September weather forecast
Mertapada Wetan, Indonesia

September, the first month of the spring in Mertapada Wetan, is a hot month, with an average temperature fluctuating between 30.6°C (87.1°F) and 22.6°C (72.7°F).

Temperature

The shift into September uncovers an average high-temperature of a hot 30.6°C (87.1°F), subtly different from the previous month. An average low-temperature of 22.6°C (72.7°F) is common in Mertapada Wetan during the nights of September.

Heat index

In September, the average heat index is estimated at a sweltering 37°C (98.6°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

September and October, with an average relative humidity of 71%, are the least humid months in Mertapada Wetan.

Rainfall

In Mertapada Wetan, in September, it is raining for 10.7 days, with typically 22mm (0.87") of accumulated precipitation. Throughout the year, in Mertapada Wetan, there are 244.1 rainfall days, and 1216mm (47.87") of precipitation is accumulated.

Daylight

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

Sunshine

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

UV index

The months with the highest UV index in Mertapada Wetan are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 7 in September interprets into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.