September weather forecastDíli, East Timor

Weather in September

Given its proximity to the equatorial line, Díli retains its warm climate in September, but the city observes a rise in both rainfall and humidity. The amount of recorded rainfall is 9mm (0.35"), up from August's low levels. Compared with the slightly cooler October, September sees stable sea and air temperature. Despite the small amount of increased rainfall, the city continues to enjoy many hours of daylight and sunshine. Therefore, a visit to Díli in September can still include plenty of opportunities to experience the city's tropical charm.

Temperature

As September takes hold, the average high-temperature is a still tropical 30.3°C (86.5°F), nearly mirroring that of the previous month. In the month of September, the average low-temperature usually rests at a pleasant 20.5°C (68.9°F).

Heat index

The heat index value for September is calculated to be a sweltering 36°C (96.8°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended 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 'felt air temperature' or 'apparent temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In September, the average relative humidity is 71%.

Rainfall

The month with the least rainfall is September, when the rain falls for 1 days and typically collects 9mm (0.35") of precipitation.

Sea temperature

In Díli, in September, the average water temperature is 28°C (82.4°F).
Note: Surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as excellent and extremely agreeable for enduring enjoyment in water activities.

Daylight

In September, the average length of the day is 12h and 4min.
On the first day of September, sunrise is at 06:39 and sunset at 18:36. On the last day of the month, sunrise is at 06:22 and sunset at 18:32 +09.

Sunshine

September and October, with an average of 9.6h of sunshine, are months with the most sunshine in Díli.

UV index

The months with the highest UV index are January through April, August through December, 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 average person.
Note: An average maximum UV index of 12 in September leads to these recommendations:
Carry out every crucial safety measure. People with fair skin may sustain burns in fewer than 5 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Be wary! Reflections from sand and water make UV radiation more intense.