Isla Mujeres Sea Temperature
Updated Sat 06:37 (America/Cancun)
Mexico · Forecast updated Aug 8, 2026, 06:37 UTC
Current Sea Temperature
29.1°C
84.4°F
Very warm water
Versus this month's average
Close to average
The August average in our archive is 29.2°C (84.5°F).
Recent trend
Holding fairly steady
Seven-day average: 29.0°C, versus 29.2°C in the prior seven days.
What to wear
Very warm water
Swimwear is usually enough; a rash guard adds sun protection.
Cold tolerance varies. Wind, session length, sunshine, and exertion also affect comfort; temperature alone does not describe sea conditions.
Sea Surface Temperature Over the Year
In the data collected for Isla Mujeres, monthly averages range from about 28.4°C (83.1°F) in June to 29.2°C (84.5°F) in August.
Over the past 30 days, the average sea temperature in Isla Mujeres has been 29.0°C.
Monthly Water Temperature Averages
| Month | Min | Average | Max |
|---|---|---|---|
| June | 27.8°C / 82.0°F | 28.4°C / 83.1°F | 29.2°C / 84.6°F |
| July | 28.2°C / 82.8°F | 28.9°C / 84.0°F | 29.9°C / 85.8°F |
| August | 28.0°C / 82.4°F | 29.2°C / 84.5°F | 30.0°C / 86.0°F |
Profile calculated from 1647 hourly forecast records across 3 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Isla Mujeres
Island off Cancún with the MUSA underwater museum and summer whale sharks.
- Area
- Quintana Roo
Isla Mujeres Water Temperature: Common Questions
What is the sea temperature in Isla Mujeres today?
The current sea surface temperature in Isla Mujeres is 29.1°C. Over the last 30 days, the average has been 29.0°C.
When is the water warmest in Isla Mujeres?
The warmest monthly average in the Isla Mujeres archive is August, at around 29.2°C (84.5°F).
When is the water coldest in Isla Mujeres?
The coldest monthly average in the archive is June, at around 28.4°C (83.1°F).
Can you swim in Isla Mujeres today?
At 29.1°C, the water is usually comfortable for swimming and snorkeling.
Full Snorkeling Forecast
See how today's sea temperature, wave height, wind, and tides combine into a detailed snorkeling score for Isla Mujeres.
View Snorkel Forecast →