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British Indian Ocean Territory- Diego Garcia Island
Conditions at Diego Garcia Island in August
August: The Grind of the Southeast Trades
August keeps the same stubborn pattern as July, with the average swell height holding around 8-9ft (2.6m) and the wave period a still-solid 11.4s. The ideal wind percentage stays at just 1 percent. The trade wind field is the most relentless of the year: SE (54.7%) and ESE (31.4%) combined make up 86% of all wind observations, with SE winds in the 30-40kph class peaking at 28.7% of the month. Swell direction continues to be dominated by SSE (25.1%) and SE (18.7%), and the 6-8ft (2-2.5m) band is everywhere: SE (15.4%) and SSE (19.8%) plus over-size contributions of 1.6% and 1.7%, respectively. For all that energy, almost none arrives from the preferred west-to-northwest window. Water temperatures reach their annual minimum at 26.8°C, air temps bottom out near 26.3°C, and precipitation is the driest of the year at 3.38mm/day. This is the very heart of the hostile season.
Average Spot conditions at Diego Garcia Island in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Diego Garcia Island during August. Based on historical data, there is a % probability of groundswell occurring this month. The chart below provides a detailed breakdown of the average wave height distribution, offering deep insights into the swell quality and surf potential you can expect at Diego Garcia Island for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Diego Garcia Island for August. Our analysis shows that favorable offshore or side-shore winds coincide with surfable swell approximately % of the time. The accompanying graph illustrates the average size distribution of waves during these optimal wind windows at Diego Garcia Island.