Zanzibar Islands

The best time to visit Tanzania’s beaches

October 4, 2025 • 3 min read

When to Visit Tanzania’s Stunning Beaches

Tanzania’s Indian Ocean islands—Zanzibar, Mafia, Pemba, and Thanda—offer pristine beaches, perfect for unwinding after a Kilimanjaro climb or safari. Unlike traditional seasons, Tanzania has dry and rainy periods, each with unique advantages. Kilisherpas Travel, with 20,000+ Kilimanjaro ascents since 2021, guides you on the best time to visit these islands for your 2025 beach getaway.


Tanzania’s Beach Seasons: A Breakdown

Tanzania’s equatorial climate means warm weather year-round (25–32°C/77–90°F), but dry and rainy seasons affect crowds, activities, and costs. Here’s a quick guide:


PeriodWeatherCrowdsHighlightsDec–FebHot, DryBusyPeak beach weather, clear waters, festive vibe (Christmas/New Year’s).Mar–MayHot, RainyLess BusyOff-season discounts, fewer crowds, rain often brief (mornings or scattered).JuneCool, DryLess BusyPleasant for diving/snorkeling, quieter than peak season.July–AugCool, DryBusyIdeal for water activities, vibrant atmosphere, book early.SeptWarm, DryBusyWarm, clear skies, great for beach and cultural tours.Oct–NovWarm, RainyLess BusyShort, heavy rains; discounts and fewer tourists.

Kilisherpas Tip: Book 6–12 months ahead for Dec–Feb and July–Aug to secure top hotels, especially in Zanzibar.

Best Time for Specific Activities

Swimming with Whale Sharks (Mafia Island)

  • When: November–early March.
  • Why: Whale sharks (up to 18–20m) migrate to Mafia’s plankton-rich waters between the island and mainland Tanzania.
  • Details: Kilisherpas Travel partners with expert dive operators for safe, sustainable whale shark excursions. Mafia’s reefs also offer world-class diving.
  • Tip: Book in November for fewer crowds and optimal sightings.

Diving and Snorkeling

  • When: June–September (cool, dry) or December–February (hot, dry).
  • Why: Clear waters and calm seas enhance visibility for Zanzibar, Mafia, and Pemba’s coral reefs.
  • Tip: Mafia and Pemba are best for experienced divers; Zanzibar suits beginners.

Cultural Tours (Zanzibar’s Stone Town)

  • When: Year-round, but March–May and October–November offer quieter visits.
  • Why: Explore UNESCO-listed Stone Town’s history, spice markets, and architecture without peak-season crowds.
  • Tip: Dress modestly (cover shoulders, knees) during Ramadan (check 2025 dates).

Budget-Friendly Travel

  • When: March–May and October–November (rainy seasons).
  • Why: Hotels offer 30–50% discounts, and islands like Zanzibar and Mafia are less crowded.
  • Tip: Pack a lightweight rain jacket; rains are often brief, leaving sunny afternoons.

Luxury and Privacy (Thanda, Pemba)

  • When: June or September for quieter dry-season visits.
  • Why: Thanda’s private island and Pemba’s three hotels ensure seclusion.
  • Tip: Thanda’s villa (~$10,000+/night) is ideal for exclusive groups; book early.

Rainy Season: Why It’s Still Worth It

Don’t shy away from March–May or October–November. Rainy seasons offer:

  • Discounts: Save up to 50% on hotels, including Zanzibar’s luxury resorts.
  • Fewer Crowds: Enjoy serene beaches and private experiences on Mafia or Pemba.
  • Indoor Alternatives: Visit Stone Town’s museums, spice plantations, or historical caves (e.g., Zanzibar’s slave trade caves).
  • Weather Reality: Rain is often short (mornings or a few days), with sunny periods.


Why Plan with Kilisherpas Travel?

Pair your beach vacation with a Kilimanjaro climb or safari for a seamless Tanzania adventure:

  • Tailored Itineraries: Combine an 8-day Lemosho climb with a 3–5-day island escape (see 8-Day Lemosho Route).
  • Logistics: Flights from Arusha/Moshi to Zanzibar (1 hour) or Mafia/Pemba (1.5–2 hours).
  • Expert Guides: Cultural insights for respectful travel, especially in Zanzibar.

Ready for Your Tanzanian Beach Vacation?

Whether you crave Zanzibar’s vibrancy, Mafia’s whale sharks, Pemba’s serenity, or Thanda’s luxury, there’s a perfect time to visit Tanzania’s beaches. Kilisherpas Travel crafts unforgettable island getaways for 2025. Book now or explore our hiking tours.

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Zanzibar Islands

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