September weather forecastPoso, Indonesia

September

Weather in September

The first month of the spring, September, is still a warm month in Poso, Indonesia, with an average temperature ranging between min 19.8°C (67.6°F) and max 27.8°C (82°F).

Temperature

At the onset of September, Poso records an average high-temperature of a still warm 27.8°C (82°F), showing little deviation from the preceding month. During the nights in September, an average low-temperature of 19.8°C (67.6°F) is observed.

Heat index

September's heat index is calculated to be a tropical 31°C (87.8°F). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.
Remember that heat index calculations are made for conditions in the shade with light wind. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.

Humidity

With an average relative humidity of 79%, September is the least humid month in Poso, Indonesia.

Rainfall

September is the month with the least rainfall. Rain falls for 24.2 days and accumulates 79mm (3.11") of precipitation.

Daylight

In September, the average length of the day is 12h and 6min.
On the first day of September, sunrise is at 05:54 and sunset at 17:59. On the last day of the month, sunrise is at 05:43 and sunset at 17:50 WITA.

Sunshine

In Poso, the average sunshine in September is 9.3h.

UV index

January through December, with an average maximum UV index of 6, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 6 in September translates into these instructions:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.

Updated: Aug 30, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The average high-temperature, in September, in Poso, is 27.8°C (82°F), while the average low-temperature is 19.8°C (67.6°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in September is calculated to be 31°C (87.8°F).

The least humid month is September, with an average relative humidity of 79%.

The average relative humidity in September is 79%.

The month with the least rainfall is September, when the rain falls for 24.2 days and typically collects 79mm (3.11") of precipitation.

In Poso, Indonesia, during September, the rain falls for 24.2 days and regularly aggregates up to 79mm (3.11") of precipitation.

In Poso, the average day length in September is 12h and 6min.

On the first day of September, sunrise is at 05:54 and sunset at 17:59. On the last day of the month, sunrise is at 05:43 and sunset at 17:50 WITA.

The average sunshine duration in September is 9.3h.

January through December, with an average maximum UV index of 6, are months with the highest UV index.

January through December, with an average maximum UV index of 6, are months with the lowest UV index.

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

27.3°C

27.8°C

28.3°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

6.8km/h

6.2km/h

6.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

3.4

4.5

3.2

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Poso, Indonesia

Average high temperature in September: 27.8°C

The warmest month (with the highest average high temperature) is October (28.3°C).
The month with the lowest average high temperature is March (26.3°C).

Average low temperature in September: 19.8°C

The month with the highest average low temperature is May (21.2°C).
The coldest month (with the lowest average low temperature) is September (19.8°C).

Average pressure in September
Poso, Indonesia

Average pressure in September: 1011.5mbar

The months with the highest atmospheric pressure are August and September (1011.5mbar).
The month with the lowest atmospheric pressure is December (1009.5mbar).

Average wind speed in September
Poso, Indonesia

Average wind speed in September: 5.9km/h

The windiest month (with the highest average wind speed) is August (6.1km/h).
The calmest month (with the lowest average wind speed) is March (4.2km/h).

Average humidity in September
Poso, Indonesia

Average humidity in September: 79%

The months with the highest relative humidity are April, May and June (85%).
The month with the lowest relative humidity is September (79%).

Average rainfall in September
Poso, Indonesia

Average rainfall in September: 79mm

The wettest month (with the highest rainfall) is March (144mm).
The driest month (with the least rainfall) is September (79mm).

Average rainfall days in September
Poso, Indonesia

Average rainfall days in September: 24.2 days

The month with the highest number of rainy days is January (28.7 days).
The month with the least rainy days is September (24.2 days).

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

Average daylight in September: 12h and 6min

The month with the longest days is December (Average daylight: 12h and 12min).
The month with the shortest days is June (Average daylight: 12h and 0min).

Average sunshine in September: 9h and 18min

The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is February (Average sunshine: 8h and 0min).

Average sunshine days in September
Poso, Indonesia

Average sunshine days in September: 4.5 days

The month with the most sunshine days is September (4.5 days).
The month with the least sunshine days is January (1.6 days).

Average UV index in September
Poso, Indonesia

Average UV index in September: 6

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).

Average cloud cover in September
Poso, Indonesia

Average cloud cover in September: 32

The month with the most cloud cover is April (Cloud cover 49).
The month with the least cloud cover is September (Cloud cover 32).

Average visibility in September
Poso, Indonesia

Average visibility in September: 10km

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