September weather forecast
Colebe, Guinea-Bissau

The first month of the autumn, September, is a hot month in Colebe, Guinea-Bissau, with an average temperature ranging between max 30°C (86°F) and min 22.9°C (73.2°F).

Temperature

The arrival of September brings an average high-temperature of a hot 30°C (86°F), closely following the temperature pattern of August. Throughout September, the temperature falls to an average low of 22.9°C (73.2°F).

Heat index

In September, the average heat index is appraised at an extremely hot 40°C (104°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', measures the perceived warmth when incorporating the humidity present in the air. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The average relative humidity in September in Colebe is 88%.

Rainfall

In September, in Colebe, the rain falls for 27.9 days. Throughout September, 205mm (8.07") of precipitation is accumulated. In Colebe, during the entire year, the rain falls for 165.4 days and collects up to 1099mm (43.27") of precipitation.

Daylight

In September, the average length of the day is 12h and 11min.
On the first day of September, sunrise is at 06:44 and sunset at 19:05. On the last day of the month, sunrise is at 06:44 and sunset at 18:45 GMT.

Sunshine

The average sunshine in September is 6.3h.

UV index

The months with the highest UV index in Colebe are January through May, September through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The daily high UV index of 7 during September translates into the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.