Gulf of Thailand water temperature
Gulf of Thailand, Koh Tao / Sairee · Sea/Coast
The current water temperature at Gulf of Thailand is 30.0 °C (as of September 20, 2026, source: Open-Meteo marine model).
The sea lags the air by weeks: the warmest water often arrives after the warmest days. Measured buoy values show this honestly.
Measurement series & statistics
This measurement series includes 609 data points since July 22, 2026.
Lowest recorded value: 29.2 °C on September 14, 2026 · highest value: 31.1 °C on August 3, 2026.
In September, temperatures have ranged between 29.2 °C and 30.2 °C.
The current value is 0.2 °C above the September average of this series.
More measuring points: Gulf of Thailand
Frequently asked questions
Can you swim at Gulf of Thailand right now?
The current water temperature is 30.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Gulf of Thailand?
Currently 30.0 °C (updated continuously).
How warm is at Gulf of Thailand in September?
In September, the water temperature recently averaged 29.8 °C.
When is the water warmest at Gulf of Thailand?
Across the measurement record, July is on average the warmest month (30.2 °C).
