Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average sea temperature in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May's arrival brings a change in high-temperatures, moving from a moderate 14.8°C (58.6°F) in April to a pleasant 20.8°C (69.4°F). In Haeju, an average low-temperature of 12°C (53.6°F) is recorded during May nights.Humidity
In May, the average relative humidity is 65%.Rainfall
In May, the rain falls for 8.6 days. Throughout May, 46mm (1.81") of precipitation is accumulated. Throughout the year, there are 101.6 rainfall days, and 591mm (23.27") of precipitation is accumulated.Snowfall
May through October are months without snowfall.Sea temperature
In Haeju, the average seawater temperature in May is 12.1°C (53.8°F).Note: It is risky to swim in 12.1°C (53.8°F). Temperatures beneath 10°C (50°F) induce rapid cold shock and hyperventilation.
Daylight
The average length of the day in May is 14h and 14min.On the first day of May, sunrise is at 05:40 and sunset at 19:27. On the last day of the month, sunrise is at 05:16 and sunset at 19:53 KST.
Sunshine
In Haeju, the average sunshine in May is 9.9h.UV index
In Haeju, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index, 5 during May, leads to the following recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Experience reduced UV exposure by about half when donning a wide-brim hat.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
How much does it rain in May?
When it does not snow?
Does it snow in May?
How cold is the water in May?
How many hours of daylight does Haeju have in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
What is the UV index intensity in May?
Average temperature in May
Haeju, North Korea
- Average high temperature in May: 20.8°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 May: 12°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 May
Haeju, North Korea
- Average pressure in May: 1011.2mbar
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 May
Haeju, North Korea
- Average wind speed in May: 11.5km/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 May
Haeju, North Korea
- Average humidity in May: 65%
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 May
Haeju, North Korea
- Average rainfall in May: 46mm
The wettest month (with the highest rainfall) is July (144mm).
The driest month (with the least rainfall) is January (10mm).
Average rainfall days in May
Haeju, North Korea
- Average rainfall days in May: 8.6 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 May
Haeju, North Korea
- Average snowfall in May: 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 May
Haeju, North Korea
- Average snowfall days in May: 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 May
Haeju, North Korea
- Average sea temperature in May: 12.1°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 May /
Average sunshine in May
Haeju, North Korea
- Average daylight in May: 14h and 1min
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 May: 9h and 5min
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 May
Haeju, North Korea
- Average sunshine days in May: 21.2 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 May
Haeju, North Korea
- Average UV index in May: 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 May
Haeju, North Korea
- Average cloud cover in May: 30
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 May
Haeju, North Korea
- Average visibility in May: 10km
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).
Haeju, North Korea
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