INSTRUMENT / SEA TEMPERATURE
Caño Island Water Temperature
Updated Fri 10:52 (America/Costa_Rica)
Costa Rica · Forecast updated Nov 6, 2026, 10:52 UTC
Current Sea Temperature
29.8°C
85.6°F
Very warm water
Valid Nov 6, 2026, 10:52 (America/Costa_Rica). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
1.7°C above
The typical November average is 28.1°C (82.6°F) from the historical baseline.
Recent trend
Cooling by 0.3°C
Seven-day average: 29.8°C, versus 30.1°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 Caño Island, typical monthly averages range from about 28.1°C (82.6°F) in November to 30.6°C (87.1°F) in April.
Over the past 30 days, the average sea temperature in Caño Island has been 30.1°C.
Historical baseline (full year)
Northern Hemisphere. Summer is generally June–August; winter is December–February.
Typical monthly sea-surface temperature near Caño Island, calculated from hourly observations for 2022–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 28.9–30.4°C | 29.4°C / 84.9°F |
| February | 29.6–30.8°C | 30.2°C / 86.4°F |
| March | 29.8–30.5°C | 30.2°C / 86.4°F |
| April | 30.5–30.6°C | 30.6°C / 87.1°F |
| May | 29.7–30.8°C | 30.1°C / 86.2°F |
| June | 29.1–30.3°C | 29.5°C / 85.1°F |
| July | 28.7–30.2°C | 29.4°C / 84.9°F |
| August | 28.8–30.0°C | 29.3°C / 84.7°F |
| September | 28.8–30.1°C | 29.3°C / 84.7°F |
| October | 27.8–29.6°C | 28.7°C / 83.7°F |
| November | 27.6–28.7°C | 28.1°C / 82.6°F |
| December | 28.1–29.7°C | 28.8°C / 83.8°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (8.71, -83.87). 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.
Caño Island in January
Typical January water temperature near Caño Island is 29.4°C (84.9°F), with yearly monthly means from 28.9–30.4°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: December 28.8°C · February 30.2°C.
Explore Caño Island sea temperature in January, including swim comfort and month comparisons →
Caño Island in February
Typical February water temperature near Caño Island is 30.2°C (86.4°F), with yearly monthly means from 29.6–30.8°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: January 29.4°C · March 30.2°C.
Explore Caño Island sea temperature in February, including swim comfort and month comparisons →
Caño Island in March
Typical March water temperature near Caño Island is 30.2°C (86.4°F), with yearly monthly means from 29.8–30.5°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: February 30.2°C · April 30.6°C.
Explore Caño Island sea temperature in March, including swim comfort and month comparisons →
Caño Island in April
Typical April water temperature near Caño Island is 30.6°C (87.1°F), with yearly monthly means from 30.5–30.6°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: March 30.2°C · May 30.1°C.
Explore Caño Island sea temperature in April, including swim comfort and month comparisons →
Caño Island in May
Typical May water temperature near Caño Island is 30.1°C (86.2°F), with yearly monthly means from 29.7–30.8°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: April 30.6°C · June 29.5°C.
Explore Caño Island sea temperature in May, including swim comfort and month comparisons →
Caño Island in June
Typical June water temperature near Caño Island is 29.5°C (85.1°F), with yearly monthly means from 29.1–30.3°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: May 30.1°C · July 29.4°C.
Explore Caño Island sea temperature in June, including swim comfort and month comparisons →
Caño Island in July
Typical July water temperature near Caño Island is 29.4°C (84.9°F), with yearly monthly means from 28.7–30.2°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: June 29.5°C · August 29.3°C.
Explore Caño Island sea temperature in July, including swim comfort and month comparisons →
Caño Island in August
Typical August water temperature near Caño Island is 29.3°C (84.7°F), with yearly monthly means from 28.8–30.0°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: July 29.4°C · September 29.3°C.
Explore Caño Island sea temperature in August, including swim comfort and month comparisons →
Caño Island in September
Typical September water temperature near Caño Island is 29.3°C (84.7°F), with yearly monthly means from 28.8–30.1°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: August 29.3°C · October 28.7°C.
Explore Caño Island sea temperature in September, including swim comfort and month comparisons →
Caño Island in October
Typical October water temperature near Caño Island is 28.7°C (83.7°F), with yearly monthly means from 27.8–29.6°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: September 29.3°C · November 28.1°C.
Explore Caño Island sea temperature in October, including swim comfort and month comparisons →
Caño Island in November
Typical November water temperature near Caño Island is 28.1°C (82.6°F), with yearly monthly means from 27.6–28.7°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: October 28.7°C · December 28.8°C.
Explore Caño Island sea temperature in November, including swim comfort and month comparisons →
Caño Island in December
Typical December water temperature near Caño Island is 28.8°C (83.8°F), with yearly monthly means from 28.1–29.7°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: November 28.1°C · January 29.4°C.
Explore Caño Island 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 | 29.0°C / 84.2°F | 30.0°C / 85.9°F | 30.8°C / 87.4°F |
| July | 29.8°C / 85.6°F | 30.3°C / 86.6°F | 31.2°C / 88.2°F |
| August | 29.8°C / 85.6°F | 30.5°C / 86.9°F | 31.1°C / 88.0°F |
| September | 29.5°C / 85.1°F | 30.4°C / 86.7°F | 31.3°C / 88.3°F |
| October | 29.6°C / 85.3°F | 30.2°C / 86.4°F | 30.9°C / 87.6°F |
| November | 28.9°C / 84.0°F | 29.7°C / 85.4°F | 30.4°C / 86.7°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 Caño Island
Pacific biological reserve with rays, reef fish and clear protected water.
- Area
- Puntarenas
Caño Island Water Temperature: Common Questions
What is the water temperature in Caño Island today?
The current sea surface temperature near Caño Island is 29.8°C (85.6°F). Over the last 30 days, the average has been 30.1°C.
When is the water warmest in Caño Island?
The water is typically warmest in April, at around 30.6°C (87.1°F) in the 2022–2025 historical baseline.
When is the water coldest in Caño Island?
The water is typically coldest in November, at around 28.1°C (82.6°F) in the same historical baseline.
Can you swim in Caño Island today?
At 29.8°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 Caño Island.
View Snorkel Forecast →