Bissau
Guinea-Bissau
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Bissau, Guinea-Bissau

Trees along the golden sandy shores of Bijagos Islands in Bissau, Guinea Bissau in West Africa, with ships sailing on the calm waters under clear blue skies
Trees along the golden sandy shores of Bijagos Islands in Bissau, Guinea Bissau in West Africa, with ships sailing on the calm waters under clear blue skies
The last month of the spring, May, is another tropical month in Bissau, Guinea-Bissau, with average temperature varying between 32.8°C (91°F) and 22.2°C (72°F).

Temperature

In May, the average high-temperature is essentially the same as in April - a still tropical 32.8°C (91°F). In Bissau, Guinea-Bissau, the average low-temperature is 22.2°C (72°F).

Rainfall

In Bissau, Guinea-Bissau, during 3 rainfall days, 17.3mm (0.7") of precipitation is typically accumulated. Throughout the year, there are 86 rainfall days, and 2022.8mm (79.6") of precipitation is accumulated.

Sea temperature

In Bissau, in May, the average water temperature is 26.8°C (80.2°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In May, the average length of the day in Bissau is 12.7h.

Sunshine

In May, the average sunshine in Bissau is 8h.

UV index

February through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index of 11, and more, symbolizes an excessive health risk from unprotected exposure to the Sun's UV rays for average individuals.
The daily maximum UV index of 12 interpret into the following advice:
Practice all essential precautions. Protection against sun damage is crucial. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in May in Bissau?

The average high-temperature, in May, in Bissau, is 32.8°C (91°F), while the average low-temperature is 22.2°C (72°F).

How many days does it rain in May in Bissau?

In May, in Bissau, Guinea-Bissau, the rain falls for 3 days. Throughout May, 17.3mm (0.7") of precipitation is accumulated.

What is the sea water temperature in May in Bissau?

In Bissau, the average seawater temperature in May is 26.8°C (80.2°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Bissau have in May?

The average length of the day in May is 12.7h.

How long on average sun shines in May in Bissau?

The average sunshine in May in Bissau is 8h.

When is the highest UV index in Bissau?

February through September, with an average maximum UV index of 12, are months with the highest UV index in Bissau.

How high is the UV index in May in Bissau?

In May, the average daily maximum UV index in Bissau, Guinea-Bissau, is 12. A UV Index reading of 11, and higher, represents an ultimate hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in May - Bissau, Guinea-Bissau
  • Average high temperature in May: 32.8°C

The warmest month (with the highest average high temperature) is March (33.9°C).
The month with the lowest average high temperature is July (29.4°C).

  • Average low temperature in May: 22.2°C

Months with the highest average low temperature are June, July, August, September and October (22.8°C).
The coldest month (with the lowest average low temperature) is January (17.8°C).

Average rainfall in May - Bissau, Guinea-Bissau
  • Average rainfall in May: 17.3mm

The wettest month (with the highest rainfall) is August (682.5mm).
Driest months (with the lowest rainfall) are January and March (0.5mm).

Average rainfall days in May - Bissau, Guinea-Bissau
  • Average rainfall days in May: 3 days

The month with the highest number of rainy days is August (22 days).
Months with the lowest number of rainy days are January, February and March (0 days).

Average sea temperature in May - Bissau, Guinea-Bissau
  • Average sea temperature in May: 26.8°C

Best months for swimming (with the highest average sea temperature) are October and November (28.8°C).
The coldest month (with the lowest average sea temperature) is February (24.8°C).

Average daylight in May / Average sunshine in May - Bissau, Guinea-Bissau
  • Average daylight in May: 12.7h

The month with the longest days is June (Average daylight: 12.8h).
The month with shortest days is December (Average daylight: 11.4h).

  • Average sunshine in May: 8h

Months with most sunshine are March and April (Average sunshine: 9h).
The month with least sunshine is August (Average sunshine: 5h).

Average UV index in May - Bissau, Guinea-Bissau
  • Average UV index in May: 12

Months with the highest UV index are February, March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 9).