Weekend Surf Forecast. Friday 21st - Sunday 23rd April.

Report Date: Friday 21 April 2017

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Summary

Small or very small in most places

Best bet

Ireland

Synopsis at 00:00 UTC

Today’s chart shows a moderate-strength low pressure system over Norway, moving steadily east, with a northerly fetch on its western flank generating some surf for the far north and northeast. The rest of the North Atlantic contains very weak pressure gradients and no swell-producing systems at the moment. There is a cut-off low west of the Azores but this is too weak and too far away to produce anything significant. The upper airstream is shifted way to the north, and local pressure gradients are weak in most areas except in northwest Iberia where there are some strong northeast trades.
NAO index (large positive values usually mean potentially good surf): -10 mb

Area forecasts

Southwest Wales Friday:
Very small or flat in most places, with light northwest winds, perhaps moderate later

Saturday:
Continuing very small or flat in most places, but perhaps reaching two feet at exposed spots in the far west, with light becoming moderate northerly winds

Sunday:
Very small or flat practically everywhere, with light then moderate westerly winds

North Devon and Cornwall Friday:
Very small or flat in most places, but a tiny swell might reach two feet at exposed spots in the far west, with light then moderate northerly winds

Saturday:
Continuing very small or flat in most places, with light to moderate north-northeast winds, perhaps becoming fresh late afternoon

Sunday:
Very small or flat practically everywhere, with windless conditions or light westerlies

South Coast of England Friday:
Very small or flat practically everywhere, with light perhaps moderate west-southwest winds

Saturday:
Very small or flat everywhere, with light southwest winds

Sunday:
Not really a wave in sight anywhere, with light southwest winds, perhaps moderate later

East coast of England Friday:
Very small or flat in most places, with fresh west-northwest winds, perhaps gusting strong

Saturday:
An average-quality north swell arrives, up to three or four feet at exposed spots, with moderate northerly winds at first, becoming light in the afternoon

Sunday:
The north swell becomes more solid, up to five feet or so at northerly exposures and quite lined-up, with moderate westerly winds, gusting fresh or strong later

North Coast of Scotland Friday:
Ragged northwest swell, mixed with windseas generated by strong northwest winds; wave heights up to eight feet or more at exposed spots

Saturday:
The swell remains lumpy and drops to around six feet, with a northerly component and slightly better conditions in fresh west-northwest winds

Sunday:
Continuing lumpy and mixed, around four or five feet on average, with strong northwest winds, but gale-force west for a while at first

Northwest Ireland Friday:
Good-quality northwest swell, up to six feet or so at exposed spots, but hampered in many places by fresh west-northwest winds

Saturday:
The swell weakens to around three or four feet on average, with light to moderate west-northwest winds

Sunday:
The swell becomes lumpy and mixed, around three feet or so with fresh westerly winds veering west-northwest later

Southwest Ireland Friday:
Good-quality northwest swell, up to five or six feet at northwest exposures, smaller elsewhere, with light northerly winds becoming moderate
later

Saturday:
The swell weakens, around three or four feet at northwest exposures, with light becoming moderate northerly winds

Sunday:
The swell continues to weaken, down to three feet or less in most places, with light then moderate north-northwest winds

Southwest France Friday:
Very small or flat in most places, with light winds from an easterly quarter, perhaps moderate later

Saturday:
A small but good-quality swell arrives, perhaps up to three feet or so around Hossegor, with light variable winds, becoming moderate northerlies late afternoon

Sunday:
The swell holds at around two to three feet, perhaps slightly bigger at swell-magnets, with windless conditions at first and light northerlies later

North coast of Spain – east of Gijón Friday:
Poor-quality short-period northeast swell, up to two or three feet and driven by fresh east-northeast winds

Saturday:
A longer-period northwest swell arrives, around three feet or so, with moderate southeast winds early morning quickly becoming moderate to fresh east-northeast

Sunday:
The swell continues, averaging around three feet, with light southeast winds in the morning and moderate to fresh north-easterlies in the afternoon

North coast of Spain – west of Gijón Friday:
Lumpy short-period northeast swell, up to three or four feet at north and northeast exposures, with light easterly winds at first becoming fresh northeast later

Saturday:
A longer-period northwest swell mixes with the residual northeast, around three or four feet on average, with windless conditions quickly becoming moderate northeast

Sunday:
The mixed swells continue, dropping to three feet or below in most places, with windless conditions in the morning and moderate northeast in the afternoon

Northwest Galicia Friday:
Very small or flat in many places, with perhaps some small, short-period swell at northwest exposures, and fresh east then northeast winds

Saturday:
A small, longer-period northwest swell arrives, up to three feet at exposed spots, with windless conditions then light westerlies

Sunday:
The small swell continues, around two or three feet on average, with light variable winds or light northerlies

Portugal – north of Lisbon Friday:
Small, mixed swell, struggling to exceed three feet in most places, with fresh to strong easterly winds, decreasing later

Saturday:
A small, longer-period swell arrives from the northwest, up to three or four feet at swell-magnets, smaller elsewhere, with moderate easterly winds, swinging north later

Sunday:
The swell weakens, but still reaches three feet or so at exposed spots, with light northerly winds, increasing fresh or strong by afternoon

Portugal – south of Lisbon

Friday:
Very small or flat in many places, with fresh to strong southeast winds, veering south during the day

Saturday:
Continuing very small and mixed, struggling to reach three feet in most places, with light easterly winds at first becoming fresh westerlies later

Sunday:
A small, longer-period northwest swell arrives, perhaps reaching three feet at northwest exposures, but hampered by moderate then fresh westerly winds