Climate and monthly weather forecast
South Bethany, DE

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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 »
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Frequently asked questions

What month is the coldest in South Bethany?

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).

What is the driest month in South Bethany?

The month with the least rainfall is January, when the rain falls for 8.5 days and typically collects 1.38" (35mm) of precipitation.

How many days does it rain in South Bethany?

Throughout the year, in South Bethany, Delaware, there are 147.8 rainfall days, and 23.98" (609mm) of precipitation is accumulated.

When does it snow in South Bethany?

January through March and December are months with snowfall in South Bethany, Delaware.

What is the snowiest month in South Bethany?

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.

How much does it snow in South Bethany?

Throughout the year, in South Bethany, there are 8.7 snowfall days, and 1.54" (39mm) of snow is accumulated.

When is the lowest UV index in South Bethany?

January and December, with an average maximum UV index of 2, are months with the lowest UV index in South Bethany, Delaware.

What is the month with the least sunshine in South Bethany?

February has the least sunshine of the year in South Bethany, Delaware, with an average of 5h of sunshine.

When is Daylight Saving Time (DST) in South Bethany?

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.

When it does not snow in South Bethany?

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

What is the most humid month in South Bethany?

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

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

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

When are the longest days in South Bethany?

With an average of 14h and 48min of daylight, June has the longest days of the year.

What are the warmest months in South Bethany?

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.

What month has the most sunshine in South Bethany?

With an average of 10.9h of sunshine, July has the most sunshine of the year.

What is the wettest month in South Bethany?

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.

What is the least humid month in South Bethany?

With an average relative humidity of 73%, November is the least humid month.

What is the month with the shortest days in South Bethany?

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

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).

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Average pressure
South Bethany, DE

Average pressure - South Bethany, DE

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed
South Bethany, DE

Average wind speed - South Bethany, DE

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).

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Average rainfall
South Bethany, DE

Average rainfall - South Bethany, DE

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

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Average rainfall days
South Bethany, DE

Average rainfall days - South Bethany, DE

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).

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Average snowfall
South Bethany, DE

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").

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Average snowfall days
South Bethany, DE

Average snowfall days - South Bethany, DE

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).

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Average daylight / Average sunshine
South Bethany, DE

Average daylight / Average sunshine - South Bethany, DE

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).

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).

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Average sunshine days
South Bethany, DE

Average sunshine days - South Bethany, DE

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).

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Average UV index
South Bethany, DE

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).

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Average visibility
South Bethany, DE

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).

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South Bethany, Delaware, USA

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