INSTRUMENT / SEA TEMPERATURE
Roatán Water Temperature
Updated Fri 10:51 (America/Tegucigalpa)
Honduras · Forecast updated Nov 6, 2026, 10:51 UTC
Current Sea Temperature
29.4°C
84.9°F
Very warm water
Valid Nov 6, 2026, 10:51 (America/Tegucigalpa). 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 28.8°C (83.8°F) from the historical baseline.
Recent trend
Holding fairly steady
Seven-day average: 29.5°C, versus 29.5°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 Roatán, typical monthly averages range from about 27.2°C (81.0°F) in February to 30.3°C (86.5°F) in September.
Over the past 30 days, the average sea temperature in Roatán has been 29.9°C.
Historical baseline (full year)
Northern Hemisphere. Summer is generally June–August; winter is December–February.
Typical monthly sea-surface temperature near Roatán, calculated from hourly observations for 2022–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 27.2–27.7°C | 27.4°C / 81.3°F |
| February | 27.1–27.3°C | 27.2°C / 81.0°F |
| March | 27.4–28.0°C | 27.7°C / 81.9°F |
| April | 27.6–28.2°C | 27.8°C / 82.0°F |
| May | 28.5–28.9°C | 28.7°C / 83.7°F |
| June | 28.3–29.5°C | 29.1°C / 84.4°F |
| July | 28.5–29.2°C | 28.9°C / 84.0°F |
| August | 29.4–29.9°C | 29.7°C / 85.5°F |
| September | 29.8–30.6°C | 30.3°C / 86.5°F |
| October | 29.9–30.3°C | 30.1°C / 86.2°F |
| November | 28.7–29.1°C | 28.8°C / 83.8°F |
| December | 27.6–28.5°C | 28.1°C / 82.6°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (16.29, -86.54). 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.
Roatán in January
Typical January water temperature near Roatán is 27.4°C (81.3°F), with yearly monthly means from 27.2–27.7°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: December 28.1°C · February 27.2°C.
Explore Roatán sea temperature in January, including swim comfort and month comparisons →
Roatán in February
Typical February water temperature near Roatán is 27.2°C (81.0°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: January 27.4°C · March 27.7°C.
Explore Roatán sea temperature in February, including swim comfort and month comparisons →
Roatán in March
Typical March water temperature near Roatán is 27.7°C (81.9°F), with yearly monthly means from 27.4–28.0°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: February 27.2°C · April 27.8°C.
Explore Roatán sea temperature in March, including swim comfort and month comparisons →
Roatán in April
Typical April water temperature near Roatán is 27.8°C (82.0°F), with yearly monthly means from 27.6–28.2°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: March 27.7°C · May 28.7°C.
Explore Roatán sea temperature in April, including swim comfort and month comparisons →
Roatán in May
Typical May water temperature near Roatán is 28.7°C (83.7°F), with yearly monthly means from 28.5–28.9°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: April 27.8°C · June 29.1°C.
Explore Roatán sea temperature in May, including swim comfort and month comparisons →
Roatán in June
Typical June water temperature near Roatán is 29.1°C (84.4°F), with yearly monthly means from 28.3–29.5°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: May 28.7°C · July 28.9°C.
Explore Roatán sea temperature in June, including swim comfort and month comparisons →
Roatán in July
Typical July water temperature near Roatán is 28.9°C (84.0°F), with yearly monthly means from 28.5–29.2°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: June 29.1°C · August 29.7°C.
Explore Roatán sea temperature in July, including swim comfort and month comparisons →
Roatán in August
Typical August water temperature near Roatán is 29.7°C (85.5°F), with yearly monthly means from 29.4–29.9°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: July 28.9°C · September 30.3°C.
Explore Roatán sea temperature in August, including swim comfort and month comparisons →
Roatán in September
Typical September water temperature near Roatán is 30.3°C (86.5°F), with yearly monthly means from 29.8–30.6°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: August 29.7°C · October 30.1°C.
Explore Roatán sea temperature in September, including swim comfort and month comparisons →
Roatán in October
Typical October water temperature near Roatán is 30.1°C (86.2°F), with yearly monthly means from 29.9–30.3°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: September 30.3°C · November 28.8°C.
Explore Roatán sea temperature in October, including swim comfort and month comparisons →
Roatán in November
Typical November water temperature near Roatán is 28.8°C (83.8°F), with yearly monthly means from 28.7–29.1°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: October 30.1°C · December 28.1°C.
Explore Roatán sea temperature in November, including swim comfort and month comparisons →
Roatán in December
Typical December water temperature near Roatán is 28.1°C (82.6°F), with yearly monthly means from 27.6–28.5°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: November 28.8°C · January 27.4°C.
Explore Roatán 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 | 28.3°C / 82.9°F | 28.7°C / 83.7°F | 29.7°C / 85.5°F |
| July | 28.0°C / 82.4°F | 28.5°C / 83.4°F | 29.0°C / 84.2°F |
| August | 28.4°C / 83.1°F | 29.0°C / 84.1°F | 29.8°C / 85.6°F |
| September | 29.0°C / 84.2°F | 29.7°C / 85.4°F | 30.8°C / 87.4°F |
| October | 29.4°C / 84.9°F | 30.1°C / 86.2°F | 31.1°C / 88.0°F |
| November | 29.2°C / 84.6°F | 29.5°C / 85.2°F | 29.9°C / 85.8°F |
Partial coverage: 6 calendar months with records. Profile calculated from 3811 hourly forecast records across 6 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Roatán
Bay Island on the Mesoamerican Reef with shallow coral walls off many beaches.
- Area
- Bay Islands
Roatán Water Temperature: Common Questions
What is the water temperature in Roatán today?
The current sea surface temperature near Roatán is 29.4°C (84.9°F). Over the last 30 days, the average has been 29.9°C.
When is the water warmest in Roatán?
The water is typically warmest in September, at around 30.3°C (86.5°F) in the 2022–2025 historical baseline.
When is the water coldest in Roatán?
The water is typically coldest in February, at around 27.2°C (81.0°F) in the same historical baseline.
Can you swim in Roatán today?
At 29.4°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 Roatán.
View Snorkel Forecast →