May weather forecast and climate
Rockaway, NJ

May, the last month of the spring, in Rockaway, is a pleasant month, with average temperature varying between 68.5°F (20.3°C) and 50.5°F (10.3°C).

Temperature

In May, the average high-temperature increases, from a moderate 57.9°F (14.4°C) in April, to a pleasant 68.5°F (20.3°C). In May, in Rockaway, the average low-temperature is 50.5°F (10.3°C).

Humidity

The average relative humidity in Rockaway is 79%.

Rainfall

In May, in Rockaway, the rain falls for 8.9 days. Throughout May, 0.67" (17mm) of precipitation is accumulated. Throughout the year, there are 81.9 rainfall days, and 6.69" (170mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Rockaway, New Jersey. May is the last month it regularly snows. During 0.2 snowfall days, Rockaway aggregates 0.16" (4mm) of snow. In Rockaway, during the entire year, snow falls for 18.1 days, and aggregates up to 2.68" (68mm) of snow.

Ocean temperature

In Rockaway, the average seawater temperature in May is 51.4°F (10.8°C).
Note: Swimming in 51.4°F (10.8°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

The average length of the day in May is 14.5h.

Sunshine

In Rockaway, the average sunshine in May is 8.2h.

UV index

In May, the average daily maximum UV index in Rockaway is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to the Sun's UV rays for the ordinary 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. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in May in Rockaway?

In Rockaway, in May, the average high-temperature is 68.5°F (20.3°C), and the average low-temperature is 50.5°F (10.3°C).

What is the average humidity in May in Rockaway?

In May, the average relative humidity in Rockaway, New Jersey, is 79%.

How many days does it rain in May in Rockaway?

In Rockaway, during May, the rain falls for 8.9 days and regularly aggregates up to 0.67" (17mm) of precipitation.

What is the last month it snows in Rockaway?

May is the last month it regularly snows in Rockaway, New Jersey. During 0.2 snowfall days, in May, Rockaway aggregates 0.16" (4mm) of snow.

What is the water temperature in May in Rockaway?

In Rockaway, the average seawater temperature in May is 51.4°F (10.8°C). Swimming in 51.4°F (10.8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Rockaway have in May?

In May, the average length of the day in Rockaway, New Jersey, is 14.5h.

How long on average sun shines in May in Rockaway?

The average sunshine in May is 8.2h.

What is the UV index reading in May in Rockaway?

The average daily maximum UV index in May in Rockaway is 5. A UV Index of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV radiation.
Average temperature in May - Rockaway, NJ
  • Average high temperature in May: 20.3°C

The warmest month (with the highest average high temperature) is July (28.3°C).
The month with the lowest average high temperature is January (1.3°C).

  • Average low temperature in May: 10.3°C

The month with the highest average low temperature is July (17.8°C).
The coldest month (with the lowest average low temperature) is January (-6.2°C).

Average pressure in May - Rockaway, NJ
  • Average pressure in May: 1016.3mbar

The month with the highest atmospheric pressure is November (1019.6mbar).
The month with the lowest atmospheric pressure is June (1013.7mbar).

Average wind speed in May - Rockaway, NJ
  • Average wind speed in May: 10.2km/h

The windiest month (with the highest average wind speed) is March (13.2km/h).
The calmest month (with the lowest average wind speed) is August (8.2km/h).

Average humidity in May - Rockaway, NJ
  • Average humidity in May: 79%

Months with the highest relative humidity are February, October and December (81%).
The month with the lowest relative humidity is April (75%).

Average rainfall in May - Rockaway, NJ
  • Average rainfall in May: 17mm

The wettest month (with the highest rainfall) is July (20mm).
The driest month (with the least rainfall) is September (4mm).

Average rainfall days in May - Rockaway, NJ
  • Average rainfall days in May: 8.9 days

The month with the highest number of rainy days is July (9.5 days).
The month with the least rainy days is February (4 days).

Average snowfall in May - Rockaway, NJ
  • Average snowfall in May: 4mm

The month with the highest snowfall is March (20mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in May - Rockaway, NJ
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is February (5.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in May - Rockaway, NJ
  • Average sea temperature in May: 10.8°C

The best month for swimming (with the highest average sea temperature) is August (23.5°C).
The coldest month (with the lowest average sea temperature) is February (4°C).

Average daylight in May / Average sunshine in May - Rockaway, NJ
  • Average daylight in May: 14.5h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in May: 8.2h

The month with the most sunshine is July (Average sunshine: 10.2h).
The month with the least sunshine is February (Average sunshine: 4.4h).

Average sunshine days in May - Rockaway, NJ
  • Average sunshine days in May: 19 days

The month with the most sunshine days is November (24.5 days).
The month with the least sunshine days is July (18.3 days).

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

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

Average cloud cover in May - Rockaway, NJ
  • Average cloud cover in May: 50

Months with the most cloud cover are February and March (Cloud cover 51).
Months with the least cloud cover are July and August (Cloud cover 36).

Average visibility in May - Rockaway, NJ
  • Average visibility in May: 8km

Months with the highest visibility are January, March, April, November and December (9km).
Months with the lowest visibility are February, May, June, July, August, September and October (8km).