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                                        Biarritz - La Grande Plage Vue du Phare et de la Roche plate
                                            
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| Air temperatureAir temp. (°C) | 11° | 11° | 11° | 13° | 15° | 17° | 18° | 20° | 22° | 21° | 21° | 20° | 20° | 20° | 20° | 20° | 21° | 21° | 21° | 21° | 21° | 21° | 21° | 21° | 21° | 21° | 20° | 20° | 20° | 20° | 21° | 21° | 22° | 22° | 21° | 21° | 21° | 20° | 19° | 19° | 18° | 18° | 18° | 18° | 17° | 17° | 17° | 16° | 16° | 16° | 16° | 16° | 17° | 17° | 16° | 16° | 15° | 15° | 14° | 14° | 14° | 15° | 15° | 15° | 15° | 15° | 14° | 14° | 14° | 13° | 12° | 11° | 11° | 11° | 11° | 12° | 13° | 14° | 15° | 17° | 18° | 17° | 16° | 15° | 15° | 14° | 14° | 14° | 14° | 13° | 13° | 13° | 13° | 13° | 13° | 12° | 12° | 13° | 13° | 13° | 13° | 13° | 13° | 13° | 13° | 13° | 13° | 13° | 13° | 13° | 13° | 13° | 
| Water temperatureWater temp. (°C) | 17° | 17° | 17° | 17° | 17° | 17° | 18° | 18° | 18° | 18° | 18° | 18° | 18° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 17° | 
| Wind (kmh) | 6.7 | 6.3 | 5.9 | 6.2 | 6.5 | 6.7 | 9.5 | 12.4 | 15.2 | 15.6 | 16 | 16.4 | 20.3 | 24.3 | 28.2 | 28.9 | 29.5 | 30.1 | 28.2 | 26.4 | 24.4 | 25.3 | 26.2 | 27.1 | 26.7 | 26.3 | 26 | 25.8 | 25.7 | 25.6 | 22.3 | 19 | 15.8 | 15.3 | 14.9 | 14.5 | 15.2 | 15.9 | 16.7 | 16.6 | 16.5 | 16.4 | 12.5 | 8.5 | 4.5 | 8.8 | 13.1 | 17.5 | 15.7 | 14 | 12.3 | 14.5 | 16.7 | 18.9 | 19.2 | 19.5 | 19.8 | 22.4 | 25.1 | 27.8 | 26.1 | 24.4 | 22.7 | 20.9 | 19 | 17.2 | 15.1 | 13 | 11 | 10.3 | 9.7 | 9 | 8.9 | 8.6 | 8.5 | 8.3 | 8.1 | 8 | 8.4 | 8.7 | 9.1 | 9.2 | 9.4 | 9.5 | 8.2 | 6.8 | 5.5 | 4.8 | 4.1 | 3.4 | 4.2 | 5 | 5.8 | 5.8 | 5.7 | 5.7 | 11.5 | 17.3 | 23.1 | 21.9 | 20.7 | 19.4 | 19.3 | 19.1 | 18.9 | 17.7 | 16.5 | 15.2 | 12.4 | 9.6 | 6.8 | 6.2 | 
| Gust (kmh) | 11 | 11 | 11 | 20 | 20 | 20 | 27 | 27 | 27 | 30 | 30 | 30 | 51 | 51 | 51 | 55 | 55 | 55 | 46 | 46 | 46 | 49 | 49 | 49 | 49 | 49 | 49 | 52 | 52 | 52 | 38 | 38 | 38 | 31 | 31 | 31 | 33 | 33 | 33 | 29 | 29 | 29 | 32 | 32 | 32 | 32 | 32 | 32 | 23 | 23 | 23 | 40 | 40 | 40 | 42 | 42 | 42 | 55 | 55 | 55 | 55 | 55 | 55 | 42 | 42 | 42 | 32 | 32 | 32 | 20 | 20 | 20 | 19 | 19 | 19 | 20 | 20 | 20 | 22 | 22 | 22 | 22 | 22 | 22 | 16 | 16 | 16 | 12 | 12 | 12 | 11 | 11 | 11 | 13 | 13 | 13 | 47 | 47 | 47 | 42 | 42 | 42 | 45 | 45 | 45 | 36 | 36 | 36 | 30 | 30 | 30 | 22 | 
| Swell (m) | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.4 | 1.5 | 1.5 | 1.6 | 1.6 | 1.7 | 1.7 | 1.7 | 1.7 | 1.6 | 1.6 | 1.6 | 1.6 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.6 | 1.8 | 2 | 2.2 | 2.3 | 2.4 | 2.5 | 2.8 | 3 | 3.3 | 3.2 | 3.1 | 2.9 | 2.8 | 2.7 | 2.6 | 2.5 | 2.4 | 2.3 | 2.2 | 2.1 | 2 | 1.9 | 1.8 | 1.8 | 1.7 | 1.6 | 1.6 | 1.5 | 1.5 | 1.5 | 1.5 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.5 | 1.5 | 1.7 | 1.8 | 2 | 1.9 | 1.9 | 1.8 | 2.1 | 
| Swell period (s) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 11 | 10 | 8 | 9 | 11 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 14 | 15 | 17 | 18 | 20 | 18 | 16 | 15 | 15 | 15 | 15 | 13 | 12 | 10 | 12 | 13 | 14 | 13 | 11 | 10 | 11 | 
| Cloud coverCloud (%) | 52% | 48% | 100% | 100% | 100% | 76% | 91% | 65% | 49% | 74% | 100% | 61% | 60% | 70% | 74% | 62% | 48% | 57% | 50% | 100% | 98% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 0% | 57% | 99% | 96% | 100% | 100% | 98% | 100% | 100% | 100% | 99% | 100% | 94% | 92% | 92% | 92% | 92% | 92% | 92% | 92% | 85% | 78% | 71% | 79% | 87% | 96% | 74% | 53% | 32% | 54% | 77% | 99% | 96% | 93% | 91% | 90% | 89% | 89% | 92% | 96% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 100% | 99% | 99% | 98% | 54% | 27% | 1% | 11% | 21% | 30% | 33% | 36% | 39% | 29% | 
| Humidity (%) | 84% | 81% | 78% | 70% | 47% | 39% | 35% | 35% | 33% | 32% | 37% | 39% | 38% | 36% | 38% | 39% | 36% | 35% | 35% | 35% | 35% | 35% | 35% | 36% | 33% | 36% | 35% | 32% | 32% | 34% | 40% | 51% | 59% | 65% | 42% | 43% | 51% | 61% | 68% | 56% | 61% | 61% | 67% | 66% | 72% | 72% | 65% | 74% | 80% | 78% | 73% | 72% | 83% | 85% | 85% | 86% | 87% | 85% | 78% | 72% | 77% | 82% | 87% | 86% | 85% | 85% | 84% | 84% | 83% | 86% | 89% | 92% | 88% | 84% | 80% | 77% | 73% | 70% | 67% | 64% | 62% | 68% | 73% | 79% | 80% | 81% | 82% | 85% | 88% | 91% | 91% | 92% | 93% | 93% | 92% | 91% | 90% | 90% | 89% | 88% | 87% | 86% | 79% | 78% | 76% | 78% | 80% | 82% | 82% | 82% | 82% | 83% | 
| Pressure (hPa) | 1019 | 1019 | 1019 | 1019 | 1018 | 1017 | 1017 | 1017 | 1016 | 1016 | 1016 | 1016 | 1016 | 1015 | 1015 | 1015 | 1015 | 1014 | 1014 | 1013 | 1013 | 1012 | 1012 | 1012 | 1012 | 1012 | 1012 | 1012 | 1011 | 1010 | 1010 | 1009 | 1009 | 1009 | 1009 | 1009 | 1008 | 1008 | 1007 | 1007 | 1007 | 1007 | 1007 | 1006 | 1006 | 1007 | 1007 | 1008 | 1009 | 1009 | 1010 | 1010 | 1011 | 1011 | 1011 | 1012 | 1012 | 1013 | 1013 | 1014 | 1014 | 1015 | 1015 | 1015 | 1015 | 1015 | 1015 | 1015 | 1015 | 1015 | 1015 | 1015 | 1015 | 1015 | 1015 | 1014 | 1014 | 1014 | 1013 | 1013 | 1013 | 1013 | 1013 | 1014 | 1014 | 1014 | 1014 | 1014 | 1014 | 1013 | 1013 | 1012 | 1012 | 1012 | 1012 | 1012 | 1013 | 1014 | 1014 | 1014 | 1015 | 1015 | 1015 | 1016 | 1016 | 1017 | 1017 | 1018 | 1018 | 1019 | 1019 | 1020 | 
| PrecipitationPrecip. (mm/h) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.2 | 0.4 | 0.6 | 0.4 | 0.2 | 0 | 0.2 | 0.3 | 0.5 | 0.3 | 0.2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.3 | 0.6 | 0.8 | 0.9 | 0.9 | 1 | 0.7 | 0.4 | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 | 0.2 | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.4 | 0.4 | 0.4 | 0.5 | 0.5 | 0.4 | 0.2 | 0 | 0.3 | 0.5 | 0.7 | 0.9 | 1.2 | 1.4 | 1.6 | 1.8 | 2 | 1.6 | 1.2 | 0.7 | 0.7 | 0.6 | 0.5 | 0.4 | 
| Tides | 
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               09h04 
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               15h22 
                  96                  | 
                         
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               21h29 
                                   | 
                         
               | 
                         
               | 
                         
               | 
                         
               | 
                         
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               03h46 
                  101                  | 
                         
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               | 
                         
               | 
                         
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               09h49 
                                   | 
                         
               | 
                         
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               | 
                         
               | 
                         
               | 
                         
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               16h07 
                  105                  | 
                         
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               | 
                         
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               22h11 
                                   | 
                         
               | 
                         
               | 
                         
               | 
                         
               | 
                         
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               04h29 
                  107                  | 
                         
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               10h33 
                                   | 
                         
               | 
                         
               | 
                         
               | 
                         
               | 
                         
               | 
                         
               16h52 
                  108                  | 
                         
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               | 
                         
               22h55 
                                   | 
                         
               | 
                         
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               | 
                         
               | 
                         
               | 
                         
               05h12 
                  107                  | 
                         
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               | 
                         
               | 
                         
               11h19 
                                   | 
                         
               | 
                         
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               | 
                         
               | 
                         
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               17h38 
                  104                  | 
                         
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               23h39 
                                   | 
                         
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               | 
                         
               | 
                         
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               05h57 
                  101                  | 
                         
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               | 
                         
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               12h07 
                                   | 
                         
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               | 
                         
               | 
                         
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               18h26 
                  95                  | 
                         
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