September weather forecastCafia, Guinea-Bissau
September
Weather in September
September, the first month of the autumn in Cafia, is still a tropical month, with an average temperature varying between 31.7°C (89.1°F) and 23°C (73.4°F).Temperature
The shift into September reveals an average high-temperature of a still hot 31.7°C (89.1°F), closely mirroring August's climate. Cafia cools down to an average low-temperature of 23°C (73.4°F) throughout the month of September.Heat index
The heat index in September is calculated to be a blazing hot 45°C (113°F). Precaution: Heat cramps along with heat exhaustion are possible. Heatstroke is a serious risk with continued exertion.Metrics for the heat index primarily focus on shaded spots and light wind conditions. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', comes about by integrating the temperature readings with the humidity levels. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. As body temperatures escalate without effective heat release, one might face dehydration threats.
Humidity
The average relative humidity in September in Cafia is 85%.Rainfall
In Cafia, during September, the rain falls for 23.9 days and regularly aggregates up to 145mm (5.71") of precipitation. In Cafia, during the entire year, the rain falls for 107.6 days and collects up to 593mm (23.35") of precipitation.Daylight
The average length of the day in September is 12h and 11min.On the first day of the month, sunrise is at 06:48 and sunset at 19:09. On the last day of September, sunrise is at 06:48 and sunset at 18:49 GMT.
Sunshine
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 health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A maximum daily UV index of 7 during September morphs into the following directions:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Cafia, Guinea-Bissau
- Average high temperature in September: 31.7°C
The warmest month (with the highest average high temperature) is April (42.1°C).
The month with the lowest average high temperature is August (31°C).
- Average low temperature in September: 23°C
The month with the highest average low temperature is June (25.1°C).
The coldest month (with the lowest average low temperature) is January (19.3°C).
Average pressure in September
Cafia, Guinea-Bissau
- Average pressure in September: 1012.1mbar
The month with the highest atmospheric pressure is July (1012.6mbar).
The month with the lowest atmospheric pressure is April (1009.5mbar).
Average wind speed in September
Cafia, Guinea-Bissau
- Average wind speed in September: 6.2km/h
The windiest month (with the highest average wind speed) is February (9.4km/h).
The calmest month (with the lowest average wind speed) is October (6km/h).
Average humidity in September
Cafia, Guinea-Bissau
- Average humidity in September: 85%
The month with the highest relative humidity is August (86%).
The month with the lowest relative humidity is January (19%).
Average rainfall in September
Cafia, Guinea-Bissau
- Average rainfall in September: 145mm
The wettest month (with the highest rainfall) is August (206mm).
The driest months (with the least rainfall) are January, February, March and December (0mm).
Average rainfall days in September
Cafia, Guinea-Bissau
- Average rainfall days in September: 23.9 days
The month with the highest number of rainy days is August (27.7 days).
The month with the least rainy days is January (0.1 days).
Average daylight in September /
Average sunshine in September
Cafia, 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 24min).
- Average sunshine in September: 7h and 12min
The month with the most sunshine is April (Average sunshine: 10h and 0min).
The month with the least sunshine is August (Average sunshine: 5h and 54min).
Average sunshine days in September
Cafia, Guinea-Bissau
- Average sunshine days in September: 3.8 days
The month with the most sunshine days is January (30.9 days).
The month with the least sunshine days is August (2.5 days).
Average UV index in September
Cafia, Guinea-Bissau
- Average UV index in September: 7
The months with the highest UV index are March, April and May (UV index 8).
The month with the lowest UV index is August (UV index 6).
Average cloud cover in September
Cafia, Guinea-Bissau
- Average cloud cover in September: 54
The month with the most cloud cover is August (Cloud cover 63).
The month with the least cloud cover is March (Cloud cover 6).
Average visibility in September
Cafia, Guinea-Bissau
- Average visibility in September: 7km
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 (7km).
