Mahé Water Temperature
Updated Thu 13:56 (Indian/Mahe)
Seychelles · Forecast updated Sep 24, 2026, 13:56 UTC
Current Sea Temperature
28.7°C
83.7°F
Very warm water
Valid Sep 24, 2026, 13:56 (Indian/Mahe). Source: stored Open-Meteo marine forecast. Temperature is not a safety rating or snorkel score.
Versus this month's average
1.9°C above
The typical September average is 26.8°C (80.2°F) from the historical baseline.
Recent trend
Holding fairly steady
Seven-day average: 28.4°C, versus 28.3°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 Mahé, typical monthly averages range from about 26.1°C (79.0°F) in August to 30.4°C (86.7°F) in April.
Over the past 30 days, the average sea temperature in Mahé has been 28.1°C.
Historical baseline (full year)
Southern Hemisphere. Summer is generally December–February; winter is June–August.
Typical monthly sea-surface temperature near Mahé, calculated from hourly observations for 2023–2025. This is not this site's forecast archive.
| Month | Typical range | Average |
|---|---|---|
| January | 28.4–29.5°C | 28.8°C / 83.8°F |
| February | 28.6–30.2°C | 29.4°C / 84.9°F |
| March | 29.8–30.4°C | 30.0°C / 86.0°F |
| April | 30.2–30.6°C | 30.4°C / 86.7°F |
| May | 29.1–29.9°C | 29.5°C / 85.1°F |
| June | 27.2–28.5°C | 27.7°C / 81.9°F |
| July | 26.2–26.5°C | 26.3°C / 79.3°F |
| August | 25.6–26.5°C | 26.1°C / 79.0°F |
| September | 25.7–27.5°C | 26.8°C / 80.2°F |
| October | 26.8–28.1°C | 27.7°C / 81.9°F |
| November | 28.2–29.7°C | 28.9°C / 84.0°F |
| December | 27.9–29.7°C | 28.9°C / 84.0°F |
Source: Open-Meteo Marine API, MeteoFrance sea-surface temperature dataset. Nearest sea grid cell (-4.71, 55.46). 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.
Mahé in January
Typical January water temperature near Mahé is 28.8°C (83.8°F), with yearly monthly means from 28.4–29.5°C.
Mahé in February
Typical February water temperature near Mahé is 29.4°C (84.9°F), with yearly monthly means from 28.6–30.2°C.
Mahé in March
Typical March water temperature near Mahé is 30.0°C (86.0°F), with yearly monthly means from 29.8–30.4°C.
Mahé in April
Typical April water temperature near Mahé is 30.4°C (86.7°F), with yearly monthly means from 30.2–30.6°C.
Mahé in May
Typical May water temperature near Mahé is 29.5°C (85.1°F), with yearly monthly means from 29.1–29.9°C.
Mahé in June
Typical June water temperature near Mahé is 27.7°C (81.9°F), with yearly monthly means from 27.2–28.5°C.
Mahé in July
Typical July water temperature near Mahé is 26.3°C (79.3°F), with yearly monthly means from 26.2–26.5°C.
Mahé in August
Typical August water temperature near Mahé is 26.1°C (79.0°F), with yearly monthly means from 25.6–26.5°C.
Mahé in September
Typical September water temperature near Mahé is 26.8°C (80.2°F), with yearly monthly means from 25.7–27.5°C.
Mahé in October
Typical October water temperature near Mahé is 27.7°C (81.9°F), with yearly monthly means from 26.8–28.1°C.
Mahé in November
Typical November water temperature near Mahé is 28.9°C (84.0°F), with yearly monthly means from 28.2–29.7°C.
Mahé in December
Typical December water temperature near Mahé is 28.9°C (84.0°F), with yearly monthly means from 27.9–29.7°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 | 25.9°C / 78.6°F | 26.7°C / 80.1°F | 27.8°C / 82.0°F |
| July | 25.9°C / 78.6°F | 26.8°C / 80.3°F | 27.4°C / 81.3°F |
| August | 26.7°C / 80.1°F | 27.4°C / 81.3°F | 28.0°C / 82.4°F |
| September | 27.6°C / 81.7°F | 28.2°C / 82.8°F | 28.7°C / 83.7°F |
Partial coverage: 4 calendar months with records. Profile calculated from 2782 hourly forecast records across 4 monthly periods. This is a growing archive, not a long-term climate normal.
About the water at Mahé
Main granite island with Ste Anne Marine Park and clear reef-fringed bays.
- Area
- Mahé
Mahé Water Temperature: Common Questions
What is the water temperature in Mahé today?
The current sea surface temperature near Mahé is 28.7°C (83.7°F). Over the last 30 days, the average has been 28.1°C.
When is the water warmest in Mahé?
The water is typically warmest in April, at around 30.4°C (86.7°F) in the 2023–2025 historical baseline.
When is the water coldest in Mahé?
The water is typically coldest in August, at around 26.1°C (79.0°F) in the same historical baseline.
Can you swim in Mahé today?
At 28.7°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 Mahé.
View Snorkel Forecast →