September weather forecast
Suwon, South Korea

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Weather in September

As Suwon enters September, there is a noticeable drop in both temperatures and rainfall from the high levels experienced over the summer. A shift in the weather marks the onset of autumn, with its warmer hues and mellow sunshine. With a decrease in humidity levels, outdoor activities become more enjoyable and comforting. The rainfall frequency begins to taper off near the end of the month, unveiling the city’s landscapes in their full autumnal glory.

Temperature

With the onset of September, the average high-temperature subtly recedes from August's moderately hot 29.8°C (85.6°F) to a still warm 25.9°C (78.6°F). During September, Suwon's temperature falls to a steady low-temperature average of 16.4°C (61.5°F).

Humidity

In Suwon, South Korea, the average relative humidity in September is 74.5%.

Rainfall

In Suwon, during September, the rain falls for 8.7 days and regularly aggregates up to 154mm (6.06") of precipitation. Throughout the year, there are 108.2 rainfall days, and 1312mm (51.65") of precipitation is accumulated.

Daylight

In Suwon, the average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 06:02 and sunset at 19:01. On the last day of September, sunrise is at 06:26 and sunset at 18:17 KST.

Sunshine

In September, the average sunshine in Suwon is 6.1h.
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Frequently asked questions

What is the temperature in September in Suwon?

An average high-temperature, in September, in Suwon, is 25.9°C (78.6°F) and the average low-temperature is 16.4°C (61.5°F). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 37°C (98.6°F).

What is the average humidity in September in Suwon?

The average relative humidity in September in Suwon is 74.5%.

How many days does it rain in September in Suwon?

In Suwon, during September, the rain falls for 8.7 days and regularly aggregates up to 154mm (6.06") of precipitation.

How many hours of daylight does Suwon have in September?

In September, the average day length in Suwon is 12h and 26min.

When is the sunrise / sunset in September in Suwon?

In September, on the first day of the month, sunrise is at 06:02 and sunset at 19:01. On the last day of the month, sunrise is at 06:26 and sunset at 18:17 KST.

How many hours of sunshine does Suwon have in September?

In Suwon, the average sunshine duration in September is 6.1h.

Average temperature in September
Suwon, South Korea

Average temperature in September - Suwon, South Korea
  • Average high temperature in September: 25.9°C

The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (2.1°C).

  • Average low temperature in September: 16.4°C

The month with the highest average low temperature is August (22.1°C).
The coldest month (with the lowest average low temperature) is January (-7.4°C).

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Average humidity in September
Suwon, South Korea

Average humidity in September - Suwon, South Korea
  • Average humidity in September: 74.5%

The month with the highest relative humidity is July (80.1%).
The month with the lowest relative humidity is April (62.5%).

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Average rainfall in September
Suwon, South Korea

Average rainfall in September - Suwon, South Korea
  • Average rainfall in September: 153.9mm

The wettest month (with the highest rainfall) is July (351.1mm).
The driest month (with the least rainfall) is December (21.8mm).

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Average rainfall days in September
Suwon, South Korea

Average rainfall days in September - Suwon, South Korea
  • Average rainfall days in September: 8.7 days

The month with the highest number of rainy days is July (15.4 days).
The months with the least rainy days are February and October (6.2 days).

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Average daylight in September /
Average sunshine in September
Suwon, South Korea

Average daylight in September / Average sunshine in September - Suwon, South Korea
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in September: 6h and 1min

The month with the most sunshine is April (Average sunshine: 7h and 12min).
The month with the least sunshine is July (Average sunshine: 4h and 24min).

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Suwon, South Korea

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