Laredo seasonal overview
Best Surf Season (October - March)
The North Atlantic storm track aims squarely at the Bay of Biscay through autumn and winter, and Laredo feels every pulse. Average surf heights climb to 1.5-2.0m (5-7ft) between October and March, with swell periods regularly stretching past 12 seconds. The wave rose is dominated by a broad WNW/NW/NNW band, while true N/NNE/NE windows are less common but high quality. Long-period groundswell from low pressure systems moving south of Iceland or stalling near the Bay of Biscay is the main engine here. For Laredo to look its best, offshore flow from the S-SSW quadrant keeps the NE-facing beach clean; November through January see that ideal wind 48-51% of the time. Water temps range from 12.6C to 18.2C, so a solid winter wetsuit is part of the deal. When the NAO is negative or neutral, blocking Greenland highs often steer storms toward the southern Bay of Biscay, and Laredo goes from average to genuinely firing.
Fair Surf Season (April - May & September)
The shoulder months are transitional. April and May bring smaller but rideable surf, with average heights of 1.1-1.4m (4-5ft) and periods between 10.0 and 10.9s. The Atlantic still sends inconsistent northwest groundswell, but high pressure becomes more regular, and the wind blows from the ideal southern quadrant only 36-37% of the time. September marks the first real return of autumn energy: average wave size rises to 1.2m (4ft) with a 10.4s period, and the number of clean days starts to climb. These are good months for a longboard or a small-wave shortboard at Laredo, with warmer water making it easier to sit through the smaller days.
Low Surf Season (June - August)
Summer is the slowest chapter at Laredo. The Azores High locks into place over the North Atlantic, steering storm tracks to the north and leaving the Bay of Biscay on the soft, fluffy edge of the swell window. Average swell heights fall to 0.9-1.0m (3ft), and periods drop to 8.9-9.3s. Most of the energy arrives as short-period NW/NNW swell and background windswell. Thermal onshore winds, especially from the NE/ENE quadrant, are frequent, and the share of ideal offshore wind drops to only 30-31%. When a summer pulse of 1.5m (5ft) northwest swell coincides with a dawn southerly, Laredo still has fun, but this is primarily small-wave, warm-water, summer-crowd surfing.