Kapalua Bay Sea Temperature
Updated Sat 06:36 (Pacific/Honolulu)
USA · Forecast updated Aug 8, 2026, 06:36 UTC
Current Sea Temperature
26.4°C
79.5°F
Warm water
Versus this month's average
Close to average
The August average in our archive is 26.4°C (79.5°F).
Recent trend
Holding fairly steady
Seven-day average: 26.5°C, versus 26.4°C in the prior seven days.
What to wear
Warm water
Most people are comfortable in swimwear or a light rash guard.
Cold tolerance varies. Wind, session length, sunshine, and exertion also affect comfort; temperature alone does not describe sea conditions.
Sea Surface Temperature Over the Year
In the data collected for Kapalua Bay, monthly averages range from about 26.4°C (79.6°F) in June to 26.6°C (80.0°F) in July.
Over the past 30 days, the average sea temperature in Kapalua Bay has been 26.6°C.
Monthly Water Temperature Averages
| Month | Min | Average | Max |
|---|---|---|---|
| June | 25.9°C / 78.6°F | 26.4°C / 79.6°F | 27.1°C / 80.8°F |
| July | 25.9°C / 78.6°F | 26.6°C / 80.0°F | 27.3°C / 81.1°F |
| August | 25.7°C / 78.3°F | 26.4°C / 79.5°F | 27.0°C / 80.6°F |
Profile calculated from 1647 hourly forecast records across 3 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Kapalua Bay
Sheltered by two reef-fringed points, Kapalua Bay is one of Maui's calmest and most protected snorkeling beaches, ideal for families and beginners. Best visibility comes on low-wind mornings.
- Area
- Maui, Hawaii
Kapalua Bay Water Temperature: Common Questions
What is the sea temperature in Kapalua Bay today?
The current sea surface temperature in Kapalua Bay is 26.4°C. Over the last 30 days, the average has been 26.6°C.
When is the water warmest in Kapalua Bay?
The warmest monthly average in the Kapalua Bay archive is July, at around 26.6°C (80.0°F).
When is the water coldest in Kapalua Bay?
The coldest monthly average in the archive is June, at around 26.4°C (79.6°F).
Can you swim in Kapalua Bay today?
At 26.4°C, the water is usually comfortable for swimming and snorkeling.
Full Snorkeling Forecast
See how today's sea temperature, wave height, wind, and tides combine into a detailed snorkeling score for Kapalua Bay.
View Snorkel Forecast →