INSTRUMENT / SEA TEMPERATURE
Blue Bay Water Temperature
Updated Sat 14:58 (Indian/Mauritius)
Mauritius · Forecast updated Nov 7, 2026, 14:58 UTC
Current Sea Temperature
26.0°C
78.8°F
Warm water
Valid Nov 7, 2026, 14:58 (Indian/Mauritius). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
Close to average
The typical November average is 25.9°C (78.6°F) from the historical baseline.
Recent trend
Warming by 0.9°C
Seven-day average: 25.7°C, versus 24.9°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 Blue Bay, typical monthly averages range from about 24.1°C (75.4°F) in August to 28.2°C (82.8°F) in March.
Over the past 30 days, the average sea temperature in Blue Bay has been 24.9°C.
Historical baseline (full year)
Southern Hemisphere. Summer is generally December–February; winter is June–August.
Typical monthly sea-surface temperature near Blue Bay, calculated from hourly observations for 2022–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 27.1–28.5°C | 27.8°C / 82.0°F |
| February | 27.5–27.7°C | 27.6°C / 81.7°F |
| March | 27.8–28.9°C | 28.2°C / 82.8°F |
| April | 27.6–28.3°C | 28.0°C / 82.4°F |
| May | 26.2–27.7°C | 27.0°C / 80.6°F |
| June | 25.1–26.1°C | 25.6°C / 78.1°F |
| July | 24.2–24.8°C | 24.6°C / 76.3°F |
| August | 23.6–24.6°C | 24.1°C / 75.4°F |
| September | 23.9–24.5°C | 24.2°C / 75.6°F |
| October | 24.3–25.3°C | 24.7°C / 76.5°F |
| November | 25.6–26.3°C | 25.9°C / 78.6°F |
| December | 26.2–28.1°C | 27.0°C / 80.6°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (-20.46, 57.79). 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.
Blue Bay in January
Typical January water temperature near Blue Bay is 27.8°C (82.0°F), with yearly monthly means from 27.1–28.5°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: December 27.0°C · February 27.6°C.
Explore Blue Bay sea temperature in January, including swim comfort and month comparisons →
Blue Bay in February
Typical February water temperature near Blue Bay is 27.6°C (81.7°F), with yearly monthly means from 27.5–27.7°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: January 27.8°C · March 28.2°C.
Explore Blue Bay sea temperature in February, including swim comfort and month comparisons →
Blue Bay in March
Typical March water temperature near Blue Bay is 28.2°C (82.8°F), with yearly monthly means from 27.8–28.9°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: February 27.6°C · April 28.0°C.
Explore Blue Bay sea temperature in March, including swim comfort and month comparisons →
Blue Bay in April
Typical April water temperature near Blue Bay is 28.0°C (82.4°F), with yearly monthly means from 27.6–28.3°C.
Swimming and snorkeling: very warm water. Swimwear is usually enough; a rash guard adds sun protection.
Adjacent months: March 28.2°C · May 27.0°C.
Explore Blue Bay sea temperature in April, including swim comfort and month comparisons →
Blue Bay in May
Typical May water temperature near Blue Bay is 27.0°C (80.6°F), with yearly monthly means from 26.2–27.7°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: April 28.0°C · June 25.6°C.
Explore Blue Bay sea temperature in May, including swim comfort and month comparisons →
Blue Bay in June
Typical June water temperature near Blue Bay is 25.6°C (78.1°F), with yearly monthly means from 25.1–26.1°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: May 27.0°C · July 24.6°C.
Explore Blue Bay sea temperature in June, including swim comfort and month comparisons →
Blue Bay in July
Typical July water temperature near Blue Bay is 24.6°C (76.3°F), with yearly monthly means from 24.2–24.8°C.
Swimming and snorkeling: mild water. A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
Adjacent months: June 25.6°C · August 24.1°C.
Explore Blue Bay sea temperature in July, including swim comfort and month comparisons →
Blue Bay in August
Typical August water temperature near Blue Bay is 24.1°C (75.4°F), with yearly monthly means from 23.6–24.6°C.
Swimming and snorkeling: mild water. A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
Adjacent months: July 24.6°C · September 24.2°C.
Explore Blue Bay sea temperature in August, including swim comfort and month comparisons →
Blue Bay in September
Typical September water temperature near Blue Bay is 24.2°C (75.6°F), with yearly monthly means from 23.9–24.5°C.
Swimming and snorkeling: mild water. A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
Adjacent months: August 24.1°C · October 24.7°C.
Explore Blue Bay sea temperature in September, including swim comfort and month comparisons →
Blue Bay in October
Typical October water temperature near Blue Bay is 24.7°C (76.5°F), with yearly monthly means from 24.3–25.3°C.
Swimming and snorkeling: mild water. A rash guard is useful; cold-sensitive snorkelers may prefer a shorty wetsuit.
Adjacent months: September 24.2°C · November 25.9°C.
Explore Blue Bay sea temperature in October, including swim comfort and month comparisons →
Blue Bay in November
Typical November water temperature near Blue Bay is 25.9°C (78.6°F), with yearly monthly means from 25.6–26.3°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: October 24.7°C · December 27.0°C.
Explore Blue Bay sea temperature in November, including swim comfort and month comparisons →
Blue Bay in December
Typical December water temperature near Blue Bay is 27.0°C (80.6°F), with yearly monthly means from 26.2–28.1°C.
Swimming and snorkeling: warm water. Most people are comfortable in swimwear or a light rash guard.
Adjacent months: November 25.9°C · January 27.8°C.
Explore Blue Bay 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 | 25.1°C / 77.2°F | 25.6°C / 78.0°F | 26.3°C / 79.3°F |
| July | 24.9°C / 76.8°F | 25.1°C / 77.1°F | 25.6°C / 78.1°F |
| August | 24.4°C / 75.9°F | 24.6°C / 76.3°F | 25.2°C / 77.4°F |
| September | 24.2°C / 75.6°F | 24.4°C / 76.0°F | 25.0°C / 77.0°F |
| October | 24.3°C / 75.7°F | 24.6°C / 76.3°F | 25.7°C / 78.3°F |
| November | 25.1°C / 77.2°F | 25.8°C / 78.5°F | 26.4°C / 79.5°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 Blue Bay
Marine park lagoon with shallow coral and brilliant clear turquoise water.
- Area
- Grand Port
Blue Bay Water Temperature: Common Questions
What is the water temperature in Blue Bay today?
The current sea surface temperature near Blue Bay is 26.0°C (78.8°F). Over the last 30 days, the average has been 24.9°C.
When is the water warmest in Blue Bay?
The water is typically warmest in March, at around 28.2°C (82.8°F) in the 2022–2025 historical baseline.
When is the water coldest in Blue Bay?
The water is typically coldest in August, at around 24.1°C (75.4°F) in the same historical baseline.
Can you swim in Blue Bay today?
At 26.0°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 Blue Bay.
View Snorkel Forecast →