The weather forecast for the Big Island outlines a series of conditions expected over the weekend ahead, with notable differences between areas such as Hilo, Kona, Waimea, Kohala, South Big Island, Puna, and Waikoloa.
Starting with Hilo, tonight’s conditions will be breezy and mostly cloudy with scattered showers expected. Lows will range from 63 to 70 near the shore and 51 to 58 at elevations of 4000 feet, accompanied by north winds reaching up to 20 mph. The chance of rain is estimated at 50 percent.
For Saturday, Hilo will see partly sunny skies with continued scattered showers throughout the day. Highs are predicted to be between 78 and 85 near the shore, while temperatures at 4000 feet will range from 64 to 70. North winds will diminish to about 15 mph in the afternoon, with a 50 percent chance of rain.
As Saturday night approaches, clouds will increase in Hilo with numerous showers likely after midnight. Overnight lows will remain between 63 to 69 near the shore and 51 to 58 at 4000 feet. Northeast winds could reach up to 15 mph, with rain chances rising to 70 percent.
Moving over to Kona, tonight’s weather will feature mostly cloudy conditions with isolated showers expected after midnight. A haze will linger through the night with lows around 73 near the shore, while at 5000 feet, temperatures will drop to 49 to 54. The chance of rain stands at 40 percent.
On Saturday, Kona will likely enjoy mostly sunny conditions in the morning before becoming mostly cloudy again, accompanied by scattered showers and haze. Highs will reach between 82 and 87 near the shore, and 67 at 5000 feet. Light west winds could reach speeds of 10 mph, with a 50 percent chance of rain.
Saturday night will bring mostly cloudy skies with scattered showers early, transitioning to isolated showers later. Haze will continue through the night with lows around 72 near the shore and 49 to 54 near 5000 feet. Winds will remain light, and rain chances will be around 40 percent.
In Waimea, breezy conditions are expected tonight with a mix of partly cloudy skies and isolated showers turning to mostly cloudy with scattered showers after midnight. Low temperatures will range from 61 to 70 near the shore and 54 to 62 at 3000 feet, with east winds reaching 10 to 20 mph. The chance of rain is 40 percent.
Saturday will bring mostly sunny weather, although breezy conditions will persist with scattered showers in the morning and isolated showers in the afternoon. Highs are expected to reach around 80 near the shore and between 69 and 79 at 3000 feet. East winds will remain at 10 to 20 mph, maintaining the 40 percent chance of rain.
As night falls on Saturday, Waimea will experience partly cloudy conditions initially, transitioning to mostly cloudy with scattered showers. Low temperatures will drop to around 62 to 71 near the shore and 54 to 62 at 3000 feet. Breezy conditions will continue with east winds up to 25 mph and a 50 percent chance of rain.
Kohala’s weather tonight mirrors that of Waimea, with breezy conditions, partly cloudy skies, and isolated showers becoming more scattered after midnight. Lows will range similarly, from 61 to 70 near the shore and 54 to 62 at 3000 feet. The chance of rain is at 40 percent with east winds noted.
On Saturday, Kohala will experience mostly sunny weather during the day but expect breezy conditions and scattered showers in the morning, transitioning to isolated showers later. Highs are anticipated to be around 80 near the shore and from 69 to 79 at 3000 feet, alongside east winds. The chance of rain remains at 40 percent.
By Saturday night, Kohala will continue with mostly cloudy skies and scattered showers. Initially, weather will be partly cloudy, but cloud cover is expected to increase throughout the night, with lows mirroring those of Waimea ranging between 62 to 71 near the shore and 54 to 62 at 3000 feet. Breezy conditions continue with a 50 percent chance of rain.
For the South Big Island, tonight will be breezy with mostly cloudy skies and isolated showers expected during the evening. However, skies will clear after midnight. Temperatures will range from 73 near the shore to 52 at 5000 feet. There’s a low chance of rain at 20 percent.
Saturday will see mostly sunny skies during the morning, becoming partly sunny in the afternoon. Isolated showers are possible throughout the day. Highs will reach about 86 near the shore and around 66 at 5000 feet, with east winds up to 20 mph and a continued 20 percent chance of rain.
Saturday night will mirror previous nights with breezy conditions and mostly cloudy skies at first, followed by clearing. Overnight lows will be similar to those from earlier, around 73 near the shore and 52 at 5000 feet. Haze will persist, and the chance of rain remains at 20 percent.
In Puna, the weather tonight includes breezy conditions with mostly cloudy skies and scattered showers. Lows in Puna will range from 63 to 70 near the shore and 51 to 58 at 4000 feet, with north winds reaching up to 20 mph. The rain chance is set at 50 percent.
As for Saturday, Puna will see partly sunny skies with expected scattered showers. Highs will fluctuate between 78 and 85 near the shore and from 64 to 70 at 4000 feet. North winds could shift to the northeast at speeds up to 15 mph, with rain chances remaining at 50 percent.
Saturday night in Puna will further cloud with numerous showers anticipated following scattered ones in the evening. Lows will drop to between 63 to 69 near the shore and 51 to 58 at 4000 feet, complemented by northeast winds of up to 15 mph. The chance of rain is forecasted at 70 percent.
Lastly, Waikoloa will have a clear night with breezy conditions and haze throughout. Low temperatures will hover around 73 near the shoreline and from 51 to 56 above 4000 feet, with east winds up to 20 mph.
On Saturday, Waikoloa is expected to enjoy a sunny morning, transitioning to a breezy and hazy afternoon. Highs are forecast between 83 and 91 near the shore, and 65 to 72 higher up at elevations above 4000 feet. Northeast winds may shift to the north later in the day.
As Saturday night approaches, the region will continue with clear skies and a haze overlay. Low temperatures will be similar to those earlier in the evening. East winds gusting up to 20 mph will contribute to the breezy weather.
In a broader context, the overall weather pattern reflects typical June trade wind conditions across the islands. A broad high-pressure system located north of the state is driving moderate to breezy trade winds, ensuring stable atmospheric conditions.
As weekend conditions evolve, the trade winds are expected to strengthen, particularly on Sunday as high pressure builds further north of the islands. As the trades increase, typical windward showers are anticipated to persist, particularly on the Big Island and Maui.
Looking ahead to the rest of the coming week, trade winds and the associated patterns of windward rainfall are predicted to continue. Although an upper-level low may cause localized increases in rainfall, the overall stable and dry conditions are expected to prevail, with no significant sources of additional moisture impacting the forecast.
In aviation updates, moderate to breezy trade winds will be directing low clouds and showers chiefly over the windward and mauka regions. Brief periods of lower visibility and MVFR conditions could occur overnight on the windward slopes, possibly leading to AIRMET Sierra for temporary mountain obscurations.
Outside of windward areas, VFR conditions are anticipated to persist into Saturday. However, AIRMET Tango is currently posted for moderate turbulence leeward of mountains across the islands, likely remaining in effect into the weekend.
In marine news, as high pressure builds to the north of the islands, an uptick in trade winds is also expected, particularly between Sunday and early next week. Currently, a Small Craft Advisory (SCA) is in place in the windier waters around Maui County and the Big Island, and this advisory may need expansion and extension as the conditions shift.
Surf reports indicate that south-facing shores will remain small through Saturday, although a series of small, long-period swells emerging from fetches near New Zealand will likely increase surf heights to near average levels throughout next week.
An initial increase in surf heights is expected Sunday into Monday, followed by another pulse around mid-week.
Rough surf along east-facing shores may also see a slight increase this weekend due to strengthening trade winds, while surf levels on north-facing shores are forecast to remain consistently low.
Overall, weather conditions throughout the Big Island reflect a combination of typical trade wind activity with localized weather changes influenced by elevation and geographical features.
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