May
Weather in May
Temperature
The commencement of May sees a shift in the average high-temperature, moving from a refreshing 16.1°C (61°F) in April to a pleasant 21.3°C (70.3°F). An average nighttime temperature of 12.8°C (55°F) is observed during May.Humidity
The average relative humidity in May is 70.3%.Rainfall
In Incheon, during May, the rain falls for 8.7 days and regularly aggregates up to 100mm (3.94") of precipitation. In Incheon, during the entire year, the rain falls for 101.9 days and collects up to 1235mm (48.62") of precipitation.Sea temperature
In Incheon, the average seawater temperature in May is 13.3°C (55.9°F).Note: Immersing oneself in 13.3°C (55.9°F) at sub-10°C (14°F) temperatures is a recipe for harsh cold shock and quickened breathing unless adequately equipped.
Daylight
In Incheon, the average length of the day in May is 14h and 11min.On the first day of the month, sunrise is at 05:37 and sunset at 19:22. On the last day of May, sunrise is at 05:14 and sunset at 19:47 KST.
Sunshine
May has the most sunshine of the year in Incheon, South Korea, with an average of 7.5h of sunshine.Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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Average temperature in May
Incheon, South Korea
- Average high temperature in May: 21.3°C
The warmest month (with the highest average high temperature) is August (29°C).
The month with the lowest average high temperature is January (1.7°C).
- Average low temperature in May: 12.8°C
The month with the highest average low temperature is August (22.4°C).
The coldest month (with the lowest average low temperature) is January (-5.4°C).
Average humidity in May
Incheon, South Korea
- Average humidity in May: 70.3%
The month with the highest relative humidity is July (82.2%).
The month with the lowest relative humidity is January (61.5%).
Average rainfall in May
Incheon, South Korea
- Average rainfall in May: 100.3mm
The wettest month (with the highest rainfall) is July (319.6mm).
The driest month (with the least rainfall) is December (19.3mm).
Average rainfall days in May
Incheon, South Korea
- Average rainfall days in May: 8.7 days
The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is February (5.3 days).
Average sea temperature in May
Incheon, South Korea
- Average sea temperature in May: 13.3°C
The best month for swimming (with the highest average sea temperature) is August (23.4°C).
The coldest month (with the lowest average sea temperature) is February (3.3°C).
Average daylight in May /
Average sunshine in May
Incheon, South Korea
- Average daylight in May: 14h and 1min
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 36min).
- Average sunshine in May: 7h and 3min
The month with the most sunshine is May (Average sunshine: 7h and 30min).
The month with the least sunshine is July (Average sunshine: 5h and 6min).
