Honolulu’s forecast shifts from showers Thursday toward sunnier conditions over the weekend, with stronger trade winds becoming a factor. Thursday carries a 70% chance of rain, an expected high near 83 degrees and possible rainfall totals of a quarter-inch to half an inch. The National Weather Service in Honolulu says the heaviest rain statewide should stay farther east, though passing showers remain possible on Oʻahu.
Rain chances ease; Friday winds pick up
Thursday night could bring scattered showers, with lows ranging from 70 to 77 degrees. Friday should be partly sunny with a high near 84; gusts could reach 21 mph as trade winds strengthen. Saturday is forecast to be mostly sunny with a high near 85 and isolated showers. Sunday should also be mostly sunny, though scattered showers remain possible and northeast winds could reach 20 mph, with gusts up to 28 mph.
The forecast continues into next week. Monday’s high is expected near 87. Isolated showers may return overnight and before noon Tuesday, followed by mostly sunny skies. These are forecast conditions, not a prediction of specific damage; exposed areas may feel windier, and loose outdoor items may need securing.
Forecast conditions are not flood maps
The forecast does not identify specific Oʻahu neighborhoods at flood risk. Residents can check property-level designations using the City and County of Honolulu’s flood-map resources. Updated FEMA Flood Insurance Rate Maps for Oʻahu took effect June 10, 2026, according to the City’s Office of Climate Change, Sustainability and Resiliency. The City’s maps show high-risk areas, but that designation is not a forecast for this week’s showers. The maps can help residents see whether a property’s designation changed.
The map information is relevant background, not evidence that the current showers will cause flooding. The City’s Resilience Office says it is supporting residents recovering from March 2026 Kona Low flooding, a separate past event that does not predict impacts from this forecast.
Past wind impacts are not a forecast
There is also a local precedent for wind-related disruption, but it should not be mistaken for a prediction about this week. In a separate Oʻahu wind event reported on Feb. 2, 2026, Hawaii News Now reported that many power outages were caused by trees blown into power lines. That report documents what happened during that earlier event; it does not establish that the forecast gusts will cause similar outages.
