Hawaii (Big Island) Weather Forecast
Hawaii (Big Island) weather: 59°F, clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
14-day forecast for Hawaii (Big Island)
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Wed, Sep 16 | 🌦️ Drizzle | 63° / 51° | 100% · 0,1 in | 12 mph | 10 |
| Thu, Sep 17 | ⛈️ Thunderstorm | 61° / 53° | 100% · 1,9 in | 9 mph | 9 |
| Fri, Sep 18 | ⛈️ Thunderstorm | 62° / 52° | 100% · 0,7 in | 10 mph | 9 |
| Sat, Sep 19 | 🌦️ Light drizzle | 62° / 52° | 97% · 0,0 in | 10 mph | 9 |
| Sun, Sep 20 | 🌦️ Light drizzle | 61° / 54° | 100% · 0,0 in | 10 mph | 9 |
| Mon, Sep 21 | ☁️ Overcast | 62° / 53° | 95% | 11 mph | 9 |
| Tue, Sep 22 | 🌦️ Drizzle | 61° / 53° | 96% · 0,1 in | 11 mph | 7 |
| Wed, Sep 23 | 🌦️ Drizzle | 60° / 55° | 98% · 0,4 in | 7 mph | 2 |
| Thu, Sep 24 | 🌦️ Light showers | 59° / 56° | 82% · 1,0 in | 5 mph | 2 |
| Fri, Sep 25 | 🌦️ Light showers | 58° / 54° | 82% · 0,6 in | 9 mph | 6 |
| Sat, Sep 26 | ☁️ Overcast | 59° / 52° | 85% | 11 mph | 10 |
| Sun, Sep 27 | 🌤️ Mainly clear | 59° / 51° | 80% | 11 mph | 9 |
| Mon, Sep 28 | 🌦️ Drizzle | 55° / 52° | 66% · 0,1 in | 8 mph | 9 |
| Tue, Sep 29 | 🌦️ Light drizzle | 58° / 51° | 57% · 0,0 in | 11 mph | 10 |
The two-week trend
Cooling. The second half of the window averages 35°F cooler than the days immediately ahead.
The window averages 60°F against a September normal of 61°F - right on average.
The next 7 days carry about 5.4 times a normal week's rain for September (2,8 in against 0,5 in).
What this means for Hawaii (Big Island)
Today is about average for September. The forecast high of 63°F is in line with the 61°F typical for this month.
A 100% chance means rain is expected over most of the area. Plan indoor alternatives.
Visibility is down to 0,9 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 March, April and August - 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)
Every topic we hold for this place, and the same topic for the places around it.
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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 59°F (15°C) with clear. Humidity is 63% and wind is 10 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. March, April and August 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 7:44 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 September 16, 2026 at 7:44 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
