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September Weather in Kosan, North Korea

Last updated: August 23, 2025

In September, the average temperature in Kosan, North Korea hovers around 17°C (63°F), with minimums plummeting to 3°C (38°F) and occasional highs reaching up to 29°C (84°F). This month also sees an average precipitation of 155 mm (6.1 in) over approximately 9 days, complemented by a notable average humidity of 77%. Whether you’re exploring the outdoors or cozying up inside, be prepared for a mix of weather!

September Temperature in Kosan

In September in Kosan, the average temperature is 17°C (63°F). Maximum temperatures can reach 29°C (84°F), while minimums can drop as low as 3°C (38°F). Be sure to pack layers to enjoy the pleasant days and cool nights during your travels.

September Weather in Kosan: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Kosan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kosan, September typically has an average temperature of 17°C (63°F), with highs reaching up to 29°C (84°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec192538485866727263503824
Data source: Temperature data for Kosan generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Kosan

In Kosan in September, the precipitation amount is 155 mm (6.1 in) over the course of 9 days.

September Precipitation Trends in Kosan

The chart displays monthly precipitation patterns in Kosan, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Kosan, September typically receives around 155 mm (6.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec24266075114105217282155764821
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Kosan

In Kosan in September, humidity is 77%. With an average temperature of 17°C (63°F), this humidity feels like a cozy blanket wrapped around you, creating a muggy atmosphere that can be a bit uncomfortable for traveling, making you want to seek shade and hydration as you explore.

September Average Humidity in Kosan

This chart illustrates the average monthly humidity levels in Kosan, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Kosan is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%62%60%67%76%83%88%90%77%80%76%69%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kosan

In Kosan in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Kosan.

Maximum UV Index Levels in Kosan for September

The chart shows the monthly maximum UV Index (UVI) for Kosan in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Kosan typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346891111119643
Data source: Kosan September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Kosan Compares to Other Months

Weather in Kosan varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kosan, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Kosan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (20°F)24 mm (0.9 inches)65%moderate
February Weather-4°C (25°F)26 mm (1.0 inches)61%moderate
March Weather3°C (38°F)60 mm (2.3 inches)60%high
April Weather9°C (48°F)75 mm (2.9 inches)67%very high
May Weather14°C (58°F)114 mm (4.5 inches)76%very high
June Weather19°C (66°F)105 mm (4.1 inches)83%extreme
July Weather22°C (72°F)217 mm (8.5 inches)88%extreme
August Weather22°C (73°F)282 mm (11.1 inches)90%extreme
September Weather17°C (63°F)155 mm (6.1 inches)77%very high
October Weather10°C (51°F)75 mm (3.0 inches)80%high
November Weather3°C (38°F)48 mm (1.9 inches)76%moderate
December Weather-4°C (24°F)21 mm (0.8 inches)69%moderate

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