September weather forecast
Bunquilim, Guinea-Bissau

September, the first month of the autumn in Bunquilim, is still a tropical month, with an average temperature varying between 23.2°C (73.8°F) and 31.6°C (88.9°F).

Temperature

The average high-temperature during September registers at a still tropical 31.6°C (88.9°F), closely corresponding to the preceding month. Throughout the month of September, Bunquilim sees a steady low-temperature average of 23.2°C (73.8°F).

Heat index

In September, the heat index is estimated 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.
Heat index values are typically calculated for conditions of shade and a light breeze. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', gauges the sensation of temperature factoring in the air's moisture content. 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. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical 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. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In September, the average relative humidity is 84%.

Rainfall

In Bunquilim, in September, it is raining for 23.7 days, with typically 152mm (5.98") of accumulated precipitation. In Bunquilim, during the entire year, the rain falls for 109.1 days and collects up to 654mm (25.75") of precipitation.

Daylight

In Bunquilim, the average length of the day in September is 12h and 12min.
On the first day of September, 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 value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the maximum UV index of 7 translates into these guidelines:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.