Flagge von Indonesia

Medewi • Statistics for December

Conditions at Medewi in December

December: Monsoon Surf and Rainy Windows

December closes the year with a classic wet-season setup. Swell remains highly directional: 86 percent SSW, 13 percent SW, and a touch of WSW, with an average height of 1.0m (3ft) and a 12.4s period. The bulk of surf is 2-5ft (0.6-1.5m), with occasional 5-6.5ft (1.5-2m) pulses from stronger SSW/SW events. The wind pattern shifts back to the W/WSW/SW quadrant, and about 41 percent of the wind distribution blows from the onshore sector. Ideal wind is only 18 percent, so quality sessions are tied to overnight and early-morning land breezes. Once the sea breeze or monsoon wind fills in, conditions can become messy. With air temps around 25.8C, water temperature at 29.3C, and 8.14mm/day of rain, pack the boardshorts and the rain jacket for December at Medewi.

Average Spot conditions at Medewi in December

Swell history for December

0 - 2
2 - 3
3 - 5
5 - 6
6 - 8
> 8 ft

Wind history for December

0 - 6.2
6.3 - 12.4
12.4 - 18.6
18.6 - 24.9
24.9 - 31.1
> 31.1 mph

Swell quality

Analyze the groundswell consistency at Medewi 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 Medewi for your next trip in December.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Medewi 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 Medewi.

Swell with good wind

Swell with good wind by size

Choose month for details