Nosy Be Sea Temperature

Updated Tue 06:02 (Indian/Antananarivo)

Madagascar · Forecast updated Aug 11, 2026, 06:02 UTC

Current Sea Temperature

27.4°C

81.3°F

Warm water

Versus this month's average

0.3°C below

The August average in our archive is 27.7°C (81.8°F).

Recent trend

Holding fairly steady

Seven-day average: 27.7°C, versus 27.5°C in the prior seven days.

What to wear

Warm water

Most people are comfortable in swimwear or a light rash guard.

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 Nosy Be, monthly averages range from about 27.7°C (81.8°F) in July to 28.7°C (83.7°F) in June.

Over the past 30 days, the average sea temperature in Nosy Be has been 27.6°C.

Month	Min	Average	Max
June	27.8°C / 82.0°F	28.7°C / 83.7°F	29.7°C / 85.5°F
July	27.3°C / 81.1°F	27.7°C / 81.8°F	28.1°C / 82.6°F
August	27.2°C / 81.0°F	27.7°C / 81.8°F	28.1°C / 82.6°F

Profile calculated from 1719 hourly forecast records across 3 monthly periods. This is a growing archive, not a long-term climate normal.

Northwest island with reef, turtles and seasonal whale sharks in clear water.

The current sea surface temperature in Nosy Be is 27.4°C. Over the last 30 days, the average has been 27.6°C.

The warmest monthly average in the Nosy Be archive is June, at around 28.7°C (83.7°F).

The coldest monthly average in the archive is July, at around 27.7°C (81.8°F).

At 27.4°C, the water is usually comfortable for swimming and snorkeling.

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