May weather forecast
Hakodate, Japan

Today
Tomorrow
Long-term
YearJFMAMayJJASOND
°Celsius°Fahrenheit
englishespañol中文
Share

Contents

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.
[Resources]

Frequently asked questions

What are the temperatures in Hakodate in May?

The high-temperature, in May, in Hakodate, records 13.6°C (56.5°F), while the low-temperature is 8.7°C (47.7°F).

What is the average humidity in May in Hakodate?

In Hakodate, the average relative humidity in May is 82%.

What is the driest month in Hakodate?

May is the month with the least rainfall. Rain falls for 9.8 days and accumulates 12mm (0.47") of precipitation.

How much does it rain in Hakodate in May?

In Hakodate, during May, the rain falls for 9.8 days and regularly aggregates up to 12mm (0.47") of precipitation.

When it does not snow in Hakodate?

In Hakodate, Japan, snow does not fall in May through October.

Does it snow in Hakodate in May?

In May, in Hakodate, Japan, it doesn't snow. April is the latest month when it typically snows.

What is the water temperature in May in Hakodate?

In Hakodate, Japan, in May, the average water temperature is 9.4°C (48.9°F). Swimming in 9.4°C (48.9°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

How many hours of daylight does Hakodate have in May?

In May, the average day length in Hakodate, Japan, is 14h and 32min.

What time are sunrise and sunset in May in Hakodate?

In May, on the first day of the month, sunrise is at 04:33 and sunset at 18:35. On the last day of the month, sunrise is at 04:05 and sunset at 19:04 JST.

What month has the most sunshine in Hakodate?

The month with the most sunshine is May, with an average of 8.8h of sunshine.

How many hours of sunshine does Hakodate have in May?

In Hakodate, Japan, the average sunshine duration in May is 8.8h.

What is the UV index intensity in May in Hakodate?

In May, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMayJJASOND
Apr
May
Jun
Average high temperature
8.4°C 47.1°F
13.6°C 56.5°F
17.4°C 63.3°F
Average low temperature
4.1°C 39.4°F
8.7°C 47.7°F
12.9°C 55.2°F
Average pressure
1013.1mbar 29.92inHg
1010.8mbar 29.85inHg
1009mbar 29.8inHg
Average wind speed
17.8km/h 11.1mph
14.8km/h 9.2mph
12.3km/h 7.6mph
Average max. wind speed
19.1km/h 11.9mph
16km/h 9.9mph
13.4km/h 8.3mph
Average wind speed gusts
28km/h 17.4mph
24.5km/h 15.2mph
19.9km/h 12.4mph
Average humidity
76%
82%
86%
Average rainfall
15mm 0.59"
12mm 0.47"
17mm 0.67"
Average rainfall days
10.8
9.8
10.3
Average snowfall
7mm 0.28"
0mm 0"
0mm 0"
Average snowfall days
2.2
0
0
Average sea temperature
7°C 44.6°F
9.4°C 48.9°F
14.7°C 58.5°F
Average daylight
13h 2min
14h 3min
15h 1min
Average sunshine
8h 4min
8h 5min
7h 5min
Average sunshine days
16.3
17.3
15.9
Average UV index
3
4
5
Average cloud cover
42%
43%
50%
Average visibility
9km 5.6mi
9km 5.6mi
9km 5.6mi

Average temperature in May
Hakodate, Japan

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).

[Resources]

Average pressure in May
Hakodate, Japan

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).

[Resources]

Average wind speed in May
Hakodate, Japan

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).

[Resources]

Average humidity in May
Hakodate, Japan

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%).

[Resources]

Average rainfall in May
Hakodate, Japan

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).

[Resources]

Average rainfall days in May
Hakodate, Japan

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).

[Resources]

Average snowfall in May
Hakodate, Japan

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).

[Resources]

Average snowfall days in May
Hakodate, Japan

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).

[Resources]

Average sea temperature in May
Hakodate, Japan

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).

[Resources]

Average daylight in May /
Average sunshine in May
Hakodate, Japan

Average daylight in May / Average sunshine in May - Hakodate, Japan
  • Average daylight in May: 14h and 3min

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 5min

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).

[Resources]

Average sunshine days in May
Hakodate, Japan

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).

[Resources]

Average UV index in May
Hakodate, Japan

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).

[Resources]

Average cloud cover in May
Hakodate, Japan

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).

[Resources]

Average visibility in May
Hakodate, Japan

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).

[Resources]

Hakodate, Japan

Weather forecast for today
Weather forecast for tomorrow
10 days weather forecast
Climate data
1January
2February
3March
4April
5May
6June
7July
8August
9September
10October
11November
12December

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location