September weather forecast
Suna, Guinea-Bissau

September, the first month of the autumn in Suna, is also a hot month, with temperature in the range of an average high of 31.7°C (89.1°F) and an average low of 23°C (73.4°F).

Temperature

In the transition from August to September, Suna reports an average high-temperature of a still tropical 31.7°C (89.1°F), indicating a close resemblance to the prior month. Suna, during the month of September, experiences an average low-temperature of 23°C (73.4°F).

Heat index

In September, the average heat index is appraised at a life-threatening hot 45°C (113°F). Be alert: Heat exhaustion along with heat cramps are probable. Heatstroke is a threat with sustained physical activity.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In September, the average relative humidity is 85%.

Rainfall

In September, the rain falls for 23.9 days. Throughout September, 145mm (5.71") of precipitation is accumulated. Throughout the year, there are 107.6 rainfall days, and 593mm (23.35") of precipitation is accumulated.

Daylight

In Suna, the average length of the day in September is 12h and 12min.
On the first day of September, sunrise is at 06:48 and sunset at 19:09. On the last day of the month, sunrise is at 06:48 and sunset at 18:49 GMT.

Sunshine

In Suna, the average sunshine in September is 7.2h.

UV index

The average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: During September, 7 as the daily maximum UV index converts into the following advice:
Guard against overexposure. Protection from sun-induced harm is essential. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.