Isabela Water Temperature
Updated Wed 00:06 (Pacific/Galapagos)
Ecuador · Forecast updated Sep 23, 2026, 00:06 UTC
Current Sea Temperature
27.0°C
80.6°F
Warm water
Valid Sep 23, 2026, 00:06 (Pacific/Galapagos). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
4.6°C above
The typical September average is 22.4°C (72.3°F) from the historical baseline.
Recent trend
Holding fairly steady
Seven-day average: 26.9°C, versus 26.7°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 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 26.5°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 2023–2025. 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 | 23.9°C / 75.0°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 2023–2025 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Isabela in December
Typical December water temperature near Isabela is 23.9°C (75.0°F), with yearly monthly means from 22.4–25.9°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 | 26.5°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 | 26.7°C / 80.0°F | 27.2°C / 81.0°F |
Partial coverage: 4 calendar months with records. Profile calculated from 2745 hourly forecast records across 4 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 27.0°C (80.6°F). Over the last 30 days, the average has been 26.5°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 2023–2025 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 27.0°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 →