Hawaii · Kauai
Na Pali Coast
Sea
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Air
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UV
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More like this
Climate · monthly averages
Sea temperature by month
30-year averages (1996–2025). Min/Max are typical daily lows and highs, not record extremes.
68°F
72°F
75°F
79°F
82°F
86°F
January
75.3°F(74°F–77°F)
February
74.5°F(73°F–76°F)
March
74.4°F(73°F–76°F)
April
75.1°F(74°F–76°F)
May
76.5°F(75°F–77°F)
June
77.8°F(76°F–79°F)
July
78.5°F(77°F–80°F)
August
79.3°F(78°F–81°F)
September
79.8°F(78°F–81°F)
October
79.6°F(78°F–81°F)
November
78.1°F(77°F–80°F)
December
76.5°F(75°F–78°F)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MinMin °F | 7474.1 | 7373.5 | 7373.0 | 7473.7 | 7575.2 | 7676.1 | 7776.7 | 7877.6 | 7878.2 | 7878.1 | 7776.6 | 7575.3 |
| AvgAvg °F | 7575.3 | 7574.5 | 7474.4 | 7575.1 | 7676.5 | 7877.8 | 7878.5 | 7979.3 | 8079.8 | 8079.6 | 7878.1 | 7676.5 |
| MaxMax °F | 7776.6 | 7675.8 | 7675.8 | 7676.3 | 7777.5 | 7979.1 | 8079.9 | 8181.1 | 8181.4 | 8181.2 | 8079.7 | 7878.2 |
Warmest in September (79.8°F). Coldest in March (74.4°F). Comfortable for swimming year-round.
About Na Pali Coast
The Nā Pali Coast spans Kauai's northwestern shore, where fluted basalt cliffs rise as high as 1,200 metres straight out of the Pacific with no road touching the coastline. Keʻe Beach marks the northern end and the Kalalau Trail's eastern trailhead, while Polihale Beach closes the southern terminus as the longest stretch of sand in the Hawaiian Islands, reached only by a rough four-wheel-drive track. While powerful currents and lethal surf make swimming dangerous, sea temperatures hold between 25 and 26 °C from July through September.