September weather forecast
Mampatas, Guinea-Bissau

The first month of the autumn, September, is still a tropical month in Mampatas, Guinea-Bissau, with an average temperature ranging between min 23.2°C (73.8°F) and max 31.6°C (88.9°F).

Temperature

Mampatas's shift from August to September is accompanied by an average high-temperature of a still tropical 31.6°C (88.9°F), a slight deviation from 30.8°C (87.4°F). Throughout the month of September, Mampatas expects an average low of 23.2°C (73.8°F).

Heat index

The heat index value during September is estimated at a life-threatening hot 45°C (113°F). Beware: Heat exhaustion along with heat cramps are on the cards. Heatstroke could result from sustained physical activity.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially vital to children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

In Mampatas, Guinea-Bissau, the average relative humidity in September is 84%.

Rainfall

In Mampatas, in September, it is raining for 23.7 days, with typically 152mm (5.98") of accumulated precipitation. Throughout the year, in Mampatas, Guinea-Bissau, there are 109.1 rainfall days, and 654mm (25.75") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 12min.
On the first day of September in Mampatas, Guinea-Bissau, sunrise is at 06:51 and sunset at 19:12. On the last day of the month, sunrise is at 06:51 and sunset at 18:52 GMT.

Sunshine

The average sunshine in September is 7h.

UV index

In September, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 7 in September interprets into the following advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.