What’s the Weather Like in Zanzibar Year-Round?

Zanzibar — a name that instantly evokes images of turquoise waters, swaying palm trees, white sand beaches, and the scent of cloves carried on a warm tropical breeze. This idyllic island archipelago, lying off the coast of Tanzania, has long been one of East Africa’s most alluring destinations. But beyond its rich history, vibrant culture, and breathtaking scenery, one question often lingers in the minds of travelers planning their trip: what’s the weather like in Zanzibar throughout the year?

Understanding Zanzibar’s climate is essential for planning the perfect island escape. The good news is that Zanzibar enjoys a warm, tropical climate year-round, making it an inviting destination at almost any time of the year. However, seasonal variations — including rainfall, humidity, and wind patterns — can influence when and how you enjoy its beaches, diving, spice tours, and cultural experiences.

Let’s take a closer look at Zanzibar’s weather month by month, so you can decide the best time to visit and what to expect during your stay on this Indian Ocean paradise.

The Climate Overview

Zanzibar lies just south of the equator, about 25 to 50 kilometers off the Tanzanian mainland. Its tropical climate is moderated by the surrounding ocean, which keeps temperatures pleasantly warm and relatively stable year-round. Average daytime temperatures typically range from 26°C to 32°C (79°F to 90°F), while nighttime temperatures rarely drop below 20°C (68°F).

The island experiences two main seasons — the dry season and the rainy season — each influenced by the monsoon winds that sweep across the Indian Ocean. These winds not only affect rainfall but also shape the island’s sailing, diving, and beach conditions.

In general, Zanzibar’s climate can be divided into four main periods:

• Long Dry Season: June to October

• Short Rainy Season: November to December

• Short Dry Season: January to February

• Long Rainy Season: March to May

Now let’s explore what each of these seasons brings to the island.

The Long Dry Season (June to October)

From June through October, Zanzibar enjoys its most popular and pleasant weather of the year. This is the coolest and driest period, with temperatures averaging between 25°C and 29°C (77°F – 84°F). Humidity levels drop, skies are clear, and a gentle sea breeze keeps the air refreshing.

This is the perfect time for beach vacations, snorkeling, and diving. The ocean waters are calm and crystal-clear, providing excellent visibility for coral reefs and marine life encounters. Whether you’re exploring Mnemba Atoll, relaxing at Nungwi Beach, or taking a traditional dhow cruise at sunset, the conditions are ideal.

It’s also a great time for cultural exploration. Stone Town, with its maze-like alleys and historical charm, is more comfortable to explore without the high humidity of the wet season. Spice tours, dolphin excursions, and day trips to nearby islands like Prison Island and Chumbe Island are all at their best during these months.

Because this is Zanzibar’s peak tourist season, it’s wise to book accommodations and activities in advance. The weather during this period mirrors that of Tanzania’s mainland, making it perfect for combining a beach escape with a wildlife safari in the Serengeti or Ngorongoro Crater.

The Short Rainy Season (November to December)

After months of dry weather, Zanzibar transitions into the short rainy season in November and December. These rains are brief and typically come as tropical showers in the afternoon or at night, rather than all-day downpours. Temperatures rise slightly, averaging 28°C to 32°C (82°F – 90°F), with humidity levels increasing.

Despite the rain, this is still a great time to visit Zanzibar. The showers tend to refresh the landscape, making it greener and more vibrant. The crowds thin out compared to the high season, and accommodation rates drop slightly, offering better value for travelers.

It’s also a wonderful time for photography, as the skies become dramatic and sunsets over the Indian Ocean take on deeper hues. Between showers, you’ll still enjoy plenty of sunshine for beach walks, snorkeling, or exploring local markets.

The sea remains warm, and marine life flourishes. Divers and snorkelers can still expect excellent underwater visibility, particularly around the northern and eastern coasts.

The Short Dry Season (January to February)

The short dry season, spanning January and February, offers another window of perfect beach weather before the onset of the long rains. Temperatures climb slightly higher, ranging from 29°C to 33°C (84°F – 91°F), and the humidity remains manageable thanks to steady coastal breezes.

This period is considered Zanzibar’s second-best season for travel. The sea is calm, the skies are blue, and the island feels alive with energy. Local festivals and events, such as the Sauti za Busara Music Festival, often take place in February, adding a cultural flair to your visit.

It’s a particularly good time for honeymooners and couples seeking romantic getaways — think candlelit dinners on the beach, private dhow rides, and snorkeling adventures in pristine lagoons.

While temperatures can feel hot around midday, mornings and evenings remain delightful. Pack light, breathable clothing, and don’t forget sun protection — sunscreen, hats, and sunglasses are essential.

The Long Rainy Season (March to May)

From March to May, Zanzibar enters its long rainy season, characterized by heavier and more consistent rainfall. These months are the least popular for tourists due to the increased chance of storms and humid conditions. Temperatures remain warm, averaging 27°C to 31°C (81°F – 88°F), but humidity can rise significantly.

Rainfall is often intense but intermittent — heavy showers followed by periods of sunshine. The sea may become rougher, and some smaller lodges or beach resorts close temporarily for maintenance. However, for travelers who don’t mind a bit of rain, this season has its own appeal.

The landscape bursts into life with lush greenery, the air feels clean and fresh, and birdwatching becomes exceptional as migratory species arrive. The island is quieter, prices drop, and you can enjoy a more private experience at top resorts that remain open year-round.

For those seeking a tranquil retreat, this can be an ideal time to visit — just bring a good book, a light rain jacket, and an appreciation for the slower pace of island life.

Monthly Breakdown of Zanzibar’s Weather

• January: Warm, sunny, and dry — perfect for beach lovers.

• February: Hot and breezy with minimal rainfall.

• March: Start of the rainy season; humidity increases.

• April: Wettest month; heavy rainfall, but lush landscapes.

• May: Continued rains, occasional sunny breaks.

• June: Beginning of the dry season; mild temperatures and clear skies.

• July: Cool, dry, and ideal for travel.

• August: Peak tourist month with stable weather and calm seas.

• September: Warm and pleasant, fewer crowds than August.

• October: Transition month with occasional showers and lush scenery.

• November: Short rains begin; still plenty of sunshine.

• December: Light rains taper off, festive season begins.

Sea Conditions and Activities Year-Round

Zanzibar’s Indian Ocean waters remain inviting all year, with sea temperatures averaging 25°C to 29°C (77°F – 84°F). The best visibility for diving and snorkeling is during the dry months (June to October and January to February), but even during the rains, underwater experiences remain enjoyable, particularly off Mnemba Atoll and the Pemba Channel.

The island’s wind patterns are also worth noting. The Kaskazi wind (from the northeast) blows between December and March, while the Kusi wind (from the southeast) dominates from June to October. These winds influence water conditions — Kaskazi brings slightly warmer seas, while Kusi cools them and makes for great kite-surfing weather along Paje and Jambiani beaches.

When Is the Best Time to Visit Zanzibar?

The “best” time depends on your preferences.

• For perfect beach weather: June to October and January to February are ideal.

• For diving and snorkeling: Visibility is best from July to September and January to March.

• For cultural experiences: February (Sauti za Busara Festival) and July (Zanzibar International Film Festival) are lively and vibrant.

• For budget travelers: March to May offers lower prices and fewer tourists.

Ultimately, Zanzibar is a year-round destination. Even during the rainy months, the sun often reappears, and the island’s beauty never fades.

Experience Zanzibar with Muhiga Safaris

No matter the season, Zanzibar promises warmth, color, and tranquility that few places on Earth can match. Whether you want to stroll through Stone Town’s spice-scented alleys, dive with dolphins in Mnemba Atoll, or simply unwind on the powdery sands of Nungwi, choosing the right travel partner can make all the difference.

Muhiga Safaris specializes in crafting unforgettable journeys across East Africa, including seamless beach escapes to Zanzibar. Their expert team understands the rhythms of the island’s seasons and can design the perfect itinerary to match your preferred travel dates — from honeymoon retreats to cultural adventures and luxury relaxation.

After your wildlife safari in Tanzania, Uganda, or Kenya, let Muhiga Safaris whisk you away to the island’s turquoise shores, where the sound of the ocean and the scent of spices will leave you enchanted.

Book your Zanzibar experience with Muhiga Safaris today — and discover how every season on this island tells a new story, each as beautiful as the last.