May weather forecast and climate
Holmdel, NJ

May, the last month of the spring, in Holmdel, is a comfortable month, with temperature in the range of an average low of 54.5°F (12.5°C) and an average high of 66.4°F (19.1°C).

Temperature

In May, the average high-temperature rises, from a mild 57°F (13.9°C) in April, to an enjoyable 66.4°F (19.1°C). In Holmdel, the average low-temperature is 54.5°F (12.5°C).

Humidity

May and June, with an average relative humidity of 78%, are most humid months in Holmdel.

Rainfall

In Holmdel, New Jersey, during May, the rain falls for 5.9 days and regularly aggregates up to 0.59" (15mm) of precipitation. Throughout the year, in Holmdel, there are 68.3 rainfall days, and 5.75" (146mm) of precipitation is accumulated.

Snowfall

April through November are months without snowfall.

Daylight

The average length of the day in May is 14.4h.

Sunshine

The average sunshine in May is 8.9h.

UV index

In Holmdel, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in May in Holmdel?

The average high-temperature, in May, is 66.4°F (19.1°C), while the average low-temperature is 54.5°F (12.5°C).

What are the most humid months in Holmdel?

May and June, with an average relative humidity of 78%, are most humid months in Holmdel.

What is the average humidity in May in Holmdel?

In Holmdel, New Jersey, the average relative humidity in May is 78%.

How many days does it rain in May in Holmdel?

In Holmdel, New Jersey, in May, it is raining for 5.9 days, with typically 0.59" (15mm) of accumulated precipitation.

When it does not snow in Holmdel?

April through November are months without snowfall.

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

In May, the average length of the day is 14.4h.

How long on average sun shines in May in Holmdel?

The average sunshine in May is 8.9h.

How high is the UV index in May in Holmdel?

The average daily maximum UV index in May in Holmdel, New Jersey, is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in May - Holmdel, NJ
  • Average high temperature in May: 19.1°C

The warmest month (with the highest average high temperature) is July (27.6°C).
The month with the lowest average high temperature is January (3.2°C).

  • Average low temperature in May: 12.5°C

The month with the highest average low temperature is July (21°C).
The coldest month (with the lowest average low temperature) is January (-2.6°C).

Average pressure in May - Holmdel, NJ
  • Average pressure in May: 1016.4mbar

The month with the highest atmospheric pressure is November (1019.5mbar).
The month with the lowest atmospheric pressure is June (1013.7mbar).

Average wind speed in May - Holmdel, NJ
  • Average wind speed in May: 13.6km/h

The windiest month (with the highest average wind speed) is January (17.9km/h).
The calmest month (with the lowest average wind speed) is July (11.5km/h).

Average humidity in May - Holmdel, NJ
  • Average humidity in May: 78%

Months with the highest relative humidity are May and June (78%).
The month with the lowest relative humidity is November (73%).

Average rainfall in May - Holmdel, NJ
  • Average rainfall in May: 15mm

The wettest month (with the highest rainfall) is July (18mm).
The driest month (with the least rainfall) is September (3mm).

Average rainfall days in May - Holmdel, NJ
  • Average rainfall days in May: 5.9 days

The month with the highest number of rainy days is July (8 days).
The month with the least rainy days is January (3.4 days).

Average snowfall in May - Holmdel, NJ
  • Average snowfall in May: 0mm

The month with the highest snowfall is January (4mm).
Months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

Average snowfall days in May - Holmdel, NJ
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (2.6 days).
Months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in May / Average sunshine in May - Holmdel, NJ
  • Average daylight in May: 14.4h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in May: 8.9h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is February (Average sunshine: 4.9h).

Average sunshine days in May - Holmdel, NJ
  • Average sunshine days in May: 21 days

The month with the most sunshine days is January (25.7 days).
The month with the least sunshine days is July (17.3 days).

Average UV index in May - Holmdel, NJ
  • Average UV index in May: 5

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in May - Holmdel, NJ
  • Average cloud cover in May: 42

Months with the most cloud cover are February, March and December (Cloud cover 46).
Months with the least cloud cover are July and August (Cloud cover 28).

Average visibility in May - Holmdel, NJ
  • Average visibility in May: 9km

Months with the highest visibility are January, February, March, April, July, August, September, October, November and December (10km).
Months with the lowest visibility are May and June (9km).