September weather forecast
Belize City, Belize

September brings an escalation in rainfall, with Belize City recording 287mm (11.3"), the second-highest after June. Consequently, this month witnesses fewer sunny days, but the city remains buzzing with indoor activities and attractions. The UV index drops to 12, slightly lower than in the summer months, but still requiring necessary protective measures. Despite the irregular sunshine, life runs at its usual pace, performing its daily hustle under gray skies. Tourists are often attracted to the city's cultural events and festivals during this period.

Temperature

Belize City's weather in September displays an average high-temperature of a still hot 31°C (87.8°F), showing minor disparity from August's 31.3°C (88.3°F). Belize City experiences an average low-temperature reading of 23.9°C (75°F) throughout September.

Heat index

The heat index in September is computed to be a blistering 42°C (107.6°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Note that heat index values are valued for light wind and location in the shade. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. 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 especially crucial for babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

August, September, November and December, with an average relative humidity of 84%, are the most humid months in Belize City.

Rainfall

The month with the most rainfall is September, when the rain falls for 15.9 days and typically aggregates up to 287mm (11.3") of precipitation.

Sea temperature

The months with the warmest seawater are May through November, with an average sea temperature of 29°C (84.2°F).
Note: For engaging in any water activities, temperatures from 25°C (77°F) to 29°C (84.2°F) are viewed as outstanding and exceptionally pleasing for prolonged durations.

Daylight

In September, the average length of the day in Belize City, Belize, is 12h and 14min.
On the first day of September, sunrise is at 05:38 and sunset at 18:06. On the last day of the month, sunrise is at 05:42 and sunset at 17:42 CST.

Sunshine

With an average of 5.9h of sunshine, September has the least sunshine of the year.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an excessive health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 12 in September interprets into the following advice:
Put into effect every essential safeguard, as unprotected skin and eyes might burn instantly. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. One should apply and reapply liberally a broad-spectrum sunscreen of SPF 30+ every two hours and immediately after a swim or an outdoor exercise. Warning! The Sun's UV rays intensify with reflections from sand and water.