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
Barro's average high-temperature marks a still hot 31.6°C (88.9°F) with the advent of September, closely mirroring that of the preceding month. Barro observes an average nighttime temperature of 23.2°C (73.8°F) during September.Heat index
Throughout September, the heat index is computed to be a life-threatening hot 45°C (113°F). Alert: Heat cramps and heat exhaustion are likely to occur. Prolonged exertion can lead to heatstroke.Note that heat index values are valued for light wind and location in the shade. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. As body temperatures escalate without effective heat release, one might face dehydration threats.
Humidity
The average relative humidity in September in Barro is 84%.Rainfall
In Barro, in September, during 23.7 rainfall days, 152mm (5.98") of precipitation is typically accumulated. In Barro, during the entire year, the rain falls for 109.1 days and collects up to 654mm (25.75") of precipitation.Daylight
In Barro, the average length of the day in September is 12h and 12min.On the first day of the month, sunrise is at 06:51 and sunset at 19:12. On the last day of September, sunrise is at 06:51 and sunset at 18:53 GMT.
Sunshine
The average sunshine in September is 7h.UV index
The average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 7 in September interprets into the following recommendations:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How many days does it rain in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Barro have in September?
What is the UV index intensity in September?
Average temperature in September
Barro, Guinea-Bissau
- Average high temperature in September: 31.6°C
The warmest month (with the highest average high temperature) is April (41.3°C).
The month with the lowest average high temperature is August (30.8°C).
- Average low temperature in September: 23.2°C
The month with the highest average low temperature is June (25.3°C).
The coldest month (with the lowest average low temperature) is January (19.8°C).
Average pressure in September
Barro, 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 (1009.7mbar).
Average wind speed in September
Barro, Guinea-Bissau
- Average wind speed in September: 6.5km/h
The windiest month (with the highest average wind speed) is February (9.8km/h).
The calmest month (with the lowest average wind speed) is October (6.2km/h).
Average humidity in September
Barro, Guinea-Bissau
- Average humidity in September: 84%
The month with the highest relative humidity is August (85%).
The month with the lowest relative humidity is January (20%).
Average rainfall in September
Barro, Guinea-Bissau
- Average rainfall in September: 152mm
The wettest month (with the highest rainfall) is August (224mm).
The driest months (with the least rainfall) are January, February, March and December (0mm).
Average rainfall days in September
Barro, Guinea-Bissau
- Average rainfall days in September: 23.7 days
The month with the highest number of rainy days is August (27.3 days).
The month with the least rainy days is January (0.1 days).
Average daylight in September /
Average sunshine in September
Barro, 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 0min
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 42min).
Average sunshine days in September
Barro, Guinea-Bissau
- Average sunshine days in September: 4.4 days
The month with the most sunshine days is January (30.8 days).
The month with the least sunshine days is August (2.5 days).
Average UV index in September
Barro, 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
Barro, Guinea-Bissau
- Average cloud cover in September: 51
The month with the most cloud cover is August (Cloud cover 62).
The months with the least cloud cover are March and April (Cloud cover 6).
Average visibility in September
Barro, 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).
