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G-Land - surf spot statistics
G-Land seasonal overview
Best Surf Season (May - September)
The heart of the Indonesian dry season aligns perfectly with G-Land's prime time. During these months, the Southern Ocean pumps consistent, long-period SW groundswells into Grajagan Bay, with average heights peaking around 2.0–2.2m and periods averaging 14+ seconds. The dominant southeast trade winds (blowing from E/ESE/SE) provide near-perfect offshore conditions for the west-facing reef, keeping the waves glassy and clean. This is when the legendary barrels at Money Trees and the long left-handers come alive in all their glory. Expect firing conditions with 1.5–2.5m+ waves and light offshore breezes a high percentage of the time.
Fair Surf Season (April & October)
The shoulder months of April and October offer a slight transition. Swell heights remain solid, averaging 1.7–1.8m with long periods (13.7–13.8s), and the offshore wind consistency is still high (over 60% ideal). However, the trade winds may occasionally weaken or shift, and the swell direction can sometimes be a touch more southerly, reducing the peak power. Still, these months deliver plenty of fun, rippable waves in the 1–2m range with favorable winds – a great alternative to the peak season crowds.
Low Surf Season (November - March)
The Australian summer monsoon and the Indian Ocean's shifting weather patterns bring a noticeable decline in surf quality. From November through March, the average swell heights drop to 1.6–1.8m, and periods shorten to 12–13 seconds. More critically, the prevailing winds shift to a westerly quarter (W, WSW, SW), turning the offshore breeze into a frustrating onshore wind that chops up the faces. Ideal wind percentages plummet to 17–49%, meaning many days are blown out. While occasional south swell windows can still produce epic sessions, the consistency is nowhere near the dry season. Patience is key during these months.
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Conditions at G-Land in December
December: Onshore Doldrums
December is the heart of the wet season at G-Land. The average swell is 1.6m with a period of 12.6s. Swell direction remains favorable – SSW (59.5%) and SW (33.6%) – but the wind ideal percentage plummets to 20%. Westerly winds dominate (W 25.8%, WSW 18.8%, SW 9.8%), creating rough, onshore conditions that spoil many swells. Short periods and choppy waves are common. The rare windows of east‑northeast wind can produce clean surf, but they are few and far between. December is best avoided unless you are prepared for marginal conditions and a lot of patience.
Average Spot conditions at G-Land in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at G-Land 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 G-Land for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at G-Land 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 G-Land.