Guinea-Bissau weather live forecast

Today's maximum temperature in Guinea-Bissau is expected to be 86°F. Select a day from the live weather forecast for Guinea-Bissau (Bissau) for more weather parameters.

5-day weather forecast updated at 04:01 on Monday 15th September 2025 GMT

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The 5-day weather forecast for Guinea-Bissau (Bissau) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Top Guinea-Bissau destinations

Below are temperatures expected today at popular countries, regions and places in Guinea-Bissau. Select a destination to see the detailed weather forecast for today, tomorrow and the outlook for the next five days.

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Guinea-Bissau weather forecast by day

Below are the detailed weather forecasts for Guinea-Bissau for the next 5 days. The forecasts shown are for Bissau and may not represent the whole of Guinea-Bissau. Browse more destinations in Guinea-Bissau to view more weather forecasts.

Guinea-Bissau weather for Monday 15th September 2025

Expect isolated thunderstorms in Guinea-Bissau with a maximum temperature of 86°F, moderate levels of heat & humidity, maximum UV of 7 (High) and 3 hours of bright sunshine. There are 10-20 mm of rainfall expected with 87% chance of some rain and a light breeze of 4 mph from the south-west.

  • 86°F maximum temperature86
    °F maximum temperature
  • 77°F minimum temperature77
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 87% chance of some rain87
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 4 mph from the South-West4
    mph wind from SW

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Guinea-Bissau weather for Tuesday 16th September 2025

Expect isolated thunderstorms in Guinea-Bissau with a maximum temperature of 86°F, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 5 hours of bright sunshine. There are 10-20 mm of rainfall expected with 87% chance of some rain and a gentle breeze of 9 mph from the south.

  • 86°F maximum temperature86
    °F maximum temperature
  • 77°F minimum temperature77
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 87% chance of some rain87
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 9 mph from the South9
    mph wind from S

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Guinea-Bissau weather for Wednesday 17th September 2025

Expect isolated thunderstorms in Guinea-Bissau with a maximum temperature of 90°F, high levels of heat & humidity, maximum UV of 9 (Very High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 58% chance of some rain and a light breeze of 6 mph from the south-west.

  • 90°F maximum temperature90
    °F maximum temperature
  • 77°F minimum temperature77
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 58% chance of some rain58
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Light breeze of 6 mph from the South-West6
    mph wind from SW

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Guinea-Bissau weather for Thursday 18th September 2025

Expect isolated thunderstorms in Guinea-Bissau with a maximum temperature of 86°F, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 3 hours of bright sunshine. There are 10-20 mm of rainfall expected with 88% chance of some rain and a light breeze of 6 mph from the south-west.

  • 86°F maximum temperature86
    °F maximum temperature
  • 77°F minimum temperature77
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 10 (Very High)10
    UV index (Very High)
  • 88% chance of some rain88
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 6 mph from the South-West6
    mph wind from SW

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Guinea-Bissau weather for Friday 19th September 2025

Expect isolated thunderstorms in Guinea-Bissau with a maximum temperature of 84°F, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 63% chance of some rain and a light breeze of 7 mph from the south.

  • 84°F maximum temperature84
    °F maximum temperature
  • 77°F minimum temperature77
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 63% chance of some rain63
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 7 mph from the South7
    mph wind from S

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Metric (°C)  |  Imperial (°F)

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