Measurements:
°C
°F
Lanai
80°F
SW 11 mph
Feels like: 82°F
Precip: 5%
World Resorts USA Lanai Weather

Lanai Sea Water Temperature

Current Sea Water Temperature:
+83.6°F
Maximum Sea Water Temperature in June: 83.8°F
Minimum Sea Water Temperature in June: 80.6°F
Average water temperature in June: 82.1°F

Sea Water Temperature for the Last 10 Days:

June 24 83.6°F June 19 83.0°F
June 23 83.8°F June 18 82.8°F
June 22 83.8°F June 17 82.6°F
June 21 83.6°F June 16 82.6°F
June 20 83.4°F June 15 82.0°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 21 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
July 8 mph

Lanai on the Weather Map

USA Resorts:
NAME
Chicago +66
Hawaii +80
Honolulu +80
Houston +82
Las Vegas +96
Los Angeles +66
Maui +74
Miami +80
Miami Beach +88
Myrtle Beach +78
New York +70
San Diego +68
San Francisco +58
Sarasota +84
Tampa +84
24 Hours Weather Forecast
Lanai
Local time: 18:23
24 jun, wednesday
2100 78°F
SW
13 mph
25 jun, thursday
0000 76°F
SW
11 mph
0300 76°F
SW
5 mph
0600 76°F
SW
5 mph
0900 76°F
W
2 mph
1200 78°F
NW
1 mph
1500 80°F
NW
2 mph
1800 80°F
W
2 mph