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A.Savin FAL Wikimedia Commons

Marianne Island

Island

A small islet in the Seychelles reached by boat from Mahé, popular for day‑trip snorkeling, seabird observation and short beach outings.

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In this guide

Marianne Island essentials

Address: Marianne Island, Seychelles (Sainte Anne Marine Park area)
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About Marianne Island

Marianne Island is a small island in the Seychelles archipelago. It is uninhabited and part of the island nation’s offshore island groupings.

The island is used as a habitat for seabirds and coastal flora and may be visited for wildlife observation and coastal scenery when visits are permitted. It is not a populated or developed tourist destination.

Marianne Island has no permanent settlement and has remained largely natural in character; it has been mentioned in charts and records of the Seychelles but does not have a recorded history of major construction or long-term habitation.

Situated in the Seychelles island chain in the Indian Ocean, the island lies among the outer islands of the republic and is accessible only by private boat from the main islands.

Things to Do
When to Go

Best Time to Visit Marianne Island

Both main Seychelles seasons are suitable; the choice depends on whether visitors prioritize calmer seas or drier air.

Warm season
November-April · 25-30°C
Warm seas-good for snorkeling though short afternoon showers possible.
Cool season
May-October · 23-28°C
Drier and cooler with more stable wind conditions.

Weather & Climate near Marianne Island

Climate

Tropical climate with consistently warm temperatures year-round. Temperatures range from 24°C to 31°C. Heavy rainfall (2285 mm/year), wettest in January.

Air Quality: AQI 20 Good
Best Time to Visit
JuneMarchMay
Temperature & Rainfall
Temperature Range
31°
Warmest Month
24°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January Very Good 25° - 30° 30° 371 mm partly cloudy 82% 3.7 m/s 2.5 extreme 12.2h
February Very Good 25° - 30° 31° 273 mm partly cloudy 80% 4.1 m/s 2.8 extreme 12.1h
March Very Good 25° - 31° 32° 188 mm partly cloudy 78% 3.6 m/s 2.8 extreme 12.0h
April Very Good 25° - 31° 32° 176 mm some cloud 77% 3.6 m/s 2.6 extreme 11.9h
May Very Good 26° - 31° 32° 152 mm partly cloudy 80% 4.6 m/s 2.2 extreme 11.8h
June Very Good 25° - 29° 27° 93 mm partly cloudy 82% 5.8 m/s 2.0 very high 11.7h
July Very Good 24° - 28° 26° 83 mm partly cloudy 83% 6.2 m/s 2.1 extreme 11.8h
August Very Good 24° - 28° 26° 129 mm partly cloudy 82% 6.4 m/s 2.3 extreme 11.9h
September Very Good 25° - 29° 27° 140 mm partly cloudy 81% 5.7 m/s 2.5 extreme 12.0h
October Very Good 25° - 29° 27° 186 mm partly cloudy 80% 4.4 m/s 2.7 extreme 12.1h
November Very Good 24° - 30° 30° 208 mm partly cloudy 80% 3.7 m/s 2.7 extreme 12.2h
December Very Good 24° - 30° 30° 286 mm partly cloudy 81% 3.7 m/s 2.6 extreme 12.3h
Getting There & Around

How to Get to Marianne Island

Marianne Island is reachable by private boat or day‑trip charter from Mahé or Praslin; many excursions that include the Sainte Anne Marine Park also stop at smaller islets. Arrange landings through licensed operators and check marine park rules.

Tips for Visiting Marianne Island

  • Day visitors should arrive on early boats to maximise time on the island-landing slots are limited.
  • Respect nesting bird colonies and obey any local conservation signage-many islets here are important bird habitats.
  • Bring snorkeling gear if tides and boat operators permit; clear water and granite formations make for pleasant exploration.