Pennington Bay - surf spot statistics

Best Surf Season (April - September)

The Southern Ocean roars to life during the autumn and winter months, sending consistent, long-period groundswells marching toward Pennington Bay. With the subtropical ridge pushing north, we see a climatological increase in offshore winds from the north through northwest quadrants. Ideal wind conditions blow between 27% and 28% of the time from May through July, while swell heights average a solid 1.8m to 2.0m with periods reaching 12.0s to 12.2s. This is when the bay really turns on, offering powerful, well-shaped lines that wrap into the south-facing beach. Get ready for some pumping sessions.

Fair Surf Season (March & October)

The transition months of March and October serve up a mixed bag. Swell energy remains good, averaging 1.7m to 1.8m with long periods around 11.7-11.8s, but the wind window tightens. Ideal offshore flow drops to the 12-18% range as the synoptic pattern becomes more fickle. You'll still score plenty of fun waves, especially when a strong high-pressure system parks over the continent and funnels clean NW winds across the coast. Just be ready to pick your days.

Low Surf Season (November - February)

During late spring and summer, the surf at Pennington Bay takes a backseat. While swell from the Southern Ocean still filters in at 1.7m on average with 11s periods, the dominant wind patterns shift. Sea breezes and synoptic onshore flow from the SE and SSE dominate, spoiling conditions with cross-onshore chop. Ideal offshore wind occurs less than 13% of the time. You can still find fun-sized waves on the rare day when a cold front passes through and a NW wind clean-up follows, but consistency is low. Time to plan a trip north or just take a break.

December: Summer Onslaught – Onshore and Unsettled

December rounds out the year with typical summer patterns. Swell averages 1.7m and 11.1s, with SSW (39.4%) and SW (28.1%) still dominating the direction. However, the wind is a persistent problem. SE (18.5%) and SSE (15.4%) howl onshore, creating messy, chopped-out conditions. Ideal offshore wind only occurs 10% of the time. The rare NW wind day can produce clean, fun waves, but they are few and far between. The swell is there, but the wind ruins most days. It's the toughest month to score quality surf at Pennington Bay.