Mafia Island Sea Temperature

Updated Mon 05:51 (Africa/Dar_es_Salaam)

Tanzania · Forecast updated Aug 10, 2026, 05:51 UTC

Current Sea Temperature

26.3°C

79.3°F

Warm water

Versus this month's average

Close to average

The August average in our archive is 26.2°C (79.2°F).

Recent trend

Warming by 0.3°C

Seven-day average: 26.3°C, versus 26.0°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 Mafia Island, monthly averages range from about 26.1°C (79.1°F) in July to 27.6°C (81.6°F) in June.

Over the past 30 days, the average sea temperature in Mafia Island has been 26.1°C.

Month	Min	Average	Max
June	26.1°C / 79.0°F	27.6°C / 81.6°F	28.1°C / 82.6°F
July	25.0°C / 77.0°F	26.1°C / 79.1°F	26.7°C / 80.1°F
August	25.9°C / 78.6°F	26.2°C / 79.2°F	26.5°C / 79.7°F

Profile calculated from 1694 hourly forecast records across 3 monthly periods. This is a growing archive, not a long-term climate normal.

Marine-park island with whale sharks and pristine reef south of Zanzibar.

The current sea surface temperature in Mafia Island is 26.3°C. Over the last 30 days, the average has been 26.1°C.

The warmest monthly average in the Mafia Island archive is June, at around 27.6°C (81.6°F).

The coldest monthly average in the archive is July, at around 26.1°C (79.1°F).

At 26.3°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 Mafia Island.