September weather forecastCilacap, Indonesia
September
Weather in September
September in Cilacap brings a small increase in rainfall but is otherwise fairly consistent with the weather pattern in August. The relative humidity remains the same while temperatures go up marginally, keeping the city's overall climate on the warmer side. The wind speed, on the other hand, gets mild again, reverting to its typical, less daunting pattern. Like August, UV, visibility, and pressure don’t register any considerable changes, still compelling individuals to prioritize sunblock and hydrating measures. The slightly higher temperatures can make September feel warmer than August, even with the mild rainfall levels.Temperature
The advent of September denotes an average high-temperature of a still moderately hot 27.3°C (81.1°F), subtly different from August's 27°C (80.6°F). The nights of September anticipate a slight dip from daytime high temperatures, settling to an average low-temperature of 23.1°C (73.6°F).Heat index
The heat index value for September is evaluated at a tropical 31°C (87.8°F). With sustained exposure and activity, exhaustion becomes probable, resulting in heat cramps.In terms of the heat index, values are set with light wind and shade conditions in mind. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Humidity
In Cilacap, the average relative humidity in September is 81%.Rainfall
In Cilacap, in September, during 19.1 rainfall days, 51mm (2.01") of precipitation is typically accumulated. In Cilacap, during the entire year, the rain falls for 280.3 days and collects up to 1371mm (53.98") of precipitation.Daylight
The average length of the day in September is 12h and 4min.On the first day of the month, sunrise is at 05:44 and sunset at 17:42. On the last day of September, sunrise is at 05:28 and sunset at 17:38 WIB.
Sunshine
In Cilacap, the average sunshine in September is 8h.UV index
The months with the lowest UV index are July through September, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 6 suggests this advice:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Cilacap, Indonesia
- Average high temperature in September: 27.3°C
The warmest month (with the highest average high temperature) is March (29.5°C).
The month with the lowest average high temperature is August (27°C).
- Average low temperature in September: 23.1°C
The months with the highest average low temperature are January and May (25.4°C).
The coldest month (with the lowest average low temperature) is August (23°C).
Average pressure in September
Cilacap, Indonesia
- Average pressure in September: 1012mbar
The month with the highest atmospheric pressure is September (1012mbar).
The month with the lowest atmospheric pressure is December (1009.2mbar).
Average wind speed in September
Cilacap, Indonesia
- Average wind speed in September: 15.2km/h
The windiest month (with the highest average wind speed) is August (17.1km/h).
The calmest month (with the lowest average wind speed) is March (8.9km/h).
Average humidity in September
Cilacap, Indonesia
- Average humidity in September: 81%
The months with the highest relative humidity are June and July (82%).
The months with the lowest relative humidity are January, March and December (79%).
Average rainfall in September
Cilacap, Indonesia
- Average rainfall in September: 51mm
The wettest month (with the highest rainfall) is March (152mm).
The driest month (with the least rainfall) is August (36mm).
Average rainfall days in September
Cilacap, Indonesia
- Average rainfall days in September: 19.1 days
The month with the highest number of rainy days is April (25.7 days).
The month with the least rainy days is September (19.1 days).
Average daylight in September /
Average sunshine in September
Cilacap, 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 42min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is February (Average sunshine: 9h and 54min).
The months with the least sunshine are July and November (Average sunshine: 7h and 36min).
Average sunshine days in September
Cilacap, Indonesia
- Average sunshine days in September: 4.2 days
The month with the most sunshine days is December (5.7 days).
The month with the least sunshine days is May (2.3 days).
Average UV index in September
Cilacap, Indonesia
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, May, June, October, November and December (UV index 7).
The months with the lowest UV index are July, August and September (UV index 6).
Average cloud cover in September
Cilacap, Indonesia
- Average cloud cover in September: 47
The month with the most cloud cover is December (Cloud cover 49).
The months with the least cloud cover are April and May (Cloud cover 40).
Average visibility in September
Cilacap, Indonesia
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
