Molokini Crater Sea Temperature
Updated Sat 17:14 (Pacific/Honolulu)
USA · Forecast updated Sep 5, 2026, 17:14 UTC
Current Sea Temperature
27.6°C
81.7°F
Warm water
Versus this month's average
Close to average
The September average in our archive is 27.7°C (81.8°F).
Recent trend
Holding fairly steady
Seven-day average: 27.7°C, versus 27.9°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 Molokini Crater, monthly averages range from about 26.7°C (80.0°F) in June to 27.7°C (81.8°F) in September.
Over the past 30 days, the average sea temperature in Molokini Crater has been 27.7°C.
Monthly Water Temperature Averages
Northern Hemisphere. Summer is generally June–August; winter is December–February.
| Month | Min | Average | Max |
|---|---|---|---|
| June | 26.0°C / 78.8°F | 26.7°C / 80.0°F | 27.4°C / 81.3°F |
| July | 26.6°C / 79.9°F | 27.2°C / 80.9°F | 27.9°C / 82.2°F |
| August | 26.9°C / 80.4°F | 27.6°C / 81.7°F | 28.3°C / 82.9°F |
| September | 27.3°C / 81.1°F | 27.7°C / 81.8°F | 28.0°C / 82.4°F |
Profile calculated from 2329 hourly forecast records across 4 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Molokini Crater
A crescent-shaped volcanic crater off Maui's south shore, Molokini offers some of the clearest water in Hawaii, often exceeding 30 metres of visibility. Conditions are best on calm, low-wind mornings when the crater wall shelters the inner reef.
- Area
- Maui, Hawaii
Molokini Crater Water Temperature: Common Questions
What is the sea temperature in Molokini Crater today?
The current sea surface temperature in Molokini Crater is 27.6°C. Over the last 30 days, the average has been 27.7°C.
When is the water warmest in Molokini Crater?
The warmest monthly average in the Molokini Crater archive is September, at around 27.7°C (81.8°F).
When is the water coldest in Molokini Crater?
The coldest monthly average in the archive is June, at around 26.7°C (80.0°F).
Can you swim in Molokini Crater today?
At 27.6°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 Molokini Crater.
View Snorkel Forecast →