September weather forecast
Calukan, Indonesia

September

Weather in September

September, the first month of the spring in Calukan, is still a hot month, with an average temperature ranging between max 31.7°C (89.1°F) and min 24.4°C (75.9°F).

Temperature

As August transitions into September, the average high-temperature rests at a still hot 31.7°C (89.1°F), maintaining a close resemblance to the previous month. In Calukan, the September nights cool down to an average low of 24.4°C (75.9°F).

Heat index

The heat index in September is estimated at a torrid 38°C (100.4°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', comes about by integrating the temperature readings with the humidity levels. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

The average relative humidity in September is 65%.

Rainfall

In Calukan, in September, it is raining for 4.1 days, with typically 8mm (0.31") of accumulated precipitation. In Calukan, Indonesia, during the entire year, the rain falls for 187.8 days and collects up to 839mm (33.03") of precipitation.

Daylight

In Calukan, the average length of the day in September is 12h and 4min.
On the first day of September, sunrise is at 05:29 and sunset at 17:28. On the last day of the month, sunrise is at 05:14 and sunset at 17:24 WIB.

Sunshine

The months with the most sunshine are August through October, with an average of 9.9h of sunshine.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. 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 risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 7 during September translates into the following directions:
Deflect overexposure. Sun protection is a necessity. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.

Frequently asked questions

How hot does it get in September?
In Calukan, in September, the average high-temperature is 31.7°C (89.1°F), and the average low-temperature is 24.4°C (75.9°F). In September, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is estimated at 38°C (100.4°F).
What is the average humidity in September?
In September, the average relative humidity is 65%.
How many days does it rain in September?
In Calukan, in September, during 4.1 rainfall days, 8mm (0.31") of precipitation is typically accumulated.
How many hours of daylight does Calukan have in September?
In September, the average day length in Calukan is 12h and 4min.
When are sunrise and sunset in September?
In September, on the first day of the month, sunrise is at 05:29 and sunset at 17:28. On the last day of the month, sunrise is at 05:14 and sunset at 17:24 WIB.
What are the months with the most sunshine?
August through October, with an average of 9.9h of sunshine, are months with the most sunshine.
How many hours of sunshine does Calukan have in September?
In Calukan, Indonesia, the average sunshine duration in September is 9.9h.
What is the month with the highest UV index?
January through December, with an average maximum UV index of 7, are months with the highest UV index.
When is the lowest UV index?
The months with the lowest UV index are January through December, with an average maximum UV index of 7.
What is the UV index intensity in September?
The average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Calukan, Indonesia
  • Average high temperature in September: 31.7°C

The warmest month (with the highest average high temperature) is October (32.9°C).
The months with the lowest average high temperature are January, February and July (30.1°C).

  • Average low temperature in September: 24.4°C

The month with the highest average low temperature is November (26.5°C).
The coldest month (with the lowest average low temperature) is August (24.2°C).

Average pressure in September
Calukan, Indonesia
  • Average pressure in September: 1011.3mbar

The month with the highest atmospheric pressure is August (1011.4mbar).
The month with the lowest atmospheric pressure is December (1008.7mbar).

Average wind speed in September
Calukan, Indonesia
  • Average wind speed in September: 9.7km/h

The windiest month (with the highest average wind speed) is August (9.9km/h).
The calmest month (with the lowest average wind speed) is April (6.3km/h).

Average humidity in September
Calukan, Indonesia
  • Average humidity in September: 65%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is October (63%).

Average rainfall in September
Calukan, Indonesia
  • Average rainfall in September: 8mm

The wettest month (with the highest rainfall) is February (179mm).
The driest month (with the least rainfall) is August (4mm).

Average rainfall days in September
Calukan, Indonesia
  • Average rainfall days in September: 4.1 days

The month with the highest number of rainy days is January (27 days).
The month with the least rainy days is August (3.7 days).

Average daylight in September /
Average sunshine in September
Calukan, 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 5min

The months with the most sunshine are August, September and October (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 8h and 6min).

Average sunshine days in September
Calukan, Indonesia
  • Average sunshine days in September: 23.7 days

The month with the most sunshine days is August (26 days).
The month with the least sunshine days is February (2.8 days).

Average UV index in September
Calukan, 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
Calukan, Indonesia
  • Average cloud cover in September: 12

The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 11).

Average visibility in September
Calukan, Indonesia
  • Average visibility in September: 10km

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

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