Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
The transition into September subtly indicates a reduction in the average high-temperature, down to a still warm 23.8°C (74.8°F) from August's 28°C (82.4°F). Haeju throughout September, experiences an average nighttime temperature of 16.1°C (61°F).Humidity
In September, the average relative humidity in Haeju is 75%.Rainfall
In Haeju, in September, it is raining for 8.3 days, with typically 65mm (2.56") of accumulated precipitation. Throughout the year, there are 101.6 rainfall days, and 591mm (23.27") of precipitation is accumulated.Snowfall
In Haeju, snow does not fall in May through October.Sea temperature
In September, the average sea temperature is 21.7°C (71.1°F).Note: Swimming in water of 21.7°C (71.1°F) is not enjoyable for the majority of individuals. Breathing control becomes increasingly challenging as the temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 06:07 and sunset at 19:07. On the last day of September, sunrise is at 06:32 and sunset at 18:22 KST.
Sunshine
In Haeju, the average sunshine in September is 9.7h.UV index
In Haeju, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: A maximum UV index of 5 in September translates into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Take heed! Reflections of sand and water make the Sun's UV rays stronger.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the sea temperature in September in Haeju?
How many hours of daylight does Haeju have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Haeju have in September?
What is the UV index reading in September?
Average temperature in September
Haeju, North Korea
- Average high temperature in September: 23.8°C
The warmest month (with the highest average high temperature) is August (28°C).
The month with the lowest average high temperature is January (-0.3°C).
- Average low temperature in September: 16.1°C
The month with the highest average low temperature is August (21°C).
The coldest month (with the lowest average low temperature) is January (-5.9°C).
Average pressure in September
Haeju, North Korea
- Average pressure in September: 1014mbar
The month with the highest atmospheric pressure is January (1025.6mbar).
The month with the lowest atmospheric pressure is July (1006.5mbar).
Average wind speed in September
Haeju, North Korea
- Average wind speed in September: 8.7km/h
The windiest month (with the highest average wind speed) is March (14km/h).
The calmest month (with the lowest average wind speed) is September (8.7km/h).
Average humidity in September
Haeju, North Korea
- Average humidity in September: 75%
The month with the highest relative humidity is July (85%).
The months with the lowest relative humidity are March and April (58%).
Average rainfall in September
Haeju, North Korea
- Average rainfall in September: 65mm
The wettest month (with the highest rainfall) is July (144mm).
The driest month (with the least rainfall) is January (10mm).
Average rainfall days in September
Haeju, North Korea
- Average rainfall days in September: 8.3 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (2.4 days).
Average snowfall in September
Haeju, North Korea
- Average snowfall in September: 0mm
The month with the highest snowfall is December (27mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Haeju, North Korea
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (5.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Haeju, North Korea
- Average sea temperature in September: 21.7°C
The best month for swimming (with the highest average sea temperature) is August (22.9°C).
The coldest month (with the lowest average sea temperature) is February (2.3°C).
Average daylight in September /
Average sunshine in September
Haeju, North Korea
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The months with the least sunshine are November and December (Average sunshine: 5h and 30min).
Average sunshine days in September
Haeju, North Korea
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is August (10.2 days).
Average UV index in September
Haeju, North Korea
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Haeju, North Korea
- Average cloud cover in September: 29
The month with the most cloud cover is July (Cloud cover 52).
The month with the least cloud cover is October (Cloud cover 23).
Average visibility in September
Haeju, North Korea
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, October, November and December (10km).
The month with the lowest visibility is July (8km).
