INSTRUMENT / SEA TEMPERATURE
Kahaluu Beach Park Water Temperature
Updated Thu 05:00 (Pacific/Honolulu)
USA · Forecast updated Nov 12, 2026, 05:00 UTC
Current Sea Temperature
27.4°C
81.3°F
Warm water
Valid Nov 12, 2026, 05:00 (Pacific/Honolulu). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
0.6°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: 27.6°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 Kahaluu Beach Park, typical monthly averages range from about 25.3°C (77.5°F) in February to 27.4°C (81.3°F) in September.
Over the past 30 days, the average sea temperature in Kahaluu Beach Park 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 Kahaluu Beach Park, calculated from hourly observations for 2023–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 25.3–25.8°C | 25.5°C / 77.9°F |
| February | 25.1–25.4°C | 25.3°C / 77.5°F |
| March | 25.1–25.7°C | 25.3°C / 77.5°F |
| April | 25.2–26.1°C | 25.6°C / 78.1°F |
| May | 25.9–26.4°C | 26.1°C / 79.0°F |
| June | 26.4–26.8°C | 26.6°C / 79.9°F |
| July | 26.7–27.1°C | 26.9°C / 80.4°F |
| August | 27.1–27.3°C | 27.3°C / 81.1°F |
| September | 27.2–27.6°C | 27.4°C / 81.3°F |
| October | 27.1–27.2°C | 27.2°C / 81.0°F |
| November | 26.6–27.1°C | 26.8°C / 80.2°F |
| December | 26.0–26.4°C | 26.3°C / 79.3°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (19.54, -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.
Kahaluu Beach Park in January
Typical January water temperature near Kahaluu Beach Park is 25.5°C (77.9°F), with yearly monthly means from 25.3–25.8°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: December 26.3°C · February 25.3°C.
Kahaluu Beach Park in February
Typical February water temperature near Kahaluu Beach Park is 25.3°C (77.5°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 25.5°C · March 25.3°C.
Kahaluu Beach Park in March
Typical March water temperature near Kahaluu Beach Park is 25.3°C (77.5°F), with yearly monthly means from 25.1–25.7°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: February 25.3°C · April 25.6°C.
Explore Kahaluu Beach Park sea temperature in March, including swim comfort and month comparisons →
Kahaluu Beach Park in April
Typical April water temperature near Kahaluu Beach Park is 25.6°C (78.1°F), with yearly monthly means from 25.2–26.1°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: March 25.3°C · May 26.1°C.
Explore Kahaluu Beach Park sea temperature in April, including swim comfort and month comparisons →
Kahaluu Beach Park in May
Typical May water temperature near Kahaluu Beach Park is 26.1°C (79.0°F), with yearly monthly means from 25.9–26.4°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: April 25.6°C · June 26.6°C.
Explore Kahaluu Beach Park sea temperature in May, including swim comfort and month comparisons →
Kahaluu Beach Park in June
Typical June water temperature near Kahaluu Beach Park is 26.6°C (79.9°F), with yearly monthly means from 26.4–26.8°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: May 26.1°C · July 26.9°C.
Explore Kahaluu Beach Park sea temperature in June, including swim comfort and month comparisons →
Kahaluu Beach Park in July
Typical July water temperature near Kahaluu Beach Park is 26.9°C (80.4°F), with yearly monthly means from 26.7–27.1°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: June 26.6°C · August 27.3°C.
Explore Kahaluu Beach Park sea temperature in July, including swim comfort and month comparisons →
Kahaluu Beach Park in August
Typical August water temperature near Kahaluu Beach Park is 27.3°C (81.1°F), with yearly monthly means from 27.1–27.3°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: July 26.9°C · September 27.4°C.
Explore Kahaluu Beach Park sea temperature in August, including swim comfort and month comparisons →
Kahaluu Beach Park in September
Typical September water temperature near Kahaluu Beach Park is 27.4°C (81.3°F), with yearly monthly means from 27.2–27.6°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: August 27.3°C · October 27.2°C.
Kahaluu Beach Park in October
Typical October water temperature near Kahaluu Beach Park is 27.2°C (81.0°F), with yearly monthly means from 27.1–27.2°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.
Kahaluu Beach Park in November
Typical November water temperature near Kahaluu Beach Park is 26.8°C (80.2°F), with yearly monthly means from 26.6–27.1°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: October 27.2°C · December 26.3°C.
Kahaluu Beach Park in December
Typical December water temperature near Kahaluu Beach Park is 26.3°C (79.3°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 25.5°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 | 27.3°C / 81.1°F | 27.7°C / 81.9°F | 28.2°C / 82.8°F |
| July | 26.9°C / 80.4°F | 27.9°C / 82.2°F | 28.7°C / 83.7°F |
| August | 27.3°C / 81.1°F | 28.1°C / 82.5°F | 29.0°C / 84.2°F |
| September | 27.3°C / 81.1°F | 28.4°C / 83.2°F | 29.3°C / 84.7°F |
| October | 27.5°C / 81.5°F | 28.0°C / 82.5°F | 28.9°C / 84.0°F |
| November | 27.3°C / 81.1°F | 27.6°C / 81.7°F | 28.2°C / 82.8°F |
Partial coverage: 6 calendar months with records. Profile calculated from 3354 hourly forecast records across 6 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Kahaluu Beach Park
Accessible Kona snorkel beach with reef fish, turtles and beginner-friendly facilities.
- Area
- Kailua-Kona
- Local timing
- Morning
- Exposure
- Protected Kona reef
- Entry type
- Sandy/rocky entry with shallow reef
- Difficulty
- Easy
Kahaluu Beach Park Water Temperature: Common Questions
What is the water temperature in Kahaluu Beach Park today?
The current sea surface temperature near Kahaluu Beach Park is 27.4°C (81.3°F). Over the last 30 days, the average has been 27.9°C.
When is the water warmest in Kahaluu Beach Park?
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 Kahaluu Beach Park?
The water is typically coldest in February, at around 25.3°C (77.5°F) in the same historical baseline.
Can you swim in Kahaluu Beach Park today?
At 27.4°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 Kahaluu Beach Park.
View Snorkel Forecast →