Hilo

Tonight: Mostly cloudy early in the evening then becoming partly cloudy. Scattered showers in the evening. Haze through the night. Lows 59 to 66 near the shore to 48 to 53 at 4000 feet. West winds up to 15 mph. Chance of rain 50 percent.

Monday: Sunny…breezy and haze. Highs 77 to 84 near the shore to 67 to 72 at 4000 feet. Southwest winds up to 20 mph.

Monday Night: Mostly clear. Haze. Lows 59 to 65 near the shore to 47 to 53 at 4000 feet. West winds up to 15 mph in the evening becoming light.

Kona

Tonight: Mostly clear. Isolated showers in the evening. Haze through the night. Lows around 69 near the shore to 42 to 50 near 5000 feet. Light winds. Chance of rain 20 percent.

Monday: Sunny. Highs 81 to 86 near the shore to around 68 near 5000 feet. Southwest winds up to 10 mph.

Monday Night: Mostly clear. Lows around 68 near the shore to 42 to 50 near 5000 feet. South winds up to 10 mph shifting to the northeast after midnight.

Waimea

Tonight: Partly cloudy. Scattered showers in the evening. Haze through the night. Lows 59 to 67 near the shore to 51 to 58 near 3000 feet. Southwest winds up to 15 mph. Chance of rain 40 percent.

Monday: Sunny and breezy. Isolated showers in the morning. Isolated showers late in the afternoon. Haze through the day. Highs 75 to 82 near the shore to 70 to 77 near 3000 feet. Southwest winds up to 20 mph. Chance of rain 20 percent.

Monday Night: Breezy. Mostly clear with isolated showers. Haze. Lows 59 to 67 near the shore to 51 to 58 near 3000 feet. Southwest winds up to 25 mph. Chance of rain 20 percent.

Kohala

Tonight: Partly cloudy. Scattered showers in the evening. Haze through the night. Lows 59 to 67 near the shore to 51 to 58 near 3000 feet. Southwest winds up to 15 mph. Chance of rain 40 percent.

Monday: Sunny and breezy. Isolated showers in the morning. Isolated showers late in the afternoon. Haze through the day. Highs 75 to 82 near the shore to 70 to 77 near 3000 feet. Southwest winds up to 20 mph. Chance of rain 20 percent.

Monday Night: Breezy. Mostly clear with isolated showers. Haze. Lows 59 to 67 near the shore to 51 to 58 near 3000 feet. Southwest winds up to 25 mph. Chance of rain 20 percent.

South Big Island

Tonight: Partly cloudy. Scattered showers in the evening. Haze through the night. Lows around 71 near the shore to around 48 near 5000 feet. Light winds. Chance of rain 30 percent.

Monday: Sunny. Isolated showers in the afternoon. Highs around 83 near the shore to around 66 near 5000 feet. West winds up to 15 mph increasing to 10 to 15 mph in the afternoon. Chance of rain 20 percent.

Monday Night: Mostly clear. Breezy. Lows around 69 near the shore to around 49 near 5000 feet. Northwest winds 10 to 20 mph.

Puna

Tonight: Mostly cloudy early in the evening then becoming partly cloudy. Scattered showers in the evening. Haze through the night. Lows 59 to 66 near the shore to 48 to 53 at 4000 feet. West winds up to 15 mph. Chance of rain 50 percent.

Monday: Sunny…breezy and haze. Highs 77 to 84 near the shore to 67 to 72 at 4000 feet. Southwest winds up to 20 mph.

Monday Night: Mostly clear. Haze. Lows 59 to 65 near the shore to 47 to 53 at 4000 feet. West winds up to 15 mph in the evening becoming light.

Waikoloa

Tonight: Partly cloudy. Isolated showers in the evening. Haze through the night. Lows 67 to 72 near the shore to 46 to 51 above 4000 feet. Southeast winds up to 15 mph. Chance of rain 20 percent.

Monday: Sunny and breezy. Highs around 83 near the shore to 66 to 73 above 4000 feet. Southwest winds up to 20 mph.

Monday Night: Mostly clear. Lows 66 to 71 near the shore to 45 to 51 above 4000 feet. South winds up to 15 mph.

Detailed Forecast

Synopsis

A cold front will march eastward down the island chain from late Monday afternoon onward, finally stalling out and diminishing near the Big Island by Tuesday afternoon. Southwesterly winds will strengthen through Monday with breezy to locally strong southwest winds expected by Monday afternoon. Northwesterly winds with cool and dry conditions will follow behind the frontal passage. A stronger weather disturbance could impact the state late Friday into next weekend with heavy rain and thunderstorms.

Short term update

The satellite imagery this evening shows quickly moving cloud bands just west of the islands, a good indicator of strengthening southwest winds developing ahead of the next cold front approaching the state from the northwest direction. These strong southwesterly winds may exceed our Wind Advisory thresholds on Monday over mountain ranges, and along north through east slopes of island mountains. A few shower bands are developing in the warm and unstable southwest flow ahead of the front. However, the main rainfall event will occur as the front passes eastward through each island from late Monday afternoon through Tuesday. Cool and drier northwesterly winds will blow in as the front passes through each island. Drier air will more efficiently cool off the atmosphere during the overnight hours keeping our overnight and early morning low temperatures well below normal.

Prev discussion

Issued at 355 PM HST Sun Feb 1 2026
Starting tonight, a cold front approaching the state from the northwest will cause southwesterly winds to gradually increase into Monday with breezy to strong (15 to 25 mph) southwesterly winds expected across the state by Monday afternoon. Wind gusts of 40 mph will be possible especially areas downwind of the mountain ranges. One area that could see stronger wind gusts and meet the Wind Advisory criteria will be over windward Oahu. Latest High Res models have trended stronger with the 850mb winds and is now showing anywhere from 30-40 knots at 850mb. With an inversion expected a little above the ridge tops, this should provide a favorable setup for gusty downslope winds with wind gusts of 50 mph possible Monday afternoon through the evening. Elsewhere across the state, we could see wind gusts approach the Wind Advisory threshold, but at this time the best chance seems to be over typical windward areas of Oahu.
As far as rainfall, prefrontal showers will continue to increase tonight into Monday, which should bring some passing showers focused over our typical leeward areas. The main band of moisture will be along the frontal boundary and will be short-lived with a brief period of moderate rain possible. The threat for heavy rain will be minimal due to stable conditions aloft. The front should be moving through Kauai late Monday afternoon into the evening, over Oahu on Monday night, and over Maui County Tuesday morning. The front should then dissipate around the Big Island Tuesday afternoon and evening. Behind the front, we should see cool and dry conditions with moderate northwesterly winds. Dewpoints will get down into the 50s behind the front, so Tuesday and Tuesday night should feel quite cool.
Over on the summits of Haleakala and the Big Island, upper level winds will increase Monday night and will likely reach Wind Advisory thresholds for the summits of Big Island and Haleakala. No wintry precipitation is expected with the frontal boundary due to the shallow nature of the front.
After the frontal passage, we should see fair weather conditions persist for a few days due to a surface ridge of high pressure over the state. Light winds with clear mornings and partly cloudy afternoons are expected Wednesday and Thursday.
Long range models are in pretty good agreement with an upper level trough approaching the state next weekend. At the surface, we should see a cold front approach the state late Friday into Saturday. While details still remain uncertain at this point, both the operational GFS and ECMWF and its AI models show some type of upper level cut off low developing over the state or southwest of the state. Depending on where this low develops, we could see a complex weather pattern next weekend with the threat of heavy rain and thunderstorms.

Aviation

Issued at 355 PM HST Sun Feb 1 2026
Mostly VFR with isolated MVFR in low clouds and showers through early evening, then VFR overnight. Southwest low-level flow has developed (altered locally by terrain, of course). This flow will strengthen through the night and become even stronger Monday afternoon. Cloud coverage and shower trends will increase Monday from west to east as a cold front approaches the islands. The cold front is forecast to reach PHLI around 6 PM HST, bringing gusty NW winds and showers.
No AIRMETs in effect and none are expected.

Marine

Issued at 355 PM HST Sun Feb 1 2026
A surface ridge will continue to drift southward over the islands today, leading to gentle to moderate south to southwest winds. Southwest winds will become fresh to strong late tonight and Monday as a front approaches. A Small Craft Advisory (SCA) has been issued for most waters west of the Big Island and will be in effect from midnight HST tonight through Monday night. The front will move down the island chain Monday night and Tuesday, bringing gusty winds and heavy showers. Northwest winds behind the front will diminish and shift out of the east on Wednesday, followed by a return to southerly winds Thursday. Another front will likely reach the state late Friday or Saturday.
The current west-northwest swell will continue to decline through Monday, with another round of extra-large surf due Tuesday. Surf along north and west facing shores will diminish to small heights by Monday morning, followed by an increase during the afternoon as forerunners of the next northwest swell arrive. The next northwest swell (310 to 325 degrees) will build rapidly Monday night and peak Tuesday and Wednesday as overlapping pulses pass through Hawaiian waters. Surf along most north and west facing shores will easily exceed High Surf Warning levels, with combined seas exceeding the 10 foot SCA threshold in many areas. The swell will decline Thursday and Friday, with surf falling below High Surf Advisory levels Thursday night. Another large swell is possible late Friday and Saturday.
Surf along east and south facing shores will remain small through much of the week, aside from a brief boost along south facing shores with the increase in southwest winds as the front approaches on Monday. An increase is possible along east shores next weekend.
A Coastal Flood Statement remains in effect through midday Monday, as peak monthly tides coincide with higher than predicted ocean levels. Expect minor flooding of low-lying coastal infrastructure as well as some some beach erosion during the peak high tide between midnight and sunrise Monday.

HFO Watches/Warnings/Advisories

Small Craft Advisory from midnight tonight to 6 AM HST Tuesday for Alenuihaha Channel, Kaiwi Channel, Kauai Channel, Kauai Leeward Waters, Kauai Northwest Waters, Kauai Windward Waters, Maui County Leeward Waters, Maui County Windward Waters, Oahu Leeward Waters, Oahu Windward Waters, Pailolo Channel.

Big Island Now Weather is brought to you by Blue Hawaiian Helicopters.

Check out their Big Island Helicopter Tours today!

Data Courtesy of NOAA.gov