Index: Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresInput.cs
===================================================================
diff -u -rbcaf65d1f53f270fba046eaa396d3be77bd08c0f -r1a6804681b0758a5761e39099e4b6de65f9cf4a2
--- Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresInput.cs	(.../HeightStructuresInput.cs)	(revision bcaf65d1f53f270fba046eaa396d3be77bd08c0f)
+++ Ringtoets/HeightStructures/src/Ringtoets.HeightStructures.Data/HeightStructuresInput.cs	(.../HeightStructuresInput.cs)	(revision 1a6804681b0758a5761e39099e4b6de65f9cf4a2)
@@ -19,6 +19,7 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using Core.Common.Base.Data;
 using Ringtoets.Common.Data.Probabilistics;
 using Ringtoets.Common.Data.Structures;
@@ -62,7 +63,12 @@
             }
             set
             {
-                deviationWaveDirection = value.ToPrecision(deviationWaveDirection.NumberOfDecimalPlaces);
+                RoundedDouble newDeviationWaveDirection = value.ToPrecision(deviationWaveDirection.NumberOfDecimalPlaces);
+                if (!double.IsNaN(newDeviationWaveDirection) && (Math.Abs(newDeviationWaveDirection) > 360))
+                {
+                    throw new ArgumentOutOfRangeException("value", RingtoetsCommonDataResources.DeviationWaveDirection_Value_needs_to_be_between_negative_360_and_positive_360);
+                }
+                deviationWaveDirection = newDeviationWaveDirection;
             }
         }