Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
September notes an average high-temperature of a still tropical 31.7°C (89.1°F), subtly differing from August's 31°C (87.8°F). During the month of September, Mambonco experiences a steady low-temperature average of 23°C (73.4°F).Heat index
The heat index value for September is calculated to be a burning hot 45°C (113°F). Take heed: Heat exhaustion and heat cramps are anticipated. Heatstroke is a potential outcome of continuous activity.Note that heat index values are valued for light wind and location in the shade. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', ties air temperature with relative humidity to produce the perceived temperature sensation. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.
Humidity
The average relative humidity in September is 85%.Rainfall
In Mambonco, in September, during 23.9 rainfall days, 145mm (5.71") of precipitation is typically accumulated. In Mambonco, during the entire year, the rain falls for 107.6 days and collects up to 593mm (23.35") of precipitation.Daylight
In September, the average length of the day is 12h and 11min.On the first day of September, sunrise is at 06:50 and sunset at 19:11. On the last day of the month, sunrise is at 06:49 and sunset at 18:51 GMT.
Sunshine
The average sunshine in September in Mambonco is 7.2h.UV index
The average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 7 in September translates into these instructions:
Ward off overexposure. Defence against solar harm is crucial. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Mambonco during September?
What is the average humidity in September?
How many days does it rain in September?
How many hours of daylight does Mambonco have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Mambonco have in September?
How high is the UV index in September?
Average temperature in September
Mambonco, 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
Mambonco, 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
Mambonco, 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
Mambonco, 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
Mambonco, 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
Mambonco, 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
Mambonco, Guinea-Bissau
- Average daylight in September: 12h and 1min
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 1min
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
Mambonco, 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
Mambonco, 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
Mambonco, 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
Mambonco, 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).
