World sea water temperatures

Water temperature in Spencer Beach (HI) in September

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Is it warm enough to swim in Spencer Beach in September? Average water temperature in Spencer Beach in September is 81°F and therefore suitable for comfortable swimming. The warmest sea in Spencer Beach in September is 85.5°F, and the coldest is 78.1°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Spencer Beach

Changes water temperature in Spencer Beach in September 2025, 2024

To get an accurate forecast for the water temperature in Spencer 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 Spencer Beach, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of September.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
September 180.8°F81.3°F79°F84°F
September 280.1°F81°F79°F84.4°F
September 380.2°F80.8°F78.8°F84.4°F
September 480.2°F80.8°F78.8°F84.4°F
September 580.4°F80.4°F78.8°F84°F
September 680.6°F80.4°F78.8°F84.2°F
September 780.8°F80.6°F79.2°F84.6°F
September 880.6°F80.2°F78.8°F85.5°F
September 981.1°F80.2°F78.6°F85.3°F
September 1081.3°F80.4°F78.6°F85.3°F
September 1181.3°F80.4°F78.6°F84.9°F
September 1281.5°F80.8°F78.6°F84.7°F
September 1381°F81°F78.6°F84.4°F
September 1481°F81.1°F78.6°F84.4°F
September 1581°F80.8°F78.8°F84.2°F
Day 2025 2024 Min Max
September 1680.8°F81°F79°F84.4°F
September 1780.6°F81°F78.8°F84.6°F
September 1880.8°F81.1°F78.8°F84.4°F
September 1981°F81°F78.8°F84.6°F
September 2081°F81°F78.4°F84.4°F
September 2180.8°F81°F78.6°F84.4°F
September 2280.8°F80.6°F78.4°F84.6°F
September 2380.6°F80.4°F78.1°F84.4°F
September 2480.8°F80.6°F78.8°F84.7°F
September 2580.8°F80.4°F78.6°F84.6°F
September 2680.8°F80.6°F79°F84.2°F
September 2780.8°F80.6°F78.8°F84°F
September 2881°F80.6°F79°F83.7°F
September 2981.3°F80.6°F79.3°F83.5°F
September 3081°F80.6°F79.2°F83.5°F
Spencer Beach water temp chart in September

Average water temperature in Spencer Beach in September over a decade

20162017201820192020
81.9°F81.9°F82.4°F83.1°F80.4°F
20212022202320242025
80.6°F81°F80.4°F80.8°F

Spencer Beach sea state in September

Chart comparing the height of waves in Spencer Beach in September 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 Spencer Beach in September

Spencer 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 September?

Want to know where the water temperature in September 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 September. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Mahukona80.8°F77.9°F85.3°F
Kukio81°F78.1°F85.5°F
Makalawena Beach81°F78.1°F85.5°F
Kailua Kona81°F78.1°F85.3°F
Kahaluu-Keauhou81°F78.1°F85.1°F
Manini Beach81°F78.1°F85.1°F
Kealakekua Bay81°F78.1°F85.1°F
Honaunau Bay81°F78.1°F85.1°F
Two Step Beach81°F78.1°F85.1°F
Hookena Beach81°F78.1°F84.9°F

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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 Spencer 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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