September weather forecastWonosari, Indonesia

September

Weather in September

September, the first month of the spring in Wonosari, is still a warm month, with temperature in the range of an average low of 21.3°C (70.3°F) and an average high of 28.2°C (82.8°F).

Temperature

A minimal variation is noted in Wonosari's average high-temperature at the onset of September, reaching a still moderately hot 28.2°C (82.8°F) from August's 27.7°C (81.9°F). An average low-temperature of 21.3°C (70.3°F) is expected during September.

Heat index

The heat index value for September is estimated at a tropical 33°C (91.4°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', binds temperature metrics with humidity values to give a sense of the actual warmth. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.

Humidity

September and October, with an average relative humidity of 80%, are the least humid months in Wonosari.

Rainfall

In Wonosari, during September, the rain falls for 18.3 days and regularly aggregates up to 55mm (2.17") of precipitation. Throughout the year, there are 296.5 rainfall days, and 1844mm (72.6") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 4min.
On the first day of September, sunrise is at 05:38 and sunset at 17:36. On the last day of the month, sunrise is at 05:22 and sunset at 17:32 WIB.

Sunshine

In Wonosari, the average sunshine in September is 8.6h.

UV index

The months with the lowest UV index are January, April through September, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In September, the maximum UV index of 6 translates into these guidelines:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.

Updated: Jul 26, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In September, in Wonosari, the average high-temperature is 28.2°C (82.8°F), and the average low-temperature is 21.3°C (70.3°F). In September, the average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is estimated at 33°C (91.4°F).

The months with the lowest humidity are September and October, with an average relative humidity of 80%.

In September, the average relative humidity is 80%.

In September, in Wonosari, the rain falls for 18.3 days. Throughout September, 55mm (2.17") of precipitation is accumulated.

In September, the average day length is 12h and 4min.

In September, on the first day of the month, sunrise is at 05:38 and sunset at 17:36. On the last day of the month, sunrise is at 05:22 and sunset at 17:32 WIB.

In Wonosari, the average sunshine duration in September is 8.6h.

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

In Wonosari, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from 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

27.7°C

28.2°C

29.1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

13.1km/h

12.6km/h

11.7km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

12.3

7.3

2.8

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Wonosari, Indonesia

Average high temperature in September: 28.2°C

The warmest month (with the highest average high temperature) is October (29.1°C).
The month with the lowest average high temperature is July (27.3°C).

Average low temperature in September: 21.3°C

The months with the highest average low temperature are January and November (23.3°C).
The coldest month (with the lowest average low temperature) is August (21°C).

Average pressure in September
Wonosari, Indonesia

Average pressure in September: 1011.8mbar

The months with the highest atmospheric pressure are August and September (1011.8mbar).
The month with the lowest atmospheric pressure is December (1009.1mbar).

Average wind speed in September
Wonosari, Indonesia

Average wind speed in September: 10.7km/h

The windiest month (with the highest average wind speed) is August (11.5km/h).
The calmest month (with the lowest average wind speed) is April (6.9km/h).

Average humidity in September
Wonosari, Indonesia

Average humidity in September: 80%

The months with the highest relative humidity are May and June (84%).
The months with the lowest relative humidity are September and October (80%).

Average rainfall in September
Wonosari, Indonesia

Average rainfall in September: 55mm

The wettest month (with the highest rainfall) is March (242mm).
The driest month (with the least rainfall) is August (25mm).

Average rainfall days in September
Wonosari, Indonesia

Average rainfall days in September: 18.3 days

The month with the highest number of rainy days is January (30.3 days).
The month with the least rainy days is August (13.6 days).

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

Average daylight in September: 12h and 6min

The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 42min).

Average sunshine in September: 8h and 36min

The month with the most sunshine is February (Average sunshine: 9h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 24min).

Average sunshine days in September
Wonosari, Indonesia

Average sunshine days in September: 7.3 days

The month with the most sunshine days is August (12.3 days).
The month with the least sunshine days is March (0.5 days).

Average UV index in September
Wonosari, Indonesia

Average UV index in September: 6

The months with the highest UV index are February, March and October (UV index 7).
The months with the lowest UV index are January, April, May, June, July, August, September, November and December (UV index 6).

Average cloud cover in September
Wonosari, Indonesia

Average cloud cover in September: 42

The months with the most cloud cover are January and December (Cloud cover 50).
The months with the least cloud cover are June and August (Cloud cover 38).

Average visibility in September
Wonosari, Indonesia

Average visibility in September: 10km

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