Kauai County Weather Forecast
Kauai County weather: 71°F, mainly clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Risk assessment for Kauai County
Derived from the current forecast window - not an official warning.
Peak gusts of 26 mph and 1 thunderstorm day in the next 16 days.
Wettest single day forecast at 1,9 in, 7,7 in across the window. Flash flooding risk rises sharply above 50 mm in a day.
Active alerts for Kauai County
Derived from the forecast. No official alert feed is wired for this country yet.
16-day forecast for Kauai County
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Fri, Aug 21 | 🌦️ Light showers | 79° / 65° | 63% · 0,2 in | 5 mph | 8 |
| Sat, Aug 22 | 🌦️ Drizzle | 77° / 67° | 49% · 0,3 in | 7 mph | 9 |
| Sun, Aug 23 | 🌦️ Drizzle | 75° / 66° | 51% · 0,4 in | 5 mph | 9 |
| Mon, Aug 24 | ⛈️ Thunderstorm | 72° / 67° | 100% · 1,9 in | 6 mph | 8 |
| Tue, Aug 25 | 🌧️ Showers | 72° / 67° | 94% · 1,3 in | 5 mph | 7 |
| Wed, Aug 26 | 🌦️ Light drizzle | 75° / 64° | 75% · 0,1 in | 6 mph | 8 |
| Thu, Aug 27 | 🌦️ Light drizzle | 75° / 61° | 62% · 0,1 in | 6 mph | 9 |
| Fri, Aug 28 | 🌦️ Light drizzle | 74° / 61° | 71% · 0,0 in | 7 mph | 9 |
| Sat, Aug 29 | 🌦️ Light drizzle | 74° / 63° | 82% · 0,2 in | 6 mph | 7 |
| Sun, Aug 30 | 🌧️ Heavy drizzle | 74° / 64° | 73% · 0,4 in | 7 mph | 8 |
| Mon, Aug 31 | 🌦️ Light showers | 71° / 64° | 81% · 0,9 in | 6 mph | 4 |
| Tue, Sep 1 | 🌧️ Heavy drizzle | 69° / 64° | 85% · 0,7 in | 5 mph | 8 |
| Wed, Sep 2 | 🌦️ Light drizzle | 75° / 64° | 76% · 0,1 in | 6 mph | 6 |
| Thu, Sep 3 | 🌦️ Light drizzle | 75° / 64° | 76% · 0,2 in | 5 mph | 7 |
| Fri, Sep 4 | 🌦️ Light showers | 73° / 65° | 80% · 0,7 in | 4 mph | 9 |
| Sat, Sep 5 | 🌦️ Light showers | 77° / 67° | 54% · 0,2 in | 5 mph | 7 |
What this means for Kauai County
Today is slightly warmer than average for August. The forecast high of 79°F is 4.5°F above the 75°F typical for this month.
A 63% chance means rain is expected over most of the area. Plan indoor alternatives.
Visibility is down to 0,1 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 Kauai County forecast by time range
Kauai County weather - more answers
Explore Kauai County
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Frequently asked questions
Where is Kauai County?
Kauai County is a county in Hawaii. Its coordinates are 22.0964, -159.5261. It lies in North America.
What is the weather like in Kauai County right now?
It is currently 71°F (22°C) with mainly clear. Humidity is 89% and wind is 4 mph.
When is the best time to visit Kauai County?
August offer the most comfortable conditions in Kauai County, which has a temperate climate. March, November and December are usually the hardest months for outdoor plans.
What time zone is Kauai County in?
Kauai County observes Pacific/Honolulu (UTC-10:00). The local time is 6:53 PM.
How many people live in Kauai County?
Kauai County has a population of approximately 74.000.
What is the nearest airport to Kauai County?
The closest airports are Daniel K. Inouye International Airport (HNL), 116 mi away.
What are the top things to do in Kauai County?
Popular options include Kauai, Hanalei Bay, Oahu, Pearl Harbor National Memorial, Waikiki Beach and Maui.
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 21, 2026 at 6:53 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
