Weekend Surf Forecast - Apr 15 to 17

Report Date: Friday 14 April 2017

For tips on forecasting see my book Surf Science, in paperback and animated versions Available at www.surfscience.org

Summary
Small and lumpy in most places

Best bet
Portugal

Synopsis at 00:00 UTC
Not much action on today’s chart, with a weakish low just south of Iceland, moving east and expected over Scandinavia by Sunday, which will produce some ragged surf for the far northwest. There are very weak pressure gradients over the rest of the North Atlantic. The upper airstream is moderate in strength and shifted to the north. Local pressure gradients are weak in most places.
NAO index (large positive values usually mean potentially good surf): 0 mb

Area forecasts

Southwest Wales
Friday:
Small, poor-quality windseas, driven by fresh westerly winds; wave heights struggling to reach three feet in most places
Saturday:
Very small or flat in most places, with moderate to fresh northwest winds
Sunday:
Continuing very small or flat in most places, with moderate westerly winds, perhaps gusting fresh later

North Devon and Cornwall
Friday:
Small swell, up to three feet or so at exposed spots, severely hampered in most places by fresh westerly winds
Saturday:
Winds veer northwest, moderate to fresh, and any swell is replaced by short-period windseas, around two or three feet in most places
Sunday:
Winds decrease to light northwest, leaving some tiny residual swell, around two feet or so and lumpy

South Coast of England
Friday:
Very small or flat in most places, with moderate gusting fresh west-southwest winds
Saturday:
Continuing very small or flat, with moderate west-northwest winds
Sunday:
Very small or flat practically everywhere, with moderate westerly winds

East coast of England
Friday:
Small, average-quality north swell, up to about three feet at northerly exposures, with fresh gusting strong westerly winds
Saturday:
The north swell becomes lumpy but wave heights pick up to around four or five feet at exposed spots, with fresh gusting strong west-northwest winds
Sunday:
Peaky residual swell, around three or four feet at northerly exposures, with light northwest winds veering north later

North Coast of Scotland
Friday:
Poor quality west and northwest swells, up to four or five feet at exposed spots, with fresh westerly winds, gusting strong later
Saturday:
Winds pick up to strong to gale-force northwest and wave heights increase to a very lumpy eight to ten feet
Sunday:
Lumpy residual swell, around five feet or so at exposed spots, with local windseas generated by fresh northwest winds, backing west later

Northwest Ireland
Friday:
Average to poor quality swell, up to about five feet at westerly exposures, smaller elsewhere, with local windseas generated by fresh west-northwest winds
Saturday:
The swell becomes more solid, perhaps reaching eight feet at exposed spots in the north of the area, but still with lumpy conditions in fresh west-northwest winds
Sunday:
Wave heights drop to around five or six feet and the swell remains lumpy, with strong northwest winds at first, becoming moderate north later

Southwest Ireland
Friday:
Poor-quality mixed swell and windseas, around four or five feet at exposed spots, with fresh westerly winds
Saturday:
The swell becomes more solid, up to six feet and more lined up, but still mixed with local windseas generated by fresh west-northwest winds
Sunday:
Wave heights drop to around four or five feet at exposed spots, and conditions remain lumpy, with moderate west-northwest winds, gusting fresh at first

Southwest France
Friday:
Small, weak swell, around three feet or so, with light northwest winds becoming moderate later
Saturday:
The small swell continues, averaging around two or three feet, with light to moderate westerly winds, veering northwest later
Sunday:
A more solid pulse of swell arrives during the day, still only about three feet but more lined up, with light becoming moderate northerly winds

North coast of Spain – east of Gijón
Friday:
Small, average-quality swell, around three feet or so at exposed spots, with light northerly winds, perhaps moderate later
Saturday:
The swell drops, struggling to reach three feet in most places, and winds are light northerlies
Sunday:
A more lined up swell arrives during the day, still only about three feet, and hampered in many places by moderate perhaps fresh northeast winds

North coast of Spain – west of Gijón
Friday:
Small, weak swell, around two or three feet at exposed spots, but fairly clean with windless conditions then very light northerlies
Saturday:
The small swell continues, struggling to exceed three feet practically everywhere, with light northeast winds becoming moderate to fresh in the afternoon
Sunday:
A more lined-up swell arrives, but mixed with a short-period northeast swell; wave heights around three feet on average, with moderate to fresh northeast winds

Northwest Galicia
Friday:
Small, bumpy swell, around three feet at exposed spots, with moderate southwest winds veering west in the afternoon
Saturday:
The small swell continues, around three feet at exposed spots, and winds pick up to fresh or strong north-easterlies
Sunday:
Continuing small and fairly weak, around three feet on average, with light easterly winds at first becoming light or moderate northeast later

Portugal – north of Lisbon
Friday:
Small, average-quality swell, around three feet or so, hampered in many places by moderate perhaps fresh northwest winds
Saturday:
The small swell continues, around three feet or so, with moderate northerly winds, becoming fresh in the afternoon
Sunday:
Continuing small and lumpy, around three feet at exposed spots, with light northerly winds increasing moderate perhaps fresh by afternoon

Portugal – south of Lisbon
Friday:
Smallish, quite good-quality swell but hampered by winds picking up to fresh north-westerlies in the afternoon; wave heights around three feet or so
Saturday:
The swell drops to below three feet in most places, but is clean in the morning with windless conditions, becoming moderate or fresh northwest by afternoon
Sunday:
Continuing small, around two to three feet on average, with windless conditions in the morning and moderate perhaps fresh north-westerlies in the afternoon