September weather forecastJohol, Malaysia
September
Weather in September
September, the first month of the autumn in Johol, is also a hot month, with an average temperature fluctuating between 23.8°C (74.8°F) and 32°C (89.6°F).Temperature
The shift into September uncovers an average high-temperature of a still tropical 32°C (89.6°F), maintaining the same temperature as the previous month. Johol cools down to an average low-temperature of 23.8°C (74.8°F) throughout the month of September.Heat index
For most parts of September, the heat index is estimated at a blistering 42°C (107.6°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.Data suggests that the heat index is set for environments in shade and with a light wind. 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 'real feel' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of 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 hold particular significance for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.
Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 74%.Rainfall
The month with the least rainfall is September, when the rain falls for 19.9 days and typically collects 44mm (1.73") of precipitation.Daylight
In September, the average length of the day is 12h and 8min.On the first day of September, sunrise is at 7:05 am and sunset at 7:15 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 7:03 pm +08.
Sunshine
The month with the most sunshine is September, with an average of 8.9h of sunshine.UV index
The months with the highest UV index are January through December, with an average maximum UV index of 7. 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 threat to health from exposure to the Sun's UV radiation for average individuals.Note: An average maximum UV index of 7 in September leads to these recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Johol, Malaysia
- Average high temperature in September: 32°C
The warmest months (with the highest average high temperature) are March, May and October (32.3°C).
The month with the lowest average high temperature is December (30.5°C).
- Average low temperature in September: 23.8°C
The month with the highest average low temperature is May (24.4°C).
The coldest months (with the lowest average low temperature) are January and February (22.9°C).
Average pressure in September
Johol, Malaysia
- Average pressure in September: 1009.6mbar
The months with the highest atmospheric pressure are January and February (1010.3mbar).
The month with the lowest atmospheric pressure is May (1008.6mbar).
Average wind speed in September
Johol, Malaysia
- Average wind speed in September: 5.3km/h
The windiest month (with the highest average wind speed) is February (6.8km/h).
The calmest month (with the lowest average wind speed) is May (4.6km/h).
Average humidity in September
Johol, Malaysia
- Average humidity in September: 74%
The month with the highest relative humidity is December (83%).
The months with the lowest relative humidity are August and September (74%).
Average rainfall in September
Johol, Malaysia
- Average rainfall in September: 44mm
The wettest month (with the highest rainfall) is November (132mm).
The driest month (with the least rainfall) is September (44mm).
Average rainfall days in September
Johol, Malaysia
- Average rainfall days in September: 19.9 days
The month with the highest number of rainy days is December (26.9 days).
The months with the least rainy days are July and September (19.9 days).
Average daylight in September /
Average sunshine in September
Johol, Malaysia
- Average daylight in September: 12h and 6min
The month with the longest days is June (Average daylight: 12h and 18min).
The month with the shortest days is December (Average daylight: 12h and 0min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is September (Average sunshine: 8h and 54min).
The month with the least sunshine is December (Average sunshine: 7h and 12min).
Average sunshine days in September
Johol, Malaysia
- Average sunshine days in September: 7.1 days
The month with the most sunshine days is October (8.5 days).
The month with the least sunshine days is December (2.4 days).
Average UV index in September
Johol, Malaysia
- 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
Johol, Malaysia
- Average cloud cover in September: 36
The months with the most cloud cover are November and December (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in September
Johol, Malaysia
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, October, November and December (9km).
