Is this weather normal in Kauai County?

Hawaii · county records since 1991, through September 2026.

Weather › Hawaii › Kauai County

17.6 inches fell in September, the most for a September in Kauai County in 36 years. Kauai County just had its 3rd-warmest September in 36 years, +1° against the usual.

This week

Usual for Oct 28 to Nov 3: highs near 79°, lows near 65°

That is the 1991 to 2020 average for these dates in Kauai County. The Weather Service forecast fills in below.

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usual high for the datewarmercooler

The last 12 months

Oct: +0.4°OctNov: +0.5°NovDec: +1.1°DecJan 2026: +0.8°JanFeb: +0.3°FebMar: +1.2°MarApr: +0.2°AprMay: +0.1°MayJun: -0.4°JunJul: -0.1°JulAug: +0.9°AugSep: +0.9°Sepwarmercooler

Each bar is a month's average temperature against the usual for that month (1991 to 2020). Ranks compare the same month in every year since 1991.

Every year since 1991

19912025

Rain and drought

Oct: -0.2 inOctNov: -1.6 inNovDec: -0.1 inDecJan 2026: +0.7 inJanFeb: +1.9 inFebMar: +6.2 inMarApr: +3.8 inAprMay: +4.0 inMayJun: +0.1 inJunJul: +2.6 inJulAug: +1.8 inAugSep: +12.5 inSepwetterdrier

Rain and melted snow against the usual for each month. The drought reading is NOAA's Palmer index for the county.

Month by month in Kauai County

MonthUsual high / lowUsual rainWarmestColdest
January75° / 60°5.7 in69.8° 202165.0° 1993
February74° / 60°7.1 in68.9° 202364.5° 1993
March75° / 61°8.8 in70.0° 202565.6° 1996
April76° / 62°5.9 in71.1° 201667.2° 2009
May78° / 64°4.7 in72.0° 200568.5° 1998
June80° / 66°5.0 in74.2° 201970.6° 1998
July81° / 67°5.2 in75.4° 201572.0° 1998
August82° / 68°5.5 in76.5° 201572.9° 2012
September82° / 67°5.1 in76.5° 201972.7° 2012
October80° / 66°6.1 in74.5° 200972.2° 1998
November78° / 64°7.8 in73.1° 201969.3° 1997
December76° / 62°8.5 in71.3° 201966.5° 1997

Warmest and coldest are the month's whole-month average temperature, with the year it happened.

Towns in Kauai County

Nearby counties