May weather forecast and climate
Tokyo, Japan

A stunning view of the cityscape of Tokyo, Japan, taken at dusk
A stunning view of the cityscape of Tokyo, Japan, taken at dusk
May, the last month of the spring, in Tokyo, is an agreeable month, with temperature in the range of an average high of 22.8°C (73°F) and an average low of 16.1°C (61°F).

Temperature

In Tokyo, the average high-temperature rises, from a comfortable 17.6°C (63.7°F) in April, to an agreeable 22.8°C (73°F). In Tokyo, the average low-temperature is 16.1°C (61°F).

Humidity

In Tokyo, the average relative humidity is 69%.

Rainfall

In Tokyo, it is raining for 10.3 days, with typically 31mm (1.22") of accumulated precipitation. Throughout the year, in Tokyo, Japan, there are 134.5 rainfall days, and 425mm (16.73") of precipitation is accumulated.

Snowfall

In Tokyo snow does not fall in April through December.

Sea temperature

In May, the average sea temperature is 17.8°C (64°F).
Note: Swimming in 17.8°C (64°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

In Tokyo, the average length of the day is 14.1h.

Sunshine

In Tokyo, the average sunshine in May is 9.5h.

UV index

In Tokyo, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 5 in May transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in May in Tokyo?

In Tokyo, Japan, in May, the average high-temperature is 22.8°C (73°F), and the average low-temperature is 16.1°C (61°F).

What is the average humidity in May in Tokyo?

In Tokyo, the average relative humidity in May is 69%.

How many days does it rain in May in Tokyo?

In May, in Tokyo, the rain falls for 10.3 days. Throughout May, 31mm (1.22") of precipitation is accumulated.

When it does not snow in Tokyo?

April through December are months without snowfall.

What is the sea temperature in May in Tokyo?

In Tokyo, in May, the average water temperature is 17.8°C (64°F). For swimming, a surface water temperature of 17.8°C (64°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

How many hours of daylight does Tokyo have in May?

In Tokyo, the average length of the day in May is 14.1h.

How many hours of sunshine does Tokyo have in May?

In May, the average sunshine in Tokyo, Japan, is 9.5h.

How high is the UV index in May in Tokyo?

The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.
Average temperature in May - Tokyo, Japan
  • Average high temperature in May: 22.8°C

The warmest month (with the highest average high temperature) is August (31°C).
The month with the lowest average high temperature is January (8.9°C).

  • Average low temperature in May: 16.1°C

The month with the highest average low temperature is August (25.1°C).
The coldest month (with the lowest average low temperature) is January (2.8°C).

Average pressure in May - Tokyo, Japan
  • Average pressure in May: 1012mbar

The month with the highest atmospheric pressure is November (1018.1mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).

Average wind speed in May - Tokyo, Japan
  • Average wind speed in May: 13.9km/h

The windiest month (with the highest average wind speed) is April (15.3km/h).
The calmest month (with the lowest average wind speed) is November (12.1km/h).

Average humidity in May - Tokyo, Japan
  • Average humidity in May: 69%

The month with the highest relative humidity is July (77%).
The month with the lowest relative humidity is January (59%).

Average rainfall in May - Tokyo, Japan
  • Average rainfall in May: 31mm

The wettest month (with the highest rainfall) is October (51mm).
The driest month (with the least rainfall) is December (21mm).

Average rainfall days in May - Tokyo, Japan
  • Average rainfall days in May: 10.3 days

The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is January (7.3 days).

Average snowfall in May - Tokyo, Japan
  • Average snowfall in May: 0mm

The month with the highest snowfall is February (21mm).
Months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in May - Tokyo, Japan
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (2.3 days).
Months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average sea temperature in May - Tokyo, Japan
  • Average sea temperature in May: 17.8°C

The best month for swimming (with the highest average sea temperature) is August (25.7°C).
The coldest month (with the lowest average sea temperature) is February (14°C).

Average daylight in May / Average sunshine in May - Tokyo, Japan
  • Average daylight in May: 14.1h

The month with the longest days is June (Average daylight: 14.5h).
The month with the shortest days is December (Average daylight: 9.8h).

  • Average sunshine in May: 9.5h

The month with the most sunshine is August (Average sunshine: 10.3h).
The month with the least sunshine is February (Average sunshine: 5.8h).

Average sunshine days in May - Tokyo, Japan
  • Average sunshine days in May: 18.8 days

The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is June (14.4 days).

Average UV index in May - Tokyo, Japan
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 7).
Months with the lowest UV index are January, February, March, November and December (UV index 3).

Average cloud cover in May - Tokyo, Japan
  • Average cloud cover in May: 35

Months with the most cloud cover are June and October (Cloud cover 43).
The month with the least cloud cover is January (Cloud cover 28).

Average visibility in May - Tokyo, Japan
  • Average visibility in May: 10km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).