Boca Catalina Water Temperature
Updated Thu 12:53 (America/Aruba)
Aruba · Forecast updated Sep 24, 2026, 12:53 UTC
Current Sea Temperature
27.9°C
82.2°F
Warm water
Valid Sep 24, 2026, 12:53 (America/Aruba). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
1.3°C below
The typical September average is 29.2°C (84.6°F) from the historical baseline.
Recent trend
Holding fairly steady
Seven-day average: 27.1°C, versus 27.3°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 Boca Catalina, typical monthly averages range from about 26.3°C (79.3°F) in February to 29.9°C (85.8°F) in October.
Over the past 30 days, the average sea temperature in Boca Catalina has been 27.3°C.
Historical baseline (full year)
Northern Hemisphere. Summer is generally June–August; winter is December–February.
Typical monthly sea-surface temperature near Boca Catalina, calculated from hourly observations for 2023–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 26.4–27.3°C | 26.9°C / 80.4°F |
| February | 25.9–26.7°C | 26.3°C / 79.3°F |
| March | 26.0–26.7°C | 26.4°C / 79.5°F |
| April | 26.5–27.3°C | 26.8°C / 80.2°F |
| May | 27.0–28.2°C | 27.5°C / 81.5°F |
| June | 26.0–28.1°C | 27.2°C / 81.0°F |
| July | 27.2–27.7°C | 27.5°C / 81.5°F |
| August | 28.0–28.5°C | 28.3°C / 82.9°F |
| September | 28.8–29.6°C | 29.2°C / 84.6°F |
| October | 29.4–30.3°C | 29.9°C / 85.8°F |
| November | 28.0–29.9°C | 29.0°C / 84.2°F |
| December | 27.4–28.1°C | 27.8°C / 82.0°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (12.54, -70.04). 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.
Boca Catalina in January
Typical January water temperature near Boca Catalina is 26.9°C (80.4°F), with yearly monthly means from 26.4–27.3°C.
Boca Catalina in February
Typical February water temperature near Boca Catalina is 26.3°C (79.3°F), with yearly monthly means from 25.9–26.7°C.
Boca Catalina in March
Typical March water temperature near Boca Catalina is 26.4°C (79.5°F), with yearly monthly means from 26.0–26.7°C.
Boca Catalina in April
Typical April water temperature near Boca Catalina is 26.8°C (80.2°F), with yearly monthly means from 26.5–27.3°C.
Boca Catalina in May
Typical May water temperature near Boca Catalina is 27.5°C (81.5°F), with yearly monthly means from 27.0–28.2°C.
Boca Catalina in June
Typical June water temperature near Boca Catalina is 27.2°C (81.0°F), with yearly monthly means from 26.0–28.1°C.
Boca Catalina in July
Typical July water temperature near Boca Catalina is 27.5°C (81.5°F), with yearly monthly means from 27.2–27.7°C.
Boca Catalina in August
Typical August water temperature near Boca Catalina is 28.3°C (82.9°F), with yearly monthly means from 28.0–28.5°C.
Boca Catalina in September
Typical September water temperature near Boca Catalina is 29.2°C (84.6°F), with yearly monthly means from 28.8–29.6°C.
Boca Catalina in October
Typical October water temperature near Boca Catalina is 29.9°C (85.8°F), with yearly monthly means from 29.4–30.3°C.
Boca Catalina in November
Typical November water temperature near Boca Catalina is 29.0°C (84.2°F), with yearly monthly means from 28.0–29.9°C.
Boca Catalina in December
Typical December water temperature near Boca Catalina is 27.8°C (82.0°F), with yearly monthly means from 27.4–28.1°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 | 25.6°C / 78.1°F | 26.4°C / 79.6°F | 27.2°C / 81.0°F |
| July | 25.1°C / 77.2°F | 26.0°C / 78.8°F | 27.4°C / 81.3°F |
| August | 26.2°C / 79.2°F | 27.1°C / 80.8°F | 27.8°C / 82.0°F |
| September | 26.9°C / 80.4°F | 27.4°C / 81.3°F | 28.0°C / 82.4°F |
Partial coverage: 4 calendar months with records. Profile calculated from 2781 hourly forecast records across 4 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Boca Catalina
Calm northwest cove with fish-filled shallows close to shore.
- Area
- Aruba
Boca Catalina Water Temperature: Common Questions
What is the water temperature in Boca Catalina today?
The current sea surface temperature near Boca Catalina is 27.9°C (82.2°F). Over the last 30 days, the average has been 27.3°C.
When is the water warmest in Boca Catalina?
The water is typically warmest in October, at around 29.9°C (85.8°F) in the 2023–2025 historical baseline.
When is the water coldest in Boca Catalina?
The water is typically coldest in February, at around 26.3°C (79.3°F) in the same historical baseline.
Can you swim in Boca Catalina today?
At 27.9°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 Boca Catalina.
View Snorkel Forecast →