September weather forecastRiung, Indonesia
September
Weather in September
The first month of the spring, September, is also a moderately hot month in Riung, Indonesia, with an average temperature varying between 24.8°C (76.6°F) and 27.6°C (81.7°F).The ideal sea water temperature of 28.3°C (82.9°F) and only 5.9 rainfall days, with 12mm (0.47") of accumulated rainfall, makes September the best time for swimming and other water activities.
Temperature
September records an average high-temperature of a still moderately hot 27.6°C (81.7°F), indicating a minor variation from the preceding month. Throughout the nights in September, Riung notes an average low of 24.8°C (76.6°F), a small dip from the daytime peak.Heat index
The heat index for September is estimated at a hot 30°C (86°F). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Humidity
In September, the average relative humidity is 75%.Rainfall
In September, the rain falls for 5.9 days. Throughout September, 12mm (0.47") of precipitation is accumulated. Throughout the year, there are 190.3 rainfall days, and 1021mm (40.2") of precipitation is accumulated.Sea temperature
In Riung, in September, the average water temperature is 28.3°C (82.9°F).Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are regarded as very warm, ensuring all water activities are pleasurable for extended periods without feeling uneasy.
Daylight
The average length of the day in September in Riung is 12h and 4min.On the first day of September, sunrise is at 05:57 and sunset at 17:54. On the last day of the month, sunrise is at 05:40 and sunset at 17:51 WITA.
Sunshine
The average sunshine in September is 9.9h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 7 during September leads to these advisories:
Ward off overexposure. Defence against solar harm is crucial. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Heads up! UV intensity is amplified by reflections from water and sand.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Riung, Indonesia
- Average high temperature in September: 27.6°C
The warmest month (with the highest average high temperature) is November (29.3°C).
The month with the lowest average high temperature is July (26.7°C).
- Average low temperature in September: 24.8°C
The month with the highest average low temperature is December (26.7°C).
The coldest month (with the lowest average low temperature) is August (24°C).
Average pressure in September
Riung, Indonesia
- Average pressure in September: 1011.7mbar
The month with the highest atmospheric pressure is August (1012.1mbar).
The months with the lowest atmospheric pressure are January and December (1007.9mbar).
Average wind speed in September
Riung, Indonesia
- Average wind speed in September: 8.5km/h
The windiest month (with the highest average wind speed) is July (10.7km/h).
The calmest month (with the lowest average wind speed) is November (6.2km/h).
Average humidity in September
Riung, Indonesia
- Average humidity in September: 75%
The months with the highest relative humidity are January and May (78%).
The months with the lowest relative humidity are August and October (74%).
Average rainfall in September
Riung, Indonesia
- Average rainfall in September: 12mm
The wettest month (with the highest rainfall) is January (204mm).
The driest month (with the least rainfall) is August (8mm).
Average rainfall days in September
Riung, Indonesia
- Average rainfall days in September: 5.9 days
The month with the highest number of rainy days is December (26.6 days).
The month with the least rainy days is August (5.5 days).
Average sea temperature in September
Riung, Indonesia
- Average sea temperature in September: 28.3°C
The best month for swimming (with the highest average sea temperature) is December (30.7°C).
The coldest month (with the lowest average sea temperature) is July (27.6°C).
Average daylight in September /
Average sunshine in September
Riung, Indonesia
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 36min).
- Average sunshine in September: 9h and 54min
The month with the most sunshine is December (Average sunshine: 10h and 42min).
The month with the least sunshine is June (Average sunshine: 7h and 0min).
Average sunshine days in September
Riung, Indonesia
- Average sunshine days in September: 20.5 days
The month with the most sunshine days is August (22.1 days).
The month with the least sunshine days is December (2 days).
Average UV index in September
Riung, Indonesia
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Riung, Indonesia
- Average cloud cover in September: 12
The month with the most cloud cover is January (Cloud cover 39).
The month with the least cloud cover is September (Cloud cover 12).
Average visibility in September
Riung, Indonesia
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
