September weather forecast
Chicamiel, Guinea-Bissau

The first month of the autumn, September, is a tropical month in Chicamiel, Guinea-Bissau, with an average temperature ranging between max 30.9°C (87.6°F) and min 23.6°C (74.5°F).

Temperature

With the onset of September, the average high-temperature stands at a hot 30.9°C (87.6°F), closely aligned with August's 29.9°C (85.8°F). In Chicamiel, September is marked by an average low-temperature of 23.6°C (74.5°F).

Heat index

For most parts of September, the heat index is calculated to be a blisteringly hot 42°C (107.6°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

The months with the highest humidity in Chicamiel are August and September, with an average relative humidity of 85%.

Rainfall

In Chicamiel, in September, during 22.2 rainfall days, 168mm (6.61") of precipitation is typically accumulated. Throughout the year, there are 109.7 rainfall days, and 868mm (34.17") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 11min.
On the first day of the month, sunrise is at 06:49 and sunset at 19:09. On the last day of September, in Chicamiel, sunrise is at 06:48 and sunset at 18:50 GMT.

Sunshine

In September, the average sunshine in Chicamiel, Guinea-Bissau, is 6.4h.

UV index

January through July, September through December, with an average maximum UV index of 7, are months with the highest UV index in Chicamiel, Guinea-Bissau. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's 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. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.