September weather forecast
Mataram, Indonesia

An increase in rainfall to 21mm (0.83") signals the arrival of wetter days in September. Despite the introduction of more rain, temperatures remain nearly unchanged providing steady weather. Outdoor activities continue to thrive with warm day temperatures and moderate wind speeds. September marks an uptick in humidity, matching the moistness introduced by the expanded rains. The weather nonetheless remains inviting for adventurous exploitation of terrain and sea.

Temperature

In September, Mataram notes an average high-temperature of a still warm 27.6°C (81.7°F), hardly different from the preceding month. Mataram sees a gentle drop from the daily peak temperature in September, with an average low settling at a still warm 23.6°C (74.5°F).

Heat index

During September, the heat index is appraised at a tropical 31°C (87.8°F). With constant exposure and activity, a state of weariness might ensue, leading to potential heat cramps.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', blends air temperature and moisture content to represent the felt temperature to humans. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.

Humidity

The months with the highest humidity are January through March, May through July, September and December, with an average relative humidity of 79%.

Rainfall

In Mataram, in September, it is raining for 11.5 days, with typically 21mm (0.83") of accumulated precipitation. Throughout the year, there are 231.2 rainfall days, and 1002mm (39.45") of precipitation is accumulated.

Sea temperature

In Mataram, in September, the average water temperature is 26.8°C (80.2°F).
Note: Swimming, diving, and other activities in water temperatures between 25°C (77°F) and 29°C (84.2°F) are thought to be quite enjoyable and satisfying for extended periods, with no discomfort.

Daylight

The average length of the day in September is 12h and 4min.
On the first day of the month, sunrise is at 06:17 and sunset at 18:14. On the last day of September, sunrise is at 06:00 and sunset at 18:10 WITA.

Sunshine

The average sunshine in September in Mataram, Indonesia, is 9.6h.

UV index

The months with the highest UV index in Mataram are January through May, July 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 average person.
Note: An average UV index of 7 in September transforms into this advice:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be vigilant! The Sun's UV rays get a boost from sand and water reflections.