May weather forecast
Japan, PA

Share

Weather in May

May, the last month of the spring in Japan, is a refreshing month, with an average temperature ranging between max 66.7°F (19.3°C) and min 48.4°F (9.1°C).

Temperature

As April transitions into May, a change in temperatures is observed, with average highs moving from a cool 55°F (12.8°C) to a comfortable 66.7°F (19.3°C). May nights in Japan cool down to an average low-temperature of 48.4°F (9.1°C).

Humidity

In Japan, Pennsylvania, the average relative humidity in May is 81%.

Rainfall

May is the month with the most rainfall. Rain falls for 19.4 days and accumulates 3.5" (89mm) of precipitation.

Snowfall

Months with snowfall in Japan are January through May, October through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Japan aggregates 0.87" (22mm) of snow. In Japan, during the entire year, snow falls for 60.9 days and aggregates up to 38.9" (988mm) of snow.

Daylight

In Japan, the average length of the day in May is 14h and 29min.
On the first day of May in Japan, sunrise is at 6:00 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 8:29 pm EDT.

Sunshine

In Japan, the average sunshine in May is 7.6h.

UV index

May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
[Resources]

Frequently asked questions

What is the usual temperature for Japan in May?

In Japan, in May, the average high-temperature is 66.7°F (19.3°C), and the average low-temperature is 48.4°F (9.1°C).

What is the average humidity in May in Japan?

In Japan, Pennsylvania, the average relative humidity in May is 81%.

What is the rainiest month in Japan?

The month with the most rainfall in Japan is May, when the rain falls for 19.4 days and typically aggregates up to 3.5" (89mm) of precipitation.

How many days does it rain in May in Japan?

In Japan, Pennsylvania, in May, during 19.4 rainfall days, 3.5" (89mm) of precipitation is typically accumulated.

What is the last month it snows in Japan?

May is the last month it regularly snows in Japan, Pennsylvania. During 0.3 snowfall days, in May, Japan aggregates 0.87" (22mm) of snow.

What is the average length of the day in May in Japan?

In May, the average day length in Japan, Pennsylvania, is 14h and 29min.

When is the sunrise / sunset in May in Japan?

On the first day of May in Japan, Pennsylvania, sunrise is at 6:00 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 8:29 pm EDT.

How many hours of sunshine does Japan have in May?

In Japan, Pennsylvania, the average sunshine duration in May is 7.6h.

What is the month with the highest UV index in Japan?

May through August, with an average maximum UV index of 5, are months with the highest UV index in Japan.

What is the UV index reading in May in Japan?

The average daily maximum UV index in May in Japan is 5. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Japan, PA

Average temperature in May - Japan, PA
  • Average high temperature in May: 66.7°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in May: 48.4°F

The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).

[Resources]

Average pressure in May
Japan, PA

Average pressure in May - Japan, PA
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

[Resources]

Average wind speed in May
Japan, PA

Average wind speed in May - Japan, PA
  • Average wind speed in May: 6.6mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

[Resources]

Average humidity in May
Japan, PA

Average humidity in May - Japan, PA
  • Average humidity in May: 81%

The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is April (78%).

[Resources]

Average rainfall in May
Japan, PA

Average rainfall in May - Japan, PA
  • Average rainfall in May: 3.5"

The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is September (2.13").

[Resources]

Average rainfall days in May
Japan, PA

Average rainfall days in May - Japan, PA
  • Average rainfall days in May: 19.4 days

The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is January (7 days).

[Resources]

Average snowfall in May
Japan, PA

Average snowfall in May - Japan, PA
  • Average snowfall in May: 0.87"

The month with the highest snowfall is February (8.62").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in May
Japan, PA

Average snowfall days in May - Japan, PA
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

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

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

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in May: 7h and 4min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).

[Resources]

Average sunshine days in May
Japan, PA

Average sunshine days in May - Japan, PA
  • Average sunshine days in May: 9.2 days

The month with the most sunshine days is November (15.6 days).
The month with the least sunshine days is May (9.2 days).

[Resources]

Average UV index in May
Japan, PA

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

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

[Resources]

Average cloud cover in May
Japan, PA

Average cloud cover in May - Japan, PA
  • Average cloud cover in May: 53

The months with the most cloud cover are February and December (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 38).

[Resources]

Average visibility in May
Japan, PA

Average visibility in May - Japan, PA
  • Average visibility in May: 5mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).

[Resources]

Japan, Pennsylvania, USA

Weather forecast for your location

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