Swimming in Zanzibar in september 2025 Sea temperature by city in september
Do you want to go to the beach in Zanzibar in september 2025? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in september in Zanzibar by city and our opinion on the chances of enjoying pleasant sea conditions.
Sea temperature in Zanzibar in september 2025
Here, find the average sea temperature in Zanzibar in september in several coastal cities.
Unguja in september
79°F
min: 77°F / max: 80°F
79°F
min: 78°F / max: 81°F
Bwejuu
79°F
min: 77°F / max: 81°F
Changuu (Prison island)
79°F
min: 78°F / max: 81°F
Chumbe Island
79°F
min: 78°F / max: 80°F
Chwaka
79°F
min: 78°F / max: 80°F
Pemba in september
79°F
min: 78°F / max: 81°F
79°F
min: 77°F / max: 81°F
Kangani
79°F
min: 77°F / max: 81°F
Mkoani
79°F
min: 77°F / max: 81°F
Mafia in september
79°F
min: 78°F / max: 81°F
Bweni
79°F
min: 77°F / max: 81°F
Chole Bay
79°F
min: 78°F / max: 81°F
Utende
79°F
min: 77°F / max: 81°F
Where should you go swimming in Zanzibar in the month of september?
Swimming in Zanzibar in september is ideal (in the best case scenario)
In september in Zanzibar swimming conditions vary by city. Details below:
In september in Wete (Pemba Island), Chumbe Island, Bawe Island, Jambiani, Kangani, Kiwengwa, Kizimkazi, Mangapwani, Matemwe, Mnemba Island, Paje Beach and Tumbatu Island, swimming conditions are perfect! With water reaching a maximum of 81°F and an average of 79°F, going in the water (and staying there!) feels great.
As for Stone Town, Nungwi (Unguja Island), Chake Chake, Kilindoni (Mafia Island), Bwejuu, Bweni, Changuu (Prison island), Chole Bay, Chwaka, Fumba, Chapwani Island, Kendwa, Makunduchi Beach, Mkoani, Mkokotoni, Pingwe, Uroa and Utende, swimming is pleasant in september. The sea water is 79°F on average (min: 77°F/max: 80°F) so you can easily spend time in the water.
Where to go swimming in Zanzibar in september: the map of sea temperatures
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWater temperature and seasonal norms in september
Stone Town
| September | |||
| Average sea temperature | 79°F | ||
| Minimum sea temperature | 77°F | ||
| Maximum sea temperature | 80°F | ||
| Average outside temperature | 79°F | ||
| Maximum outside temperature | 83°F | ||
| Minimum outside temperature | 76°F | ||
| Precipitation | 3in | ||
| Number of days of precipitation | 4 jour(s) (12%) | ||
| Cloud cover | 34% | ||
| Our opinion | pleasant swimming |
More information on swimming in Stone Town in september
Nungwi (Unguja Island)
| September | |||
| Average sea temperature | 79°F | ||
| Minimum sea temperature | 78°F | ||
| Maximum sea temperature | 81°F | ||
| Average outside temperature | 79°F | ||
| Maximum outside temperature | 83°F | ||
| Minimum outside temperature | 76°F | ||
| Precipitation | 3in | ||
| Number of days of precipitation | 4 jour(s) (12%) | ||
| Cloud cover | 34% | ||
| Our opinion | pleasant swimming |
More information on swimming in Nungwi (Unguja Island) in september
Wete (Pemba Island)
| September | |||
| Average sea temperature | 79°F | ||
| Minimum sea temperature | 78°F | ||
| Maximum sea temperature | 81°F | ||
| Average outside temperature | 79°F | ||
| Maximum outside temperature | 81°F | ||
| Minimum outside temperature | 77°F | ||
| Precipitation | 3.2in | ||
| Number of days of precipitation | 4 jour(s) (14%) | ||
| Cloud cover | 37% | ||
| Our opinion | ideal swimming |
More information on swimming in Wete (Pemba Island) in september
Chake Chake
| September | |||
| Average sea temperature | 79°F | ||
| Minimum sea temperature | 77°F | ||
| Maximum sea temperature | 81°F | ||
| Average outside temperature | 79°F | ||
| Maximum outside temperature | 81°F | ||
| Minimum outside temperature | 77°F | ||
| Precipitation | 3.2in | ||
| Number of days of precipitation | 4 jour(s) (14%) | ||
| Cloud cover | 37% | ||
| Our opinion | pleasant swimming |
More information on swimming in Chake Chake in september
Kilindoni (Mafia Island)
| September | |||
| Average sea temperature | 79°F | ||
| Minimum sea temperature | 78°F | ||
| Maximum sea temperature | 81°F | ||
| Average outside temperature | 79°F | ||
| Maximum outside temperature | 86°F | ||
| Minimum outside temperature | 74°F | ||
| Precipitation | 2.1in | ||
| Number of days of precipitation | 3 jour(s) (10%) | ||
| Cloud cover | 34% | ||
| Our opinion | pleasant swimming |
More information on swimming in Kilindoni (Mafia Island) in september
List of coastal cities in Zanzibar
| Stone Town in september | pleasant swimming |
| Nungwi (Unguja Island) in september | pleasant swimming |
| Wete (Pemba Island) in september | ideal swimming |
| Chake Chake in september | pleasant swimming |
| Kilindoni (Mafia Island) in september | pleasant swimming |
| Bwejuu in september | pleasant swimming |
| Bweni in september | pleasant swimming |
| Changuu (Prison island) in september | pleasant swimming |
| Chole Bay in september | pleasant swimming |
| Chumbe Island in september | ideal swimming |
| Chwaka in september | pleasant swimming |
| Fumba in september | pleasant swimming |
| Bawe Island in september | ideal swimming |
| Chapwani Island in september | pleasant swimming |
| Jambiani in september | ideal swimming |
| Kangani in september | ideal swimming |
| Kendwa in september | pleasant swimming |
| Kiwengwa in september | ideal swimming |
| Kizimkazi in september | ideal swimming |
| Makunduchi Beach in september | pleasant swimming |
| Mangapwani in september | ideal swimming |
| Matemwe in september | ideal swimming |
| Mkoani in september | pleasant swimming |
| Mkokotoni in september | pleasant swimming |
| Mnemba Island in september | ideal swimming |
| Paje Beach in september | ideal swimming |
| Pingwe in september | pleasant swimming |
| Tumbatu Island in september | ideal swimming |
| Uroa in september | pleasant swimming |
| Utende in september | pleasant swimming |