September weather forecast
Simuluk, Indonesia

The first month of the spring, September, is a tropical month in Simuluk, Indonesia, with an average temperature fluctuating between 30.6°C (87.1°F) and 22.6°C (72.7°F).

Temperature

An average high-temperature of a hot 30.6°C (87.1°F) marks September, exhibiting a close resemblance to the conditions in August. Simuluk encounters an average low-temperature of 22.6°C (72.7°F) during September nights.

Heat index

Throughout September, the heat index is evaluated at a very hot 37°C (98.6°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
It is important to note that the heat index values are for shaded areas and light wind scenarios. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are of high significance for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The months with the lowest humidity in Simuluk are September and October, with an average relative humidity of 71%.

Rainfall

In September, in Simuluk, the rain falls for 10.7 days. Throughout September, 22mm (0.87") of precipitation is accumulated. Throughout the year, there are 244.1 rainfall days, and 1216mm (47.87") of precipitation is accumulated.

Daylight

In September, the average length of the day in Simuluk is 12h and 4min.
On the first day of the month, sunrise is at 05:46 and sunset at 17:45. On the last day of September, in Simuluk, sunrise is at 05:30 and sunset at 17:40 WIB.

Sunshine

The months with the most sunshine are July through September, with an average of 9.7h of sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index in Simuluk are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 7 in September transforms into the following instructions:
Resist extreme sun exposure. Guarding against solar damage is essential. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.