Conditions at Tywyn in January
January: Winter's Full Force
January is Tywyn's winter zenith. The average swell height comes in at 3.6ft (1.1m), tied for the highest of the year, and the average period of 8.5s gives the waves a punchy, rideable character. The swell rose is dominated by WSW at 38.0 percent and SW at 22.7 percent, with W and WNW adding a further 18.1 percent, meaning close to four out of every five waves arrive from the preferred SW-to-WNW window. Significant winter energy appears in the 5-6.5ft (1.5-2m) classes as well, and a small but dangerous slice of the month delivers waves over 8ft (2.5m), so when the Atlantic switches on, Tywyn is fully exposed.
Wind is the main complication. The same WSW and SW quadrants are also the leading wind directions, producing onshore, rough conditions 39 percent of the time. Offshore winds from NE, ENE, E and ESE make up only a small share, and truly ideal conditions clock in at 11 percent. Average air temperatures sit at 6.4°C, water temp drops to 7.8°C, and 3.55 mm/day of precipitation keeps the coastline wet and raw. Catch a post-cold-frontal easterly and Tywyn can offer clean, sloping winter waves; otherwise, be ready to battle the westerly mush.
Average Spot conditions at Tywyn in January
Swell history for January
Wind history for January
Swell quality
Analyze the groundswell consistency at Tywyn 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 Tywyn for your next trip in January.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Tywyn 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 Tywyn.