September weather forecastCuba, Portugal
September
Weather in September
The first month of the autumn, September, is still a hot month in Cuba, Portugal, with an average temperature ranging between min 17°C (62.6°F) and max 30.7°C (87.3°F).Temperature
The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's hot 34.7°C (94.5°F) to a still tropical 30.7°C (87.3°F). Cuba reports a significant contrast between daytime and nighttime temperatures, with an average low of 17°C (62.6°F) in September.Heat index
In September, the average heat index is estimated at a tropical 33°C (91.4°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 see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'feels like', takes into account both air temperature and humidity to illustrate what people actually feel. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. 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.
Humidity
The average relative humidity in September in Cuba is 52%.Rainfall
In Cuba, in September, during 3.3 rainfall days, 5mm (0.2") of precipitation is typically accumulated. Throughout the year, there are 65.2 rainfall days, and 110mm (4.33") of precipitation is accumulated.Daylight
The average length of the day in September in Cuba is 12h and 26min.On the first day of September in Cuba, Portugal, sunrise is at 07:01 and sunset at 20:01. On the last day of the month, sunrise is at 07:26 and sunset at 19:15 WEST.
Sunshine
In September, the average sunshine in Cuba is 9.4h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, a regular UV index of 6 translates into these guidelines:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun 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
Average temperature in September
Cuba, Portugal
- Average high temperature in September: 30.7°C
The warmest month (with the highest average high temperature) is August (34.7°C).
The month with the lowest average high temperature is January (14.4°C).
- Average low temperature in September: 17°C
The month with the highest average low temperature is August (17.8°C).
The coldest month (with the lowest average low temperature) is February (5.3°C).
Average pressure in September
Cuba, Portugal
- Average pressure in September: 1016.4mbar
The month with the highest atmospheric pressure is December (1022.7mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Cuba, Portugal
- Average wind speed in September: 9.4km/h
The windiest month (with the highest average wind speed) is July (11.9km/h).
The calmest month (with the lowest average wind speed) is September (9.4km/h).
Average humidity in September
Cuba, Portugal
- Average humidity in September: 52%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (47%).
Average rainfall in September
Cuba, Portugal
- Average rainfall in September: 5mm
The wettest month (with the highest rainfall) is April (20mm).
The driest months (with the least rainfall) are July and August (1mm).
Average rainfall days in September
Cuba, Portugal
- Average rainfall days in September: 3.3 days
The month with the highest number of rainy days is April (9.7 days).
The month with the least rainy days is August (1 days).
Average daylight in September /
Average sunshine in September
Cuba, Portugal
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 9h and 24min
The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
Cuba, Portugal
- Average sunshine days in September: 25.1 days
The month with the most sunshine days is July (28.9 days).
The month with the least sunshine days is April (18.8 days).
Average UV index in September
Cuba, Portugal
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Cuba, Portugal
- Average cloud cover in September: 17
The months with the most cloud cover are January and April (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in September
Cuba, Portugal
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, October, November and December (9km).
