Weather Forecast for Kauai

Hawaii, United States of America

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Light rain shower

Current Weather - Kauai: 23°C

Hawaii, United States of America

Light rain shower

Feels like 22°C

Wind

25 km/h E

Humidity

85%

Pressure

1014 mb

UV Index

0

Visibility

10 km

Light rain shower

Light rain shower

Saturday, September 26, 2026

High

25°C

Low

23°C

Rain Chance

84%

Hourly Forecast

Light rain shower 24°C
16:00
Light rain shower 24°C
17:00
Light rain shower 24°C
18:00
Patchy rain nearby 24°C
19:00
Light rain shower 23°C
20:00
Light rain shower 23°C
21:00
Light rain shower 23°C
22:00
Light rain shower 23°C
23:00
Sep 27

Day Statistics

Maximum Wind

31 km/h

Humidity

81%

Precipitation

8 mm

UV Index

11

Visibility

10 km

Rain Chance

84%

Snow Chance

0%

Sun & Moon

Sunrise

06:27 AM

Sunset

06:30 PM

Moonrise

06:35 PM

Moonset

06:33 AM

Moon Phase

Full Moon

Moon Illumination

99%

Air Quality

PM2.5

12.2

μg/m³

PM10

20.7

μg/m³

NO₂

0.1

μg/m³

O₃

64

μg/m³

SO₂

0.1

μg/m³

CO

99.6

μg/m³

US EPA Index: 1 GB DEFRA Index: 2

Weather Alerts

Small Craft Advisory issued September 25 at 9:32AM HST until September 26 at 6:00PM HST by NWS Honolulu HI

Kauai Northwest Waters; Kauai Windward Waters; Kauai Leeward Waters; Kauai Channel; Oahu Windward Waters; Oahu Leeward Waters Sep 25, 09:32 AM - Sep 26, 10:00 AM
Severity: Minor Urgency: Expected

* WHAT...For the Small Craft Advisory, east winds 20 to 30 kt with gusts up to 35 kt and seas 8 to 13 feet. For the Gale Watch, east winds 25 to 35 kt with gusts up to 45 kt and seas 11 to 15 feet possible. * WHERE...Kauai Northwest Waters, Kauai Windward Waters, Kauai Leeward Waters, Kauai Channel, Oahu Windward Waters and Oahu Leeward Waters. * WHEN...For the Small Craft Advisory, until 6 PM HST Saturday. For the Gale Watch, from Saturday evening through Sunday afternoon. * IMPACTS...Strong winds can cause hazardous seas which could capsize or damage vessels and reduce visibility.

A Gale Watch is issued when the risk of gale force winds of 34 to 47 knots has significantly increased but the specific timing and/or location is still uncertain. It is intended to provide additional lead time for mariners who may wish to consider altering their plans.

Event: Small Craft Advisory Certainty: Likely Category: Met

Gale Watch issued September 25 at 9:32AM HST until September 27 at 6:00PM HST by NWS Honolulu HI

Kauai Northwest Waters; Kauai Windward Waters; Kauai Leeward Waters; Kauai Channel; Oahu Windward Waters; Oahu Leeward Waters Sep 25, 09:32 AM - Sep 26, 10:00 AM
Severity: Moderate Urgency: Future

* WHAT...For the Small Craft Advisory, east winds 20 to 30 kt with gusts up to 35 kt and seas 8 to 13 feet. For the Gale Watch, east winds 25 to 35 kt with gusts up to 45 kt and seas 11 to 15 feet possible. * WHERE...Kauai Northwest Waters, Kauai Windward Waters, Kauai Leeward Waters, Kauai Channel, Oahu Windward Waters and Oahu Leeward Waters. * WHEN...For the Small Craft Advisory, until 6 PM HST Saturday. For the Gale Watch, from Saturday evening through Sunday afternoon. * IMPACTS...Strong winds can cause hazardous seas which could capsize or damage vessels and reduce visibility.

A Gale Watch is issued when the risk of gale force winds of 34 to 47 knots has significantly increased but the specific timing and/or location is still uncertain. It is intended to provide additional lead time for mariners who may wish to consider altering their plans.

Event: Gale Watch Certainty: Possible Category: Met

Small Craft Advisory issued September 25 at 2:17PM HST until September 26 at 6:00PM HST by NWS Honolulu HI

Kauai Northwest Waters; Kauai Windward Waters; Kauai Leeward Waters; Kauai Channel; Oahu Windward Waters; Oahu Leeward Waters Sep 25, 02:17 PM - Sep 26, 03:30 AM
Severity: Minor Urgency: Expected

* WHAT...For the Small Craft Advisory, east winds 20 to 30 kt with gusts up to 35 kt and seas 8 to 13 feet. For the Gale Watch, east winds 25 to 35 kt with gusts up to 45 kt and seas 11 to 15 feet possible. * WHERE...Kauai Northwest Waters, Kauai Windward Waters, Kauai Leeward Waters, Kauai Channel, Oahu Windward Waters and Oahu Leeward Waters. * WHEN...For the Small Craft Advisory, until 6 PM HST Saturday. For the Gale Watch, from Saturday evening through Sunday afternoon. * IMPACTS...Strong winds can cause hazardous seas which could capsize or damage vessels and reduce visibility.

A Gale Watch is issued when the risk of gale force winds of 34 to 47 knots has significantly increased but the specific timing and/or location is still uncertain. It is intended to provide additional lead time for mariners who may wish to consider altering their plans.

Event: Small Craft Advisory Certainty: Likely Category: Met

Gale Watch issued September 25 at 2:17PM HST until September 27 at 6:00PM HST by NWS Honolulu HI

Kauai Northwest Waters; Kauai Windward Waters; Kauai Leeward Waters; Kauai Channel; Oahu Windward Waters; Oahu Leeward Waters Sep 25, 02:17 PM - Sep 26, 03:30 AM
Severity: Moderate Urgency: Future

* WHAT...For the Small Craft Advisory, east winds 20 to 30 kt with gusts up to 35 kt and seas 8 to 13 feet. For the Gale Watch, east winds 25 to 35 kt with gusts up to 45 kt and seas 11 to 15 feet possible. * WHERE...Kauai Northwest Waters, Kauai Windward Waters, Kauai Leeward Waters, Kauai Channel, Oahu Windward Waters and Oahu Leeward Waters. * WHEN...For the Small Craft Advisory, until 6 PM HST Saturday. For the Gale Watch, from Saturday evening through Sunday afternoon. * IMPACTS...Strong winds can cause hazardous seas which could capsize or damage vessels and reduce visibility.

A Gale Watch is issued when the risk of gale force winds of 34 to 47 knots has significantly increased but the specific timing and/or location is still uncertain. It is intended to provide additional lead time for mariners who may wish to consider altering their plans.

Event: Gale Watch Certainty: Possible Category: Met