Hawaii County Weather Forecast
Hawaii County weather: 58°F, showers. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Climate in Hawaii County month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 58° | 44° | 1,7 in | ★★★★☆ |
| February | 57° | 43° | 1,7 in | ★★★★☆ |
| March | 57° | 44° | 4,6 in | ★★★☆☆ |
| April | 58° | 45° | 3,4 in | ★★★☆☆ |
| May | 59° | 46° | 2,9 in | ★★★★☆ |
| June | 61° | 48° | 2,9 in | ★★★★☆ |
| July | 63° | 49° | 2,1 in | ★★★★☆ |
| August | 64° | 49° | 3,6 in | ★★★★☆ |
| September | 61° | 48° | 2,2 in | ★★★★☆ |
| October | 60° | 47° | 1,8 in | ★★★★☆ |
| November | 60° | 46° | 2,2 in | ★★★★☆ |
| December | 60° | 45° | 0,6 in | ★★★★☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Best time to visit Hawaii County
Go in June, July, September, October and December. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, March and April - expect the least comfortable mix of heat, cold or rain.
Recent extremes in Hawaii County
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Hawaii County compares with nearby places
Annual averages, and the difference against Hawaii County.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Hawaii (Big Island) | 0 mi | 53°F | about the same | 30 in |
| Hawaii Volcanoes National Park | 26 mi | 61°F | +40°F warmer | 51 in |
| Road to Hana | 87 mi | 71°F | +50°F warmer | 183 in |
| Haleakala National Park | 87 mi | 50°F | 35°F cooler | 121 in |
| Maui | 97 mi | 70°F | +49°F warmer | 32 in |
What to pack, what to skip
- A packable rain shell - 7 of the next 7 days carry a real chance of rain
- Avoid exposed ridgelines, small boats and rooftop viewpoints while gusts stay above 33 mph.
- If your dates are flexible, avoid January, March and April - historically the least comfortable months here.
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 58°F (14°C) with showers. Humidity is 87% and wind is 4 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 10:58 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 24, 2026 at 10:58 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
