INSTRUMENT / SEA TEMPERATURE
Two Step Honaunau Water Temperature
Updated Sat 14:55 (Pacific/Honolulu)
USA · Forecast updated Nov 7, 2026, 14:55 UTC
Current Sea Temperature
27.4°C
81.3°F
Warm water
Valid Nov 7, 2026, 14:55 (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 26.7°C (80.1°F) from the historical baseline.
Recent trend
Holding fairly steady
Seven-day average: 27.7°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 Two Step Honaunau, 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 Two Step Honaunau has been 28.0°C.
Historical baseline (full year)
Northern Hemisphere. Summer is generally June–August; winter is December–February.
Typical monthly sea-surface temperature near Two Step Honaunau, calculated from hourly observations for 2022–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 25.2–25.7°C | 25.5°C / 77.9°F |
| February | 25.1–25.4°C | 25.2°C / 77.4°F |
| March | 25.1–25.7°C | 25.3°C / 77.5°F |
| April | 25.3–26.0°C | 25.6°C / 78.1°F |
| May | 26.0–26.5°C | 26.2°C / 79.2°F |
| June | 26.5–26.8°C | 26.6°C / 79.9°F |
| July | 26.7–27.1°C | 26.9°C / 80.4°F |
| August | 27.2–27.4°C | 27.2°C / 81.0°F |
| September | 27.3–27.5°C | 27.4°C / 81.3°F |
| October | 27.1–27.2°C | 27.2°C / 81.0°F |
| November | 26.6–27.0°C | 26.7°C / 80.1°F |
| December | 25.9–26.4°C | 26.2°C / 79.2°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (19.46, -155.88). 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 2022–2025 baseline. The range is the lowest and highest yearly monthly mean, not an hourly extreme.
Two Step Honaunau in January
Typical January water temperature near Two Step Honaunau is 25.5°C (77.9°F), with yearly monthly means from 25.2–25.7°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 Two Step Honaunau sea temperature in January, including swim comfort and month comparisons →
Two Step Honaunau in February
Typical February water temperature near Two Step Honaunau 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 25.5°C · March 25.3°C.
Two Step Honaunau in March
Typical March water temperature near Two Step Honaunau 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 25.2°C · April 25.6°C.
Explore Two Step Honaunau sea temperature in March, including swim comfort and month comparisons →
Two Step Honaunau in April
Typical April water temperature near Two Step Honaunau is 25.6°C (78.1°F), with yearly monthly means from 25.3–26.0°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: March 25.3°C · May 26.2°C.
Explore Two Step Honaunau sea temperature in April, including swim comfort and month comparisons →
Two Step Honaunau in May
Typical May water temperature near Two Step Honaunau is 26.2°C (79.2°F), with yearly monthly means from 26.0–26.5°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: April 25.6°C · June 26.6°C.
Explore Two Step Honaunau sea temperature in May, including swim comfort and month comparisons →
Two Step Honaunau in June
Typical June water temperature near Two Step Honaunau is 26.6°C (79.9°F), with yearly monthly means from 26.5–26.8°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: May 26.2°C · July 26.9°C.
Explore Two Step Honaunau sea temperature in June, including swim comfort and month comparisons →
Two Step Honaunau in July
Typical July water temperature near Two Step Honaunau 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 27.2°C.
Explore Two Step Honaunau sea temperature in July, including swim comfort and month comparisons →
Two Step Honaunau in August
Typical August water temperature near Two Step Honaunau is 27.2°C (81.0°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 26.9°C · September 27.4°C.
Explore Two Step Honaunau sea temperature in August, including swim comfort and month comparisons →
Two Step Honaunau in September
Typical September water temperature near Two Step Honaunau is 27.4°C (81.3°F), with yearly monthly means from 27.3–27.5°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: August 27.2°C · October 27.2°C.
Two Step Honaunau in October
Typical October water temperature near Two Step Honaunau 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 26.7°C.
Explore Two Step Honaunau sea temperature in October, including swim comfort and month comparisons →
Two Step Honaunau in November
Typical November water temperature near Two Step Honaunau is 26.7°C (80.1°F), with yearly monthly means from 26.6–27.0°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: October 27.2°C · December 26.2°C.
Two Step Honaunau in December
Typical December water temperature near Two Step Honaunau is 26.2°C (79.2°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: November 26.7°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 | 26.6°C / 79.9°F | 27.4°C / 81.3°F | 28.3°C / 82.9°F |
| July | 26.9°C / 80.4°F | 27.9°C / 82.2°F | 28.7°C / 83.7°F |
| August | 27.2°C / 81.0°F | 28.0°C / 82.4°F | 29.0°C / 84.2°F |
| September | 27.3°C / 81.1°F | 28.5°C / 83.4°F | 29.5°C / 85.1°F |
| October | 27.3°C / 81.1°F | 28.1°C / 82.6°F | 29.0°C / 84.2°F |
| November | 27.4°C / 81.3°F | 27.7°C / 81.8°F | 28.2°C / 82.8°F |
Partial coverage: 6 calendar months with records. Profile calculated from 3839 hourly forecast records across 6 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Two Step Honaunau
Next to Pu'uhonua o Honaunau on the Big Island, Two Step is a celebrated Kona-coast snorkeling site with an easy lava-ledge entry, thriving reef and frequent dolphins. Go early for the calmest, clearest conditions.
- Area
- Big Island, Hawaii
Two Step Honaunau Water Temperature: Common Questions
What is the water temperature in Two Step Honaunau today?
The current sea surface temperature near Two Step Honaunau is 27.4°C (81.3°F). Over the last 30 days, the average has been 28.0°C.
When is the water warmest in Two Step Honaunau?
The water is typically warmest in September, at around 27.4°C (81.3°F) in the 2022–2025 historical baseline.
When is the water coldest in Two Step Honaunau?
The water is typically coldest in February, at around 25.2°C (77.4°F) in the same historical baseline.
Can you swim in Two Step Honaunau 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 Two Step Honaunau.
View Snorkel Forecast →