As we approach Memorial Day, the weather across various regions of the Big Island exhibits a typical tropical pattern with isolated showers and a mix of sun and clouds.
Tonight in Hilo, expect mostly cloudy skies with scattered showers, particularly in the evening.
Temperatures will dip to lows between 64 to 70 degrees near the shoreline, while areas at 4000 feet may see temperatures ranging from 49 to 55 degrees.
A light northwest breeze, up to 10 mph, can also be anticipated.
There is a 50 percent chance of rain.
On Memorial Day, Hilo is forecasted to experience mostly sunny conditions in the morning, transitioning to a partly sunny outlook with isolated showers later in the day.
Temperatures will range from highs of 78 to 83 degrees near the shore and around 68 degrees at higher elevations.
The northeast winds are expected to remain gentle, at up to 10 mph, with a rain chance decreasing to 20 percent.
Monday night will bring partly cloudy conditions with isolated showers, temperatures dropping to lows between 65 to 71 degrees near the shore, and 51 to 56 degrees at 4000 feet.
East winds will continue at a gentle pace.
Meanwhile, Kona will see a similar pattern tonight with mostly cloudy skies and scattered showers early in the evening, followed by partial clearing after midnight.
Haze will linger throughout the night, contributing to slightly warmer lows around 72 degrees near the shore and a range from 47 to 53 degrees near 5000 feet.
Light winds will persist, with a rain chance of 50 percent.
On Memorial Day, Kona is expected to be partly sunny, accompanied by scattered showers and haze.
Daytime highs will reach between 84 to 89 degrees near the shore, with cooler temperatures around 68 degrees near 5000 feet.
Rain chances are lower at 40 percent, with light winds at up to 10 mph.
As the evening rolls in, Kona will return to mostly cloudy conditions, with isolated showers expected.
Overnight lows will hover around 73 degrees near the shore and between 48 to 54 degrees at higher elevations, along with light winds.
In Waimea, tonight will bring mostly cloudy skies turning to partly cloudy with isolated showers.
Temperatures will range from 62 to 71 degrees near the shore and between 53 to 61 degrees near 3000 feet.
Expect east winds up to 15 mph, with a 20 percent chance of rain.
On Memorial Day, residents in Waimea can look forward to a mostly sunny day with isolated showers.
Highs will be between 75 to 82 degrees near the shore and reach 71 to 79 degrees near 3000 feet.
An east wind up to 10 mph will accompany conditions, with a rain chance of 20 percent.
Monday night should be partly cloudy, with isolated evening showers.
Lows will range from 63 to 71 degrees near the shore and 54 to 61 degrees near 3000 feet, with gentle east winds.
The Kohala region mirrors Waimea’s forecast with mostly cloudy skies tonight, transitioning to partly cloudy conditions with isolated showers.
Expected lows in Kohala will be between 62 to 71 degrees near the shore and 53 to 61 degrees nearer to 3000 feet, with east winds up to 15 mph and a 20 percent chance of rain.
The Memorial Day forecast suggests mostly sunny weather with isolated showers, highs around 75 to 82 degrees at the shore and cooler temperatures around 71 to 79 degrees near higher elevations.
East winds will be light at up to 10 mph with a rain chance remaining at 20 percent.
Monday night expectations include partly cloudy skies and isolated evening showers, with lows similar to previous nights between 63 to 71 degrees near the shore and 54 to 61 degrees near 3000 feet.
In South Big Island, weather conditions tonight indicate mostly cloudy skies with isolated showers that will clear out to mostly clear post-midnight.
Haze will persist overnight, with lows around 72 degrees near the shore and approximately 50 degrees at 5000 feet.
Northeast winds up to 15 mph are expected alongside a 20 percent chance of rain.
As Memorial Day approaches, the weather will be mostly sunny in the morning with cloudy conditions in the afternoon and possible isolated showers.
Temperatures are forecasted to peak around 87 degrees near the shore and about 65 degrees at elevated areas, with a light breeze from the east around 15 mph and 20 percent chance of rain.
Monday night will see mostly cloudy skies with a return of isolated showers that clear to mostly clear by midnight.
Lows will align with prior forecasts at around 72 degrees near the shore and 50 degrees at 5000 feet, accompanied by northeast winds.
In Puna, the forecast aligns closely with Hilo, where tonight brings mostly cloudy skies transitioning to partly cloudy with scattered showers.
Lows will range from 64 to 70 degrees near the shore and 49 to 55 degrees at 4000 feet, complimented by northwest winds at 10 mph and a 50 percent rain chance.
On Memorial Day, a partly sunny morning will transition to a blend of sun and clouds with isolated showers, with high temperatures similar to Hilo’s forecast ranging 78 to 83 degrees near the shore and around 68 degrees at 4000 feet.
The east winds will remain light, with a low 20 percent chance of rain.
Monday night will return to mostly cloudy conditions with isolated showers, dropping to lows between 65 to 71 degrees near the shoreline and 51 to 56 degrees at 4000 feet.
East winds up to 10 mph will carry through the night.
Lastly, in Waikoloa, tonight’s weather is forecasted to be predominantly partly cloudy with a chance of isolated showers dipping into the evening.
Lows will be around 73 degrees near the shore and 50 to 55 degrees above 4000 feet amid haze throughout the night and southeast winds up to 15 mph, alongside a 20 percent chance of rain.
For Memorial Day, expect mostly sunny skies and haze, with isolated afternoon showers anticipated as temperatures soar between 83 to 90 degrees near the shore and approximately 65 to 73 degrees above 4000 feet.
Northeast winds will persist at up to 10 mph, with the rain chance holding steady at 20 percent.
Monday night in Waikoloa will provide partly cloudy skies with isolated evening showers similar to other regions, with lows around 74 degrees near the shore and 51 to 56 degrees above 4000 feet.
Light winds will continue along with a 20 percent chance of rain.
In summary, as the surface ridge north of Hawaii weakens, the trade winds will moderate over the next few days, leading to drier conditions with the likelihood of brief passing showers mainly over windward and mountainous regions during the overnight hours.
Lower humidity and more stable conditions are expected, facilitating sea breezes development later this week amid stable weather patterns, with the potential for an uptick in showers by next weekend.
Early week forecasts suggest moderate to breezy trade winds will prevail, with variation in temperature and periodic moisture changes expected as the week develops.
image source from：https://bigislandnow.com/2025/05/25/hawaii-county-weather-forecast-for-may-26-2025/
