Hawaii Weather Forecast for July 2025: Showers and Trade Winds

Why this matters: Staying informed about these weather patterns helps residents and tourists plan their activities, ensuring safety and preparedness for varying conditions. Farmers and those dependent on marine activities can also benefit from this information.

The weather pattern in Hawaii for July 2025 is characterized by a stable high-pressure system to the north, maintaining moderate to breezy northeast to easterly trade winds. A minor decrease in stability is expected as a weak mid to upper-level low edges in, potentially increasing shower activity, especially on Kauai and Oahu.

Hilo: Expect mostly cloudy conditions with scattered showers in the evening and numerous showers after midnight. Locally heavy rainfall is possible. Lows will range from 65 to 72 near the shore to 52 to 59 at 4000 feet.

Kona: Partly cloudy with isolated showers. Lows around 73 near the shore to 50 to 55 near 5000 feet.

Waimea: Mostly cloudy in the evening, becoming partly cloudy with scattered showers. Lows 64 to 72 near the shore to 56 to 64 near 3000 feet.

Kohala: Mostly cloudy in the evening, becoming partly cloudy with scattered showers. Lows 64 to 72 near the shore to 56 to 64 near 3000 feet.

South Big Island: Partly cloudy with isolated showers in the evening. Lows around 74 near the shore to around 55 near 5000 feet.

Puna: Mostly cloudy with scattered showers in the evening and numerous showers after midnight. Locally heavy rainfall possible. Lows 65 to 72 near the shore to 52 to 59 at 4000 feet.

Waikoloa: Partly cloudy. Lows around 75 near the shore to 51 to 56 above 4000 feet.

The marine forecast indicates fresh to locally strong trades persisting through Friday, with a slight drop as a weak low-level trough moves through. A new long-period southwest swell is expected this weekend, peaking on Saturday.

What is the chance of thunderstorms this week?

** The chance of thunderstorms over the islands is low.

What kind of surf can I expect?

** South shore waves will be around 3 to 5 feet, and west shores at 2 to 4 feet. A new southwest swell will arrive this weekend.

When will the showers decrease?

** More stable summertime conditions should return late Monday.

This week in Hawaii, expect increased showers, especially on Kauai and Oahu, with moderate to breezy trade winds. Surf conditions will vary, with a new southwest swell arriving this weekend. Stay prepared for potentially heavier rainfall and adjust outdoor activities accordingly. Remember to check local forecasts for the latest updates.

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