Climate and monthly weather forecastSouth Bethany, DE
Climate and monthly weather forecast
The climate of South Bethany
South Bethany, situated in Delaware, USA, experiences a Cfa climate under the Köppen climate classification. It signifies the conditions of a Humid subtropical area with no dry season. Observing an annual temperature range from 33.4°F (0.8°C) as a reported monthly average minimum in December and January, to a strikingly warmer high of 79.7°F (26.5°C) in July, South Bethany's residents see significant temperature shifts throughout the year.An annual average relative humidity hovers around 76%, with the subtle yet characteristic variances across the months reflecting the subtropical classification. The area receives a monthly average rainfall between 1.38" (35mm) in January and 2.68" (68mm) in August, accumulating to around 24.36" (619mm) per year. Sufficient indicator of South Bethany's humified climate is in the evidence of rain falling on an average of anywhere from 8.5 to 15.6 days per month.
A unique feature of South Bethany's climate lies in its fleeting snow. Lightly carpeting the ground a few times a year, particularly in January and March, snowfall remains relatively unsubstantial at an average of 0.55" (14mm) in January and 0.39" (10mm) between February and March. An additional hint of uniqueness is the area's light conditions, with daylight fluctuating in a reasonable range from 9.8 hours in December to 14.8 hours in June, and sunshine hours varying between a pleasant 5.1 hours in December to a generous 10.9 hours in July.
The best time to visit South Bethany
Residents and visitors alike may find that June to August is a splendid time to explore South Bethany. During these months, the city sees its highest average temperatures, ranging from 74.5°F (23.6°C) to 79.7°F (26.5°C). Humidity remains moderate, creating the perfect environment for beach-going, and exploring the many outdoor attractions. Similarly, the daylight reaches its peak with 14.8 hours in June, and not falling beyond 14.5 hours until August.The worst time to visit South Bethany
South Bethany may feel less welcoming between January and March, when the temperature dips to its lowest, experiencing averages at 33.4°F (0.8°C) to 47.7°F (8.7°C). Additionally, these colder months bring with them the highest incidence of snowfall, covering the city with an average of 0.55" (14mm) in January and 0.39" (10mm) from February to March.Spring weather in South Bethany
South Bethany’s spring, from March to May, brings a gentle increase in temperature. A monthly average minimum temperature starts from a chilly 40.3°F (4.6°C) in March, gently rises to 56.7°F (13.7°C) in April and further blossoms to a warmly pleasant 65.1°F (18.4°C) in May. As per rainfall, the region receives averages from 1.93" (49mm) in March to 2.05" (52mm) by May, offering a splendid spring with enough rain to green the fields but not enough to disrupt any outdoor activities.Summer weather in South Bethany
South Bethany's summer months, from June to August, are robustly warm. The temperature ascends to an average maximum of 79.7°F (26.5°C) in July, while a comforting wind speed at an average of below 10mph (16.1km/h) offers some relief. Decreased cloud cover during these months also provides the city with its sunniest days, boasting an average peak of 10.9 hours of sunshine in July. Rainfall from June to August stays consistent, with the highest at 2.68" (68mm) in August.Autumn weather in South Bethany
Autumn descends on South Bethany between September and November. During this time, the temperature lowers to an average high of 65.5°F (18.6°C) by October and a low of 47.5°F (8.6°C) by November. Though rainfall in October at 2.52" (64mm) is higher than in September and November, it is within a comfortable range and does not pose any significant inconvenience.Winter weather in South Bethany
Winter in South Bethany, lasting from December to February, is marked by conditions typical of a cold subtropical climate. Average monthly temperatures drop to around 33.4°F (0.8°C) in December and January and a slightly milder 40.3°F (4.6°C) in February. Despite seeing minimal snowfall, winter days are dominantly overcast, and sunshine hours drop to their annual lowest at 5.1 hours in December. The wind speed increases modestly, averaging 13mph (20.9km/h) through these months. Winter rainfall averages remain relatively modest, yet with the lowest average daylight hours, at 9.8 hours in December, outdoor activities may require some planning.Weather in January
January in South Bethany, Delaware, is characterized by a blend of low temperatures and a high chance of rainfall. In comparison to December, there is a slight increase in temperatures, but they remain typically low. The rainfall experienced is also less compared to the highest rainfall months but is recorded at 1.38" (35mm). Weather in January »Weather in February
February sees slightly warmer temperatures than January in South Bethany, Delaware. As the days pass, residents anticipate the coming spring while still experiencing the last whispers of winter. Precipitation slightly increases from 1.38" (35mm) to 1.61" (41mm), contributing to the chilly conditions. Weather in February »Weather in March
The arrival of March in South Bethany, Delaware, signals the transition from winter to spring. Temperature increases are notable compared to February, easing the chill of the previous months. The increase in daylight hours from 10.8 hours to 12 hours also becomes apparent. Weather in March »Weather in April
April in South Bethany, Delaware, welcomes the full arrival of spring with warmer temperatures and longer days. Fluctuations in weather patterns make this month significantly different from its predecessor, March. With an average precipitation of 1.77" (45mm), it is slightly drier, adding to the comfort of the higher temperatures. Weather in April »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. Weather in May »Weather in June
June in South Bethany, Delaware, bids farewell to spring and embraces summer's arrival with higher temperatures and long, balmy days. Compared to the weather in May, days become hotter and nights offer less of the cool respite they did during spring. Weather in June »Weather in July
July, typically the hottest month in South Bethany, Delaware, brings the summer heat with average high temperatures of 79.7°F (26.5°C). Residents acclimate to the hot weather conditions from June, relishing in sunny days synonymous with the month of July. Weather in July »Weather in August
August in South Bethany, Delaware, continues July's pattern of high temperatures, though a slight decrease can be noted. Compared to July, August maintains a similar weather pattern, with the heat lingering both during the day and at night. Weather in August »Weather in September
September brings with it the beginnings of a seasonal transition in South Bethany, Delaware. The city witnesses an appreciable decrease in temperature from the hotter months of July and August. However, precipitation lowers from the year's high at an average of 1.77" (45mm), suggesting September may be a more comfortable outdoor month. Weather in September »Weather in October
October in South Bethany, Delaware, fully embraces fall with a further dip in temperatures compared to September. The progression of autumn intensifies as the colors of fall become more vibrant. Rainfall picks up, increasing to an average of 2.52" (64mm), adding considerable moisture to the cooler weather. Weather in October »Weather in November
November in South Bethany, Delaware, is a frequently cold month, with temperatures dropping significantly in comparison to October. A discernible decrease in sunshine hours and daylight hours adds to the overall chill. Average precipitation reduces to 1.57" (40mm), offering a stark difference in moisture levels from the highs seen earlier in the year. Weather in November »Weather in December
December in South Bethany, Delaware, is a full winter month with the year's lowest temperatures. In contrast to the warmer months of the year, December brings with it cold winds and minimal sunshine. Though snowfall is low at 0.2" (5mm), it is enough to blanket the city in a white winter wonderland. Weather in December »Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The coldest period in South Bethany tends to be January, when average temperatures fluctuate between a high of 41.7°F (5.4°C) and a low of 33.4°F (0.8°C).
The month with the least rainfall is January, when the rain falls for 8.5 days and typically collects 1.38" (35mm) of precipitation.
Throughout the year, in South Bethany, Delaware, there are 147.8 rainfall days, and 23.98" (609mm) of precipitation is accumulated.
January through March and December are months with snowfall in South Bethany, Delaware.
The month with the most snowfall in South Bethany, Delaware, is January, when snow falls for 2.8 days and typically aggregates up to 0.55" (14mm) of snow.
Throughout the year, in South Bethany, there are 8.7 snowfall days, and 1.54" (39mm) of snow is accumulated.
January and December, with an average maximum UV index of 2, are months with the lowest UV index in South Bethany, Delaware.
February has the least sunshine of the year in South Bethany, Delaware, with an average of 5h of sunshine.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in South Bethany, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
In South Bethany, snow does not fall in April through November.
May is the most humid month in South Bethany, with an average relative humidity of 82%.
The months with the highest UV index are May through August, with an average maximum UV index of 6.
With an average of 14h and 48min of daylight, June has the longest days of the year.
South Bethany's temperatures peak on average in July, reaching 79.7°F (26.5°C) at their highest and 73.9°F (23.3°C) at their lowest.
With an average of 10.9h of sunshine, July has the most sunshine of the year.
The month with the most rainfall is August, when the rain falls for 15.3 days and typically aggregates up to 2.68" (68mm) of precipitation.
With an average relative humidity of 73%, November is the least humid month.
With an average of 9h and 30min of daylight, December has the shortest days of the year in South Bethany.
Average temperature
South Bethany, DE
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).
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
South Bethany, DE
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
30"Hg - Average pressure in May:
30.02"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.04"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.1"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
South Bethany, DE
- Average wind speed in January:
13.5mph - Average wind speed in February:
13.2mph - Average wind speed in March:
13.2mph - Average wind speed in April:
13mph - Average wind speed in May:
11.2mph - Average wind speed in June:
10.3mph
- Average wind speed in July:
9.4mph - Average wind speed in August:
9.3mph - Average wind speed in September:
11.2mph - Average wind speed in October:
12.8mph - Average wind speed in November:
13.2mph - Average wind speed in December:
13mph
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
South Bethany, DE
The month with the highest relative humidity is May (82%).
The month with the lowest relative humidity is November (73%).
Average rainfall
South Bethany, DE
- Average rainfall in January:
1.38" - Average rainfall in February:
1.61" - Average rainfall in March:
1.93" - Average rainfall in April:
1.77" - Average rainfall in May:
2.05" - Average rainfall in June:
2.24"
- Average rainfall in July:
2.64" - Average rainfall in August:
2.68" - Average rainfall in September:
1.77" - Average rainfall in October:
2.52" - Average rainfall in November:
1.57" - Average rainfall in December:
1.81"
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
South Bethany, DE
- Average rainfall days in January:
8.5 days - Average rainfall days in February:
8.8 days - Average rainfall days in March:
12.9 days - Average rainfall days in April:
13.6 days - Average rainfall days in May:
14.1 days - Average rainfall days in June:
14.2 days
- Average rainfall days in July:
15.6 days - Average rainfall days in August:
15.3 days - Average rainfall days in September:
12.6 days - Average rainfall days in October:
11.7 days - Average rainfall days in November:
9.4 days - Average rainfall days in December:
11.1 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
South Bethany, DE
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
South Bethany, DE
- Average snowfall days in January:
2.8 days - Average snowfall days in February:
2.2 days - Average snowfall days in March:
1.5 days - Average snowfall days in April:
0.2 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.3 days - Average snowfall days in December:
1.7 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 / Average sunshine
South Bethany, DE
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 30min
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 January:
5h and 24min - Average sunshine in February:
5h and 0min - Average sunshine in March:
6h and 42min - Average sunshine in April:
8h and 54min - Average sunshine in May:
9h and 12min - Average sunshine in June:
10h and 24min
- Average sunshine in July:
10h and 54min - Average sunshine in August:
10h and 36min - Average sunshine in September:
9h and 18min - Average sunshine in October:
5h and 48min - Average sunshine in November:
5h and 36min - Average sunshine in December:
5h and 6min
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
South Bethany, DE
- Average sunshine days in January:
18.4 days - Average sunshine days in February:
15.3 days - Average sunshine days in March:
15.8 days - Average sunshine days in April:
15.3 days - Average sunshine days in May:
14.7 days - Average sunshine days in June:
14 days
- Average sunshine days in July:
13.8 days - Average sunshine days in August:
13.2 days - Average sunshine days in September:
14.7 days - Average sunshine days in October:
16.3 days - Average sunshine days in November:
18.4 days - Average sunshine days in December:
16.3 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
South Bethany, DE
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
South Bethany, DE
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
South Bethany, DE
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).
