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Draft data. Times, fares and step counts are desk estimates awaiting field checks. Unknown times stay unknown. How we verify

When to go · Bissau

Bissau in September

Avoid month. Very wet.

Key facts

Verdict
Avoid
Temperature
30° / 23°
average high / low
Rain days
17
Crowds
Low
Guinea-Bissau overall
Prices
Low
Guinea-Bissau overall

Verdict

AvoidVoykit month rating for Bissau

Very wet.

Weather in September

Long-term averages
  • BissauHighs around 30 °C, lows around 23 °C, 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.

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 →