September weather forecastUnconche, Guinea-Bissau

Weather in September

September, the first month of the autumn in Unconche, is a tropical month, with an average temperature varying between 24.7°C (76.5°F) and 30.9°C (87.6°F).

Temperature

The beginning of September reveals an average high-temperature of a tropical 30.9°C (87.6°F), showing minimal deviation from the previous month. During September, Unconche consistently records a temperature low averaging a moderately hot 24.7°C (76.5°F).

Heat index

September's mean heat index is estimated at a blistering 41°C (105.8°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In September, the average relative humidity in Unconche is 80%.

Rainfall

In Unconche, in September, during 20.5 rainfall days, 133mm (5.24") of precipitation is typically accumulated. In Unconche, during the entire year, the rain falls for 103.1 days and collects up to 677mm (26.65") of precipitation.

Daylight

The average length of the day in September in Unconche is 12h and 11min.
On the first day of September, sunrise is at 06:52 and sunset at 19:13. On the last day of the month, sunrise is at 06:52 and sunset at 18:54 GMT.

Sunshine

In September, the average sunshine is 7.3h.

UV index

The months with the highest UV index in Unconche are January through June, September through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: During September, 7 as the daily maximum UV index converts into the following advice:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.