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Heavy rain is moving across Oʻahu this morning with rates hitting one to two inches per hour, and it'll keep going through this afternoon. Flash flooding is the main threat—windward and interior valleys are getting hit hardest. A Flash Flood Watch is in effect, so avoid driving through flooded roads.

The rain pulls back Friday with showers becoming scattered and lighter. By Saturday, trade winds settle back to normal and you'll see mostly dry conditions. The humidity that's soaking everything right now drops to seasonal levels by Saturday night.

If you're planning beach time or outdoor activities, Friday afternoon or Saturday will be much better calls than today.

Oahu's getting hammered with heavy rain through this afternoon—rates locally hitting 1 to 2 inches per hour, with flash flooding the main threat on windward and interior slopes. Maui may see isolated heavy downpours late Thursday and Friday afternoon, mainly over interior areas. By Saturday, trade winds return to normal and conditions dry out. Saturday and Sunday stay mostly dry with only scattered afternoon showers possible over Maui.

North and west shores will have modest swell through the weekend; south-facing beaches stay small. Wait until Friday or Saturday for beach time—that's when conditions improve.

Heavy rain with thunderstorms is hitting Oahu this morning and will persist through this afternoon, with rain rates locally reaching one to two inches per hour. Flash flooding is the main threat, especially on windward and interior slopes. The Big Island could see isolated heavy downpours through Friday afternoon, mainly over windward and interior areas. By Saturday, trade winds return to normal and conditions dry out—mostly dry through Sunday with only isolated afternoon showers possible.

Friday or Saturday will offer much better conditions for beach and outdoor time.

Kauaʻi's rain has already moved out this morning, with drier air settling in. Scattered showers will become more isolated by Friday. Heavy downpours are still possible late Thursday and Friday afternoon, mainly over Oahu and the other islands. By Saturday, normal trade winds return and the air dries out noticeably. North and west shores will pick up modest swell through the weekend; southern beaches stay small. Plan your beach time for Saturday or Sunday when conditions stabilize.