So I live in Europe and have a 90 day holiday booked to the United States. I know the value of the euro relative to the dollar is low - and getting lower. I will be gone in the three summer months of this year. Is it worth exchanging my euro amounts for dollars now ? Or waiting, in case the exchange rate climbs upward in my favour again?
You are asking us to predict the future price in the short term since you are probably going to your holiday soon ?
I would advise getting some of the Dollar you need now and the rest before you leave not to suffer a big difference compared to if you bought only now or when you leave.
You should try to find the cheapest Dollar by finding the best way to exchange your Euro for Dollars.