Surf forecastStatisticsHistorical report

Whale Beach seasonal overview

Best Surf Season (May - August)

Winter in Australia brings a consistent stream of powerful, long-period swell from the East-North-East through Southeast quadrants, with average wave periods climbing to 9.5 seconds. This is the sweet spot for Whale Beach's east-facing setup. The Tasman Sea becomes a well-oiled machine, churning out clean lines as strong high-pressure systems park themselves south of the continent, generating cool, offshore winds from the WSW to NW. With ideal wind frequencies peaking above 55% (topping out at 62% in July), you can expect plenty of glassy mornings and groomed faces. Swell heights sit consistently in the 1-1.5m fun-to-solid range, with a healthy dose of 1.5-2.5m pumping days when low-pressure systems deepen off the south coast. This is prime time for Whale Beach – think clean, rippable walls without the summer crowds.

Fair Surf Season (April & September - October)

April and September act as the transition doors between distinct regimes. In April, autumn's lingering low-pressure troughs still deliver reliable ENE to SSE swell, but the average period ticks up to 9.2s as winter approaches. The biggest upgrade is the offshore wind window – ideal wind frequency jumps to 41%, meaning more dawn patrol sessions with groomed conditions before the sea breeze kicks in. September and October see the winter machine winding down: swell periods drop back to 8.5-8.9s and heights soften slightly, but the SE to SSE component remains dominant. Wind consistency is decent (34-47% ideal), though afternoons can get a bit of a northeasterly whiff. These months offer solid surf, especially when a late-season Tasman low lines up with a high-pressure system – you'll get punchy, lined-up waves that hold their shape well.

Low Surf Season (November - March)

Summer in the Southern Hemisphere is Whale Beach's toughest period for quality surf. The dominant swell shifts to a more northerly influence, with NE to E pulses often taking over, but the average period hovers around 8.1-8.2s – plenty of chop and inconsistency. The real killer is the wind: the prevailing NE to SE sea breeze is onshore for this east-facing beach, ruining wave shape. Ideal wind frequency plummets to a meager 17-21% from December to February. Combine that with smaller average swell heights (still 1.3-1.4m) and you're often looking at groveling conditions. However, the rare east coast low can fire up some punchy ENE to SE swell with longer periods, especially in March when ideal wind jumps slightly to 26%. If you time it right, you can score a fun session, but consistency is low – patience is key.

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Conditions at Whale Beach in December

December: Summer Doldrums Set In

December sees the full summer pattern. The swell mix is similar to November: ENE (19.1%), E (17.5%), ESE (16.4%), SE (17.8%), and SSE (19.5%). Periods linger at 8.1s, wave heights average 1.3m. The high-energy 1.5-2m range is still present (e.g., SSE 6.4%, ENE 3.1%) but less consistent. Wind ideal percentage slumps to 21%. The dominant onshore flow is from NE (11.7%), ENE (13.0%), E (8.0%), and SSE (10.2%) – all blowing right into Whale Beach's east-facing orientation. The only saving grace is the rare east coast low that can spin up in the Tasman, bringing a day or two of strong, long-period ESE to SE swell with southerly winds that can be offshore at Whale Beach. But those days are few and far between. For the most part, December offers groveling conditions and a lot of wind chop. If you're determined, look for pre-dawn windows with a light W or NW wind – they're the only real chances for a clean wave.

Average Spot conditions at Whale Beach in December

Swell history for December

0 - 0.5
0.5 - 1
1 - 1.5
1.5 - 2.0
2.0 - 2.5
> 2.5 m

Wind history for December

0 - 10
10 - 20
20 - 30
30 - 40
40 - 50
> 50 km/h

Swell quality

Analyze the groundswell consistency at Whale Beach during December. 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 Whale Beach for your next trip in December.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Whale Beach for December. 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 Whale Beach.

Swell with good wind

Swell with good wind by size