August 27, 2026
Matching dry season diving, clove harvest months, and Pemba's quieter pace to your travel dates
A Season-by-Season Diving and Clove Island Guide
Pemba sits north of Zanzibar, separated from it by a deep channel, and its climate follows the same equatorial pattern of small temperature shifts and monsoon-driven rainfall rather than distinct hot and cold seasons. The island is greener and hillier than Zanzibar, known for its cloves as much as its coastline, and it receives far fewer visitors, which shapes both the pace of a stay and the way its dive sites are experienced. Travellers hoping to dive Pemba's steep coral walls, time a visit around the clove harvest, or add the island onto a longer Tanzania trip will each find a different window suits them best.
This guide sets out how Pemba's dry and rainy seasons work, what each brings for diving and inland exploring, and how the island's calendar lines up with time on Zanzibar or a mainland Tanzania safari for those combining the two.
Kaskazi and Kusi, the same winds that shape the whole Tanzanian coast
Pemba's Two Dry Seasons and Two Rainy Seasons
Pemba's weather is governed by the same two monsoon systems found across the Tanzanian coast. The Kaskazi, a northeast monsoon, brings warmer, more humid conditions from around November through to March. The Kusi, a southeast monsoon, brings cooler, drier air with little rain from around July to September. Between these two dry spells sit the long rains, which usually run from March into May, and a shorter, wetter spell in November and December as the Kaskazi builds. Pemba's hillier terrain and heavier vegetation mean it generally receives more rainfall across the year than Zanzibar, which is part of what keeps its clove plantations so productive.
- 🌿 The Kusi Dry Season: July to September
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Pemba's coolest, most settled months, and generally the best time to visit
The Kusi months are widely considered the best overall window for visiting Pemba, combining cooler, drier weather with calm seas and comfortable conditions for walking through the clove and spice plantations inland. Humidity is lower than at other points in the year, and the island's steep, hilly interior is more pleasant to explore on foot before the heat and humidity of the Kaskazi set in. This period overlaps with part of the clove harvest, which typically runs from around August through to December, so travellers interested in the island's plantations have a good chance of seeing pickers at work.
- 🌿 Diving Season: September to November
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When Pemba's famous walls and drop-offs are at their clearest
Pemba is known among divers for its steep coral walls and channels, particularly around Misali Island and the Pemba Channel, and underwater visibility here is generally best from September to November, once the Kusi winds have settled and before the short rains arrive. October and November in particular tend to bring larger schools of fish and more reliable sightings of pelagic species. March also has a strong reputation among dive operators as a shoulder-season window with clear water, sitting between the Kaskazi and the onset of the long rains.
- 🌿 The Kaskazi Season: December to February
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Warmer, more humid, and still a good window for diving
Once the short rains clear, the Kaskazi monsoon brings a second dry spell to Pemba, noticeably hotter and more humid than the Kusi months. Sea temperatures are warmer during this period, which suits travellers who prioritise comfortable swimming conditions over cooler air, and diving remains good, particularly earlier in the window before humidity builds further. This period also coincides with the tail end of the clove harvest and the run-up to Christmas and New Year, when the island sees a modest rise in visitor numbers, though nothing close to the crowds found on Zanzibar at the same time of year.
- 🌿 The Long Rains: March to May
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The wettest, quietest months, and why some resorts close
March through May brings Pemba's heaviest and most sustained rainfall, and a number of the island's smaller lodges close for part of this period as a result. Roads inland can become difficult and boat transfers less comfortable, so this window suits travellers with flexible plans more than those working to a fixed itinerary. Prices fall accordingly, and the island's plantations and forest reserves are at their greenest, which has its own appeal for travellers less concerned with guaranteed sunshine.
Why Pemba is known as the spice island as much as the dive island
Cloves, Chake Chake, and Inland Exploring
Pemba produces more cloves than almost anywhere else in the world, and the plantations that cover much of its interior are one of the main reasons travellers choose the island over its better known neighbour. Guided walks through the clove, nutmeg, and vanilla plantations are popular half-day excursions from most of the island’s lodges, and Chake Chake, Pemba’s main town, offers a quieter and less touristed alternative to Stone Town for travellers curious about Swahili coastal life. These excursions are more comfortable during the drier Kusi months, when humidity is lower and unpaved paths through the plantations are firmer underfoot.
How the island fits into a wider Tanzanian itinerary
Combining Pemba Island with Zanzibar and a Tanzania Safari
Pemba pairs naturally with time on Zanzibar, with short flights connecting the two islands, and many travellers choose to spend a few quieter days on Pemba either side of a longer Zanzibar stay. Pemba and Mafia Island are Tanzania's two other main islands beyond Zanzibar, though they sit on opposite sides of it and a good distance apart, so they are rarely visited on the same trip. Both, however, make a natural pairing with Zanzibar or with a mainland safari.
For those adding a mainland Tanzania safari, Pemba's Kusi dry season overlaps well with the main safari season further inland, making July to September a sensible pairing for travellers who want strong game viewing alongside settled island weather, while December to February suits those who prefer to combine the island with the calving season in the southern Serengeti.
Quick answers to what most travellers want to know
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December to March, and July to September, is generally considered the best overall window for calm seas, warm water, and great visibility when diving.
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Visibility is generally best from July to October, with December to March also rated highly by dive operators as a clear-water shoulder season.
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The long rains from March to May bring the heaviest rainfall, and some smaller lodges close during this period. The shorter rains in November and December are lighter but can still disrupt plans.
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Yes. Short flights connect the two islands, and Pemba’s quieter pace and clove plantations make it a good contrast to a longer stay on Zanzibar. But for those who prefer being off the beaten track, skip Zanzibar Island entirely and indulge in Pemba.
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The clove harvest generally runs from around August to December, so the Kusi and early Kaskazi months offer the best chance of seeing pickers at work in the plantations.
Ready to Plan Your Pemba Island Escape?
Let's build the season, and the islands, that suit you
Choosing the best time to visit Pemba Island comes down to what matters most for your trip, whether that is clear water for diving, comfortable conditions for walking through the clove plantations, or a quiet counterpoint to a longer Zanzibar stay. Our Safari Specialists can talk through the timing in detail and help build an itinerary around it. Let's start planning your Pemba Island escape.
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