Here is the water temp info I'm going off of. It's from the UGLOS buoy out of Holland. I'll try to insert the surface water temp graph in this post. You can see the drastic decline in temperature on the graph over the past couple days.
Water Temperature at Surface No Datasheet Water Temperature at Surface (WTMP1 ) 53.4 °F
Thermistor Temperature, depth: Datasheet Thermistor Temperature, depth: 3.28 ft. (TP001) 51.4 °F
Thermistor Temperature, depth: Datasheet Thermistor Temperature, depth: 13.12 ft. (TP003) 50.9 °F
Thermistor Temperature, depth: Datasheet Thermistor Temperature, depth: 19.69 ft. (TP005) 50.0 °F
Thermistor Temperature, depth: Datasheet Thermistor Temperature, depth: 26.25 ft. (TP007) 48.6 °F
Thermistor Temperature, depth: Datasheet Thermistor Temperature, depth: 32.81 ft. (TP009) 45.8 °F
Thermistor Temperature, depth: Datasheet Thermistor Temperature, depth: 39.37 ft. (TP0011) 41.9 °F
Thermistor Temperature, depth: Datasheet Thermistor Temperature, depth: 45.93 ft. (TP0013) 41.4 °F
Thermistor Temperature, depth: Datasheet Thermistor Temperature, depth: 52.49 ft. (TP0015) 41.2 °F
Thermistor Temperature, depth: Datasheet Thermistor Temperature, depth: 59.06 ft. (TP0017) 41.1 °F
Thermistor Temperature, depth: Datasheet Thermistor Temperature, depth: 65.62 ft. (TP0019) 41.2 °F