INSTRUMENT / SEA TEMPERATURE
Isabela Water Temperature
Updated Sat 14:57 (Pacific/Galapagos)
Ecuador · Forecast updated Nov 7, 2026, 14:57 UTC
Current Sea Temperature
28.4°C
83.1°F
Very warm water
Valid Nov 7, 2026, 14:57 (Pacific/Galapagos). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
5.0°C above
The typical November average is 23.4°C (74.1°F) from the historical baseline.
Recent trend
Holding fairly steady
Seven-day average: 28.5°C, versus 28.4°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 Isabela, typical monthly averages range from about 22.4°C (72.3°F) in September to 27.9°C (82.2°F) in April.
Over the past 30 days, the average sea temperature in Isabela has been 28.0°C.
Historical baseline (full year)
Southern Hemisphere. Summer is generally December–February; winter is June–August.
Typical monthly sea-surface temperature near Isabela, calculated from hourly observations for 2022–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 24.5–26.5°C | 25.4°C / 77.7°F |
| February | 27.0–27.9°C | 27.4°C / 81.3°F |
| March | 27.4–28.3°C | 27.7°C / 81.9°F |
| April | 26.9–28.8°C | 27.9°C / 82.2°F |
| May | 24.8–28.4°C | 26.3°C / 79.3°F |
| June | 22.8–27.6°C | 25.0°C / 77.0°F |
| July | 22.3–26.7°C | 24.1°C / 75.4°F |
| August | 21.4–25.3°C | 22.8°C / 73.0°F |
| September | 20.8–25.0°C | 22.4°C / 72.3°F |
| October | 21.7–25.0°C | 22.9°C / 73.2°F |
| November | 21.9–25.2°C | 23.4°C / 74.1°F |
| December | 22.4–25.9°C | 23.6°C / 74.5°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (-1.04, -90.96). 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 2022–2025 baseline. The range is the lowest and highest yearly monthly mean, not an hourly extreme.
Isabela in January
Typical January water temperature near Isabela is 25.4°C (77.7°F), with yearly monthly means from 24.5–26.5°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: December 23.6°C · February 27.4°C.
Explore Isabela sea temperature in January, including swim comfort and month comparisons →
Isabela in February
Typical February water temperature near Isabela is 27.4°C (81.3°F), with yearly monthly means from 27.0–27.9°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: January 25.4°C · March 27.7°C.
Explore Isabela sea temperature in February, including swim comfort and month comparisons →
Isabela in March
Typical March water temperature near Isabela is 27.7°C (81.9°F), with yearly monthly means from 27.4–28.3°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: February 27.4°C · April 27.9°C.
Explore Isabela sea temperature in March, including swim comfort and month comparisons →
Isabela in April
Typical April water temperature near Isabela is 27.9°C (82.2°F), with yearly monthly means from 26.9–28.8°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: March 27.7°C · May 26.3°C.
Explore Isabela sea temperature in April, including swim comfort and month comparisons →
Isabela in May
Typical May water temperature near Isabela is 26.3°C (79.3°F), with yearly monthly means from 24.8–28.4°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: April 27.9°C · June 25.0°C.
Explore Isabela sea temperature in May, including swim comfort and month comparisons →
Isabela in June
Typical June water temperature near Isabela is 25.0°C (77.0°F), with yearly monthly means from 22.8–27.6°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: May 26.3°C · July 24.1°C.
Explore Isabela sea temperature in June, including swim comfort and month comparisons →
Isabela in July
Typical July water temperature near Isabela is 24.1°C (75.4°F), with yearly monthly means from 22.3–26.7°C.
Swimming and snorkeling: mild water. A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
Adjacent months: June 25.0°C · August 22.8°C.
Explore Isabela sea temperature in July, including swim comfort and month comparisons →
Isabela in August
Typical August water temperature near Isabela is 22.8°C (73.0°F), with yearly monthly means from 21.4–25.3°C.
Swimming and snorkeling: mild water. A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
Adjacent months: July 24.1°C · September 22.4°C.
Explore Isabela sea temperature in August, including swim comfort and month comparisons →
Isabela in September
Typical September water temperature near Isabela is 22.4°C (72.3°F), with yearly monthly means from 20.8–25.0°C.
Swimming and snorkeling: mild water. A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
Adjacent months: August 22.8°C · October 22.9°C.
Explore Isabela sea temperature in September, including swim comfort and month comparisons →
Isabela in October
Typical October water temperature near Isabela is 22.9°C (73.2°F), with yearly monthly means from 21.7–25.0°C.
Swimming and snorkeling: mild water. A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
Adjacent months: September 22.4°C · November 23.4°C.
Explore Isabela sea temperature in October, including swim comfort and month comparisons →
Isabela in November
Typical November water temperature near Isabela is 23.4°C (74.1°F), with yearly monthly means from 21.9–25.2°C.
Swimming and snorkeling: mild water. A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
Adjacent months: October 22.9°C · December 23.6°C.
Explore Isabela sea temperature in November, including swim comfort and month comparisons →
Isabela in December
Typical December water temperature near Isabela is 23.6°C (74.5°F), with yearly monthly means from 22.4–25.9°C.
Swimming and snorkeling: mild water. A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
Adjacent months: November 23.4°C · January 25.4°C.
Explore Isabela 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 | 26.5°C / 79.7°F | 27.1°C / 80.8°F | 27.5°C / 81.5°F |
| July | 25.6°C / 78.1°F | 26.4°C / 79.6°F | 27.2°C / 81.0°F |
| August | 25.6°C / 78.1°F | 26.2°C / 79.1°F | 27.3°C / 81.1°F |
| September | 25.9°C / 78.6°F | 26.8°C / 80.2°F | 28.0°C / 82.4°F |
| October | 27.1°C / 80.8°F | 27.8°C / 82.0°F | 28.8°C / 83.8°F |
| November | 28.0°C / 82.4°F | 28.5°C / 83.4°F | 29.0°C / 84.2°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 Isabela
Largest Galápagos island with penguins, turtles and sharks in clear lagoons.
- Area
- Galápagos
Isabela Water Temperature: Common Questions
What is the water temperature in Isabela today?
The current sea surface temperature near Isabela is 28.4°C (83.1°F). Over the last 30 days, the average has been 28.0°C.
When is the water warmest in Isabela?
The water is typically warmest in April, at around 27.9°C (82.2°F) in the 2022–2025 historical baseline.
When is the water coldest in Isabela?
The water is typically coldest in September, at around 22.4°C (72.3°F) in the same historical baseline.
Can you swim in Isabela today?
At 28.4°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 Isabela.
View Snorkel Forecast →