Cousin Island — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Cousin Island (Seychelles). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Cousin Island help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Cousin Island in the Indian Ocean today is 29°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature is above 82°F (28°C). This is very warm water, which may feel almost hot to most people. Swimming in such conditions is perfect for those seeking relaxation and comfort in the water. These waters are often preferred for relaxation in hot weather, as the water temperature does not cool the body significantly. However, it is important to remember that in such warm waters, caution is necessary, as prolonged exposure without rest can lead to overheating.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Water temperature in Cousin Island has risen over the last week and month. Currently, the sea water at this location is slightly warmer than average for this day in previous years.
According to our forecast, Water temperature in Cousin Island will be 27.9°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| SEP 12 | 28.3°C | 27.0°C | |
| SEP 13 | 28.3°C | 27.0°C | |
| SEP 14 | 28.4°C | 27.0°C | |
| SEP 15 | 28.6°C | 27.3°C | |
| SEP 16 | 28.7°C | 27.3°C | |
| SEP 17 | 28.6°C | 27.0°C | |
| SEP 18 | 28.7°C | 27.3°C | |
| SEP 19 | 28.7°C | 26.8°C | |
| SEP 20 | 28.7°C | 26.8°C | 28.7°C |
| SEP 21 | 26.8°C | 28.6°C | |
| SEP 22 | 26.5°C | 28.5°C | |
| SEP 23 | 26.8°C | 28.3°C | |
| SEP 24 | 26.3°C | 28.2°C | |
| SEP 25 | 27.0°C | 28.1°C | |
| SEP 26 | 27.5°C | 28.0°C | |
| SEP 27 | 27.0°C | 27.9°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Cousin Island, a compact nature reserve close to Praslin in the Seychelles, is renowned for its bird colonies, turtle nesting sites and surrounding coral reefs rather than for expansive sandy shores. The waters around the island are tropical and remain comfortably warm throughout the year, typically ranging from about 26°C in the cooler months to around 29°C in the warmer season. Seasonal variation is modest: the coolest seawater temperatures tend to occur with the southeast trade winds in July and August, while the warmest surface waters are usually felt in the late summer and early autumn months around March and April. Water clarity is often good due to the reef protection and limited human activity, which supports a healthy marine environment.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 27°C | 28°C | 31°C |
| February | 27°C | 29°C | 31°C |
| March | 28°C | 30°C | 31°C |
| April | 28°C | 30°C | 32°C |
| May | 27°C | 30°C | 31°C |
| June | 26°C | 28°C | 30°C |
| July | 25°C | 27°C | 29°C |
| August | 24°C | 26°C | 28°C |
| September | 25°C | 27°C | 29°C |
| October | 26°C | 28°C | 30°C |
| November | 26°C | 29°C | 31°C |
| December | 26°C | 29°C | 31°C |
* Click on a month to view detailed water temperature data.
Cousin Island: Weather Forecast
September 20
September 21
September 22
September 23
Location, Beaches & Local Information
Nearby Beaches & Facilities
Anse Kerlan
Petite Anse Of Kerlan
Anse Georgette
Anse Lazio
Petite Anse Lazio
Fond De L'Anse
Anse Citron
Smoon Island
Anse Pasquiere
Swimming Conditions
Swimming and snorkeling around Cousin Island can be rewarding but are shaped by its status as a strict conservation area. Access is generally controlled and visits are guided, so swimming opportunities are limited and regulated to protect nesting turtles and breeding birds; visitors should expect to follow rules about where they may enter the water and how they behave near wildlife. Where permitted, the sheltered reef lagoons offer calm, clear conditions for snorkeling and short swims, with abundant fish and healthy coral to observe. For a traditional beach holiday with extensive swimming and sunbathing options, nearby larger islands such as Praslin or La Digue provide wider sandy beaches, while Cousin remains best appreciated as a managed, wildlife-focused marine experience.