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Hawaii Island Daily Weather Forecast for June 30th, 2021

HIRSC - Island of Hawaii Daily Weather Forecast for Wednesday, June 30th, 2021.

Published by: HIRSC - Weather Team

Happy Hump Day Wednesday (Wow, June came and went fast),

Here’s your HIRSC - Weather Team - Island of Hawaii Daily Forecast for Wednesday, June 30th, 2021:

Sunrise: 5:43 am (In Hilo) Sunset: 7:06 pm (In Kailua-Kona)

Moon Phase: Waning Gibbous (65.8%)

High Temperatures for Wednesday: 70 to 87 Low Temperatures for Wednesday: 42 to 75

Precipitation Chances (Percentage) for Hawaii Island: 20 to 70% Rainfall Accumulations: Some areas could see 1/10 up to 2/3 inch, possible in some areas.

Fire Conditions Rating for Wednesday (Relatively the Same):

- Extreme: North Hawaii and Saddle - Very High: Hāmākua Coast, Kona Coast, and South Hawaii - High: East Hawaii - Moderate: None - Low: None


For Wednesday, the trade winds are beginning to build back again, bringing with some moderate to very breezy conditions along the Hāmākua Coast, Na’alehu, and upper North Hawai regions. The rest of the island will continue to see lighter winds prevail during the afternoon and evening hours. The return of the trades means we could see an increase in windward and mauka showers over the next few days, while the Kona Coast will continue to see its normal convective weather pattern, which will continue to see elevated humidity levels, making temperatures feel a lot warmer than forecasted and sticky conditions.

The Kona Coast will continue to see a typical convective weather pattern with mostly sunny in the morning, then partly sunny with isolated showers in the afternoon, some showers could be moderate in the upper elevations. East Hawaii will see mostly sunny with scattered showers in the morning, then mostly cloudy with showers likely in the afternoon. South Hawaii will see mostly sunny skies with scattered clouds and possible isolated/scattered showers in the afternoon. North Hawaii (including the mauka and makai sections of the South and North Kohala Districts) region will see mostly sunny in the morning then becoming partly sunny with scattered showers in the afternoon, some showers at the upper elevations could be moderate. Isolated showers late in the morning, then scattered showers in the afternoon.

One weather advisory for Wednesday for the waters offshore of Hawaii Island:


* WHAT...East winds 25 knots, except north winds 25 knots in
  Maalaea Bay.

* WHERE...Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big
  Island Leeward Waters and Big Island Southeast Waters.

* WHEN...From 6 AM Wednesday to 6 PM HST Friday.

* IMPACTS...Conditions will be hazardous to small craft.


Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in these conditions.

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