May weather forecastHakodate, Japan
May
Weather in May
May embarks the early summer stage with the temperature ranging between 8.7°C (47.7°F) and 13.6°C (56.5°F), a recognizable leap from the cooler April. On an annual comparison, May holds the title for consecutive hours of sunshine, a testament to the stunning weather Hakodate experiences at this time of year. The increase in temperature, combined with the continuing high humidity levels, is indicative of the city's climate transition into the wet season. Notably, May offers a significant increase in sea temperatures, setting the stage for warmer months ahead. However, a stark contrast to the preceding month, May experiences more frequent rainfall days.Temperature
The onset of May in Hakodate brings a rise in the average high-temperature, elevating from a frosty 8.4°C (47.1°F) in April to a refreshing 13.6°C (56.5°F). Hakodate, during May nights, records a temperature marginally cooler than the daytime average, at a frosty 8.7°C (47.7°F).Humidity
In May, the average relative humidity is 82%.Rainfall
The month with the least rainfall is May, when the rain falls for 9.8 days and typically collects 12mm (0.47") of precipitation.Snowfall
May through October are months without snowfall.Sea temperature
In Hakodate, in May, the average water temperature is 9.4°C (48.9°F).Note: Dipping in 9.4°C (48.9°F) at temperatures less than 10°C (50°F) without proper gear can lead to pronounced cold shock and breathing difficulties.
Daylight
In May, the average length of the day is 14h and 32min.On the first day of the month, sunrise is at 04:33 and sunset at 18:35. On the last day of May, in Hakodate, sunrise is at 04:05 and sunset at 19:04 JST.
Sunshine
The month with the most sunshine is May, with an average of 8.8h of sunshine.UV index
In Hakodate, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In May, the average maximum UV index of 4 translates into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Hakodate, Japan
- Average high temperature in May: 13.6°C
The warmest month (with the highest average high temperature) is August (23.4°C).
The month with the lowest average high temperature is January (-0.1°C).
- Average low temperature in May: 8.7°C
The month with the highest average low temperature is August (19.6°C).
The coldest month (with the lowest average low temperature) is February (-3.5°C).
Average pressure in May
Hakodate, Japan
- Average pressure in May: 1010.8mbar
The month with the highest atmospheric pressure is November (1017mbar).
The month with the lowest atmospheric pressure is July (1008.8mbar).
Average wind speed in May
Hakodate, Japan
- Average wind speed in May: 14.8km/h
The windiest month (with the highest average wind speed) is December (24.3km/h).
The calmest month (with the lowest average wind speed) is July (12.2km/h).
Average humidity in May
Hakodate, Japan
- Average humidity in May: 82%
The month with the highest relative humidity is July (89%).
The month with the lowest relative humidity is October (73%).
Average rainfall in May
Hakodate, Japan
- Average rainfall in May: 12mm
The wettest month (with the highest rainfall) is August (25mm).
The driest month (with the least rainfall) is May (12mm).
Average rainfall days in May
Hakodate, Japan
- Average rainfall days in May: 9.8 days
The month with the highest number of rainy days is July (13 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in May
Hakodate, Japan
- Average snowfall in May: 0mm
The month with the highest snowfall is February (52mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in May
Hakodate, Japan
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in May
Hakodate, Japan
- Average sea temperature in May: 9.4°C
The best month for swimming (with the highest average sea temperature) is August (21.8°C).
The coldest month (with the lowest average sea temperature) is March (4.9°C).
Average daylight in May /
Average sunshine in May
Hakodate, Japan
- Average daylight in May: 14h and 30min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 48min
The month with the most sunshine is May (Average sunshine: 8h and 48min).
The months with the least sunshine are January and February (Average sunshine: 3h and 6min).
Average sunshine days in May
Hakodate, Japan
- Average sunshine days in May: 17.3 days
The months with the most sunshine days are May and October (17.3 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in May
Hakodate, Japan
- Average UV index in May: 4
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in May
Hakodate, Japan
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 69).
The months with the least cloud cover are September and October (Cloud cover 38).
Average visibility in May
Hakodate, Japan
- Average visibility in May: 9km
The months with the highest visibility are September and October (10km).
The month with the lowest visibility is July (8km).
