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British Indian Ocean Territory- Diego Garcia Island
Conditions at Diego Garcia Island in April
April: Crossing the Monsoon Threshold
April is the pivot month. The average swell height moves up to around 6ft (1.8m) and the average period clocks in at 12.0s, the longest of the year, but the ideal wind statistic drops to 28 percent as the southeast trades begin to strengthen. Wind directions shift quickly toward ESE (20.5%) and SE (14.6%), while westerly flow becomes less frequent. The swell picture is dominated by SSE (46.5%) and S (32.5%), with a significant portion of the SSE energy in the 6-8ft (1.8-2.4m) class. This is powerful groundswell, but the direction is increasingly unfavourable for Diego Garcia's preferred west-to-northwest window. The upside is that there are still enough light-wind windows and water temperatures peak at 29.4°C. With air temperatures around 28.0°C and rainfall down to 4.77mm/day, April offers some clean, warm surf if you can pick the right day, but the trades are already knocking on the door.
Average Spot conditions at Diego Garcia Island in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Diego Garcia Island during April. 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 April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Diego Garcia Island for April. 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.