September weather forecastPeche, Guinea-Bissau
September
Weather in September
September, the first month of the autumn in Peche, is a tropical month, with an average temperature varying between 30.9°C (87.6°F) and 24.7°C (76.5°F).Temperature
September's onset sees an average high-temperature of a tropical 30.9°C (87.6°F), exhibiting a slight fluctuation from the previous month. Peche's September nights cool down to an average low-temperature of 24.7°C (76.5°F).Heat index
September's heat index is calculated to be an extremely hot 41°C (105.8°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.The metrics for the heat index are tailored for both shady environments and light winds. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. 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 highly critical for babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.
Humidity
In September, the average relative humidity in Peche is 80%.Rainfall
In Peche, in September, during 20.5 rainfall days, 133mm (5.24") of precipitation is typically accumulated. Throughout the year, there are 103.1 rainfall days, and 677mm (26.65") of precipitation is accumulated.Daylight
The average length of the day in September in Peche is 12h and 11min.On the first day of the month, sunrise is at 06:53 and sunset at 19:14. On the last day of September, sunrise is at 06:53 and sunset at 18:54 GMT.
Sunshine
The average sunshine in September is 7.3h.UV index
January through June, September through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 7 in September translates into these instructions:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Peche, Guinea-Bissau
- Average high temperature in September: 30.9°C
The warmest month (with the highest average high temperature) is March (37.1°C).
The month with the lowest average high temperature is August (29.8°C).
- Average low temperature in September: 24.7°C
The month with the highest average low temperature is June (25.7°C).
The coldest month (with the lowest average low temperature) is January (21.2°C).
Average pressure in September
Peche, Guinea-Bissau
- Average pressure in September: 1012.2mbar
The month with the highest atmospheric pressure is July (1012.9mbar).
The month with the lowest atmospheric pressure is April (1010.2mbar).
Average wind speed in September
Peche, Guinea-Bissau
- Average wind speed in September: 9.2km/h
The windiest month (with the highest average wind speed) is June (12.8km/h).
The calmest month (with the lowest average wind speed) is October (8.6km/h).
Average humidity in September
Peche, Guinea-Bissau
- Average humidity in September: 80%
The month with the highest relative humidity is August (81%).
The month with the lowest relative humidity is January (26%).
Average rainfall in September
Peche, Guinea-Bissau
- Average rainfall in September: 133mm
The wettest month (with the highest rainfall) is August (254mm).
The driest months (with the least rainfall) are January, February and December (0mm).
Average rainfall days in September
Peche, Guinea-Bissau
- Average rainfall days in September: 20.5 days
The month with the highest number of rainy days is August (27.1 days).
The month with the least rainy days is January (0.1 days).
Average daylight in September /
Average sunshine in September
Peche, 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 18min
The months with the most sunshine are March and April (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 5h and 42min).
Average sunshine days in September
Peche, Guinea-Bissau
- Average sunshine days in September: 7.4 days
The month with the most sunshine days is January (30.7 days).
The month with the least sunshine days is August (3.3 days).
Average UV index in September
Peche, Guinea-Bissau
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, September, October, November and December (UV index 7).
The months with the lowest UV index are July and August (UV index 6).
Average cloud cover in September
Peche, Guinea-Bissau
- Average cloud cover in September: 47
The month with the most cloud cover is August (Cloud cover 58).
The months with the least cloud cover are March and April (Cloud cover 7).
Average visibility in September
Peche, Guinea-Bissau
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, October, November and December (10km).
The months with the lowest visibility are July, August and September (9km).
