.7°F | 70.3°F – 78.3°F | 2023, 2024, 2025 |
| Mar | 77.6°F | 74.7°F – 80.6°F | 2023, 2024, 2025 |
| Apr | 80.0°F | 77.2°F – 83.3°F | 2023, 2024, 2025 |
| May | 85.3°F | 81.5°F – 88.7°F | 2023, 2024, 2025 |
| Jun | 87.4°F | 84.9°F – 89.4°F | 2023, 2024, 2025 |
| Jul | 89.4°F | 87.4°F – 91.4°F | 2023, 2024, 2025 |
| Aug | 88.9°F | 86.2°F – 91.4°F | 2021, 2023, 2024, 2025 |
| Sep | 87.8°F | 86.0°F – 89.8°F | 2023, 2024, 2025 |
| Oct | 83.2°F | 79.3°F – 86.7°F | 2023, 2024, 2025 |
| Nov | 78.1°F | 75.0°F – 80.4°F | 2023, 2024, 2025 |
| Dec | 74.1°F | 70.9°F – 78.1°F | 2023, 2024, 2025 |
Hourly UTC observations, at least 70% coverage per station-month-year and at least three qualifying years per calendar month; 10th–90th percentiles of qualifying hourly observations.
BEHIND THE NUMBER
Know where your reading comes from.
A Key West station observation, with official astronomical tide predictions and nearby regional comparisons.
- Monitoring station
- Key West · NOAA 8724580
- Coordinates
- 24.55570, -81.80790
- Water body
- Florida Straits
- Source relationship
- Official NOAA station location; observation applies to the named sensor.
- Last successful collection
- Oct 21, 2026 · 11:10 PM EDT
- Tide reference
- MLLW · Mean Lower Low Water
To report an issue, include the station ID, observation time and source link when contacting the site operator. Read our methodology.
A LITTLE FARTHER ALONG
Nearby stations to compare
Florida · Coast
Clearwater Beach
Gulf of Mexico
74.7°F-0.2° vs 24h ago
Next low tide3:38 AMThu · 1.24 ft MLLW
Observed
Florida · Harbor
Mayport
St. Johns River entrance
72.0°F-0.2° vs 24h ago
Next low tide11:43 PMWed · 1.15 ft MLLW
Observed
Florida · Coast
Panama City Beach
Gulf of Mexico
76.5°F-0.4° vs 24h ago
Next low tide11:13 PMWed · 0.97 ft MLLW
Observed