May weather forecast
South Bethany, DE

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Weather in May

May in South Bethany, Delaware, is a prelude to summer, with continued temperature increases and the promise of longer, sunnier days. The weather becomes distinctly different from April, with noticeably longer daylight hours. However, precipitation rises to an average of 2.05" (52mm), keeping the late-spring atmosphere moist. Outdoor activities become more appealing as the city starts to fully revel in the positive changes that come with the season. May's weather serves as a delightful transition from spring to summer, with the excitement of summer's imminent arrival hanging tangibly in the air.

Temperature

In South Bethany, stepping into May brings a gentle temperature nudge, moving slightly up from April's refreshing 56.7°F (13.7°C) to a comfortable 65.1°F (18.4°C). May nights in South Bethany reflect a consistent temperature dip to a moderate 59°F (15°C), a slight descent from daytime peaks.

Humidity

The most humid month in South Bethany is May, with an average relative humidity of 82%.

Rainfall

In May, the rain falls for 14.1 days. Throughout May, 2.05" (52mm) of precipitation is accumulated. In South Bethany, during the entire year, the rain falls for 147.8 days and collects up to 23.98" (609mm) of precipitation.

Snowfall

April through November are months without snowfall in South Bethany.

Daylight

In May, the average length of the day is 14h and 17min.
On the first day of the month, sunrise is at 6:02 am and sunset at 7:52 pm. On the last day of May, sunrise is at 5:37 am and sunset at 8:18 pm EDT.

Sunshine

The average sunshine in May is 9.2h.

UV index

The months with the highest UV index in South Bethany are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 6 in May interprets into the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature in South Bethany?

The average high-temperature and low-temperature during May are 65.1°F (18.4°C) and 59°F (15°C) respectively.

What is the most humid month in South Bethany?

May is the most humid month in South Bethany, Delaware, with an average relative humidity of 82%.

What is the average humidity in May in South Bethany?

The average relative humidity in May is 82%.

How much does it rain in South Bethany in May?

In May, in South Bethany, Delaware, the rain falls for 14.1 days. Throughout May, 2.05" (52mm) of precipitation is accumulated.

When it does not snow in South Bethany?

In South Bethany, Delaware, snow does not fall in April through November.

How many hours of daylight does South Bethany have in May?

In South Bethany, the average day length in May is 14h and 17min.

What time are sunrise and sunset in May in South Bethany?

On the first day of May, sunrise is at 6:02 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:18 pm EDT.

How long on average sun shines in May in South Bethany?

The average sunshine duration in May in South Bethany, Delaware, is 9.2h.

What is the month with the highest UV index in South Bethany?

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

What is the UV index intensity in May in South Bethany?

In South Bethany, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJFMAMayJJASOND
Apr
May
Jun
Average high temperature
56.7°F 13.7°C
65.1°F 18.4°C
74.5°F 23.6°C
Average low temperature
49.1°F 9.5°C
59°F 15°C
68°F 20°C
Average pressure
30" 762mmHg
30.02" 763mmHg
29.94" 760mmHg
Average wind speed
13mph 20.9km/h
11.2mph 18km/h
10.3mph 16.6km/h
Average max. wind speed
14mph 22.5km/h
12.1mph 19.5km/h
11mph 17.7km/h
Average wind speed gusts
22.6mph 36.4km/h
19.4mph 31.2km/h
17.5mph 28.2km/h
Average humidity
77%
82%
80%
Average rainfall
1.77" 45mm
2.05" 52mm
2.24" 57mm
Average rainfall days
13.6
14.1
14.2
Average snowfall
0" 0mm
0" 0mm
0" 0mm
Average snowfall days
0.2
0
0
Average daylight
13h 1min
14h 2min
14h 5min
Average sunshine
8h 5min
9h 1min
10h 2min
Average sunshine days
15.3
14.7
14
Average UV index
4
6
6
Average cloud cover
40%
39%
29%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in May
South Bethany, DE

Average temperature in May - South Bethany, DE
  • Average high temperature in May: 65.1°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (41.7°F).

  • Average low temperature in May: 59°F

The month with the highest average low temperature is July (73.9°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

Average pressure in May
South Bethany, DE

Average pressure in May - South Bethany, 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
South Bethany, DE

Average wind speed in May - South Bethany, DE
  • Average wind speed in May: 11.2mph

The windiest month (with the highest average wind speed) is January (13.5mph).
The calmest month (with the lowest average wind speed) is August (9.3mph).

Average humidity in May
South Bethany, DE

Average humidity in May - South Bethany, DE
  • Average humidity in May: 82%

The month with the highest relative humidity is May (82%).
The month with the lowest relative humidity is November (73%).

Average rainfall in May
South Bethany, DE

Average rainfall in May - South Bethany, DE
  • Average rainfall in May: 2.05"

The wettest month (with the highest rainfall) is August (2.68").
The driest month (with the least rainfall) is January (1.38").

Average rainfall days in May
South Bethany, DE

Average rainfall days in May - South Bethany, DE
  • Average rainfall days in May: 14.1 days

The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is January (8.5 days).

Average snowfall in May
South Bethany, DE

Average snowfall in May - South Bethany, DE
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in May
South Bethany, DE

Average snowfall days in May - South Bethany, DE
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in May /
Average sunshine in May
South Bethany, DE

Average daylight in May / Average sunshine in May - South Bethany, 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 1min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in May
South Bethany, DE

Average sunshine days in May - South Bethany, DE
  • Average sunshine days in May: 14.7 days

The months with the most sunshine days are January and November (18.4 days).
The month with the least sunshine days is August (13.2 days).

Average UV index in May
South Bethany, DE

Average UV index in May - South Bethany, 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
South Bethany, DE

Average cloud cover in May - South Bethany, DE
  • Average cloud cover in May: 39

The months with the most cloud cover are February, March and December (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 26).

Average visibility in May
South Bethany, DE

Average visibility in May - South Bethany, 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).

South Bethany, Delaware, USA

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