INSTRUMENT / SEA TEMPERATURE
Anaehoomalu Bay Water Temperature
Updated Tue 21:07 (Pacific/Honolulu)
USA · Forecast updated Nov 10, 2026, 21:07 UTC
Current Sea Temperature
27.5°C
81.5°F
Warm water
Valid Nov 10, 2026, 21:07 (Pacific/Honolulu). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
0.7°C above
The typical November average is 26.8°C (80.2°F) from the historical baseline.
Recent trend
Holding fairly steady
Seven-day average: 27.5°C, versus 27.8°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 or replace the snorkel forecast.
Typical Sea Temperature Over the Year
In the historical baseline for Anaehoomalu Bay, typical monthly averages range from about 25.2°C (77.4°F) in February to 27.4°C (81.3°F) in September.
Over the past 30 days, the average sea temperature in Anaehoomalu Bay has been 27.9°C.
Historical baseline (full year)
Northern Hemisphere. Summer is generally June–August; winter is December–February.
Typical monthly sea-surface temperature near Anaehoomalu Bay, calculated from hourly observations for 2023–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 25.5–25.8°C | 25.6°C / 78.1°F |
| February | 25.1–25.4°C | 25.2°C / 77.4°F |
| March | 24.9–25.8°C | 25.3°C / 77.5°F |
| April | 25.0–26.2°C | 25.6°C / 78.1°F |
| May | 26.1–26.5°C | 26.3°C / 79.3°F |
| June | 26.6–26.9°C | 26.7°C / 80.1°F |
| July | 26.9–27.0°C | 27.0°C / 80.6°F |
| August | 27.2–27.4°C | 27.3°C / 81.1°F |
| September | 27.1–27.6°C | 27.4°C / 81.3°F |
| October | 27.1–27.4°C | 27.3°C / 81.1°F |
| November | 26.7–27.0°C | 26.8°C / 80.2°F |
| December | 26.0–26.4°C | 26.2°C / 79.2°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (19.96, -155.96). Each month is the mean of yearly monthly means; the range is the lowest and highest of those yearly monthly means. Open-Meteo methodology.
Water temperature by month
Each month uses the 2023–2025 baseline. The range is the lowest and highest yearly monthly mean, not an hourly extreme.
Anaehoomalu Bay in January
Typical January water temperature near Anaehoomalu Bay is 25.6°C (78.1°F), with yearly monthly means from 25.5–25.8°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: December 26.2°C · February 25.2°C.
Explore Anaehoomalu Bay sea temperature in January, including swim comfort and month comparisons →
Anaehoomalu Bay in February
Typical February water temperature near Anaehoomalu Bay is 25.2°C (77.4°F), with yearly monthly means from 25.1–25.4°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: January 25.6°C · March 25.3°C.
Explore Anaehoomalu Bay sea temperature in February, including swim comfort and month comparisons →
Anaehoomalu Bay in March
Typical March water temperature near Anaehoomalu Bay is 25.3°C (77.5°F), with yearly monthly means from 24.9–25.8°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: February 25.2°C · April 25.6°C.
Explore Anaehoomalu Bay sea temperature in March, including swim comfort and month comparisons →
Anaehoomalu Bay in April
Typical April water temperature near Anaehoomalu Bay is 25.6°C (78.1°F), with yearly monthly means from 25.0–26.2°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: March 25.3°C · May 26.3°C.
Explore Anaehoomalu Bay sea temperature in April, including swim comfort and month comparisons →
Anaehoomalu Bay in May
Typical May water temperature near Anaehoomalu Bay is 26.3°C (79.3°F), with yearly monthly means from 26.1–26.5°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: April 25.6°C · June 26.7°C.
Explore Anaehoomalu Bay sea temperature in May, including swim comfort and month comparisons →
Anaehoomalu Bay in June
Typical June water temperature near Anaehoomalu Bay is 26.7°C (80.1°F), with yearly monthly means from 26.6–26.9°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: May 26.3°C · July 27.0°C.
Explore Anaehoomalu Bay sea temperature in June, including swim comfort and month comparisons →
Anaehoomalu Bay in July
Typical July water temperature near Anaehoomalu Bay is 27.0°C (80.6°F), with yearly monthly means from 26.9–27.0°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: June 26.7°C · August 27.3°C.
Explore Anaehoomalu Bay sea temperature in July, including swim comfort and month comparisons →
Anaehoomalu Bay in August
Typical August water temperature near Anaehoomalu Bay is 27.3°C (81.1°F), with yearly monthly means from 27.2–27.4°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: July 27.0°C · September 27.4°C.
Explore Anaehoomalu Bay sea temperature in August, including swim comfort and month comparisons →
Anaehoomalu Bay in September
Typical September water temperature near Anaehoomalu Bay is 27.4°C (81.3°F), with yearly monthly means from 27.1–27.6°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: August 27.3°C · October 27.3°C.
Explore Anaehoomalu Bay sea temperature in September, including swim comfort and month comparisons →
Anaehoomalu Bay in October
Typical October water temperature near Anaehoomalu Bay is 27.3°C (81.1°F), with yearly monthly means from 27.1–27.4°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: September 27.4°C · November 26.8°C.
Explore Anaehoomalu Bay sea temperature in October, including swim comfort and month comparisons →
Anaehoomalu Bay in November
Typical November water temperature near Anaehoomalu Bay is 26.8°C (80.2°F), with yearly monthly means from 26.7–27.0°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: October 27.3°C · December 26.2°C.
Explore Anaehoomalu Bay sea temperature in November, including swim comfort and month comparisons →
Anaehoomalu Bay in December
Typical December water temperature near Anaehoomalu Bay is 26.2°C (79.2°F), with yearly monthly means from 26.0–26.4°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: November 26.8°C · January 25.6°C.
Explore Anaehoomalu Bay sea temperature in December, including swim comfort and month comparisons →
Forecast archive (growing)
These values come from hourly forecasts SnorkelForecast has stored. They cover only months with records and do not replace the historical baseline.
| Month | Min | Average | Max |
|---|---|---|---|
| June | 27.2°C / 81.0°F | 27.5°C / 81.5°F | 27.8°C / 82.0°F |
| July | 27.2°C / 81.0°F | 28.0°C / 82.4°F | 28.6°C / 83.5°F |
| August | 27.7°C / 81.9°F | 28.3°C / 82.9°F | 28.8°C / 83.8°F |
| September | 27.9°C / 82.2°F | 28.5°C / 83.3°F | 29.2°C / 84.6°F |
| October | 27.6°C / 81.7°F | 28.1°C / 82.7°F | 28.6°C / 83.5°F |
| November | 27.1°C / 80.8°F | 27.5°C / 81.6°F | 28.1°C / 82.6°F |
Partial coverage: 6 calendar months with records. Profile calculated from 3322 hourly forecast records across 6 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Anaehoomalu Bay
Waikoloa resort bay, often called A-Bay, with easy access and patch reef snorkeling.
- Area
- Waikoloa
- Local timing
- Morning
- Exposure
- West-facing resort bay
- Entry type
- Sandy bay with reef patches
- Difficulty
- Easy
Anaehoomalu Bay Water Temperature: Common Questions
What is the water temperature in Anaehoomalu Bay today?
The current sea surface temperature near Anaehoomalu Bay is 27.5°C (81.5°F). Over the last 30 days, the average has been 27.9°C.
When is the water warmest in Anaehoomalu Bay?
The water is typically warmest in September, at around 27.4°C (81.3°F) in the 2023–2025 historical baseline.
When is the water coldest in Anaehoomalu Bay?
The water is typically coldest in February, at around 25.2°C (77.4°F) in the same historical baseline.
Can you swim in Anaehoomalu Bay today?
At 27.5°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 Anaehoomalu Bay.
View Snorkel Forecast →