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When to go · Bissau

Bissau in September

Avoid month. Very wet.

Key facts

Verdict
Avoid
Temperature
30°C (86°F) / 23°C (73°F)
average high / low
Rain days
17
Crowds
Low
Guinea-Bissau overall
Prices
Low
Guinea-Bissau overall

Verdict

AvoidVoykit month rating for Bissau

Very wet.

All twelve months in one grid — weather, crowds and prices, with gaps left as unknown.

Is another month better than September?

September is rated avoid. These months rate higher:

Weather in September

Long-term averages
  • BissauHighs around 30 °C (86 °F), lows around 23 °C (73 °F), rain on about 17 days
  • Coast and Bissau, Guinea-Bissau · Bissau, Cacheu, Varelastorm or typhoon risk

    Dry and pleasant Dec–Mar with Harmattan haze; very wet Jul–Sep (Bissau gets about 2,000 mm a year).

Jun–Oct season

Heavy afternoon rain most days; low streets flood and road trips slow down.

Festivals and holidays

Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.

  • Independence Day

    24 September · Citywide

    National holiday; offices and many shops close.

Crowds and prices

Crowds · Guinea-Bissau overall
Low
Prices · Guinea-Bissau overall
Low

Guinea-Bissau overall: Very wet; roads flood.

Compare two months

Weather, crowds and prices for any two months in Bissau, side by side.

  • Verdict

    Sep: Avoid

    Jan: Great (better)

  • Daytime high

    Sep: 30 °C (86 °F)

    Jan: 32 °C (90 °F)

  • Night low

    Sep: 23 °C (73 °F)

    Jan: 18 °C (64 °F)

  • Rain days

    Sep: 17

    Jan: 0 (better)

  • Crowds

    Sep: Low

    Jan: Medium

  • Prices

    Sep: Low

    Jan: Medium

  • Festivals listed

    Sep: 1

    Jan: 1

September: Very wet.

January: Dry season, hot; Harmattan haze some days.

Bissau: figures are long-term averages from this guide, not a forecast.

What to pack

  • Light, breathable clothes, a sun hat and sunscreen
  • A rain jacket or umbrella and shoes that dry fast
  • A spare day in the plan: storms can cancel flights and ferries

Build the full packing list for your trip →

Across Guinea-Bissau in September →