World Resorts USA Oahu Weather

Oahu sea water temperature

Current sea water temperature:
+79.3°F
Minimum sea water temperature in October: 82.0°F
Maximum sea water temperature in October: 78.4°F
Average sea water temperature in October: 80.2°F

Sea water temperature for the last 10 days:

October 24 79.3°F October 19 80.2°F
October 23 79.5°F October 18 80.6°F
October 22 79.7°F October 17 80.6°F
October 21 79.7°F October 16 80.8°F
October 20 79.9°F October 15 80.8°F

When is the warmest sea in Oahu?

Based on the data about daily sea water temperature for the last three years the warmest sea in Oahu was noticed in October, September and August.

Monthly Sea Temperatures in Oahu, °F

Sea water temperature in October, °F

Show year:
2026
2025
2024

The average sea water temperature in October of 2026 was 80.2°F. The highest and lowest sea temperatures during the month were 80.8°F and 79.3°F.

Sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 80.4°F. The highest and lowest sea temperatures during the month were 80.8°F and 79.3°F.

Sea water temperature in August, °F

Show year:
2026
2025
2024

The average sea water temperature in August of 2026 was 80.3°F. The highest and lowest sea temperatures during the month were 81.0°F and 79.7°F.

Best time for vacation in Oahu

Sunniest months:
January 8 days
September 5 days
August 5 days
Warmest months:
September 81.8 °F
August 81.8 °F
July 81.1 °F
Warmest sea temp:
October 80.2 °F
September 80.1 °F
August 79.6 °F
Coldest months:
February 74.8 °F
March 75.7 °F
January 76.0 °F
Rainiest months:
March 1 day
April 1 day
December 1 day
Windiest months:
July 12.7 mph
May 11.6 mph
June 11.3 mph

Oahu on a weather map

Oahu
+72°F
SW 7 mph
Feels like: +77°F
Precip.: 35%
Places in USA:
Name
°F
+48°F
+52°F
+77°F
+63°F
+72°F
+79°F
+72°F
+55°F
+70°F
+59°F
+70°F
+70°F
+73°F
+61°F
24 Hours Forecast
Oahu
Local time: 17:50
October 24, saturday
1800
72°F
SW
7 mph
2100
72°F
SW
7 mph
October 25, sunday
0000
72°F
SW
6 mph
0300
70°F
SW
6 mph
0600
68°F
SW
6 mph
0900
73°F
SW
6 mph
1200
81°F
SW
6 mph
1500
77°F
SW
8 mph
Units of measurement: °C / °F