Dover
Delaware, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Dover, DE

The public Archives building in Dover, Delaware, between two large trees
The public Archives building in Dover, Delaware, between two large trees
May, the last month of the spring, in Dover, is a moderately hot month, with average temperature fluctuating between 51.8°F (11°C) and 75.2°F (24°C).

Temperature

In Dover, the average high-temperature in May rises, from an enjoyable 64.4°F (18°C) in April, to a warm 75.2°F (24°C). In Dover, in May, the average low-temperature is 51.8°F (11°C).

Rainfall

In Dover, in May, it is raining for 10 days, with typically 3.9" (98mm) of accumulated precipitation. Throughout the year, there are 115 rainfall days, and 43.5" (1105mm) of precipitation is accumulated.

Daylight

In May, the average length of the day in Dover is 14.3h.

Sunshine

In May, the average sunshine in Dover, Delaware, is 8h.

UV index

In Dover, the average daily maximum UV index is 8. A UV Index value of 8 to 10 symbolizes a very high health hazard from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 8 transform into the following instructions:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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.

What is the temperature in May in Dover?

The average high-temperature, in May, is 75.2°F (24°C), while the average low-temperature is 51.8°F (11°C).

How much does it rain in Dover in May?

In May, the rain falls for 10 days. Throughout May, 3.9" (98mm) of precipitation is accumulated.

How many hours of daylight does Dover have in May?

In Dover, Delaware, the average length of the day in May is 14.3h.

How many hours of sunshine does Dover have in May?

The average sunshine in May is 8h.

How high is the UV index in May in Dover?

The average daily maximum UV index in May in Dover, Delaware, is 8. A UV Index value of 8 to 10 symbolizes a very high hazard to health from unprotected exposure to the UV radiation.
Average temperature in May - Dover, DE
  • Average high temperature in May: 75°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (41°F).

  • Average low temperature in May: 52°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average rainfall in May - Dover, DE
  • Average rainfall in May: 3.9"

The wettest month (with the highest rainfall) is August (4.3").
The driest month (with the lowest rainfall) is February (3").

Average rainfall days in May - Dover, DE
  • Average rainfall days in May: 10 days

The month with the highest number of rainy days is July (11 days).
The month with the lowest number of rainy days is October (7 days).

Average daylight in May / Average sunshine in May - Dover, DE
  • Average daylight in May: 14.3h

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in May: 8h

Months with most sunshine are June and July (Average sunshine: 9h).
Months with least sunshine are January and December (Average sunshine: 5).

Average UV index in May - Dover, DE
  • Average UV index in May: 8

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January, November and December (UV index 2).