September weather forecast
Cachôbar, Guinea-Bissau

The first month of the autumn, September, is a hot month in Cachôbar, Guinea-Bissau, with temperature in the range of an average low of 23.6°C (74.5°F) and an average high of 30.9°C (87.6°F).

Temperature

In September, Cachôbar notes an average high-temperature of a hot 30.9°C (87.6°F), hardly different from the preceding month. During the month of September, the temperature falls to an average of 23.6°C (74.5°F).

Heat index

The heat index for September is calculated to be a scorching 42°C (107.6°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The months with the highest humidity in Cachôbar, Guinea-Bissau, are August and September, with an average relative humidity of 85%.

Rainfall

In Cachôbar, Guinea-Bissau, in September, it is raining for 22.2 days, with typically 168mm (6.61") of accumulated precipitation. Throughout the year, there are 109.7 rainfall days, and 868mm (34.17") of precipitation is accumulated.

Daylight

In Cachôbar, the average length of the day in September is 12h and 11min.
On the first day of the month, sunrise is at 06:50 and sunset at 19:10. On the last day of September, sunrise is at 06:49 and sunset at 18:51 GMT.

Sunshine

The average sunshine in September is 6.4h.

UV index

January through July, September through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: In September, an average UV index of 7 transforms into the following instructions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.