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British Indian Ocean Territory- Diego Garcia Island
Conditions at Diego Garcia Island in July
July: Peak Trade Wind Season
July is arguably the low point of the surf year for this east-facing spot. The average swell height peaks with August at around 8-9ft (2.6m), but the ideal wind statistic bottoms out at a brutal 1 percent. The wind rose is almost entirely SE (47.6%) and ESE (36.9%), with SE winds between 20 and 40kph accounting for over 42% of all observations. Swell remains concentrated in the SSE (27.6%) and SE (15.0%) quadrants, with the bulk of the energy in the 6-8ft (2-2.5m) range and a notable 1.8% of SSE plus 1.5% of SE exceeding 8ft (2.5m). Periods are still long at 11.7s, but the consistent trade wind blows across the swell lines and prevents any clean structure from forming. Water temperature drops to 27.0°C, air temps are the coolest of the year at 26.5°C, and rainfall remains low at 3.75mm/day. If you find a sheltered corner, there may be raw power to be had, but this is not a month for memorable Diego Garcia surf.
Average Spot conditions at Diego Garcia Island in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Diego Garcia Island during July. 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 July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Diego Garcia Island for July. 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.