September weather forecast
Guinea-Bissau

englishespañol中文
Share
Flag of Guinea-Bissau
Flag of Guinea-Bissau

Weather in September

September in Guinea-Bissau marks the tail end of the wet season, though high rainfall and warm temperatures persist. The average temperatures range from a comfortable 23°C (73.4°F) during the cooler morning hours to 31°C (87.8°F) at the peak of the day. Although these temperatures mirror those of August, the high humidity levels associated with the significant rainfall can make the climate feel warmer.

In the capital city of Bissau, September experiences similar weather patterns, with temperatures fluctuating between 24°C (75.2°F) and 31°C (87.8°F). Its coastal position moderates the heat slightly, but also contributes to high humidity and substantial rainfall.

The rainfall in September remains considerable, with precipitation levels averaging 300mm (11.81"). While this is a decrease from the peak rainfall levels of August, it's still significant, signifying the gradual retreat of the monsoon season.

Compared to August, September sees similar temperatures but a slight decrease in rainfall. The heavy rains continue to nourish the lush and vibrant landscape across the country, making this period visually spectacular, albeit challenging for travel. With the wet season drawing to a close, late September can offer opportunities for exploration before the dry season sets in, providing visitors with a chance to witness the country's rich biodiversity and verdant landscapes.

  • Bissau - September »
    In Bissau, Guinea-Bissau, in September, the average water temperature is 28.3°C (82.9°F). In Bissau during September, the rain falls for 19 days and regularly aggregates up to 435mm (17.13") of precipitation.
  • Gabu - September »
    On the last day of September, in Gabu, sunrise is at 06:45 and sunset at 18:48 GMT. On the first day of September in Gabu, sunrise is at 06:46 and sunset at 19:07.
  • Canchungo - September »
    In Canchungo, Guinea-Bissau, in September, it is raining for 20.5 days, with typically 133mm (5.24") of accumulated precipitation. January through June, September through December, with an average maximum UV index of 7, are months with the highest UV index in Canchungo, Guinea-Bissau.
  • Bissora - September »
    The months with the highest humidity in Bissora are August and September, with an average relative humidity of 84%. In Bissora, during September, the rain falls for 24.5 days and regularly aggregates up to 153mm (6.02") of precipitation.
  • Bolama - September »
    In Bolama, during September, the rain falls for 20.7 days and regularly aggregates up to 132mm (5.2") of precipitation. In Bolama, in September, the average water temperature is 27.8°C (82°F).
  • Cacheu - September »
    In Cacheu, in September, the average water temperature is 28.5°C (83.3°F). The months with the highest UV index in Cacheu are January through June, September through December, with an average maximum UV index of 7.
  • Buba - September »
    In Buba in September, during 22.2 rainfall days, 168mm (6.61") of precipitation is typically accumulated. The months with the highest UV index in Buba are January through July, September through December, with an average maximum UV index of 7.
  • Catió - September »
    The months with the highest humidity in Catió are August and September, with an average relative humidity of 85%. The months with the highest UV index in Catió, Guinea-Bissau, are January through July, September through December, with an average maximum UV index of 7.
  • Quebo - September »
    The months with the highest humidity in Quebo, Guinea-Bissau, are August and September, with an average relative humidity of 85%. The months with the highest UV index in Quebo are January through July, September through December, with an average maximum UV index of 7.
  • Fulacunda - September »
    The months with the highest humidity in Fulacunda are August and September, with an average relative humidity of 85%. In Fulacunda in September, during 22.2 rainfall days, 168mm (6.61") of precipitation is typically accumulated.
  • Farim - September »
    In Farim, during September, the rain falls for 23.9 days and regularly aggregates up to 145mm (5.71") of precipitation. In Farim, during September, the rain falls for 23.9 days and regularly aggregates up to 145mm (5.71") of precipitation.
[Resources]

Guinea-Bissau

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location