Hawaii County Weather Forecast
Hawaii County weather: 55°F, clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Risk assessment for Hawaii County
Derived from the current forecast window - not an official warning.
Peak gusts of 33 mph and 2 thunderstorm days in the next 16 days.
Wettest single day forecast at 2,0 in, 6,4 in across the window. Flash flooding risk rises sharply above 50 mm in a day.
Active alerts for Hawaii County
Flood Watch issued August 22 at 3:06AM HST until August 24 at 6:00PM HST by NWS Honolulu HI
Issued by NWS Honolulu HI
16-day forecast for Hawaii County
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Fri, Aug 21 | 🌧️ Showers | 63° / 51° | 100% · 0,3 in | 11 mph | 9 |
| Sat, Aug 22 | ☁️ Overcast | 66° / 55° | 98% | 22 mph | 10 |
| Sun, Aug 23 | ⛈️ Thunderstorm | 62° / 54° | 100% · 1,1 in | 19 mph | 3 |
| Mon, Aug 24 | ⛈️ Thunderstorm | 58° / 55° | 100% · 2,0 in | 6 mph | 5 |
| Tue, Aug 25 | 🌧️ Showers | 59° / 54° | 100% · 0,6 in | 10 mph | 5 |
| Wed, Aug 26 | 🌦️ Light drizzle | 59° / 51° | 95% · 0,1 in | 11 mph | 8 |
| Thu, Aug 27 | 🌦️ Light drizzle | 58° / 50° | 87% · 0,0 in | 11 mph | 8 |
| Fri, Aug 28 | 🌦️ Light drizzle | 56° / 52° | 88% · 0,0 in | 10 mph | 9 |
| Sat, Aug 29 | ⛅ Partly cloudy | 57° / 52° | 87% | 11 mph | 10 |
| Sun, Aug 30 | ☁️ Overcast | 57° / 50° | 92% | 11 mph | 10 |
| Mon, Aug 31 | 🌧️ Heavy drizzle | 56° / 50° | 96% · 0,3 in | 12 mph | 10 |
| Tue, Sep 1 | 🌦️ Light showers | 58° / 52° | 86% · 0,8 in | 11 mph | 9 |
| Wed, Sep 2 | 🌦️ Light showers | 57° / 50° | 97% · 0,6 in | 12 mph | 5 |
| Thu, Sep 3 | 🌦️ Light showers | 59° / 51° | 100% · 0,4 in | 12 mph | 10 |
| Fri, Sep 4 | 🌦️ Light drizzle | 62° / 52° | 100% · 0,0 in | 11 mph | 7 |
| Sat, Sep 5 | 🌦️ Light drizzle | 65° / 51° | 84% · 0,0 in | 8 mph | 10 |
What this means for Hawaii County
Today is about average for August. The forecast high of 63°F is in line with the 64°F typical for this month.
A 100% chance means rain is expected over most of the area. Plan indoor alternatives.
Visibility is down to 0,2 mi - use low beams and leave extra following distance. Wet roads are likely; braking distances roughly double in heavy rain.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 39°F - an unusually even climate through the year.
See the Hawaii County forecast by time range
Hawaii County weather - more answers
Explore Hawaii County
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Hawaii County?
Hawaii County is a county in Hawaii. Its coordinates are 19.5429, -155.6659. It lies in North America.
What is the weather like in Hawaii County right now?
It is currently 55°F (13°C) with clear. Humidity is 59% and wind is 6 mph.
When is the best time to visit Hawaii County?
June, July, September, October and December offer the most comfortable conditions in Hawaii County, which has a temperate climate. January, March and April are usually the hardest months for outdoor plans.
What time zone is Hawaii County in?
Hawaii County observes Pacific/Honolulu (UTC-10:00). The local time is 4:41 AM.
How many people live in Hawaii County?
Hawaii County has a population of approximately 205.000.
What is the nearest airport to Hawaii County?
The closest airports are Daniel K. Inouye International Airport (HNL), 191 mi away.
What are the top things to do in Hawaii County?
Popular options include Hawaii (Big Island), Hawaii Volcanoes National Park, Road to Hana, Haleakala National Park, Maui and Waikiki Beach.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (us-counties) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 22, 2026 at 4:41 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
