Fourth of July weekend weather across Hawaiʻi is expected to be quiet, with conditions gradually turning less humid and few impacts anticipated for holiday events around the islands.

Fourth of July weekend weather outlook

Forecaster Genki Kino with the National Weather Service in Honolulu said in a July 2 outlook that typical summertime trade wind weather will prevail over the next few days, with trades strengthening and becoming breezy at 15 to 20 mph by July 5.

Light passing showers could brush windward and mauka areas at times, Kino said. Leeward communities should stay mostly dry.

Humidity, which has been running high lately, is forecast to trend drier starting July 3 and through the weekend. Minimum relative humidity could dip into the mid 40 percent range in leeward spots.

South swell building, advisories possible

A moderate long-period south swell will build on July 4, then peak late Sunday into July 6 near high surf advisory thresholds. Surf of 6 to 10 feet is possible along south-facing shores.

Kino said the main headlines this weekend will likely be a small craft advisory for the typical windy waters around Maui County and Hawaiʻi Island, and a potential high surf advisory for south-facing shores Sunday into Monday.

Post-tropical Douglas and where to check updates

Tropical Storm Douglas in the East Pacific transitioned to a post-tropical cyclone as of 11 p.m. July 2. The system is moving north-northwest near 8 mph, with a turn to the northwest expected later Friday and Saturday.

For the latest details on Douglas, visit the National Hurricane Center.

For local forecasts and advisories, check the National Weather Service Honolulu site and follow the office on Facebook and X. Kino added, “Have a safe and happy Fourth of July weekend!”

For more Independence Day weather details, see the Fourth of July weather forecast: Breezy trades, few showers.