Hawaii · Oahu
Waikiki
Sea
—
Air
—
UV
—
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
76.3°F(75°F–78°F)
February
75.7°F(74°F–77°F)
March
75.6°F(74°F–77°F)
April
76.1°F(75°F–77°F)
May
77.3°F(76°F–78°F)
June
78.4°F(77°F–80°F)
July
79.1°F(77°F–80°F)
August
79.9°F(78°F–82°F)
September
80.4°F(79°F–82°F)
October
80.2°F(79°F–82°F)
November
79.0°F(78°F–80°F)
December
77.4°F(76°F–79°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 | 7575.1 | 7474.5 | 7474.4 | 7574.6 | 7676.0 | 7776.8 | 7777.5 | 7878.4 | 7978.5 | 7978.7 | 7877.7 | 7676.0 |
| AvgAvg °F | 7676.3 | 7675.7 | 7675.6 | 7676.1 | 7777.3 | 7878.4 | 7979.1 | 8079.9 | 8080.4 | 8080.2 | 7979.0 | 7777.4 |
| MaxMax °F | 7877.6 | 7776.8 | 7776.7 | 7777.4 | 7878.3 | 8079.7 | 8080.4 | 8281.6 | 8282.3 | 8281.5 | 8080.0 | 7978.8 |
Warmest in September (80.4°F). Coldest in March (75.6°F). Comfortable for swimming year-round.
About Waikiki
Waikīkī occupies the south shore of Oahu, anchored at its eastern end by Diamond Head, a 232-metre tuff cone known in Hawaiian as Lēʻahi and formed by a hydrovolcanic eruption around 300,000 years ago. Central Kuhio Beach sits sheltered by offshore breakwaters that pool calm water for swim schools and first-time surfers, while Queen's Surf Beach below the crater draws longboarders to its slow point break. Sea temperatures hold 26–27 °C from July through September, with Honolulu International about twenty minutes by H-1.