May weather forecast
Nassau, DE

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Weather in May

May, the last month of the spring in Nassau, is a refreshing month, with an average temperature fluctuating between 66.4°F (19.1°C) and 58.1°F (14.5°C).

Temperature

May brings a slight elevation in the average high-temperature, transitioning from April's mild 57.6°F (14.2°C) to an enjoyable 66.4°F (19.1°C). Nassau's nocturnal average in May closely mirrors its daytime temperatures, settling at a mild 58.1°F (14.5°C).

Humidity

With an average relative humidity of 81%, May is the most humid month.

Rainfall

In Nassau, Delaware, in May, during 18.2 rainfall days, 3.35" (85mm) of precipitation is typically accumulated. In Nassau, during the entire year, the rain falls for 173.6 days and collects up to 36.97" (939mm) of precipitation.

Snowfall

In Nassau, snow does not fall in April through October.

Daylight

In Nassau, the average length of the day in May is 14h and 18min.
On the first day of May in Nassau, sunrise is at 6:02 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:19 pm EDT.

Sunshine

The average sunshine in May is 9.3h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In May, the maximum UV index of 6 translates into these guidelines:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Nassau in May?

The average high-temperature and low-temperature in Nassau, Delaware, during May are 66.4°F (19.1°C) and 58.1°F (14.5°C) respectively.

What is the most humid month in Nassau?

The most humid month in Nassau is May, with an average relative humidity of 81%.

What is the average humidity in May in Nassau?

The average relative humidity in May is 81%.

How many days does it rain in May in Nassau?

In Nassau, in May, it is raining for 18.2 days, with typically 3.35" (85mm) of accumulated precipitation.

When it does not snow in Nassau?

In Nassau, snow does not fall in April through October.

How many hours of daylight does Nassau have in May?

The average day length in May in Nassau, Delaware, is 14h and 18min.

When are sunrise and sunset in May in Nassau?

On the first day of May in Nassau, Delaware, sunrise is at 6:02 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:19 pm EDT.

How many hours of sunshine does Nassau have in May?

In May, the average sunshine duration in Nassau, Delaware, is 9.3h.

What are the months with the highest UV index in Nassau?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Nassau.

How high is the UV index in May in Nassau?

In May, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Nassau, DE

Average temperature in May - Nassau, DE
  • Average high temperature in May: 66.4°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (41.2°F).

  • Average low temperature in May: 58.1°F

The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (32°F).

Average pressure in May
Nassau, DE

Average pressure in May - Nassau, DE
  • Average pressure in May: 30.02"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).

Average wind speed in May
Nassau, DE

Average wind speed in May - Nassau, DE
  • Average wind speed in May: 10.2mph

The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).

Average humidity in May
Nassau, DE

Average humidity in May - Nassau, DE
  • Average humidity in May: 81%

The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is November (73%).

Average rainfall in May
Nassau, DE

Average rainfall in May - Nassau, DE
  • Average rainfall in May: 3.35"

The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is January (2.2").

Average rainfall days in May
Nassau, DE

Average rainfall days in May - Nassau, DE
  • Average rainfall days in May: 18.2 days

The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is January (9.6 days).

Average snowfall in May
Nassau, DE

Average snowfall in May - Nassau, DE
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in May
Nassau, DE

Average snowfall days in May - Nassau, DE
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (3.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in May /
Average sunshine in May
Nassau, DE

Average daylight in May / Average sunshine in May - Nassau, DE
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in May: 9h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in May
Nassau, DE

Average sunshine days in May - Nassau, DE
  • Average sunshine days in May: 9.8 days

The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (9.8 days).

Average UV index in May
Nassau, DE

Average UV index in May - Nassau, DE
  • Average UV index in May: 6

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

Average cloud cover in May
Nassau, DE

Average cloud cover in May - Nassau, DE
  • Average cloud cover in May: 38

The months with the most cloud cover are February and March (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 26).

Average visibility in May
Nassau, DE

Average visibility in May - Nassau, DE
  • 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).

Nassau, Delaware, USA

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