September weather forecast
Bissora, Guinea-Bissau

As for the weather in September in Bissora, newcomers can expect a gradual reduction in rainfall, with the total amount accumulated decreasing to 153mm (6.02"). The city experiences a somewhat cooler climate with a slight drop in temperatures. The abundance of cloud cover from August lessens, allowing more sunshine to bless the city. Although the wind speed continues the downward trend, the overall weather remains pleasant and comfortable for residents.

Temperature

The initiation of September in Bissora records an average high-temperature of a still tropical 31.4°C (88.5°F), displaying a near consistency with the previous month. Nighttime temperature dips to a mean of 23.6°C (74.5°F) during September.

Heat index

The heat index in September is appraised at a blistering 44°C (111.2°F). Keep wary: Heat cramps along with heat exhaustion are expected. Heatstroke is a possible outcome of ongoing activity.
Understanding the heat index involves considering values for shaded locales with light wind. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', offers an insight into how hot it feels when we factor in moisture content. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

The months with the highest humidity are August and September, with an average relative humidity of 84%.

Rainfall

In September, in Bissora, the rain falls for 24.5 days. Throughout September, 153mm (6.02") of precipitation is accumulated. In Bissora, during the entire year, the rain falls for 111.2 days and collects up to 710mm (27.95") of precipitation.

Daylight

The average length of the day in September in Bissora is 12h and 11min.
On the first day of the month, sunrise is at 06:51 and sunset at 19:11. On the last day of September, sunrise is at 06:50 and sunset at 18:52 GMT.

Sunshine

In Bissora, the average sunshine in September is 7.2h.

UV index

The average daily maximum UV index in September in Bissora is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum UV index of 7 in September translates into the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.