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
Weather in September
Temperature
Stepping into September, Belawan records an average high-temperature of a still tropical 31.3°C (88.3°F), almost consistent with August. During the nights in September, Belawan experiences a consistent average temperature of 24.7°C (76.5°F).Heat index
The heat index value for September is calculated to be a scorching 40°C (104°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.Heat index values are typically calculated for conditions of shade and a light breeze. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.
Humidity
In September, the average relative humidity is 76%.Rainfall
In Belawan, in September, during 27.8 rainfall days, 117mm (4.61") of precipitation is typically accumulated. In Belawan, during the entire year, the rain falls for 317.8 days and collects up to 1437mm (56.57") of precipitation.Sea temperature
In September, the average sea temperature in Belawan is 29.6°C (85.3°F).Note: Water temperatures in the range of 25°C (77°F) to 29°C (84.2°F) are warm and delightful, ensuring comfort during water activities over extended periods.
Daylight
The average length of the day in September in Belawan is 12h and 8min.On the first day of September, sunrise is at 06:19 and sunset at 18:30. On the last day of the month, sunrise is at 06:12 and sunset at 18:17 WIB.
Sunshine
In Belawan, the average sunshine in September is 8.8h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index in Belawan. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Belawan, Indonesia. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In September, a regular UV index of 7 translates into these guidelines:
Resist overexposure. Safeguarding from solar damage is indispensable. 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. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Alert! The Sun's UV rays are heightened by the reflection of sand and water.
Frequently asked questions
How hot is September in Belawan?
What is the average humidity in September in Belawan?
How much does it rain in Belawan in September?
What is the sea water temperature in September in Belawan?
How many hours of daylight does Belawan have in September?
When are sunrise and sunset in September in Belawan?
How long on average sun shines in September in Belawan?
What are the months with the highest UV index in Belawan?
What is the month with the lowest UV index in Belawan?
What is the UV index intensity in September in Belawan?
Average temperature in September
Belawan, Indonesia
- Average high temperature in September: 31.3°C
The warmest months (with the highest average high temperature) are May and June (31.9°C).
The month with the lowest average high temperature is December (29.7°C).
- Average low temperature in September: 24.7°C
The month with the highest average low temperature is April (25.6°C).
The coldest month (with the lowest average low temperature) is January (24.1°C).
Average pressure in September
Belawan, Indonesia
- Average pressure in September: 1010.6mbar
The month with the highest atmospheric pressure is January (1010.9mbar).
The month with the lowest atmospheric pressure is May (1009.5mbar).
Average wind speed in September
Belawan, Indonesia
- Average wind speed in September: 6.7km/h
The windiest month (with the highest average wind speed) is February (7.8km/h).
The calmest month (with the lowest average wind speed) is September (6.7km/h).
Average humidity in September
Belawan, Indonesia
- Average humidity in September: 76%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are March, June, July and August (75%).
Average rainfall in September
Belawan, Indonesia
- Average rainfall in September: 117mm
The wettest month (with the highest rainfall) is October (158mm).
The driest month (with the least rainfall) is February (88mm).
Average rainfall days in September
Belawan, Indonesia
- Average rainfall days in September: 27.8 days
The month with the highest number of rainy days is October (28.7 days).
The month with the least rainy days is February (21.3 days).
Average sea temperature in September
Belawan, Indonesia
- Average sea temperature in September: 29.6°C
The best month for swimming (with the highest average sea temperature) is May (30.2°C).
The coldest month (with the lowest average sea temperature) is January (28.8°C).
Average daylight in September /
Average sunshine in September
Belawan, Indonesia
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 18min).
The month with the shortest days is December (Average daylight: 11h and 54min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is June (Average sunshine: 9h and 18min).
The months with the least sunshine are November and December (Average sunshine: 8h and 0min).
Average sunshine days in September
Belawan, Indonesia
- Average sunshine days in September: 1.5 days
The months with the most sunshine days are January and February (5 days).
The month with the least sunshine days is April (0.9 days).
Average UV index in September
Belawan, 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
Belawan, Indonesia
- Average cloud cover in September: 39
The month with the most cloud cover is November (Cloud cover 47).
The months with the least cloud cover are March and June (Cloud cover 31).
Average visibility in September
Belawan, Indonesia
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (10km).
The month with the lowest visibility is November (9km).
Belawan, Indonesia
Weather forecast for your location
2. Allow the app to use your location
