September weather forecastFátima, Guinea-Bissau
September
Weather in September
The first month of the autumn, September, is a hot month in Fátima, Guinea-Bissau, with an average temperature ranging between max 30.9°C (87.6°F) and min 23.6°C (74.5°F).Temperature
With September's arrival, Fátima's weather records an average high-temperature of a hot 30.9°C (87.6°F), marking little difference from August's 29.9°C (85.8°F). Fátima reports a consistent average low-temperature of 23.6°C (74.5°F) throughout September nights.Heat index
September's average heat index is evaluated at a scorching 42°C (107.6°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.Heat index's context suggests values are appropriate for shady areas and slight breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.
Humidity
The months with the highest humidity are August and September, with an average relative humidity of 85%.Rainfall
In Fátima, in September, during 22.2 rainfall days, 168mm (6.61") of precipitation is typically accumulated. In Fátima, Guinea-Bissau, during the entire year, the rain falls for 109.7 days and collects up to 868mm (34.17") of precipitation.Daylight
In September, the average length of the day in Fátima is 12h and 11min.On the first day of September in Fátima, sunrise is at 06:51 and sunset at 19:11. On the last day of the month, sunrise is at 06:50 and sunset at 18:52 GMT.
Sunshine
In September, the average sunshine in Fátima is 6.4h.UV index
The months with the highest UV index in Fátima, Guinea-Bissau, 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 threat to health from exposure to the Sun's UV radiation for average individuals.Note: In September, the UV index of 7 transforms into the following advice:
Resist overexposure. Safeguarding from solar damage is indispensable. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Fátima, 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
Fátima, 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
Fátima, 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
Fátima, 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
Fátima, 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
Fátima, 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
Fátima, 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
Fátima, 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
Fátima, 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
Fátima, 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
Fátima, 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).
