September weather forecast
Pelundo, Guinea-Bissau

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

Temperature

A minimal variation is noted in Pelundo's average high-temperature at the onset of September, reaching a tropical 30.9°C (87.6°F) from August's 29.8°C (85.6°F). Pelundo observes an average nighttime low-temperature of 24.7°C (76.5°F) during the month of September.

Heat index

In September, the average heat index is calculated to be a blisteringly hot 41°C (105.8°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. 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 of high significance for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

The average relative humidity in September is 80%.

Rainfall

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

Daylight

The average length of the day in September is 12h and 11min.
On the first day of September, sunrise is at 06:53 and sunset at 19:14. 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

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 vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high UV index of 7 in September translates into the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.