Variable. It might be nice, it might be a bit chilly/cool. I have been where it was a bit of a roller coaster. Simply showing high/lows isn't quite a complete picture IMO, because that time of year temps tend to drop quickly in the evening or it can be a bit breezy. YMMV, but for us that typically =wearing long pants, especially at night. Some days probably swim weather, but maybe not every day.