Islands are usually 5–10°F cooler than the main park.

Yes, the mist and wind drop the temperature noticeably. Evaporative cooling from the water and constant breeze can make those islands feel like a completely different climate.

If the main park is 80°F, expect the islands to be in the mid-70s. Wind chill drops it another few degrees. The mist adds a damp chill that feels colder than the number suggests.

That temperature gap widens on hot, still days. The islands get the breeze; the main area bakes. And if there’s fog or heavy mist rolling in, add another 5°F difference.

Pack a light layer if you’re heading out. You won’t regret it.