Measurements:
°C
°F
Lanai
80°F
SW 2 mph
Feels like: 82°F
Precip: 8%
World Resorts USA Lanai Weather

Lanai Sea Water Temperature

Current Sea Water Temperature:
+83.2°F
Maximum Sea Water Temperature in August: 85.2°F
Minimum Sea Water Temperature in August: 82.2°F
Average water temperature in August: 83.6°F

Sea Water Temperature for the Last 10 Days:

August 05 83.2°F July 31 84.4°F
August 04 83.2°F July 30 84.0°F
August 03 83.4°F July 29 83.4°F
August 02 83.8°F July 28 83.2°F
August 01 84.4°F July 27 83.2°F

When is the Warmest Sea for Lanai?

According to our data for the last three years for Lanai the highest average sea water temperature was in October, September and August.

Average Water Temperature by Month, °F

Sea Water Temperature in October

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Lanai was 84.4°F. The maximum and minimum values were 82.8°F and 86.0°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Lanai was 84.5°F. The maximum and minimum values were 83.6°F and 85.4°F respectively.

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Lanai was 84.6°F. The maximum and minimum values were 83.8°F and 85.2°F respectively.

Best Time to Visit Lanai
The most sunny months:
August 21 days
July 20 days
September 17 days
The most warm months:
September 82.8 °F
August 82.2 °F
October 82.2 °F
Warmest sea temperature:
October 84.1 °F
September 84.0 °F
August 83.6 °F
The most cold months:
February 76.8 °F
March 77.3 °F
April 77.4 °F
The most rainy months:
March 1 day
February 1 day
January 1 day
The most windy months:
February 9 mph
March 8 mph
January 8 mph

Lanai on the Weather Map

USA Resorts:
NAME
Boston +94
Chicago +82
Hawaii +82
Houston +102
Las Vegas +124
Los Angeles +92
Maui +78
Miami +92
Myrtle Beach +84
New York +84
San Diego +80
San Francisco +62
Santa Monica +80
Sarasota +92
Washington +88
24 Hours Weather Forecast
Lanai
Local time: 08:23
05 aug, wednesday
0900 80°F
SW
2 mph
1200 80°F
E
1 mph
1500 82°F
SE
3 mph
1800 82°F
SW
6 mph
2100 78°F
SW
7 mph
06 aug, thursday
0000 78°F
SW
6 mph
0300 78°F
W
5 mph
0600 78°F
S
3 mph