The Big Island is expected to face a mix of weather conditions this evening and into Sunday, marked by cloud cover and a prevalence of showers.
Tonight, Hilo will see mostly cloudy skies with numerous rainfall occurrences starting this evening and continuing after midnight.
Temperatures will dip between 64 to 70 degrees near the shore, and 51 to 58 degrees at 4,000 feet.
Southwest winds will blow at speeds of up to 10 mph, with a 90 percent chance of rain.
On the other hand, Kona’s forecast promises a somewhat drier night with mostly cloudy skies and only isolated showers.
Haze may linger, and temperatures tonight will range from around 73 degrees near the shore to 47 to 52 degrees near 5,000 feet.
Rain chances are lower in Kona, with only a 20 percent prediction for tonight.
Moving into Sunday, Hilo is likely to remain mostly cloudy, with frequent showers early in the morning transitioning to scattered showers in the afternoon.
High temperatures will range from 79 to 85 degrees near the shore, while at 4,000 feet, temperatures will be about 67 degrees.
Easterly winds will blow up to 15 mph, maintaining a 90 percent chance of rain throughout the day.
Kona, in contrast, will continue to see mostly cloudy skies but is only forecasted to have isolated showers in the morning.
As the day progresses, scattered showers are expected in the afternoon, and hazy conditions will persist.
Sunday’s highs in Kona will reach between 84 to 90 degrees near the shore, and around 67 degrees near 5,000 feet, with the chance of rain set at 50 percent.
Sunday night in Hilo will see cloudy conditions carry through with frequent showers forecasted in the evening and transitioning to numerous showers after midnight.
Temperatures will lower to between 64 to 69 degrees near the shore and 51 to 58 degrees at higher elevations of 4,000 feet.
Northwest winds can be expected wind speeds of up to 15 mph, keeping rain chances at 90 percent.
Meanwhile, Kona’s night will be characterized by cloud cover and isolated showers with lingering haze.
Lows will remain around 73 degrees near the shore, while temperatures will drop to between 48 and 53 degrees near 5,000 feet.
With light winds, the chance of rain remains at 20 percent.
Waimea will experience similar conditions tonight, as it remains mostly cloudy and breezy.
Expect scattered showers in the evening that will likely escalate to numerous showers past midnight.
Locally, low temperatures will hover between 63 to 72 degrees near the shore and 54 to 62 degrees at 3,000 feet.
East winds are anticipated at speeds of up to 20 mph that will shift to southeast winds after midnight, with a 70 percent chance of rain.
On Sunday, Waimea’s weather will remain mostly cloudy and breezy, with numerous showers expected in the early morning, followed by scattered showers later in the day.
In the afternoon, haze is anticipated.
Temperatures are forecasted to peak at around 81 degrees near the shore and range from 71 to 78 degrees at 3,000 feet, with rain chances at 70 percent.
As evening falls, Waimea will see cloudy skies and breezy conditions alongside numerous showers in the evening and scattered showers after midnight.
Low temperatures will page at 63 to 71 near the shore to 54 to 63 degrees at 3,000 feet, with breezy east winds up to 20 mph maintaining a 70 percent chance of rain.
Kohala’s evening forecast mirrors Waimea’s with scattered showers anticipated tonight, becoming more numerous after midnight.
The temperature range will be similar, 63 to 72 degrees near the shore, and 54 to 62 degrees at 3,000 feet, with a 70 percent rain chance.
Expect warming highs around 81 degrees near the shore as well.
Moving further south to South Big Island, minor variations come into play.
Tonight promises a breezy atmosphere with mostly cloudy conditions and isolated showers along with prevalent haze.
Lows near the shore are forecasted to around 73 degrees, decreasing to 51 degrees near 5,000 feet.
The chance of rain is lower at 20 percent.
The following day, expect similar mostly cloudy conditions with light breezes and isolated showers, while highs are expected around 86 degrees near the shore and 66 degrees near 5,000 feet.
As we transition into the evening, expect cloudy conditions on the South Big Island as well, combined with isolated showers and haze.
Nighttime lows will remain steady at around 73 degrees near the shore and drop to 52 degrees near 5,000 feet.
Puna’s weather highlights frequent showers expected this evening with a similar atmosphere to Hilo, maintaining a 90 percent chance of rain.
Early Sunday will bring more frequent showers, transitioning to scattered showers later, with highs reaching between 79 and 85 degrees near the shore and 67 degrees near 4,000 feet.
Sunday night, expect clouds to dominate with frequent showers anticipated, lowering temperatures once more between 64 to 69 degrees near the shore and 51 to 58 degrees at higher altitudes of 4,000 feet.
Finally, Waikoloa’s forecast calls for mostly cloudy skies with isolated showers tonight, transitioning into scattered showers as the early morning rolls in.
Temperature lows will be around 74 degrees near the shore, and between 50 to 55 degrees at elevations above 4,000 feet.
The chance of rain is set at 50 percent.
On Sunday, Waikoloa is expected to see partly sunny conditions in the morning before becoming cloudy once again, with scattered showers and persistent haze.
Daytime highs will range from 84 to 89 near the shore, with cooler temperatures (64 to 71 degrees) above 4,000 feet, and rain chances pegged at 50 percent.
As night approaches, cloudy weather and scattered showers will prevail.
Lows will remain consistent, around 74 degrees near the shore and between 51 to 56 degrees above the 4,000 feet mark, with southeast winds at 15 mph and the 50 percent rain chance.
The weather synopsis indicates moderate to breezy trade winds shifting into an east-southeast direction this weekend due to a broad surface trough formation far northwest of the islands.
This increase in moisture and instability is likely to result in enhanced showers primarily over the western end of the state as the trough influences the weather through tonight into Monday.
However, the forecast suggests a return to breezy and drier conditions as the week progresses, with a typical easterly trade wind pattern expected to re-emerge by Monday night.
As the high to the northeast strengthens and interacts with the trough, wind directions will also veer, affecting various islands.
The aviation sector has released an AIRMET Tango advisory due to potential moderate turbulence expected below 7,000 feet south through the west of mountains throughout the region.
As the forecast continues, low clouds and showers are expected to fill in overnight, leading to possible MVFR ceilings across windward areas.
In marine forecasts, moderate to strong trade winds shifting towards an east-southeast direction are expected as a trough forms, which is likely to shift back to a typical easterly direction as the trough moves westward.
A Small Craft Advisory is currently in place until 6 AM HST Monday, covering areas such as Maui County’s windward waters and the Big Island’s windward and leeward waters.
A northwest swell is expected to peak, resulting in surf heights well above the seasonal average, while south-facing shores will see a mix of small background swells followed by a late Tuesday to Wednesday swell, increasing surf conditions.
Expect east-facing shore surf to gradually build to above seasonal averages early next week due to freshening trades.
In summary, the forecast for the Big Island this weekend is marked by cloudiness and numerous showers, particularly for Hilo and Puna, while other areas like Kona may experience a slightly drier atmosphere, yet still expect sporadic showers.
image source from:https://bigislandnow.com/2025/05/31/hawaii-county-weather-forecast-for-june-01-2025/