September weather forecastCabaceira, Guinea-Bissau
September
Weather in September
September, the first month of the autumn in Cabaceira, is a hot month, with an average temperature varying between 30.9°C (87.6°F) and 23.6°C (74.5°F).Temperature
The start of September marks an average high-temperature of a tropical 30.9°C (87.6°F), hardly distinguishable from the conditions in August. In the month of September, Cabaceira records a consistent average low-temperature of 23.6°C (74.5°F).Heat index
September's heat index is estimated at an extremely hot 42°C (107.6°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', determines the feeling of heat when you account for the relative humidity. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.
Humidity
August and September, with an average relative humidity of 85%, are the most humid months in Cabaceira.Rainfall
In Cabaceira, in September, it is raining for 22.2 days, with typically 168mm (6.61") of accumulated precipitation. Throughout the year, in Cabaceira, there are 109.7 rainfall days, and 868mm (34.17") of precipitation is accumulated.Daylight
In Cabaceira, Guinea-Bissau, the average length of the day in September is 12h and 11min.On the first day of the month, sunrise is at 06:51 and sunset at 19:11. On the last day of September, in Cabaceira, Guinea-Bissau, sunrise is at 06:50 and sunset at 18:52 GMT.
Sunshine
In September, the average sunshine in Cabaceira is 6.4h.UV index
The months with the highest UV index in Cabaceira are January through July, September through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index, 7 during September, leads to the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Cabaceira, Guinea-Bissau
- Average high temperature in September: 30.9°C
The warmest month (with the highest average high temperature) is March (40.2°C).
The month with the lowest average high temperature is August (29.9°C).
- Average low temperature in September: 23.6°C
The month with the highest average low temperature is June (25.1°C).
The coldest month (with the lowest average low temperature) is February (18.5°C).
Average pressure in September
Cabaceira, Guinea-Bissau
- Average pressure in September: 1012.4mbar
The month with the highest atmospheric pressure is July (1013mbar).
The month with the lowest atmospheric pressure is April (1010mbar).
Average wind speed in September
Cabaceira, Guinea-Bissau
- Average wind speed in September: 6.4km/h
The windiest month (with the highest average wind speed) is May (9.4km/h).
The calmest month (with the lowest average wind speed) is October (5.7km/h).
Average humidity in September
Cabaceira, Guinea-Bissau
- Average humidity in September: 85%
The months with the highest relative humidity are August and September (85%).
The month with the lowest relative humidity is January (32%).
Average rainfall in September
Cabaceira, Guinea-Bissau
- Average rainfall in September: 168mm
The wettest month (with the highest rainfall) is August (286mm).
The driest months (with the least rainfall) are January, February and December (0mm).
Average rainfall days in September
Cabaceira, Guinea-Bissau
- Average rainfall days in September: 22.2 days
The month with the highest number of rainy days is August (25.7 days).
The months with the least rainy days are January and February (0 days).
Average daylight in September /
Average sunshine in September
Cabaceira, Guinea-Bissau
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 30min).
- Average sunshine in September: 6h and 24min
The month with the most sunshine is March (Average sunshine: 10h and 0min).
The month with the least sunshine is August (Average sunshine: 5h and 6min).
Average sunshine days in September
Cabaceira, Guinea-Bissau
- Average sunshine days in September: 6.5 days
The month with the most sunshine days is January (30.9 days).
The month with the least sunshine days is August (4 days).
Average UV index in September
Cabaceira, Guinea-Bissau
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, September, October, November and December (UV index 7).
The month with the lowest UV index is August (UV index 6).
Average cloud cover in September
Cabaceira, Guinea-Bissau
- Average cloud cover in September: 55
The month with the most cloud cover is August (Cloud cover 65).
The month with the least cloud cover is March (Cloud cover 7).
Average visibility in September
Cabaceira, Guinea-Bissau
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, November and December (10km).
The months with the lowest visibility are August and September (8km).





