We did the Ensenada to Hawaii itinerary in April in 2001. I'd say it was 70's - we were wearing shorts. There was one cloudy breezy day where we opted for a sweatshirt. I agree the pools with the retractable roof closed are ideal on that type of day. We absolutely loved the cruise - so much that we did it again the next year, at the same time, just trying a different ship for variety! Hope you enjoyed it as much as we did. I'm curious to hear.