Climate guide for Zanzibar, Tanzania

Best Time to Visit
Zanzibar

How to read the score (0–10)
05810
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About Zanzibar

June-September brings clearer skies for Stone Town alleys, spice tours, and east-coast beaches. Snorkel or dive mornings; use breezier afternoons for dhow sails and sunset seafood.

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Travel Tips

Timing & weather
Check Zanzibar's monthly climate scores before locking flights - tropical patterns shift comfort for beach trips across the year.
Getting around
In Zanzibar, pair a walkable core day with one transit or transfer buffer - crowds and traffic vary by season in Tanzania.
Tickets & access
Reserve popular museums and day trips from Zanzibar ahead in peak months; shoulder seasons are more flexible.
Pack for the profile
Pack sun protection, water shoes only where local conditions call for them, and a light layer for breezy evenings in Zanzibar. Check beach access, tides, and weather before planning water activities.

Things to do in Zanzibar

Zanzibar, Tanzania. Live activities and tours from GetYourGuide, matched to this destination.

When to visit Zanzibar: the short answer

The best time to visit Zanzibar is February, followed by August, September. Those months combine the most usable temperatures with the fewest lost days to rain: February averages 29°C with 41 mm of rain and about 27 sunny days. The months to avoid unless you have a specific reason are April, November. If budget matters more than perfect weather, May is the strongest of the low-rate months at 7.4/10.

Across the year Zanzibar swings from 25°C in July to 29°C in February, a 4-degree spread, while rainfall ranges from 40 mm in September to 357 mm in April. That is the whole planning problem in one sentence: Zanzibar is not equally good year-round, and the difference between the best and worst month here is 3.1 points on a 10-point scale.

Warmest month: February (29°C). Coolest: July (25°C). Driest: September (40 mm). Wettest: April (357 mm).

Zanzibar month by month

January in Zanzibar — the year's strongest window

Best window · 8.6/10

January averages 28°C (83°F) with humidity around 76%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Rainfall runs 77 mm, so plan one flexible day in three; you still get about 30 sunny days and 12.4 hours of daylight.

On our climate-comfort scale this is the top-ranked month of the year for Zanzibar at 8.6/10 — the reference point every other month on this page is measured against.

Expect peak pricing, and crowds are moderate.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a packable rain layer.

February in Zanzibar — the year's strongest window

Best window · 9.6/10

February averages 29°C (84°F) with humidity around 73%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Expect 41 mm of rain — occasional showers rather than washed-out days — alongside about 27 sunny days and 12.3 daylight hours.

On our climate-comfort scale this is the top-ranked month of the year for Zanzibar at 9.6/10 — the reference point every other month on this page is measured against.

Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.

March in Zanzibar — reliably good (8th best month)

Good · 8.3/10

March averages 28°C (83°F) with humidity around 75%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Rainfall runs 93 mm, so plan one flexible day in three; you still get about 30 sunny days and 12.1 hours of daylight.

It scores 8.3/10 here, 8th of 12 months, against 9.6/10 in the destination's best month.

Expect mid-season pricing, and crowds are moderate.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a packable rain layer.

April in Zanzibar — workable with trade-offs

Trade-offs · 6.5/10

April averages 26°C (79°F) with humidity around 86%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

357 mm of rain puts this in monsoon territory — about 22 sunny days across the whole month, and multi-day washouts are normal.

It scores 6.5/10 here, 12th of 12 months, against 9.6/10 in the destination's best month.

Expect low-season pricing, and crowds are light for this destination.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

If your dates are flexible, February is materially better in Zanzibar — 3.1 points higher on the same scale.

May in Zanzibar — reliably good (10th best month)

Good · 7.4/10

May averages 26°C (79°F) with humidity around 81%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

At 139 mm this is a genuinely wet month: about 29 sunny days in total, and outdoor plans need an indoor fallback.

It scores 7.4/10 here, 10th of 12 months, against 9.6/10 in the destination's best month.

Expect low-season pricing, and crowds are light for this destination.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

If your dates are flexible, February is materially better in Zanzibar — 2.2 points higher on the same scale.

June in Zanzibar — the year's strongest window

Best window · 8.5/10

June averages 25°C (77°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

Rainfall runs 79 mm, so plan one flexible day in three; you still get about 29 sunny days and 11.8 hours of daylight.

On our climate-comfort scale this is the top-ranked month of the year for Zanzibar at 8.5/10 — the reference point every other month on this page is measured against.

Expect mid-season pricing, and crowds are moderate.

Pack light clothing, swimwear and real sun protection, a packable rain layer.

July in Zanzibar — the year's strongest window

Best window · 9.3/10

July averages 25°C (76°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

Rainfall runs 47 mm, so plan one flexible day in three; you still get about 30 sunny days and 11.8 hours of daylight.

On our climate-comfort scale this is the top-ranked month of the year for Zanzibar at 9.3/10 — the reference point every other month on this page is measured against.

Expect peak pricing, and this is one of the busiest months here.

Pack light clothing, swimwear and real sun protection, a packable rain layer.

August in Zanzibar — the year's strongest window

Best window · 9.5/10

August averages 25°C (76°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

Expect 41 mm of rain — occasional showers rather than washed-out days — alongside about 31 sunny days and 11.9 daylight hours.

On our climate-comfort scale this is the top-ranked month of the year for Zanzibar at 9.5/10 — the reference point every other month on this page is measured against.

Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack light clothing, swimwear and real sun protection.

September in Zanzibar — the year's strongest window

Best window · 9.5/10

September averages 25°C (78°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.

Expect 40 mm of rain — occasional showers rather than washed-out days — alongside about 30 sunny days and 12.1 daylight hours.

On our climate-comfort scale this is the top-ranked month of the year for Zanzibar at 9.5/10 — the reference point every other month on this page is measured against.

Expect mid-season pricing, and crowds are moderate.

Pack light clothing, swimwear and real sun protection.

October in Zanzibar — the year's strongest window

Best window · 8.7/10

October averages 26°C (79°F) with humidity around 75%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Rainfall runs 75 mm, so plan one flexible day in three; you still get about 30 sunny days and 12.2 hours of daylight.

On our climate-comfort scale this is the top-ranked month of the year for Zanzibar at 8.7/10 — the reference point every other month on this page is measured against.

Expect mid-season pricing, and crowds are moderate.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a packable rain layer.

November in Zanzibar — reliably good (11th best month)

Good · 7.4/10

November averages 27°C (81°F) with humidity around 78%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

At 143 mm this is a genuinely wet month: about 28 sunny days in total, and outdoor plans need an indoor fallback.

It scores 7.4/10 here, 11th of 12 months, against 9.6/10 in the destination's best month.

Expect mid-season pricing, and crowds are light for this destination.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

If your dates are flexible, February is materially better in Zanzibar — 2.2 points higher on the same scale.

December in Zanzibar — reliably good (9th best month)

Good · 7.8/10

December averages 28°C (82°F) with humidity around 79%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

At 118 mm this is a genuinely wet month: about 31 sunny days in total, and outdoor plans need an indoor fallback.

It scores 7.8/10 here, 9th of 12 months, against 9.6/10 in the destination's best month.

Expect mid-season pricing, and crowds are moderate.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

If your dates are flexible, February is materially better in Zanzibar — 1.8 points higher on the same scale.

Frequently asked

When is the best time to visit Zanzibar, Tanzania?
In Ideal Weather mode, the best months to visit Zanzibar are February, August, September, July, October, January. February is the single peak month with an Ideal Weather score of 9.6/10 based on temperature, rainfall, humidity, daylight and historical sunny days.
What is the weather like in Zanzibar year-round?
Zanzibar has a climate profile suited to beach and coastal travel. Average monthly temperatures range from 25°C in July to 29°C in February, with Ideal Weather scores between 6.5 and 9.6 out of 10.
Which months should I avoid in Zanzibar?
The lowest Ideal Weather-scoring months in Zanzibar are April (6.5/10), May (7.4/10), November (7.4/10). These months typically combine less comfortable temperatures, higher rainfall or fewer sunny days.
When is the rainy season in Zanzibar?
April is the wettest month in Zanzibar, averaging about 357 mm of rainfall. September is the driest, at roughly 40 mm.
Which is the sunniest month in Zanzibar?
August sees the most sun in Zanzibar, with about 31 sunny days on average - ideal for outdoor plans.
Is Zanzibar a good destination for beach and coastal travel?
Zanzibar is well suited to beach and coastal travel. Its highest Ideal Weather window (February, August, September, July, October, January) aligns with the conditions travelers usually look for in this style of trip.
How is the bestime.to score for Zanzibar calculated?
Each month receives an Ideal Weather score from 0-10 using ERA5 climate normals for Zanzibar: temperature comfort, precipitation, humidity, daylight hours, and historical sunny days - weighted for beach and coastal travel.

Explore by month

Curated in Zanzibar

Tickets & experiences