World sea water temperatures

Water temperature in Haena Beach (HI) in May

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Is it warm enough to swim in Haena Beach in May? Average water temperature in Haena Beach in May is 77.2°F and therefore suitable for comfortable swimming. The warmest sea in Haena Beach in May is 79.7°F, and the coldest is 73.8°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Haena Beach

Changes water temperature in Haena Beach in May 2025, 2024

To get an accurate forecast for the water temperature in Haena Beach for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Haena Beach, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of May.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
May 174.8°F75.7°F74.5°F78.1°F
May 274.5°F75.7°F74.5°F78.3°F
May 374.5°F75.9°F74.5°F78.4°F
May 474.7°F75.9°F74.7°F78.4°F
May 574.7°F75.9°F74.7°F78.4°F
May 674.5°F75.9°F74.5°F78.4°F
May 774.7°F75.9°F74.7°F78.4°F
May 874.5°F75.9°F74.5°F78.8°F
May 974.3°F76.1°F74.3°F79.2°F
May 1074.3°F76.1°F74.3°F79°F
May 1174.1°F76.1°F74.1°F79°F
May 1273.9°F75.9°F73.9°F79°F
May 1374.1°F76.1°F74.1°F79°F
May 1473.9°F76.5°F73.9°F79°F
May 1573.9°F76.8°F73.9°F78.8°F
Day 2025 2024 Min Max
May 1673.8°F76.5°F73.8°F78.8°F
May 1773.9°F76.5°F73.9°F78.8°F
May 1874.1°F76.5°F74.1°F78.8°F
May 1974.3°F76.6°F74.3°F79°F
May 2074.5°F76.6°F74.5°F79.2°F
May 2174.5°F76.8°F74.5°F79.2°F
May 2274.5°F77.2°F74.5°F79.2°F
May 2374.7°F77°F74.7°F79.2°F
May 2474.7°F77.2°F74.7°F79.7°F
May 2574.7°F77°F74.7°F79.5°F
May 2674.7°F77°F74.7°F79.5°F
May 2774.7°F77°F74.7°F79.3°F
May 2874.8°F76.6°F74.8°F79.3°F
May 2975°F76.6°F75°F79.5°F
May 3075°F76.6°F75°F79.7°F
May 3174.8°F76.6°F74.8°F79.5°F
Haena Beach water temp chart in May

Average water temperature in Haena Beach in May over a decade

20162017201820192020
78.1°F78.8°F75.9°F78.1°F77.9°F
20212022202320242025
77°F77.5°F77.4°F76.5°F74.5°F

Haena Beach sea state in May

Chart comparing the height of waves in Haena Beach in May over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Haena Beach in May

Haena Beach water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in May?

Want to know where the water temperature in May is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Temperature in neighboring cities

The nearest locations with the average water temperature in May. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Kee Beach77.2°F73.8°F79.7°F
Hideaway Beach77.2°F74.5°F79.7°F
Secret Beach77.2°F74.5°F79.7°F
Wailua77.4°F74.7°F79.9°F
Polihale77.7°F74.8°F80.4°F
Hanapepe77.7°F75.2°F80.4°F
Eleele77.7°F75.2°F80.4°F
Port Allen77.7°F75°F80.4°F
Lawai Beach77.5°F74.8°F80.2°F
Poipu77.5°F74.7°F80.2°F

Kauai photo gallery

  • Kīlauea Lighthouse, Kaua’i
  • Before sunrise at Haena looking east.
  • Kauai
  • Hanalei

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Haena Beach is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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