Hawaii · Oahu
Waikiki
Sea
79.9°F
Air
–
UV
–
Beach day
23–28°C
More like this
All beaches · United States
Climate · monthly averages
Sea temperature by month
5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.
72°F
75°F
79°F
82°F
86°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
7676.5
7676.1
7675.7
7676.1
7777.1
7878.2
7979.0
8079.6
8079.5
8079.6
7978.8
7777.3
AvgAvg °F
7777.2
7676.5
7676.3
7776.7
7777.4
7978.5
7979.4
8080.1
8080.3
8080.4
7979.2
7877.9
MaxMax °F
7877.9
7776.9
7776.8
7777.3
7877.9
7979.0
8079.6
8180.7
8180.9
8180.9
7979.4
7978.6
Warmest in October (80.4°F). Coldest in March (76.3°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.