Anaehoomalu Bay Water Temperature
Updated Sat 14:42 (Pacific/Honolulu)
USA · Forecast updated Sep 26, 2026, 14:42 UTC · refresh delayed
Current Sea Temperature
28.1°C
82.6°F
Very warm water
Valid Sep 26, 2026, 14:42 (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 September average is 27.4°C (81.3°F) from the historical baseline.
Recent trend
Holding fairly steady
Seven-day average: 28.5°C, versus 28.7°C in the prior seven days.
What to wear
Very warm water
Swimwear is usually enough; a rash guard adds sun protection.
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 28.5°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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 |
Partial coverage: 4 calendar months with records. Profile calculated from 2235 hourly forecast records across 4 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 28.1°C (82.6°F). Over the last 30 days, the average has been 28.5°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 28.1°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 →