holland has a sea climate, this means the the temperature in the summer is not too hot, because of the cold sea water cooling it. In the winter the temperature is keeped reasonable high, because the warm golfstream is warming the air. This means out temperature usually doesn't drop more than minium 10 celcius at night in the winter ( although there has been places where the temperature has dropped to minum 20 degrees celcius locally at night ) and the summer temperature doesn't go higher than 35 degrees in the summer. Average temperature in the winter is usually higher than 0 degree celsius and the avergae summer temperature is about 25.

Personnaly i wouldn't carry 8 KG of emergency kit, in the dutch terrain, because of the short distances, well reception and many other visiters on pretty much every piece of "wilderness".