May weather forecast
Port Washington, NY

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Weather in May

The last month of the spring, May, is an enjoyable month in Port Washington, New York, with temperature in the range of an average high of 66.2°F (19°C) and an average low of 53.6°F (12°C).

Temperature

May indicates a change in the average high-temperature, moving up from a refreshing 56.1°F (13.4°C) in April to an enjoyable 66.2°F (19°C). May sees the temperature falling to a mean low of 53.6°F (12°C).

Humidity

The months with the highest humidity are February, May and December, with an average relative humidity of 75%.

Rainfall

In May, the rain falls for 17.2 days. Throughout May, 2.99" (76mm) of precipitation is accumulated. In Port Washington, during the entire year, the rain falls for 168.7 days and collects up to 36.69" (932mm) of precipitation.

Snowfall

In Port Washington, New York, snow does not fall in May through October.

Ocean temperature

In May, the average ocean temperature is 54.1°F (12.3°C).
Note: It is risky to swim in 54.1°F (12.3°C). Temperatures beneath 50°F (10°C) induce rapid cold shock and hyperventilation.

Daylight

In Port Washington, New York, the average length of the day in May is 14h and 29min.
On the first day of the month, sunrise is at 5:52 am and sunset at 7:51 pm. On the last day of May, in Port Washington, New York, sunrise is at 5:25 am and sunset at 8:19 pm EDT.

Sunshine

In Port Washington, New York, the average sunshine in May is 8.8h.

UV index

In May, the average daily maximum UV index in Port Washington, New York, is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The UV index of 5 during May translates into the following guidance:
Take necessary precautions - Suggestions to elude sunburn are provided. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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Frequently asked questions

What is the usual temperature for Port Washington in May?

In Port Washington, 66.2°F (19°C) is the average high-temperature and 53.6°F (12°C) is the average low-temperature during May.

What is the most humid month in Port Washington?

February, May and December, with an average relative humidity of 75%, are most humid months in Port Washington.

What is the average humidity in May in Port Washington?

In Port Washington, the average relative humidity in May is 75%.

How many days does it rain in May in Port Washington?

In Port Washington, New York, during May, the rain falls for 17.2 days and regularly aggregates up to 2.99" (76mm) of precipitation.

When it does not snow in Port Washington?

May through October are months without snowfall.

Does it snow in Port Washington in May?

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

How cold is the water in May in Port Washington?

In Port Washington, New York, the average seawater temperature in May is 54.1°F (12.3°C). Swimming in 54.1°F (12.3°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in May in Port Washington?

In Port Washington, New York, the average day length in May is 14h and 29min.

When are sunrise and sunset in May in Port Washington?

On the first day of May in Port Washington, New York, sunrise is at 5:52 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:25 am and sunset at 8:19 pm EDT.

How long on average sun shines in May in Port Washington?

The average sunshine duration in May in Port Washington is 8.8h.

How high is the UV index in May in Port Washington?

The average daily maximum UV index in May in Port Washington is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJFMAMayJJASOND
Apr
May
Jun
Average high temperature
56.1°F 13.4°C
66.2°F 19°C
75.4°F 24.1°C
Average low temperature
44.2°F 6.8°C
53.6°F 12°C
62.6°F 17°C
Average pressure
29.98" 761mmHg
30.01" 762mmHg
29.93" 760mmHg
Average wind speed
9.4mph 15.1km/h
7.8mph 12.6km/h
7.3mph 11.7km/h
Average max. wind speed
10.1mph 16.3km/h
8.5mph 13.7km/h
7.9mph 12.7km/h
Average wind speed gusts
14.7mph 23.7km/h
12.5mph 20.1km/h
11.4mph 18.3km/h
Average humidity
71%
75%
74%
Average rainfall
2.99" 76mm
2.99" 76mm
3.15" 80mm
Average rainfall days
15.8
17.2
17.1
Average snowfall
0.08" 2mm
0" 0mm
0" 0mm
Average snowfall days
0.3
0
0
Average sea temperature
46°F 7.8°C
54.1°F 12.3°C
64.9°F 18.3°C
Average daylight
13h 2min
14h 3min
15h 1min
Average sunshine
8h 2min
8h 5min
9h 5min
Average sunshine days
12.3
12.3
11.1
Average UV index
4
5
6
Average cloud cover
44%
43%
35%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in May
Port Washington, NY

Average temperature in May - Port Washington, NY
  • Average high temperature in May: 66.2°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (36.5°F).

  • Average low temperature in May: 53.6°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).

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Average pressure in May
Port Washington, NY

Average pressure in May - Port Washington, NY
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in May
Port Washington, NY

Average wind speed in May - Port Washington, NY
  • Average wind speed in May: 7.8mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).

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Average humidity in May
Port Washington, NY

Average humidity in May - Port Washington, NY
  • Average humidity in May: 75%

The months with the highest relative humidity are February, May and December (75%).
The month with the lowest relative humidity is August (70%).

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Average rainfall in May
Port Washington, NY

Average rainfall in May - Port Washington, NY
  • Average rainfall in May: 2.99"

The wettest month (with the highest rainfall) is December (3.98").
The driest month (with the least rainfall) is February (2.36").

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Average rainfall days in May
Port Washington, NY

Average rainfall days in May - Port Washington, NY
  • Average rainfall days in May: 17.2 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (9.2 days).

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Average snowfall in May
Port Washington, NY

Average snowfall in May - Port Washington, NY
  • Average snowfall in May: 0"

The month with the highest snowfall is March (2.32").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Port Washington, NY

Average snowfall days in May - Port Washington, NY
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (7.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in May
Port Washington, NY

Average sea temperature in May - Port Washington, NY
  • Average sea temperature in May: 54.1°F

The best month for swimming (with the highest average sea temperature) is August (74.1°F).
The coldest month (with the lowest average sea temperature) is February (39.9°F).

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Average daylight in May /
Average sunshine in May
Port Washington, NY

Average daylight in May / Average sunshine in May - Port Washington, NY
  • 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: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in May
Port Washington, NY

Average sunshine days in May - Port Washington, NY
  • Average sunshine days in May: 12.3 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (11.1 days).

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Average UV index in May
Port Washington, NY

Average UV index in May - Port Washington, NY
  • Average UV index in May: 5

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

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Average cloud cover in May
Port Washington, NY

Average cloud cover in May - Port Washington, NY
  • Average cloud cover in May: 43

The month with the most cloud cover is December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 29).

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Average visibility in May
Port Washington, NY

Average visibility in May - Port Washington, NY
  • Average visibility in May: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Port Washington, New York, USA

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