Conditions at Muli in January
January: The NE Monsoon's Clean Lines
January sits at the heart of the northeast monsoon, with the average swell height holding at 1.2m (4ft) and an average period of 9.7s - punchy, rideable energy. The dominant swell directions are from the ESE through SSE window, with SE (21.7%) and SSE (17.1%) leading the charge. That means the surf is arriving right on Muli's SE-facing seamounts and pretty well aligned with the optimal exposure. The wind matrix shows a strong N/NNE component (together around 38%), but the critical offshore quadrant - NNW extends 19%, NW 10%, WNW 7.2%, and W 4% - combines to keep conditions glassy nearly 56% of the time. When the offshore filter is in place, the NE monsoon trades groom the long period pulses, producing clean, 3-5ft (1-1.5m) waves with occasional bigger sets on the reefs. Air temps hold at 27.3°C (25.5-29.6°C), precipitation is 4.49 mm/day, and the water is a warm 28.8°C, so your biggest worries are sunscreen and board wax.
Average Spot conditions at Muli in January
Swell history for January
Wind history for January
Swell quality
Analyze the groundswell consistency at Muli during January. 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 Muli for your next trip in January.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Muli for January. 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 Muli.