September weather forecast
Mansaba, Guinea-Bissau

September signals a gradual transition towards drier times in Mansaba, while still retaining substantial amounts of rainfall captured at 145mm (5.71"). Differences are felt in the weather dynamics as the levels of rainfall, cloud coverage, and humidity slowly start to drop. Despite these changes, the wet season’s grasp still lingers. The contrast in weather between the beginning and end of September is evident, hinting at the upcoming dry season in the following months.

Temperature

Mansaba's September average high-temperature settles at a still hot 31.7°C (89.1°F), showing a near match with the preceding month. During September nights, Mansaba records an average temperature of 23°C (73.4°F).

Heat index

The heat index value for September is appraised at a blazing hot 45°C (113°F). Be alert: Heat exhaustion along with heat cramps are probable. Heatstroke is a threat with sustained physical activity.
The metrics for the heat index are tailored for both shady environments and light winds. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

In Mansaba, the average relative humidity in September is 85%.

Rainfall

In Mansaba, in September, during 23.9 rainfall days, 145mm (5.71") of precipitation is typically accumulated. In Mansaba, Guinea-Bissau, during the entire year, the rain falls for 107.6 days and collects up to 593mm (23.35") of precipitation.

Daylight

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

Sunshine

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

UV index

In September, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 7 during September translates into the following directions:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.