Honolulu started Thursday under mostly clear skies, sitting in the low 70s (about 73°F) with roughly 10 miles of visibility. A moderate northeast trade flow is sliding back into place, with the afternoon expected to peak near 83°F. Most showers should stay tucked against windward and mauka slopes before midday, while breezier stretches build in this afternoon and linger into the weekend, especially along ridges and in the channels.
Afternoon Outlook
Isolated showers are most likely before noon, then skies should open up to mostly sunny conditions with highs near 83°F, according to the National Weather Service. The odds of measurable rain sit around 20%, so most errands and outdoor plans on Oʻahu should be fine, though windward neighborhoods could catch a quick passing downpour. Overnight lows will hang in the low 70s, keeping the evening on the mild side.
Winds And Surf
Trades out of the northeast are expected around 8–13 mph today and will strengthen into the weekend, reaching the mid to upper teens with gusts into the low 20s. Small north to northwest swells will keep many north-facing shores in the waist to head high range into next week, and there are no new island wide surf advisories in place this morning. Boaters should keep an eye out for locally choppy conditions in channels and exposed bays as the trades ramp up.
Volcano Watch
Activity at Kīlauea's summit picked up early Thursday, and an Ashfall Advisory is posted until 10 AM HST Thursday for parts of the Big Island's south and southeast coasts. Residents in those areas are urged to follow local guidance. The USGS is monitoring the eruption and sharing updates for people near the summit. Honolulu is not expected to see ash, but the increased summit activity is what triggered the advisory. Travelers headed to the Big Island should be ready for short term impacts from ash and light debris downwind of the volcano.
What To Know For Your Day
On Oʻahu, you can count on a generally sunny afternoon: think light jacket in the morning, and a grab and go umbrella if you are in windward spots that tend to catch those brief showers. On the Big Island, try to limit outdoor time during any active ashfall, protect rain catchment systems, and follow any instructions from local officials. Keep tabs on updates from the National Weather Service and the USGS observatory team in case the forecast or volcanic activity changes.
