September weather forecast
Cufeu, Guinea-Bissau

September retains the monsoon backdrop with frequent rain spells across Cufeu. Witnessing lower temperature and reduced visibility, the month has a somber mood. The city's daily sunshine period begins to fall, leading to shorter days. The strong winds of the monsoon season have blown over by now, leading to calmer conditions this month. September's departure ushers in a drier and warmer October, marking the end of the rainy season.

Temperature

As Cufeu steps into September, the average high-temperature holds at a still hot 31.6°C (88.9°F), hinting at a minor fluctuation from the prior month. During September nights, Cufeu witnesses a consistent average temperature of 23.2°C (73.8°F).

Heat index

September's average heat index is computed to be a life-threatening hot 45°C (113°F). Forewarned: Heat cramps and heat exhaustion are anticipated. Ongoing physical activity increases the likelihood of heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

The average relative humidity in September in Cufeu is 84%.

Rainfall

In Cufeu, in September, it is raining for 23.7 days, with typically 152mm (5.98") of accumulated precipitation. Throughout the year, there are 109.1 rainfall days, and 654mm (25.75") of precipitation is accumulated.

Daylight

The average length of the day in September in Cufeu is 12h and 12min.
On the first day of September in Cufeu, sunrise is at 06:50 and sunset at 19:11. On the last day of the month, sunrise is at 06:50 and sunset at 18:52 GMT.

Sunshine

The average sunshine in September is 7h.

UV index

In Cufeu, the average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: During September, 7 as the daily maximum UV index converts into the following advice:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.