Best Time to Visit Zanzibar
The best time to visit Zanzibar is September. You get the perfect intersection of dry weather, cooling breezes, and moderate prices before the holiday rush. The heavy rains have ended, the humidity is low, and the ocean is clear for diving. Temperatures hover around 28°C (82°F), making it comfortable for both Stone Town walking tours and beach lounging. While July and August offer similar weather, September sees slightly fewer tourists, giving you more space on the sand. If you want guaranteed sun without the peak-season price tag of December, book your trip for September.
Month by Month breakdown
January
January is hot and humid. Expect daytime temperatures around 32°C (90°F). This is the "short dry season," so rain is rare. The ocean is calm and crystal clear, ideal for snorkeling at Mnemba Atoll. High season is in full swing, meaning prices for luxury resorts are at their peak. It is a prime month for deep-sea fishing as billfish move through the waters.
February
February is the hottest month in Zanzibar. Temperatures often exceed 33°C (91°F). The humidity is high, so stay at a resort with strong air conditioning or a reliable sea breeze. Crowds remain steady but start to thin toward the end of the month. Water visibility is excellent, often reaching 30 meters. This is the best time to see whale sharks off the coast of nearby Mafia Island.
March
The weather transitions in March. Early March is dry, but the "long rains" typically begin mid-month. Temperatures stay warm at 31°C (88°F). Humidity levels rise significantly. Prices start to drop as the rainy season approaches. If you visit in early March, you can catch the end of the kaskazi wind season, which is great for kiteboarding in Paje.
April
April is the wettest month. Expect heavy, torrential downpours that can last for several hours. Highs average 30°C (86°F). Many smaller lodges and boutique hotels close for maintenance during this time. Those that stay open offer the lowest rates of the year. Avoid April if you want a traditional beach holiday, as the humidity and mud make outdoor activities difficult.
May
The long rains continue through May, though they begin to taper off toward the end of the month. Temperatures cool slightly to 29°C (84°F). The landscape is lush and green, but the ocean remains murky due to runoff. Flights and accommodation are very cheap. It is a quiet month; you will have major sites like the Jozani Forest almost entirely to yourself.
June
June marks the start of the long dry season. The rains stop, and the air becomes crisp and cool. Daytime temperatures are a comfortable 28°C (82°F). This is the beginning of the peak tourist season. The "Kusi" south wind picks up, making it the start of the prime kiteboarding season in Paje and Jambiani. Prices start to climb back to standard rates.
July
July is one of the most popular months to visit Tanzania. The weather is dry and sunny with highs of 28°C (82°F) and cool evenings. Expect large crowds in Stone Town and Nungwi. Prices for flights and hotels are high. In July, you can attend the Festival of the Dhow Countries (Zanzibar International Film Festival), the largest cultural event in East Africa.
August
August offers perfect safari and beach weather. It is dry, the humidity is low, and temperatures stay around 29°C (84°F). This is peak season for European travelers on summer break. Expect fully booked hotels and busy restaurants. It is an excellent time for seeing giant tortoises on Prison Island, as the paths are dry and the walking is easy.
September
September is the sweet spot for Zanzibar travel. The weather remains dry and temperatures rise slightly to 30°C (86°F). The wind dies down, resulting in flat, glassy water—perfect for scuba diving and stand-up paddleboarding. Crowds are thinner than in July or August. Prices are more competitive, making it the best value month for high-end luxury stays.
October
October is warm and dry with temperatures averaging 30°C (86°F). The "short rains" may start at the very end of the month, but they rarely interrupt plans. This is the last month of absolute peak visibility for divers. It is also a great time to visit the spice plantations, as many crops are nearing harvest and the aromas are at their peak.
November
November sees the arrival of the "short rains." These are usually brief afternoon thunderstorms that clear up quickly. Temperatures are around 31°C (88°F). Prices dip slightly between the October and December rushes. It is a good month for birdwatching as migratory species begin to arrive from Europe and North Africa.
December
December is hot and busy. Temperatures reach 32°C (90°F). The short rains end mid-month, leading into a very dry and sunny Christmas period. Expect maximum prices and "minimum stay" requirements at most beach resorts. The island is festive, with plenty of beach parties and events. Book at least six months in advance if you plan to visit during the holidays.
Cheapest time to visit Zanzibar
The cheapest time to visit Zanzibar is during the long rainy season, specifically April and May.
Because of the heavy daily rainfall, demand for tourism collapses. Major airlines often run seat sales to Dar es Salaam or Zanzibar (ZNZ) to fill planes. Luxury resorts that stay open frequently offer "stay 4, pay 3" deals or slash their nightly rates by 40-50% compared to January prices.
If you don't mind rain and higher humidity, you can experience five-star properties for three-star prices. Just be aware that some restaurants and excursion operators shut down entirely during these two months. If you want a budget trip with better weather, aim for the shoulder months of March or November.
When to avoid Zanzibar
You should avoid Zanzibar from mid-March to late May.
This is the peak of the "Masika" rains. Unlike the short tropical bursts seen in November, the long rains in April and May can be relentless. You may experience days without sun, which makes the island’s primary draw—the beaches—unusable.
Furthermore, the humidity during this period is oppressive, often hovering near 100%. Unpaved roads in rural areas can become muddy and difficult to navigate. If your goal is a classic sun-and-sand holiday, these months will likely disappoint. Additionally, the ocean visibility for snorkeling and diving is at its worst due to silt and runoff.
Best time for good weather
For the most reliable, "perfect" island weather, visit between July and September.
- Humidity: Lowest of the year.
- Rainfall: Minimal to zero.
- Temperature: Steady 28°C to 30°C.
During these months, the heat is tempered by sea breezes, making it comfortable to explore the narrow alleys of Stone Town without overheating. The sky is consistently blue, which is essential if you are traveling to Zanzibar for photography or drone videography. If you prefer higher heat with your dry weather, January and February are the best alternatives, though the humidity is significantly higher.
Best time for fewer crowds
To avoid the crowds, visit in June or October.
These months sit on the edges of the peak seasons. In June, the rains have just finished, but the bulk of the July/August travelers haven't arrived yet. The island is fresh and green, and the beaches are quiet.
In October, the European summer rush has ended, and the December holiday travelers are still home. You get the benefits of peak-season weather—clear water and sunny skies—but you won't have to fight for a sun loungers at Nungwi or Kendwa. You can often book excursions like the Safari Blue boat trip on short notice without worrying about being packed onto a crowded dhow.