How warm is Kauaʻi in January?

Typical highs are about 78°F and the sea is about 77°F. Most swimmers find it comfortable.

Is January hurricane season in Kauaʻi?

No. Storm risk is very low in January.

How crowded is Kauaʻi in January?

Typically very busy, around New Year holiday and MLK weekend. The quietest months are usually September and October.

Kauaʻi in January

January is one of the weakest months for a beach trip to Kauaʻi: a typical day grades A-, the 10th best of the 12 months. Expect highs near 78°F, water around 77°F and about a 40% chance of rain on a given day. Beaches are typically very busy (New Year holiday and MLK weekend).

Typical dayA-10th of 12 months

Highs / water78°FSea 77°F

Rain chance40%on a given day

Waves–typical

CrowdsVery busyNew Year holiday

Storm riskVery lowoutside storm season

Kauaʻi month by month

Typical grade and high for each month. Higher is better: A+ to F.

December: A- · January: A- · February: A-. The best months are usually June, September and October, and the weakest are February and March.

Best beaches in Kauaʻi in January

Resorts with the best typical January, and their grades for the next few days.

Beach	Typical Jan	This week
OUTRIGGER Kauaʻi Beach Resort & Spa	A-	SatB+SunA-MonA-TueB+WedA-
The Royal Sonesta Kaua'i Resort Lihue	A-	SatB+SunA-MonA-TueB+WedA-
Banyan Harbor Resort	A-	SatA-SunBMonB+TueB-WedB+
Kauai Inn	A-	SatA-SunBMonB+TueB-WedB+
Koloa Landing Resort at Poipu	A-	SatA-SunBMonB+TueBWedB
Marriott’s Waiohai Beach Club	A-	SatA-SunBMonB+TueBWedB
Sheraton Kauai Coconut Beach Resort	A-	SatB+SunA-MonA-TueB+WedA-
Plantation Hale Suites	A-	SatB+SunA-MonA-TueB+WedA-

Grades for the next few days from Veabird's beach forecast, updated Oct 3, 18:00 UTC. Higher is better: A+ to F.

Better beach options in January

Further afield: Huatulco (A). Every destination in January.

Questions

Is January a good time to visit Kauaʻi?: January is one of the weakest months for a beach trip to Kauaʻi: a typical day grades A-, the 10th best of the 12 months. Expect highs near 78°F, water around 77°F and about a 40% chance of rain on a given day. Beaches are typically very busy (New Year holiday and MLK weekend).
How warm is Kauaʻi in January?: Typical highs are about 78°F and the sea is about 77°F. Most swimmers find it comfortable.
Is January hurricane season in Kauaʻi?: No. Storm risk is very low in January.
How crowded is Kauaʻi in January?: Typically very busy, around New Year holiday and MLK weekend. The quietest months are usually September and October.

Plan it

Typical-month numbers from Veabird's year-ahead outlook for the 20 resorts here (median resort): 6 years of ERA5 climate normals, the seasonal pattern of the Atlantic sargassum belt, holiday crowd calendars and historical storm tracks. Any given year can differ; check the 16-day forecast before you go.