Gulf of Mexico water temperature
Gulf of Mexico, Rockport, TX · Sea/Coast
The current water temperature at Gulf of Mexico is 30.4 °C (as of September 20, 2026, source: NOAA NDBC).
The sea lags the air by weeks: the warmest water often arrives after the warmest days. Measured buoy values show this honestly.
Water quality
Official EPA rating: goodMeasurement series & statistics
This measurement series includes 154 data points since August 21, 2026.
Lowest recorded value: 29.3 °C on September 19, 2026 · highest value: 33.1 °C on September 1, 2026.
In September, temperatures have ranged between 29.3 °C and 33.1 °C.
The current value is 1.3 °C below the September average of this series.
Nearby waters
More measuring points: Gulf of Mexico
Frequently asked questions
Can you swim at Gulf of Mexico right now?
The current water temperature is 30.4 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Gulf of Mexico?
Currently 30.4 °C (updated continuously).
How warm is at Gulf of Mexico in September?
In September, the water temperature recently averaged 31.7 °C.
How is the water quality at Gulf of Mexico?
The official classification is: good.
