September weather forecast
Bipar, Guinea-Bissau

The first month of the autumn, September, is a tropical month in Bipar, Guinea-Bissau, with temperature in the range of an average high of 30.9°C (87.6°F) and an average low of 24.7°C (76.5°F).

Temperature

In the transition from August to September, Bipar reports an average high-temperature of a tropical 30.9°C (87.6°F), indicating a close resemblance to the prior month. During September, Bipar's temperature falls to a steady low-temperature average of 24.7°C (76.5°F).

Heat index

For September, the heat index is computed to be a blistering 41°C (105.8°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. 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 extremely significant for children. 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.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in September in Bipar is 80%.

Rainfall

In Bipar, in September, it is raining for 20.5 days, with typically 133mm (5.24") of accumulated precipitation. Throughout the year, there are 103.1 rainfall days, and 677mm (26.65") of precipitation is accumulated.

Daylight

In September, the average length of the day in Bipar, Guinea-Bissau, is 12h and 11min.
On the first day of September, sunrise is at 06:54 and sunset at 19:15. On the last day of the month, sunrise is at 06:53 and sunset at 18:55 GMT.

Sunshine

In Bipar, the average sunshine in September is 7.3h.

UV index

January through June, September through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: An average UV index of 7 in September transforms into this advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.