September weather forecast
Guayos, Cuba

The first month of the autumn, September, is still a tropical month in Guayos, Cuba, with temperature in the range of an average high of 30.9°C (87.6°F) and an average low of 22.2°C (72°F).

Temperature

The start of September marks an average high-temperature of a still tropical 30.9°C (87.6°F), hardly distinguishable from the conditions in August. Guayos's average low-temperature is measured at a pleasant 22.2°C (72°F) during September.

Heat index

The heat index value during September is calculated to be an extremely hot 42°C (107.6°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', combines both the air temperature and the humidity level to give a perceived human temperature. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in September is 85%.

Rainfall

In Guayos, in September, during 25.2 rainfall days, 144mm (5.67") of precipitation is typically accumulated. Throughout the year, there are 213.3 rainfall days, and 1019mm (40.12") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 16min.
On the first day of the month, sunrise is at 07:01 and sunset at 19:34. On the last day of September, in Guayos, sunrise is at 07:09 and sunset at 19:06 CDT.

Sunshine

The average sunshine in September in Guayos is 8.5h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Guayos. 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: The daily maximum UV index of 7 in September interprets into the following advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.