Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
September's onset brings an average high-temperature of a still hot 30.5°C, showing a minute difference from August's 30.1°C. During the nights in September, Pemalang experiences a consistent average temperature of 23.5°C.Heat index
September's mean heat index is computed to be a very hot 36°C. More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. 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 'felt air temperature' or 'real feel', is a value derived by merging air temperature with the humidity to convey how the climate feels. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.
Humidity
September and October, with an average relative humidity of 70%, are the least humid months in Pemalang.Rainfall
In Pemalang, in September, during 10 rainfall days, 17mm of precipitation is typically accumulated. Throughout the year, in Pemalang, there are 234.1 rainfall days, and 892mm of precipitation is accumulated.Sea temperature
In Pemalang, the average seawater temperature in September is 28.4°C.Note: Surface water temperatures ranging from 25°C to 29°C are seen as ideal and highly pleasant for extended enjoyment in all water activities.
Daylight
The average length of the day in September in Pemalang is 12h and 4min.On the first day of the month, sunrise is at 05:42 and sunset at 17:41. On the last day of September, sunrise is at 05:27 and sunset at 17:37 WIB.
Sunshine
In September, the average sunshine in Pemalang is 9.7h.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 in Pemalang. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 7 in September translates into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Beware! Reflecting off water and sand, UV rays are much stronger.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Pemalang during September?
What are the least humid months in Pemalang?
What is the average humidity in September in Pemalang?
How much does it rain in Pemalang in September?
What is the sea water temperature in September in Pemalang?
How many hours of daylight does Pemalang have in September?
What time are sunrise and sunset in September in Pemalang?
How many hours of sunshine does Pemalang have in September?
When is the highest UV index in Pemalang?
What are the months with the lowest UV index in Pemalang?
What is the UV index reading in September in Pemalang?
Average temperature in September
Pemalang, Indonesia
- Average high temperature in September: 30.5°C
The warmest month (with the highest average high temperature) is October (31.2°C).
The month with the lowest average high temperature is February (29.4°C).
- Average low temperature in September: 23.5°C
The month with the highest average low temperature is December (25.5°C).
The coldest month (with the lowest average low temperature) is August (23.3°C).
Average pressure in September
Pemalang, Indonesia
- Average pressure in September: 1011.5mbar
The month with the highest atmospheric pressure is September (1011.5mbar).
The month with the lowest atmospheric pressure is December (1009.1mbar).
Average wind speed in September
Pemalang, Indonesia
- Average wind speed in September: 8.1km/h
The windiest month (with the highest average wind speed) is January (10.3km/h).
The calmest month (with the lowest average wind speed) is April (6.3km/h).
Average humidity in September
Pemalang, Indonesia
- Average humidity in September: 70%
The month with the highest relative humidity is February (79%).
The months with the lowest relative humidity are September and October (70%).
Average rainfall in September
Pemalang, Indonesia
- Average rainfall in September: 17mm
The wettest month (with the highest rainfall) is January (167mm).
The driest month (with the least rainfall) is August (15mm).
Average rainfall days in September
Pemalang, Indonesia
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is January (26.8 days).
The month with the least rainy days is August (8.3 days).
Average sea temperature in September
Pemalang, Indonesia
- Average sea temperature in September: 28.4°C
The best month for swimming (with the highest average sea temperature) is December (30.2°C).
The coldest month (with the lowest average sea temperature) is August (27.9°C).
Average daylight in September /
Average sunshine in September
Pemalang, Indonesia
- Average daylight in September: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 42min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 8h and 6min).
Average sunshine days in September
Pemalang, Indonesia
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is August (18.4 days).
The month with the least sunshine days is February (2.4 days).
Average UV index in September
Pemalang, 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
Pemalang, Indonesia
- Average cloud cover in September: 20
The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Pemalang, 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).
