September weather forecastCuba, Colombia

September

Weather in September

September, the first month of the autumn in Cuba, is also a fiery hot month, with an average temperature fluctuating between 23.9°C (75°F) and 35.4°C (95.7°F).

Temperature

Cuba's average high-temperature in September sits at a still torrid 35.4°C (95.7°F), showing little difference from the previous month. Throughout September nights, Cuba experiences a consistent temperature average of 23.9°C (75°F).

Heat index

The heat index for September is computed to be a life-threatening hot 54°C (129.2°F). Heed: Expect heat cramps and heat exhaustion. Continued action may cause heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

The average relative humidity in September is 74%.

Rainfall

In Cuba, in September, during 14.7 rainfall days, 47mm (1.85") of precipitation is typically accumulated. Throughout the year, there are 134.6 rainfall days, and 461mm (18.15") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 11min.
On the first day of the month, sunrise is at 05:49 and sunset at 18:08. On the last day of September, sunrise is at 05:48 and sunset at 17:50 -05.

Sunshine

In Cuba, the average sunshine in September is 9.9h.

UV index

The months with the lowest UV index are January, April through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 7 during September translates into the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.

Frequently asked questions

The average high-temperature, in September, in Cuba, is 35.4°C (95.7°F), while the average low-temperature is 23.9°C (75°F). In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is computed to be 54°C (129.2°F).

In Cuba, the average relative humidity in September is 74%.

In Cuba, in September, it is raining for 14.7 days, with typically 47mm (1.85") of accumulated precipitation.

The average day length in September is 12h and 11min.

In September, on the first day of the month, sunrise is at 05:49 and sunset at 18:08. On the last day of the month, sunrise is at 05:48 and sunset at 17:50 -05.

In September, the average sunshine duration is 9.9h.

January, April through December, with an average maximum UV index of 7, are months with the lowest UV index.

The average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Cuba, Colombia

  • Average high temperature in September: 35.4°C

The warmest month (with the highest average high temperature) is March (38.2°C).
The month with the lowest average high temperature is November (33.3°C).

  • Average low temperature in September: 23.9°C

The month with the highest average low temperature is April (25.6°C).
The coldest months (with the lowest average low temperature) are January and December (22.7°C).

Average pressure in September
Cuba, Colombia

  • Average pressure in September: 1009.5mbar

The month with the highest atmospheric pressure is January (1009.7mbar).
The month with the lowest atmospheric pressure is November (1009mbar).

Average wind speed in September
Cuba, Colombia

  • Average wind speed in September: 6.8km/h

The windiest month (with the highest average wind speed) is March (7.7km/h).
The calmest month (with the lowest average wind speed) is December (6km/h).

Average humidity in September
Cuba, Colombia

  • Average humidity in September: 74%

The months with the highest relative humidity are October and November (79%).
The month with the lowest relative humidity is February (56%).

Average rainfall in September
Cuba, Colombia

  • Average rainfall in September: 47mm

The wettest month (with the highest rainfall) is October (90mm).
The driest month (with the least rainfall) is February (1mm).

Average rainfall days in September
Cuba, Colombia

  • Average rainfall days in September: 14.7 days

The month with the highest number of rainy days is October (19 days).
The month with the least rainy days is February (1.9 days).

Average daylight in September /
Average sunshine in September
Cuba, Colombia

  • 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: 9h and 54min

The months with the most sunshine are April and July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 7h and 30min).

Average sunshine days in September
Cuba, Colombia

  • Average sunshine days in September: 14.2 days

The month with the most sunshine days is January (27.9 days).
The month with the least sunshine days is October (10.9 days).

Average UV index in September
Cuba, Colombia

  • Average UV index in September: 7

The months with the highest UV index are February and March (UV index 8).
The months with the lowest UV index are January, April, May, June, July, August, September, October, November and December (UV index 7).

Average cloud cover in September
Cuba, Colombia

  • Average cloud cover in September: 32

The month with the most cloud cover is October (Cloud cover 39).
The month with the least cloud cover is January (Cloud cover 14).

Average visibility in September
Cuba, Colombia

  • Average visibility in September: 9km

The months with the highest visibility are January, February, March, April, June and December (10km).
The months with the lowest visibility are May, July, August, September, October and November (9km).