The month in detail
What to expect in September
In September, Stone Town sees 28°C during the day with 7.0h of sunshine per day. Rain risk remains low (21% of days), leaving good room for outdoor activities. A good balance between weather and crowds, even if August (8.6/10) remains theoretically better.
September ranks 2 out of 12 months in Stone Town.
This month's conditions
What it's like in September
UV index
8 · very high
protection essential
Feels like
muggy at times
21°
Sea
27°C
warm, ideal
Daylight
12.0h of daylight
Air quality
good
AQI 22
Compare
Is September the right month?
The best month in Stone Town is August (8.6/10), 0.1 pt higher than September.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Stone Town
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Stone Town
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a tropical stay.
Country · Tanzania
🗣️LanguageSwahili
💶CurrencyShilling tanzanien (TSh)
🚗DrivingLeft-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘVery cheap · 1/5
🌡️ Climate
🌍Climate typeEquatorial tropical
📈Climate trend ⓘStable
🔥Hottest monthJanuary · 32°C
❄️Coolest monthJuly · 27°C
🌧️Rainiest month ⓘApril · 64%
🏝️ Tropical stay
🌞Dry season ⓘMay → Sep
🌧️Wet season ⓘDec → Mar
🌀Cyclones ⓘNone (equator)
Explore
Other destinations in September
If September doesn't convince you for this destination, compare with others.
Location
Where is Stone Town ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
TanzaniaEquatorial tropical climate with a 8.6 → 4.8 gap between best and worst month. 10 years of ERA5 data to choose by project.
6.16°S · 39.19°E
Questions
Frequently asked questions
What is the best time to visit Stone Town?
August is the best month with 28.0°C highs, 23.0°C lows, 6.9h of sunshine and 20.0% rainy days. The months of August & September offer comparable conditions.
How many hours of sunshine does Stone Town get in August?
Stone Town averages 6.9 sunshine hours per day in August. It is the sunniest month with a climate score of 8.1/10.
What is the rainiest month in Stone Town?
April is the most unfavourable month with April has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Stone Town in August?
In August, overnight lows reach 23.0°C, while afternoon highs average 28.0°C.
Is Stone Town good in winter?
In winter (December-February), Stone Town scores 5.4/10 on average — Difficult period — prefer the peak season.. The best month overall remains August with a score of 8.1/10.
When should you avoid Stone Town?
April is the most difficult month to visit Stone Town, with April has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Stone Town in September?
In September, the sea averages 27°C in Stone Town: warm, ideal. Ideal conditions for swimming and snorkeling.
Do you need sun protection in Stone Town in September?
The average UV index reaches 8 in September in Stone Town (very high), with about 12.0h of daylight. Protection essential.