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Dunedin - St Kilda Beach ratings
Quality on a good day: 3.4
Consistency of Surf: 3.6
Difficulty Level: 2.0
Wind and Kite Surfing: 1.0
Crowds: 3.2

Overall: 3.3

See all 18 ratings

Based on 5 votes. Vote

Surf Report Feed

Dunedin - St Kilda Beach Swell Statistics, March: All Swell – Any Wind

The rose diagram illustrates the range of swells directed at Dunedin - St Kilda Beach through a typical March. It is based on 2716 NWW3 model predictions since 2007 (values every 3 hours). The wave model does not forecast wind or surf right at the shore so we have chosen the optimum grid node based on what we know about Dunedin - St Kilda Beach, and at Dunedin - St Kilda Beach the best grid node is 10 km away (6 miles).

The rose diagram shows the distribution of swell sizes and directions, while the graph at the bottom shows the same thing but without direction information. Five colours illustrate increasing wave sizes. Blue shows the smallest swells, less that 0.5m (1.5 feet) high. These occurred only 27% of the time. Green and yellow show increasing swell sizes and red illustrates largest swells greater than >3m (>10ft). In both graphs, the area of any colour is proportional to how commonly that size swell happens.

The diagram implies that the most common swell direction, shown by the largest spokes, was S, whereas the the most common wind blows from the NW. Because the wave model grid is offshore, sometimes a strong offshore wind blows largest waves away from Dunedin - St Kilda Beach and away from the coast. We group these with the no surf category of the bar chart. To simplify things we don't show these in the rose diagram. Because wind determines whether or not waves are surfable at Dunedin - St Kilda Beach, you can select a similar diagram that shows only the swells that were expected to coincide with glassy or offshore wind conditions. Over an average March, swells large enough to cause good for surfing waves at Dunedin - St Kilda Beach run for about 73% of the time.

IMPORTANT: Beta version feature! Swell heights are open water values from NWW3. There is no attempt to model near-shore effects. Coastal wave heights will generally be less, especially if the break does not have unobstructed exposure to the open ocean.