Hawaii County will see scattered showers and a 40% chance of rain from night into the evening of September 12, 2026. Detailed temperature, wind and precipitation data are provided for the Big Island’s key regions.

  • Hilo and Puna face a 40% rain chance tonight
  • Kona expects sunny morning, light showers (20%) in the afternoon
  • Coastal temps 68‑86°F, mountain temps 55‑71°F

Hilo – Tonight & Saturday

Tonight Hilo will be mostly cloudy with scattered showers. Low temperatures will range from 66‑73°F along the shore to 56‑61°F at 4,000 ft. Northeast winds will reach up to 10 mph before becoming light. Rain probability stands at 40%.

Saturday brings partly sunny skies with scattered showers. Highs will climb to 77‑84°F near the shore and 64‑69°F at 4,000 ft. Light winds shift to the northeast at up to 10 mph, keeping the rain chance at 40%.

Read Also:Delhi-NCR Deluge: Torrential Rains Trigger Waterlogging, Massive Traffic Jams, and House Collapses

Kona – Tonight & Saturday

This evening Kona will transition from mostly cloudy to partly cloudy. Temperatures will sit between 68‑75°F at sea level and around 56°F at 5,000 ft. Northwest winds will be up to 10 mph, easing later.

Saturday morning will be mostly sunny, turning partly sunny with isolated showers in the afternoon. Highs will reach about 86°F near the coast and 69°F at 5,000 ft. Northwest winds up to 10 mph, with a 20% rain chance.

Waimea & Kohala – Tonight & Saturday

Both areas will see a cloudy‑to‑partly‑cloudy transition tonight with isolated showers. Lows will be 66‑74°F at the shore and 59‑67°F at 3,000 ft. East winds will gust up to 10‑15 mph, and rain probability is 20%.

Saturday offers mostly sunny conditions with isolated showers. Temperatures will hover around 80°F near the coast and 67‑79°F at 3,000 ft.

Why This Matters

BozokMedia analysis shows that the slight uptick in trade winds and humidity this weekend could influence tourism activities, especially surf conditions on the windward coasts, and may affect agricultural irrigation schedules across the island.

"The brief showers on the eastern side will benefit local crops while surfers should stay alert to shifting wind patterns," says meteorologist Dr. Maria Kahane.
Did You Know?: Hawaii experiences an average of 150 rainy days per year, but most precipitation falls during nighttime hours.

Frequently Asked Questions

Is surfing safe this weekend?
Generally yes, but surfers should exercise caution in the evening as winds pick up and scattered showers develop.

Will farmers need extra irrigation?
The increased humidity and light rain should reduce the need for supplemental watering in most low‑land areas, though higher elevations may still require attention.