Skip to content
wherewarm

Tanzania

Zanzibar weather in September

Is it warm? Yes. September in Zanzibar is hot: afternoons average 29°C and nights 23°C. Most days (80%) peak between 28°C and 30°C.

Hot · average high

29°C

25°C or more on almost every day.

  • Average low23°overnight
  • Sea27°average, 2023–2025
  • Rainy days639 mm in the month
  • SkySome cloud36% cloud · 46% clear days

How warm it really gets

Every September afternoon from 2011–2025: 450 days. Most (80%) peaked between 28° and 30°.

Number of September days by daily high, 2011–2025.

September, year by year

The average September high in each year. The warmest, 2023, averaged 29°C; the coolest, 2018, 28°C.

Average September high by year: 2011: 28.8°C, 2012: 29.1°C, 2013: 28.7°C, 2014: 28.2°C, 2015: 29.2°C, 2016: 28.5°C, 2017: 28.3°C, 2018: 28.1°C, 2019: 28.4°C, 2020: 28.4°C, 2021: 28.3°C, 2022: 28.2°C, 2023: 29.3°C, 2024: 28.8°C, 2025: 28.6°C.

Compared with home

Average September highs. Expect rain on about 6 days (39 mm in a typical month).

  • Zanzibar29°
  • London19°
  • Manchester17°
  • Dublin17°
  • Cork17°
  • Belfast16°
  • Glasgow16°

Other months

Zanzibar all year · Where else is hot in September

Warmer in September, not much further

Flying times are estimates from Dublin; Zanzibar is about 10h.

  • Hot in Sep

    31°C average high

    avg high · 19° at night

    25°C+ on almost every day

    Seville

    Spain

    Sea
    Inland
    Rain
    3 days
    Sky
    Some cloud
    From Dublin
    ≈ 2h 45m

  • Hot in Sep

    33°C average high

    avg high · 18° at night

    25°C+ on almost every day · often 35°C+

    Marrakech

    Morocco

    Sea
    Inland
    Rain
    1 day
    Sky
    Some cloud
    From Dublin
    ≈ 3h 30m

  • Hot in Sep

    32°C average high

    avg high · 20° at night

    25°C+ on almost every day

    Antalya

    Turkey

    Sea
    29°
    Rain
    2 days
    Sky
    Mostly clear
    From Dublin
    ≈ 4h 30m

Air: ERA5 reanalysis via Open-Meteo, 2011–2025. Sea: Copernicus Marine analysis via Open-Meteo, 2023–2025. Rainy day = 2 mm or more. Clear day = average cloud cover of 30% or less. These are averages of past weather, not a forecast. Methodology