Kauai Väder Prognos
Kauai weather: 20°C, duggregn. Varje timme forecast, 14-day outlook, UV, air quality and the best time och visit.
Risk assessment for Kauai
Derived from the current forecast window - not an official warning.
Peak gusts of 45 km/h and 0 thunderstorm days in the next 16 days.
Wettest single day forecast at 26 mm, 246 mm across the window. Flash flooding risk rises sharply above 50 mm in a day.
Active alerts for Kauai
Flood Watch issued september 17 at 5:40PM HST until september 18 at 6:00AM HST by NWS Honolulu HI
Issued by NWS Honolulu HI
16-day forecast for Kauai
Max / Min; Nederb.; UV
| Dag | Förhållanden | Max / Min | Nederb. | Vind | UV |
|---|---|---|---|---|---|
| tor, sep 17 | 🌦️ Light showers | 22° / 20° | 100% · 26 mm | 8 km/h | 5 |
| fre, sep 18 | 🌦️ Light showers | 22° / 19° | 100% · 20 mm | 11 km/h | 7 |
| lör, sep 19 | 🌦️ Light showers | 24° / 19° | 100% · 26 mm | 12 km/h | 7 |
| sön, sep 20 | 🌦️ Light showers | 24° / 19° | 94% · 15 mm | 11 km/h | 7 |
| mån, sep 21 | 🌦️ Light drizzle | 24° / 19° | 63% · 3 mm | 10 km/h | 7 |
| tis, sep 22 | 🌦️ Duggregn | 25° / 18° | 87% · 7 mm | 9 km/h | 8 |
| ons, sep 23 | 🌦️ Light drizzle | 24° / 18° | 80% · 2 mm | 9 km/h | 7 |
| tor, sep 24 | 🌦️ Light showers | 21° / 19° | 84% · 18 mm | 8 km/h | 4 |
| fre, sep 25 | 🌦️ Light showers | 23° / 18° | 76% · 19 mm | 12 km/h | 8 |
| lör, sep 26 | 🌦️ Light showers | 21° / 18° | 91% · 24 mm | 11 km/h | 8 |
| sön, sep 27 | 🌦️ Light showers | 20° / 18° | 90% · 15 mm | 11 km/h | 7 |
| mån, sep 28 | 🌦️ Light showers | 21° / 18° | 84% · 18 mm | 9 km/h | 7 |
| tis, sep 29 | 🌦️ Light showers | 20° / 18° | 84% · 21 mm | 10 km/h | 8 |
| ons, sep 30 | 🌧️ Heavy drizzle | 21° / 18° | 77% · 12 mm | 12 km/h | 8 |
| tor, okt 1 | 🌧️ Heavy drizzle | 22° / 18° | 76% · 14 mm | 12 km/h | 8 |
| fre, okt 2 | 🌦️ Duggregn | 24° / 18° | 39% · 6 mm | 15 km/h | 7 |
What this means for Kauai
Today is slightly cooler than average for september. The forecast high of 22°C is 1.9°C below the 24°C typical for this month.
A 100% chance means rain is expected over most of the area. Plan indoor alternatives. Around 26 mm is forecast, which is enough och soak trails and slow traffic.
Sikt is down och 0,2 km - 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 juni och augusti.
The gap between the warmest and coldest month averages 4°C - an unusually even climate through the year.
Se prognosen för Kauai per tidsintervall
Kauai weather - more answers
Explore Kauai
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Frequently asked questions
Where is Kauai?
Kauai is an island in Hawaii. Its coordinates are 22.0964, -159.5261. It lies in Nordamerika.
What is the weather like in Kauai just nu?
It is currently 20°C (68°F) med duggregn. Luftfuktighet is 100% and wind is 6 km/h.
When is the best time och visit Kauai?
augusti, september and oktober offer the most comfortable conditions in Kauai, which has a temperate climate. mars, november and december are usually the hardest months for outdoor plans.
What time zone is Kauai in?
Kauai observes Pacific/Honolulu (UTC-10:00). The local time is 9:18 PM.
What is the nearest airport och Kauai?
The closest airports are Daniel K. Inouye International Airport (HNL), 186 km away.
What are the top things och do in Kauai?
Popular options include Hanalei Bay, Oahu, Pearl Harbor National Memorial, Waikiki Beach, Maui and Haleakala National Park.
What places are in Kauai?
Kauai covers 1 places in this atlas, including Hanalei Bay.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (islands) - coordinates, hierarchy and facts. |
|---|---|
| Prognos and observations | Open-Meteo (ECMWF and national models). |
| Luftkvalitet and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Klimat averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Väder 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 17, 2026 at 9:18 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
