September weather forecastCachôbar, Guinea-Bissau
September
Weather in September
The first month of the autumn, September, is a hot month in Cachôbar, Guinea-Bissau, with temperature in the range of an average low of 23.6°C (74.5°F) and an average high of 30.9°C (87.6°F).Temperature
In September, Cachôbar notes an average high-temperature of a hot 30.9°C (87.6°F), hardly different from the preceding month. During the month of September, the temperature falls to an average of 23.6°C (74.5°F).Heat index
The heat index for September is calculated to be a scorching 42°C (107.6°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.Be advised, the heat index considers values for conditions in shade and with a light breeze. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.
Humidity
The months with the highest humidity in Cachôbar, Guinea-Bissau, are August and September, with an average relative humidity of 85%.Rainfall
In Cachôbar, Guinea-Bissau, in September, it is raining for 22.2 days, with typically 168mm (6.61") of accumulated precipitation. Throughout the year, there are 109.7 rainfall days, and 868mm (34.17") of precipitation is accumulated.Daylight
In Cachôbar, the average length of the day in September is 12h and 11min.On the first day of the month, sunrise is at 06:50 and sunset at 19:10. On the last day of September, sunrise is at 06:49 and sunset at 18:51 GMT.
Sunshine
The average sunshine in September 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. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.Note: In September, an average UV index of 7 transforms into the following instructions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Cachôbar, 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
Cachôbar, 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
Cachôbar, 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
Cachôbar, 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
Cachôbar, 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
Cachôbar, 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
Cachôbar, 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
Cachôbar, 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
Cachôbar, 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
Cachôbar, 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
Cachôbar, 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).
