September weather forecastSan Cristobal, Cuba
September
Weather in September
The first month of the autumn, September, is also a hot month in San Cristobal, Cuba, with temperature in the range of an average low of 25.6°C (78.1°F) and an average high of 30.8°C (87.4°F).Temperature
With September's arrival, San Cristobal's weather records an average high-temperature of a still tropical 30.8°C (87.4°F), marking little difference from August's 31.6°C (88.9°F). An average low-temperature of 25.6°C (78.1°F) is observed during September nights.Heat index
The heat index in September is calculated to be a blistering 40°C (104°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.Factoring in the heat index, values are geared towards shaded areas with light breezes. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', gauges the sensation of temperature factoring in the air's moisture content. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.
Humidity
In September, the average relative humidity is 78%.Rainfall
In San Cristobal, in September, during 20.2 rainfall days, 85mm (3.35") of precipitation is typically accumulated. In San Cristobal, during the entire year, the rain falls for 169.4 days and collects up to 650mm (25.59") of precipitation.Daylight
In September, the average length of the day is 12h and 16min.On the first day of September in San Cristobal, sunrise is at 07:14 and sunset at 19:48. On the last day of the month, sunrise is at 07:23 and sunset at 19:20 CDT.
Sunshine
In San Cristobal, the average sunshine in September is 9.3h.UV index
March through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum daily UV index of 7 during September morphs into the following directions:
Shield from overexposure. Defense against sun-related harm is required. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
San Cristobal, Cuba
- Average high temperature in September: 30.8°C
The warmest month (with the highest average high temperature) is July (31.8°C).
The month with the lowest average high temperature is January (25.3°C).
- Average low temperature in September: 25.6°C
The month with the highest average low temperature is August (25.9°C).
The coldest month (with the lowest average low temperature) is January (19.7°C).
Average pressure in September
San Cristobal, Cuba
- Average pressure in September: 1013.2mbar
The month with the highest atmospheric pressure is January (1018.3mbar).
The month with the lowest atmospheric pressure is October (1013.1mbar).
Average wind speed in September
San Cristobal, Cuba
- Average wind speed in September: 10.5km/h
The windiest months (with the highest average wind speed) are January and November (14.5km/h).
The calmest month (with the lowest average wind speed) is July (9.6km/h).
Average humidity in September
San Cristobal, Cuba
- Average humidity in September: 78%
The month with the highest relative humidity is October (79%).
The months with the lowest relative humidity are March and April (71%).
Average rainfall in September
San Cristobal, Cuba
- Average rainfall in September: 85mm
The wettest month (with the highest rainfall) is June (93mm).
The driest month (with the least rainfall) is March (12mm).
Average rainfall days in September
San Cristobal, Cuba
- Average rainfall days in September: 20.2 days
The month with the highest number of rainy days is August (20.7 days).
The month with the least rainy days is February (6.8 days).
Average daylight in September /
Average sunshine in September
San Cristobal, Cuba
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).
- Average sunshine in September: 9h and 18min
The months with the most sunshine are May and July (Average sunshine: 10h and 54min).
The months with the least sunshine are November and December (Average sunshine: 6h and 48min).
Average sunshine days in September
San Cristobal, Cuba
- Average sunshine days in September: 7.3 days
The month with the most sunshine days is December (21.7 days).
The month with the least sunshine days is June (7.2 days).
Average UV index in September
San Cristobal, Cuba
- Average UV index in September: 7
The months with the highest UV index are March, April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 6).
Average cloud cover in September
San Cristobal, Cuba
- Average cloud cover in September: 25
The months with the most cloud cover are January, June and October (Cloud cover 30).
The month with the least cloud cover is April (Cloud cover 20).
Average visibility in September
San Cristobal, Cuba
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
