September weather forecast
Banda Aceh, Indonesia

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Weather in September

The first month of the autumn, September, is still a hot month in Banda Aceh, Indonesia, with an average temperature ranging between max 30.6°C and min 24.5°C.

Temperature

Banda Aceh commences September with an average high-temperature of a still tropical 30.6°C, maintaining a close resemblance to the previous month. During September nights, Banda Aceh records an average temperature of 24.5°C.

Heat index

September's mean heat index is evaluated at a sweltering 38°C. Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Realize that the values for the heat index are set for shaded places and light winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

The average relative humidity in September in Banda Aceh is 75%.

Rainfall

In Banda Aceh, Indonesia, during September, the rain falls for 14.6 days and regularly aggregates up to 65mm of precipitation. Throughout the year, there are 225.1 rainfall days, and 1172mm of precipitation is accumulated.

Snowfall

The only month with snowfall is September. The month with the most snowfall days is September, when snow falls for 0.1 days.

Sea temperature

In Banda Aceh, the average seawater temperature in September is 29.2°C.
Note: Water temperatures in the range of 25°C to 29°C are warm and delightful, ensuring comfort during water activities over extended periods.

Daylight

In Banda Aceh, the average length of the day in September is 12h and 9min.
On the first day of the month, sunrise is at 06:32 and sunset at 18:45. On the last day of September, sunrise is at 06:26 and sunset at 18:31 WIB.

Sunshine

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 Banda Aceh. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: The UV index of 7 during September translates into the following guidance:
Guard oneself from overexposure. Defence against sun injury is vital. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
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FAQ

Is it hot in Banda Aceh during September?

In Banda Aceh, in September, the average high-temperature is 30.6°C, and the average low-temperature is 24.5°C. In September, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is evaluated at 38°C.

What is the average humidity in September in Banda Aceh?

In September, the average relative humidity in Banda Aceh is 75%.

How many days does it rain in September in Banda Aceh?

In September, in Banda Aceh, the rain falls for 14.6 days. Throughout September, 65mm of precipitation is accumulated.

When does it snow the most in Banda Aceh?

September has the most snowfall days of the year in Banda Aceh, Indonesia. Snow falls for 0.1 days.

When does it start to snow in Banda Aceh?

September is the first month it typically snows in Banda Aceh, Indonesia. Throughout September, there are 0.1 snowfall days.

What is the water temperature in September in Banda Aceh?

In Banda Aceh, Indonesia, in September, the average water temperature is 29.2°C. For swimming, diving, and other water activities, temperatures between 25°C and 29°C are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Banda Aceh have in September?

In September, the average day length is 12h and 9min.

What time are sunrise and sunset in September in Banda Aceh?

On the first day of September, sunrise is at 06:32 and sunset at 18:45. On the last day of the month, sunrise is at 06:26 and sunset at 18:31 WIB.

How many hours of sunshine does Banda Aceh have in September?

The average sunshine duration in September in Banda Aceh is 8.8h.

When is the highest UV index in Banda Aceh?

The months with the highest UV index are January through December, with an average maximum UV index of 7.

When is the lowest UV index in Banda Aceh?

January through December, with an average maximum UV index of 7, are months with the lowest UV index.

What is the UV index intensity in September in Banda Aceh?

The average daily maximum UV index in September in Banda Aceh is 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Banda Aceh, Indonesia

Average temperature in September - Banda Aceh, Indonesia
  • Average high temperature in September: 30.6°C

The warmest month (with the highest average high temperature) is June (31.3°C).
The month with the lowest average high temperature is December (28.9°C).

  • Average low temperature in September: 24.5°C

The month with the highest average low temperature is May (25.4°C).
The coldest months (with the lowest average low temperature) are January and February (23.8°C).

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Average pressure in September
Banda Aceh, Indonesia

Average pressure in September - Banda Aceh, Indonesia
  • Average pressure in September: 1010.5mbar

The months with the highest atmospheric pressure are January and September (1010.5mbar).
The month with the lowest atmospheric pressure is May (1009.4mbar).

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Average wind speed in September
Banda Aceh, Indonesia

Average wind speed in September - Banda Aceh, Indonesia
  • Average wind speed in September: 10km/h

The windiest month (with the highest average wind speed) is July (11.2km/h).
The calmest month (with the lowest average wind speed) is April (6.7km/h).

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Average humidity in September
Banda Aceh, Indonesia

Average humidity in September - Banda Aceh, Indonesia
  • Average humidity in September: 75%

The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are July and August (73%).

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Average rainfall in September
Banda Aceh, Indonesia

Average rainfall in September - Banda Aceh, Indonesia
  • Average rainfall in September: 65mm

The wettest months (with the highest rainfall) are May and November (160mm).
The driest month (with the least rainfall) is June (46mm).

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Average rainfall days in September
Banda Aceh, Indonesia

Average rainfall days in September - Banda Aceh, Indonesia
  • Average rainfall days in September: 14.6 days

The month with the highest number of rainy days is November (24.9 days).
The month with the least rainy days is July (11.3 days).

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Average snowfall days in September
Banda Aceh, Indonesia

Average snowfall days in September - Banda Aceh, Indonesia
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).

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Average sea temperature in September
Banda Aceh, Indonesia

Average sea temperature in September - Banda Aceh, Indonesia
  • Average sea temperature in September: 29.2°C

The best month for swimming (with the highest average sea temperature) is April (30.1°C).
The coldest month (with the lowest average sea temperature) is January (28.5°C).

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Average daylight in September /
Average sunshine in September
Banda Aceh, Indonesia

Average daylight in September / Average sunshine in September - Banda Aceh, Indonesia
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 24min).
The month with the shortest days is December (Average daylight: 11h and 48min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is June (Average sunshine: 9h and 0min).
The month with the least sunshine is December (Average sunshine: 7h and 30min).

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Average sunshine days in September
Banda Aceh, Indonesia

Average sunshine days in September - Banda Aceh, Indonesia
  • Average sunshine days in September: 13.3 days

The month with the most sunshine days is July (17.9 days).
The month with the least sunshine days is November (3.2 days).

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Average UV index in September
Banda Aceh, Indonesia

Average UV index in September - Banda Aceh, 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).

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Average cloud cover in September
Banda Aceh, Indonesia

Average cloud cover in September - Banda Aceh, Indonesia
  • Average cloud cover in September: 38

The month with the most cloud cover is November (Cloud cover 47).
The months with the least cloud cover are February and June (Cloud cover 31).

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Average visibility in September
Banda Aceh, Indonesia

Average visibility in September - Banda Aceh, Indonesia
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, May, June, July, August, September, October and December (10km).
The months with the lowest visibility are April and November (9km).

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Banda Aceh, Indonesia

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