Zanzibar in September is a good time to visit if you are looking for white sand beaches, warm ocean water and lots of sunshine. September is close to the end of the long dry season and there will be warm days, very little rain and fine weather for exploring the island.
It’s also a beautiful month to enjoy the Indian Ocean. There are places you can swim, snorkel, sail along the coast and enjoy Stone Town or just take it easy on the beach. This guide will tell you all you need to know about the Zanzibar weather, ocean conditions, beaches, boat trips and what to pack in September. .
Zanzibar in September at a Glance
September weather in Zanzibar is typically hot and dry. Average daytime temperatures are around 29–30°C (84–86°F), while nights cool to around 21–22°C (70–72°F). The sea temperature is comfortably warm for swimming and other water sports, averaging around 79°F (26°C).
| Travel Factor | Typical September Conditions |
| Daytime temperature | Around 29–30°C |
| Nighttime temperature | Around 21–22°C |
| Sea temperature | Around 26°C |
| Rainfall | Around 35–41 mm |
| Rainy days | Around 5–8 days |
| Sunshine | Around 8 hours per day |
| Season | Long dry season |
| Overall conditions | Warm, sunny and relatively dry |
The climate averages were based on different sources and different measurement locations, but all of them indicate that September is one of the drier months of Zanzibar.
September Weather Conditions in Zanzibar
September weather in Zanzibar offers a nice balance between warm and relatively dry conditions. Summer days are warm and sunny but not as hot as during other months of the year. Average high temperatures are around 29-30°C and are suitable for most beach and sightseeing activities.
The average data displayed for Weather Zanzibar Tanzania can vary slightly from one source to another. Conditions are also different on the island. The most important point is that September is the end of Tanzania’s long dry season where the rainfall is still relatively light.
Rainfall in Zanzibar During September
September is still a rainy month but it is often much less prolific than the primary wet season. Climate data indicates that approximately 35–41 mm of rainfall is received throughout the month, on an average of five to eight days.
If a weather app displays a rain icon, don’t worry. Tropical weather may feature a shower and then a brighter period. Bring light rain gear but do not make a holiday plan based on the potential of rain.
Zanzibar City Weather vs Beach Weather
The weather in Zanzibar is typically warm and tropical, however it can get a little hotter when you’re walking around Stone Town’s winding lanes. A breeze from the Indian Ocean can bring a bit of fresh air to the coastal regions.
Walk in the morning or later in the day when it is not so hot. You can also browse Stone town private tours if you prefer to explore its history and culture with a planned experience.
September as an Ideal Time to Visit Zanzibar
Zanzibar in September is definitely the best time to visit if you’re looking for a holiday with plenty of sunshine, beaches, sightseeing and water sports. June to October is considered to be the cool dry season, and one of the most popular seasons to visit the island.
September also offers a great variety of things besides sun and sand. You can travel to the local villages, walk through the historic Stone Town, go snorkeling, sailing, fishing or it’s possible to experience many other things to do in Zanzibar.
September Compared With August
August and September are both parts of Zanzibar’s long dry season. August is slightly cooler with average highs of 28-29°C and from September onwards, sea temperature starts to rise towards 29-30°C.
The seasonal kusi wind also begins to subside during September, though the day-to-day weather at sea is sometimes different. If you are deciding between these months, you may want to read our guide to Zanzibar in August.
September Weather and Zanzibar’s Best Travel Season
Many people find the months of June to October to be the best season to visit Zanzibar due to the dry conditions and warm temperatures. September is near the end of this time, with a good amount of sunshine and not too much rain expected for the month.
It’s also a great option if you want to spend some time on the beach and enjoy some outdoor sightseeing. Popular spots and activities should still be booked in advance, though, as the weather is great for travel in the dry season, which is the best time to visit Zanzibar.
Ocean Conditions in Zanzibar in September
The Indian Ocean is one of the main attractions for Zanzibar in September. The average sea temperature is approximately 25.9°C (78.6°F) making it suitable for long periods of swimming and other water sports.
September is usually the time when the winds switch to the south and start to die down, making it easier to dive and boat. But, the sea state is never guaranteed! Always check the local marine forecast and follow your captain’s advice before heading offshore.
Swimming Conditions
September is a wonderful time to be in the sea, you can enjoy the water for a great deal longer than in several other places. Northern beaches such as Nungwi and Kendwa are particularly popular with travelers interested in swimming.
Keep in mind that tides form a crucial component of a Zanzibar beach holiday. Different areas are affected by their influence, so please refer to the local tide times before the time for you to plan a long swim or walk on the beach.
Snorkeling and Underwater Visibility
September can be a rewarding time for snorkeling, if the winds and waves are favorable in the area. With warm water and the seasonal winds starting to ease, you can explore coral areas and marine life around different parts of the island.
Each snorkeling site is unique, so take into consideration the weather and tides of the day. If you want to find the right spots, our guide to the best snorkeling in Zanzibar can help you.
Best Beaches to Visit in September
September offers many chances to enjoy Zanzibar’s famous coastline with warm days and relatively low rainfall. Whether you want a place where you can easily swim, watch the sunset, participate in water sports or simply take it easy and relax, your ideal beach will vary.
Nungwi Beach
Nungwi is located on the north coast of Zanzibar and is a good option if you want to swim a lot. The stunning coastline, clean water and vibrant beach vibe makes it easy to spend the day outdoors.
You can swim, relax on the sand, watch the boats along the coast or stay until sunset. Nungwi is also a convenient departure and arrival point for various cruises and ocean activities in the north of Zanzibar.
Kendwa Beach
Another beautiful place on the north coast is Kendwa which boasts a wide stretch of sand and a laid-back vibe. It’s ideal for a relaxed beach getaway that includes lots of swimming and exploring the landscape.
Kendwa is also an attractive place for sunset on the west coast. If time is available on the water, check out Kendwa & Nungwi private tours before you make your plans for the day.
Paje Beach
Paje is located on the south east side of Zanzibar and is different. Its long stretch of sand and noticeable tidal changes make the landscape look very different throughout the day, while seasonal winds attract many kitesurfers.
For an active beach day, Paje is an enjoyable complement to your trip. Before you go, look at the tide and wind conditions to know what to expect when you get to the beach.
Best Boat Trips in Zanzibar in September
September is the best time to visit Zanzibar if you prefer to see the island from a boat. The relatively dry conditions and warm ocean temperatures offer ample sailing, snorkeling, sunset cruising and private charter opportunities. You can explore all our tours in Zanzibar when comparing options for your trip.
Private Sunset Dhow Cruise
The dhow cruise offers a traditional form of exploring the Zanzibar coastline. Rather than run from attraction to attraction, take time to take in the sea breeze and the colors as the sun starts to set. A private Kendwa beach sunset dhow cruise is ideal for couples, families, or small groups that desire a relaxed evening together on the water.
Private Catamaran Cruise
For those looking for more room and seclusion, a catamaran offers another comfortable mode of travel around the coastline! You can enjoy the open water, relax on board, and spend quality time with your own family or group. Private catamaran cruise is ideal for those who prefer a more intimate setting than the public cruises.
Shared Mnemba Catamaran Trip
A shared catamaran trip is ideal for those wishing a more social day on the water. The waters around Mnemba are also well known for marine experiences, which means that this is a popular place to take snorkeling-based excursions. A Zanzibar all inclusive shared catamaran is a combination of sailing and snorkeling with fellow travelers who visit Zanzibar.
Deep Sea Fishing in September
Deep-sea fishing can liven up your vacation if you don’t want to head for the beach. September is a time when sport-fishing is possible around Zanzibar, but species, sport and offshore conditions are not guaranteed.
Choose an experienced local crew and follow their advice about the best departure time and fishing areas. If you prefer heading further offshore for part of your holiday then a Zanzibar deep sea fishing charter is available.
Exploring Stone Town in September
There’s more to Zanzibar than just beaches. Stone Town offers a very different glimpse of the island, with its cobbled streets, historic architecture, markets, carved doors, and waterfront, which has been shaped by centuries of cultural exchange.
September has relatively dry weather which makes walking easier, however the tropical sun can be strong. Begin early, bring enough water and stop in the shade. You can explore all stone town tours for a more organized visit to the stone town.
What to Pack for Zanzibar in September
You don’t need to do much packing when you’re heading to Zanzibar in September because it’s a hot, sunny and beach trip. Heavy clothing is not necessary, but some helpful extras will make your days more comfortable.
- Reef-safe sunscreen
- Refillable water bottle
- Quick-drying clothes
- Lightweight rain jacket
- Waterproof phone pouch
- Light layer for windy night
- Sun sunglasses and sun hat
- Lightweight, breathable clothes
- A swimwear and a beach cover up
- Sneakers or comfortable walking shoes
Remember to dress more modestly when you leave beach resorts and visit Stone Town or local communities. Lightweight clothes that cover shoulders and knees are helpful.
Tips for Visiting Zanzibar in September
Planning is not the only necessary thing to enjoy the island. The following are a few simple tips to help you make the most of the September weather in Zanzibar.
- Visit early: Choose the cooler parts of the day for sightseeing, walking the beach and longer walks around town.
- Pay attention to the tide: The tides can significantly affect swimming and beach conditions in certain shoreline locations.
- Plan ahead: Accommodation and boat trips become increasingly popular during the dry season and it’s best not to put things off until the last minute.
- Drink plenty of water: When traveling around or enjoying several hours outdoors in the tropical heat.
- Protect yourself from the sun: Apply sunscreen and take sunglasses and a hat, particularly during the hottest times of day.
- Observe the sea state: Know what the sea is doing by listening to the local forecasts and captain.
- Respect local culture: Wear appropriate clothing when exploring Stone Town, villages, and areas away from beach resorts.
Final Thoughts
Zanzibar in September is the best time to visit with warm weather, reduced rainfall, stunning beaches and pleasant Indian Ocean temperatures. The perfect time to unwind by the sea, explore Stone Town, snorkel, sail and discover more of the island.
With a bit of planning, the trip can be even better. Look at the tides and sea, book popular activities in advance and be flexible. Once you’re ready to explore Zanzibar from the water, check out our Zanzibar boat tours or contact us on WhatsApp if you need some guidance on what boat trip to book for your holiday.
Frequently Asked Questions
Is September an Ideal Month to Visit Zanzibar?
Yes. Zanzibar in September is part of the long dry season, and is generally warm with relatively little rain and a lot of sunshine. It’s a popular time of year for beaches and outdoor activities because of these conditions.
What Is Zanzibar Weather Like in September?
Zanzibar weather in September is warm, sunny, and relatively dry. Average daytime temperatures are 29 – 30 °C and around 21 – 22 °C at night, this still involves high humidity and strong tropical sunshine.
Does It Rain a Lot in Zanzibar in September?
No. Zanzibar in September is hot, sunny and not very rainy. Average daytime temperatures are somewhere in the region of 29–30°C, with average nighttime temperatures of about 21–22°C, and a fair amount of tropical sunshine as well.