Last updated: 26 June 2026 — season data and legal window confirmed against current Mauritius Tourism Authority regulations.
Quick answer
The best time for dolphin watching in Mauritius is any month of the year — spinner and bottlenose dolphins are resident on the west coast year-round. Sea conditions are calmest from April to October. December to February is cyclone season and carries the most cancellation risk. The time of day matters far more than the month: the Mauritius Tourism Authority only permits dolphin swimming between 7am and 10am, and a 7am departure beats a 9:30am departure in any season.
There is no off-season for dolphins
This is the part most people get wrong. They search for a dolphin season the way they would for whales. There is not one. The spinner and bottlenose pods live here all year on the west coast — Tamarin Bay, Black River, Flic en Flac, Le Morne. January or July, they are there every morning.
What changes through the year is the general weather and sea conditions, not the dolphins. Plan around conditions, not presence.
Month-by-month breakdown
- January–February: Cyclone season peak. Warmest water (25–28°C). Most tour cancellations. Build in flexibility. Still possible on calm mornings.
- March: Cyclone risk tapering off. Conditions improving. Quieter travel period — good value.
- April–May: Conditions improving rapidly. Start of the calmer window. Water cools to 22–24°C. Excellent dolphin trips.
- June–July: Best of the year for South African families. Dry season, calm sea, SA winter school holidays. Whale season starts. Book well ahead.
- August–September: Peak whale season (humpbacks). Dolphin trips run every morning. Slight cooling wind but reliable calm mornings. Best dolphin + whale combination window.
- October–November: Whale season ends (October). Conditions still good. Less crowded than June–August. Good shoulder season option.
- December: Start of cyclone season. Still possible but build in backup days. Summer heat returning.
The legal time window — 7am to 10am only
This is critical: the Mauritius Tourism Authority Regulations Act only permits in-water dolphin swimming between 7am and 10am. Any operator departing for a "dolphin swim" after this window is outside the law. Within the permitted window, the earlier the better — 7am means flat water, relaxed pods, and few other boats. By 9:30am the wind has built and the pods have moved out deeper.
Time of day beats time of year
Every day there is a window. Sunrise to mid-morning the sea is flat and the pods rest close to shore. By late morning the trade winds build, the surface chops up, and the dolphins move out. A July sunrise trip beats a January mid-morning trip. Whatever month you are travelling, book the earliest departure available.
Stacking with whale season (June–September)
If you also want whales, June to September is the overlap window. Humpback whales migrate through from June to September. Sperm whales and pilot whales are resident year-round. In this window, some operators combine a morning dolphin swim with a whale watch in the same trip — you see dolphins on the calm early water, then head out to deep water for the whales. This also lines up with South African winter school holidays, which makes June and July the busiest and best-value booking window for SA families.
Cyclone season: the honest picture (December–February)
Tours still run in December to February — often on perfect, flat mornings. But cancellation rates are significantly higher than the rest of the year. A cyclone does not sit over Mauritius for weeks; it passes. But the days before and after a system bring rough seas and poor visibility. If you are travelling in this window, confirm the operator's reschedule policy before you book, and keep at least one spare morning free. January carries the most cyclone risk of any single month.
→ Full guide including prices, regulations, species and ethical operator list: Swimming with Dolphins in Mauritius — The Complete Guide 2026
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