San Cristóbal Water Temperature
Updated Wed 04:49 (Pacific/Galapagos)
Ecuador · Forecast updated Sep 23, 2026, 04:49 UTC
Current Sea Temperature
26.6°C
79.9°F
Warm water
Valid Sep 23, 2026, 04:49 (Pacific/Galapagos). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
4.8°C above
The typical September average is 21.8°C (71.2°F) from the historical baseline.
Recent trend
Holding fairly steady
Seven-day average: 26.4°C, versus 26.2°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 San Cristóbal, typical monthly averages range from about 21.8°C (71.2°F) in September to 28.0°C (82.4°F) in March.
Over the past 30 days, the average sea temperature in San Cristóbal has been 25.9°C.
Historical baseline (full year)
Southern Hemisphere. Summer is generally December–February; winter is June–August.
Typical monthly sea-surface temperature near San Cristóbal, calculated from hourly observations for 2023–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 23.8–25.9°C | 24.8°C / 76.6°F |
| February | 27.6–27.8°C | 27.7°C / 81.9°F |
| March | 27.8–28.4°C | 28.0°C / 82.4°F |
| April | 25.3–28.2°C | 26.9°C / 80.4°F |
| May | 22.9–28.2°C | 25.3°C / 77.5°F |
| June | 21.9–27.4°C | 24.4°C / 75.9°F |
| July | 21.8–26.2°C | 23.4°C / 74.1°F |
| August | 20.7–25.0°C | 22.2°C / 72.0°F |
| September | 19.9–24.4°C | 21.8°C / 71.2°F |
| October | 21.4–24.6°C | 22.5°C / 72.5°F |
| November | 21.1–25.0°C | 23.0°C / 73.4°F |
| December | 21.5–25.0°C | 23.1°C / 73.6°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (-0.88, -89.62). 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.
San Cristóbal in January
Typical January water temperature near San Cristóbal is 24.8°C (76.6°F), with yearly monthly means from 23.8–25.9°C.
San Cristóbal in February
Typical February water temperature near San Cristóbal is 27.7°C (81.9°F), with yearly monthly means from 27.6–27.8°C.
San Cristóbal in March
Typical March water temperature near San Cristóbal is 28.0°C (82.4°F), with yearly monthly means from 27.8–28.4°C.
San Cristóbal in April
Typical April water temperature near San Cristóbal is 26.9°C (80.4°F), with yearly monthly means from 25.3–28.2°C.
San Cristóbal in May
Typical May water temperature near San Cristóbal is 25.3°C (77.5°F), with yearly monthly means from 22.9–28.2°C.
San Cristóbal in June
Typical June water temperature near San Cristóbal is 24.4°C (75.9°F), with yearly monthly means from 21.9–27.4°C.
San Cristóbal in July
Typical July water temperature near San Cristóbal is 23.4°C (74.1°F), with yearly monthly means from 21.8–26.2°C.
San Cristóbal in August
Typical August water temperature near San Cristóbal is 22.2°C (72.0°F), with yearly monthly means from 20.7–25.0°C.
San Cristóbal in September
Typical September water temperature near San Cristóbal is 21.8°C (71.2°F), with yearly monthly means from 19.9–24.4°C.
San Cristóbal in October
Typical October water temperature near San Cristóbal is 22.5°C (72.5°F), with yearly monthly means from 21.4–24.6°C.
San Cristóbal in November
Typical November water temperature near San Cristóbal is 23.0°C (73.4°F), with yearly monthly means from 21.1–25.0°C.
San Cristóbal in December
Typical December water temperature near San Cristóbal is 23.1°C (73.6°F), with yearly monthly means from 21.5–25.0°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 | 25.8°C / 78.4°F | 26.7°C / 80.0°F | 27.5°C / 81.5°F |
| July | 25.2°C / 77.4°F | 26.0°C / 78.7°F | 27.2°C / 81.0°F |
| August | 24.5°C / 76.1°F | 25.6°C / 78.0°F | 27.0°C / 80.6°F |
| September | 25.3°C / 77.5°F | 26.1°C / 79.0°F | 26.7°C / 80.1°F |
Partial coverage: 4 calendar months with records. Profile calculated from 2749 hourly forecast records across 4 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at San Cristóbal
Galápagos island where sea lions and reef fish fill the shallow Kicker Rock bays.
- Area
- Galápagos
San Cristóbal Water Temperature: Common Questions
What is the water temperature in San Cristóbal today?
The current sea surface temperature near San Cristóbal is 26.6°C (79.9°F). Over the last 30 days, the average has been 25.9°C.
When is the water warmest in San Cristóbal?
The water is typically warmest in March, at around 28.0°C (82.4°F) in the 2023–2025 historical baseline.
When is the water coldest in San Cristóbal?
The water is typically coldest in September, at around 21.8°C (71.2°F) in the same historical baseline.
Can you swim in San Cristóbal today?
At 26.6°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 San Cristóbal.
View Snorkel Forecast →