September weather forecast
Douglas, Belize

The first month of the autumn, September, is still a hot month in Douglas, Belize, with an average temperature fluctuating between 31.5°C (88.7°F) and 24.4°C (75.9°F).

Temperature

The arrival of September records an average high-temperature of a still tropical 31.5°C (88.7°F), closely related to the 31.8°C (89.2°F) observed in August. In September, Douglas records an average nighttime temperature of 24.4°C (75.9°F).

Heat index

Throughout September, the heat index is appraised at a blistering 43°C (109.4°F). Note: Heat exhaustion and heat cramps are probable. Heatstroke can follow with prolonged activity.
Observations indicate that the heat index values are for shady locations with light wind. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', arises from combining readings of air temperature and relative moisture content. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in September is 81%.

Rainfall

In Douglas, during September, the rain falls for 23.1 days and regularly aggregates up to 96mm (3.78") of precipitation. Throughout the year, in Douglas, there are 198.4 rainfall days, and 752mm (29.61") of precipitation is accumulated.

Daylight

In Douglas, the average length of the day in September is 12h and 14min.
On the first day of September, sunrise is at 05:40 and sunset at 18:08. On the last day of the month, sunrise is at 05:44 and sunset at 17:43 CST.

Sunshine

In Douglas, the average sunshine in September is 8.5h.

UV index

March through July and September, with an average maximum UV index of 7, are months with the highest UV index in Douglas. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 7 translates into the following recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.