September weather forecast
Uerechole, Guinea-Bissau

The first month of the autumn, September, is also a hot month in Uerechole, Guinea-Bissau, with temperature in the range of an average high of 31.6°C (88.9°F) and an average low of 23.2°C (73.8°F).

Temperature

September ushers in an average high-temperature of a still tropical 31.6°C (88.9°F), aligning closely with the preceding month. In September, the nighttime temperature lowers to an average 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). Take note: Heat exhaustion and heat cramps are expected. Heatstroke can occur with prolonged effort.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

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

Rainfall

In Uerechole, during September, the rain falls for 23.7 days and regularly aggregates up to 152mm (5.98") of precipitation. Throughout the year, there are 109.1 rainfall days, and 654mm (25.75") of precipitation is accumulated.

Daylight

In Uerechole, Guinea-Bissau, the average length of the day in September is 12h and 12min.
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 18:53 GMT.

Sunshine

In September, the average sunshine 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 risk from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, a daily maximum UV index of 7 leads to the following instructions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.