Hawaii County Climate and Average Weather
Climate of Hawaii County: average temperatures, rainfall and seasons month by month.
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).
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 |
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.
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. Around 0,5 in is forecast, which is enough to soak trails and slow traffic.
Visibility is down to 2,0 mi - use low beams and leave extra following distance. Gusts to 33 mph will push high-sided vehicles on exposed roads and bridges. 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
- 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.
Summary
Hawaii County is a county in Hawaii. Hawaii County is a county in the United States. It has a population of about 205.000.
Right now it is 58°F (14°C) in Hawaii County with showers. It feels like 57°F. Today runs from 53°F to 63°F. Chance of precipitation is 100%. Sightseeing conditions score 5.5/10 - fair - plan around the weather.
The best time to visit Hawaii County is June, July, September, October and December. The climate is temperate. January, March and April tend to be the least comfortable months. August is the warmest month with average highs near 64°F, while February is the coldest with lows near 43°F.
The closest major airport is Daniel K. Inouye International Airport (HNL), about 191 mi away. Nearby highlights include Hawaii (Big Island), Hawaii Volcanoes National Park, Road to Hana and Haleakala National Park.
In plain terms. Today is about average for August. The forecast high of 63°F is in line with the 64°F typical for this month. The best window to be outside is roughly 7 AM to 10 AM, when temperature, rain chance and wind line up best. fishing is the strongest bet in Hawaii County today at 9.6/10. Visibility is down to 2,0 mi - use low beams and leave extra following distance. Gusts to 33 mph will push high-sided vehicles on exposed roads and bridges. Wet roads are likely; braking distances roughly double in heavy rain.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Hawaii County
| Type | County |
|---|---|
| State | Hawaii |
| Country | United States |
| Continent | North America |
| Coordinates | 19°32′34.4″N 155°39′57.2″W (19.5429, -155.6659) |
| Population | 205.000 |
| Local time | 4:02 AM (UTC-10:00) |
| Best months | June, July, September, October and December |
| Climate | Temperate |
Weather map for Hawaii County
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Explore Hawaii County
Every topic we hold for this place, and the same topic for the places around it.
Climate 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 4:02 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 4:02 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
