Hawaii (Big Island) Weather Forecast
Hawaii (Big Island) weather: 56°F, mainly clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Will it rain in Hawaii (Big Island)?
Yes - rain is likely in Hawaii (Big Island) today.
A 100% chance means rain is expected over most of the area. Plan indoor alternatives.
Over the next 7 days, about 5,3 in of precipitation is forecast, with the wettest days falling on Thu, Fri, Sat, Sun, Mon, Tue and Wed.
The next 7 days carry about 6.3 times a normal week's rain for August (5,3 in against 0,8 in).
16-day forecast for Hawaii (Big Island)
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Thu, Aug 20 | 🌧️ Heavy drizzle | 62° / 53° | 100% · 0,1 in | 12 mph | 10 |
| Fri, Aug 21 | 🌧️ Showers | 62° / 51° | 100% · 0,4 in | 9 mph | 9 |
| Sat, Aug 22 | ☁️ Overcast | 67° / 54° | 94% | 22 mph | 10 |
| Sun, Aug 23 | ⛈️ Thunderstorm | 59° / 55° | 100% · 2,2 in | 19 mph | 6 |
| Mon, Aug 24 | ⛈️ Thunderstorm | 60° / 54° | 100% · 1,2 in | 7 mph | 3 |
| Tue, Aug 25 | ⛈️ Thunderstorm | 60° / 53° | 100% · 1,1 in | 10 mph | 8 |
| Wed, Aug 26 | 🌦️ Drizzle | 59° / 51° | 90% · 0,2 in | 9 mph | 8 |
| Thu, Aug 27 | 🌦️ Light drizzle | 57° / 50° | 90% · 0,0 in | 9 mph | 8 |
| Fri, Aug 28 | 🌦️ Light drizzle | 55° / 51° | 98% · 0,1 in | 9 mph | 10 |
| Sat, Aug 29 | 🌦️ Light drizzle | 56° / 52° | 100% · 0,1 in | 10 mph | 10 |
| Sun, Aug 30 | 🌦️ Light drizzle | 60° / 53° | 97% · 0,0 in | 12 mph | 10 |
| Mon, Aug 31 | ☁️ Overcast | 60° / 53° | 95% | 11 mph | 10 |
| Tue, Sep 1 | 🌦️ Light drizzle | 61° / 52° | 100% · 0,0 in | 13 mph | 0 |
| Wed, Sep 2 | 🌤️ Mainly clear | 62° / 52° | 98% | 12 mph | 9 |
| Thu, Sep 3 | 🌦️ Light drizzle | 63° / 57° | 99% · 0,2 in | 16 mph | 7 |
| Fri, Sep 4 | 🌦️ Light drizzle | 61° / 55° | 74% · 0,1 in | 11 mph | 8 |
What this means for Hawaii (Big Island)
Today is about average for August. The forecast high of 62°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 1,0 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.
What to pack, what to skip
- A packable rain shell - 7 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid January, March and April - historically the least comfortable months here.
See the Hawaii (Big Island) forecast by time range
Hawaii (Big Island) weather - more answers
Explore Hawaii (Big Island)
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Frequently asked questions
Where is Hawaii (Big Island)?
Hawaii (Big Island) is an island in Hawaii. Its coordinates are 19.5429, -155.6659. It lies in North America.
What is the weather like in Hawaii (Big Island) right now?
It is currently 56°F (13°C) with mainly clear. Humidity is 98% and wind is 3 mph.
When is the best time to visit Hawaii (Big Island)?
June, July, September, October and December offer the most comfortable conditions in Hawaii (Big Island), which has a temperate climate. January, March and April are usually the hardest months for outdoor plans.
What time zone is Hawaii (Big Island) in?
Hawaii (Big Island) observes Pacific/Honolulu (UTC-10:00). The local time is 8:44 PM.
What is the nearest airport to Hawaii (Big Island)?
The closest airports are Daniel K. Inouye International Airport (HNL), 191 mi away.
What are the top things to do in Hawaii (Big Island)?
Popular options include Hawaii Volcanoes National Park, Road to Hana, Haleakala National Park, Maui, Waikiki Beach and Pearl Harbor National Memorial.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (islands) - 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 20, 2026 at 8:44 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
