Measurements:
°C
°F
Lanai
74°F
SW 3 mph
Feels like: 80°F
Precip: 3%
World Resorts USA Lanai Weather

Lanai Sea Water Temperature

Current Sea Water Temperature:
+82.4°F
Maximum Sea Water Temperature in June: 83.4°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 04 82.4°F May 29 80.4°F
June 03 82.2°F May 28 80.4°F
June 01 81.2°F May 27 80.6°F
May 31 80.8°F May 26 81.0°F
May 30 80.6°F May 25 81.0°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
Boston +90
Chicago +76
Hawaii +78
Honolulu +78
Houston +86
Las Vegas +92
Los Angeles +70
Maui +70
Miami +82
Miami Beach +84
New York +94
San Diego +64
San Francisco +60
Sarasota +94
Tampa +92
24 Hours Weather Forecast
Lanai
Local time: 07:06
04 jun, thursday
0900 76°F
W
3 mph
1200 78°F
E
4 mph
1500 80°F
W
5 mph
1800 78°F
W
6 mph
2100 76°F
SW
9 mph
05 jun, friday
0000 76°F
SW
8 mph
0300 74°F
SW
6 mph
0600 74°F
SW
4 mph