Hermitage Lagoon Sea Temperature

Réunion · Forecast updated Jul 15, 2026, 06:58 UTC

Current Sea Temperature

24.8°C

76.6°F

Mild water

Versus this month's average

0.3°C below

The July average in our archive is 25.1°C (77.2°F).

Recent trend

Holding fairly steady

Seven-day average: 25.0°C, versus 25.1°C in the prior seven days.

What to wear

Mild water

A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.

Cold tolerance varies. Wind, session length, sunshine, and exertion also affect comfort; temperature alone does not mean the sea is safe.

Sea Surface Temperature Over the Year

In the data collected for Hermitage Lagoon, monthly averages range from about 25.1°C (77.2°F) in July to 26.0°C (78.9°F) in June.

Over the past 30 days, the average sea temperature in Hermitage Lagoon has been 25.4°C.

Month	Min	Average	Max
June	25.2°C / 77.4°F	26.0°C / 78.9°F	26.9°C / 80.4°F
July	24.6°C / 76.3°F	25.1°C / 77.2°F	25.4°C / 77.7°F

Profile calculated from 1071 hourly forecast records across 2 monthly periods. This is a growing archive, not a long-term climate normal.

Protected west-coast lagoon with shallow coral and reef fish.

The current sea surface temperature in Hermitage Lagoon is 24.8°C. Over the last 30 days, the average has been 25.4°C.

The warmest monthly average in the Hermitage Lagoon archive is June, at around 26.0°C (78.9°F).

The coldest monthly average in the archive is July, at around 25.1°C (77.2°F).

Yes — at 24.8°C the water is warm enough for comfortable swimming and snorkeling.

See how today's sea temperature, wave height, wind, and tides combine into a detailed snorkeling score for Hermitage Lagoon.