September weather forecast
Manado, Indonesia

Weather in September

September, the first month of the autumn in Manado, is also a hot month, with an average temperature fluctuating between 24°C (75.2°F) and 30.4°C (86.7°F).

Temperature

In September, the average high-temperature is relatively the same as in August - a still hot 30.4°C (86.7°F). In September, in Manado, the average low-temperature is 24°C (75.2°F).

Heat index

The average heat index in September is evaluated at a torrid 38°C (100.4°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'apparent temperature', 'feels like', or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like metabolic differences, differences in body mass, height, and shape, wind, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

With an average relative humidity of 76%, September is the least humid month.

Rainfall

September is the month with the least rainfall. Rain falls for 19.5 days and accumulates 69mm (2.72") of precipitation.

Sea temperature

September is the month with the coldest seawater in Manado, Indonesia, with an average sea temperature of 28.6°C (83.5°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

The average length of the day in September is 12h and 7min.
On the first day of the month, sunrise is at 05:36 and sunset at 17:45. On the last day of September, sunrise is at 05:27 and sunset at 17:33 WITA.

Sunshine

The month with the most sunshine is September, with an average of 9.3h of sunshine.

UV index

The months with the highest UV index in Manado 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 in Manado. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 7 in September interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in September in Manado?

In Manado, Indonesia, in September, the average high-temperature is 30.4°C (86.7°F), and the average low-temperature is 24°C (75.2°F). in September, the average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 38°C (100.4°F).

What is the least humid month in Manado?

The least humid month in Manado, Indonesia, is September, with an average relative humidity of 76%.

What is the average humidity in September in Manado?

In Manado, Indonesia, the average relative humidity in September is 76%.

What is the driest month in Manado?

September is the month with the least rainfall in Manado. Rain falls for 19.5 days and accumulates 69mm (2.72") of precipitation.

How many days does it rain in September in Manado?

In Manado, in September, during 19.5 rainfall days, 69mm (2.72") of precipitation is typically accumulated.

When is the sea coldest in Manado?

September is the month with the coldest seawater in Manado, with an average sea temperature of 28.6°C (83.5°F).

How warm is the water in September in Manado?

In September, the average sea temperature in Manado is 28.6°C (83.5°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Manado have in September?

In September, the average day length in Manado is 12h and 7min.

When is the sunrise / sunset in September in Manado?

On the first day of September in Manado, Indonesia, sunrise is at 05:36 and sunset at 17:45. On the last day of the month, sunrise is at 05:27 and sunset at 17:33 WITA.

What month has the most sunshine in Manado?

The month with the most sunshine in Manado, Indonesia, is September, with an average of 9.3h of sunshine.

How many hours of sunshine does Manado have in September?

The average sunshine duration in September is 9.3h.

When is the highest UV index in Manado?

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

When is the lowest UV index in Manado?

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

What is the UV index reading in September in Manado?

In September, the average daily maximum UV index in Manado is 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.

Average temperature in September
Manado, Indonesia

Average temperature in September - Manado, Indonesia
  • Average high temperature in September: 30.4°C

The warmest month (with the highest average high temperature) is October (30.5°C).
The month with the lowest average high temperature is February (28.1°C).

  • Average low temperature in September: 24°C

The month with the highest average low temperature is May (24.8°C).
The coldest month (with the lowest average low temperature) is March (23.8°C).

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Average pressure in September
Manado, Indonesia

Average pressure in September - Manado, Indonesia
  • Average pressure in September: 1010.1mbar

The month with the highest atmospheric pressure is September (1010.1mbar).
The month with the lowest atmospheric pressure is December (1008.5mbar).

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Average wind speed in September
Manado, Indonesia

Average wind speed in September - Manado, Indonesia
  • Average wind speed in September: 5.7km/h

The windiest month (with the highest average wind speed) is February (8.2km/h).
The calmest month (with the lowest average wind speed) is May (5.3km/h).

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Average humidity in September
Manado, Indonesia

Average humidity in September - Manado, Indonesia
  • Average humidity in September: 76%

The months with the highest relative humidity are January, February and March (83%).
The month with the lowest relative humidity is September (76%).

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Average rainfall in September
Manado, Indonesia

Average rainfall in September - Manado, Indonesia
  • Average rainfall in September: 69mm

The wettest month (with the highest rainfall) is June (161mm).
The driest month (with the least rainfall) is September (69mm).

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Average rainfall days in September
Manado, Indonesia

Average rainfall days in September - Manado, Indonesia
  • Average rainfall days in September: 19.5 days

The month with the highest number of rainy days is May (28.3 days).
The month with the least rainy days is September (19.5 days).

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Average sea temperature in September
Manado, Indonesia

Average sea temperature in September - Manado, Indonesia
  • Average sea temperature in September: 28.6°C

The best month for swimming (with the highest average sea temperature) is May (29.8°C).
The coldest month (with the lowest average sea temperature) is September (28.6°C).

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Average daylight in September /
Average sunshine in September
Manado, Indonesia

Average daylight in September / Average sunshine in September - Manado, Indonesia
  • Average daylight in September: 12h and 7min

The month with the longest days is June (Average daylight: 12h and 13min).
The month with the shortest days is December (Average daylight: 12h and 2min).

  • Average sunshine in September: 9h and 18min

The month with the most sunshine is September (Average sunshine: 9h and 18min).
The months with the least sunshine are January and February (Average sunshine: 7h and 36min).

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Average sunshine days in September
Manado, Indonesia

Average sunshine days in September - Manado, Indonesia
  • Average sunshine days in September: 8 days

The month with the most sunshine days is August (8.6 days).
The month with the least sunshine days is November (1 days).

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Average UV index in September
Manado, Indonesia

Average UV index in September - Manado, 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
Manado, Indonesia

Average cloud cover in September - Manado, Indonesia
  • Average cloud cover in September: 29

The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is September (Cloud cover 29).

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Average visibility in September
Manado, Indonesia

Average visibility in September - Manado, 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).

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