Climate and monthly weather forecastLewes, DE
Climate and monthly weather forecast
The climate of Lewes
Lewes, Delaware falls under the Humid Subtropical category according to the Koppen Climate Classification. This classification, also referred to as Cfa, is primarily distinguished by a lack of a dry season and insignificant temperature fluctuations. Lewes, located along the eastern seaboard of the United States, enjoys a moderate coastal climate year-round.Throughout the year, temperatures in Lewes range from 32°F (0°C) to an average high of 80.6°F (27°C). Noticeably, the warmer months of the year, that is, from May to September, witness temperatures elevating from 57.6°F (14.2°C) to as high as 80.6°F (27°C). The remaining months exhibit a downward trend with temperatures eventually settling around the freezing point in January and February. Humidity remains relatively constant all year round, fluctuating gently between 73% and 81%. Wind speed follows a similar pattern, shedding a fewmph during the warmer months, before picking up pace towards the cooler period of the year.
Rainfall is commonly experienced throughout the year in Lewes, peaking from July to August with an average of 4.13" (105mm). These showers tend also to get accompanied by increased cloud cover, incidentally reducing the amount of sunlight being received during this period. The town experiences a bare minimum of snowfall with 0.98" (25mm) in January and a trivial amount in November. The city witness maximum daylight of 14.9 hours in the month of June, with the shortest day having 9.5 hours of daylight in December.
The best time to visit Lewes
For outdoor enthusiasts and sun seekers, the greatest time to visit Lewes would doubtlessly be during the vivacious sunny months of June and July. These months dispense ample daylight lasting up to 14.9 hours along with maximum temperatures soaring up to 80.6°F (27°C). This is also when the sea is the most inviting, with sea temperatures peaking at 76.9°F (24.9°C). Despite the slight increase in rainfall during July, the luminous days more than compensate for the sporadic showers.The worst time to visit Lewes
Being a coastal city, winters in Lewes can be bone-chilling, making it less appealing to visitors during January and February. During these months, the temperature can drop to about 32°F (0°C).Snow showers occur in January, further bringing down the temperature. Granted, the city prides itself in being sunny most of the year; however, during winter months, sunshine hours reduce to about 5.2 hours a day, giving short daylight periods.Spring weather in Lewes
Spring heralds the transition from the cold winter days to the brighter warmer days in Lewes. Temperatures range from 47.8°F (8.8°C) in March to 66.4°F (19.1°C) in May. With precipitation levels gradually rising from 2.99" (76mm) to 3.35" (85mm) during this season, the humidity levels, too, slightly increase. However, the daylight lasts longer, with May seeing sunshine up to 14.3 hours, and the winds considerably diminish.Summer weather in Lewes
The summer months, from June to August, experience the warmest weather in Lewes. With temperatures ranging from 75.4°F (24.1°C) to a balmy 80.6°F (27°C), it is the perfect time for a beach getaway. Rainfall is slightly heightened in summer, with August witnessing about 4.13" (105mm). The sea temperature also peaks to a warm 76.9°F (24.9°C), ideal for swimming. Long days allow visitors plenty of time to explore, with up to 14.9 hours of daylight observed during June.Autumn weather in Lewes
Autumn witnesses a decline in temperatures from a mild 74.1°F (23.4°C) to a cool 54.5°F (12.5°C). Humidity stands firm at around the 76% mark. Rainfall subsides to an average of 3.5" (89mm) in October and plummets to a mere 2.68" (68mm) in November. Daylight hours begin to dwindle from 12.4 hours in September to 10.1 hours towards the end of November.Winter weather in Lewes
Beginning in December, winters in Lewes bring with them crisp air with temperatures plummeting to about 32°F (0°C) in January. Combined with the reduced daylight hours, it leads to colder days and nights. Despite the lower temperatures, the city enjoys nearly 5.2 hours of sunshine a day. Snowfall, albeit negligible at 0.98" (25mm) in January, adds a frosty charm to the city during this season. The season closes in February with a slight rise in temperature preparing Lewes for the arrival of spring.Weather in January
January's weather is typified by cold temperatures, higher wind speeds, and frequent precipitation. Often cloaked with a white blanket of snow, Lewes experiences frosty mornings with a low temperature of 32°F (0°C), while afternoon highs may reach up to 41.2°F (5.1°C). Weather in January »Weather in February
The chilly grasp of winter remains firmly in place in February as the temperature, though gradually increasing, exhibits the coolness of January. An incremental rise in temperature is noted, with lows averaging at 34.2°F (1.2°C) and highs on warmer days reaching 42.6°F (5.9°C). Weather in February »Weather in March
The Lewes weather in March embodies the transition from winter to spring. Temperatures begin to climb out of winter lows; the morning chill at 39.6°F (4.2°C) makes way for daytime temperatures peaking at a mild 47.8°F (8.8°C). Weather in March »Weather in April
The full bloom of spring arrives in April, bringing mild and pleasant temperatures to Lewes. A significant difference is noted in both the lowest and highest temperatures from March, at 48.6°F (9.2°C) and 57.6°F (14.2°C) respectively. Weather in April »Weather in May
May is the month where spring makes its graceful exit to welcome the warmth of summer. The increasing warmth is apparent in the steady rise in temperature, with morning lows averaging at 58.1°F (14.5°C) and daytime highs climbing to a delightful 66.4°F (19.1°C). Weather in May »Weather in June
The summer child of Lewes, June, enters with ambient warmth and brighter days. In terms of temperature, highs could go up to 75.4°F (24.1°C) while the lows could drop to the bearable cold of 67.6°F (19.8°C). The weather of June sees a marked jump in the sea temperature, which reaches 68.2°F (20.1°C), inviting beach dwellers to take a dip into the waters. Weather in June »Weather in July
July, the height of summer, is characterized by warm temperatures and frequent sunshine. At 80.6°F (27°C), the high temperature marks a peak for the year, while the mornings are at the innocuous chill of 73°F (22.8°C). The weather makes a steady transition from June with humidity levels slightly declining, offering some respite from the summer heat. Weather in July »Weather in August
The warm summer's settled rhythm continues in August, which retains relatively high temperatures throughout the month. A minor decrease from July is observed, with lows averaging at 72.1°F (22.3°C) and highs peaking at 79.5°F (26.4°C). Weather in August »Weather in September
Subtle shifts in the weather start to emerge in September, indicating the beginning of autumn. There’s a clear fall in temperature when compared to August, with morning lows recorded at 67.3°F (19.6°C) and highs around 74.1°F (23.4°C). Weather in September »Weather in October
October encompasses the fall season in Lewes, bringing cooler temperatures, pleasant sunshine hours, and increased wind speeds. Temperatures linger between 57.9°F (14.4°C) and 65.3°F (18.5°C), marking a significant drop compared to September. Weather in October »Weather in November
November is characterized by lowering temperatures and shorter daylight hours, as Lewes slowly transitions into the winter season. A drop in average temperatures is noticed, ranging from a chilly 46.4°F (8°C) in the mornings to a somewhat warmer 54.5°F (12.5°C) in the afternoon. Weather in November »Weather in December
December in Lewes ushers in the full force of winter, depicted by falling temperatures, decreased daylight hours, and the onset of snowfall. With the daily temperature ranging from 39.2°F (4°C) to 46.9°F (8.3°C), the city sees the lowest temperatures of the year. Weather in December »Updated: Aug 24, 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
January is the coldest month of the year, registering average temperatures as high as 41.2°F (5.1°C) and as low as 32°F (0°C).
The month with the least rainfall is January, when the rain falls for 9.6 days and typically collects 2.2" (56mm) of precipitation.
Throughout the year, there are 173.6 rainfall days, and 36.97" (939mm) of precipitation is accumulated.
Months with snowfall are January through March, November and December.
January is the month with the most snowfall. Snow falls for 3.7 days and accumulates 0.98" (25mm) of snow.
In Lewes, during the entire year, snow falls for 10.1 days and aggregates up to 3.39" (86mm) of snow.
January and December, with an average maximum UV index of 2, are months with the lowest UV index.
February is the month with the coldest seawater, with an average ocean temperature of 40.6°F (4.8°C).
February has the least sunshine of the year, with an average of 5h of sunshine.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Lewes, 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.
April through October are months without snowfall.
The most humid month is May, with an average relative humidity of 81%.
The months with the highest UV index are May through August, with an average maximum UV index of 6.
The month with the longest days is June, with an average of 14h and 48min of daylight.
July, characterized by an average high temperature of 80.6°F (27°C) and a low temperature of 73°F (22.8°C), is generally the warmest month.
With an average of 11h of sunshine, July has the most sunshine of the year.
The month with the most rainfall is August, when the rain falls for 18.2 days and typically aggregates up to 4.13" (105mm) of precipitation.
August is the month with the warmest seawater, with an average ocean temperature of 77°F (25°C).
The least humid month is November, with an average relative humidity of 73%.
The month with the shortest days is December, with an average of 9h and 30min of daylight.
Average temperature
Lewes, DE
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).
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
Lewes, 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
Lewes, DE
- Average wind speed in January:
12.5mph - Average wind speed in February:
12.2mph - Average wind speed in March:
12.1mph - Average wind speed in April:
11.9mph - Average wind speed in May:
10.2mph - Average wind speed in June:
9.3mph
- Average wind speed in July:
8.4mph - Average wind speed in August:
8.3mph - Average wind speed in September:
9.9mph - Average wind speed in October:
11.7mph - Average wind speed in November:
12.1mph - Average wind speed in December:
11.9mph
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
Lewes, DE
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is November (73%).
Average rainfall
Lewes, DE
- Average rainfall in January:
2.2" - Average rainfall in February:
2.6" - Average rainfall in March:
2.99" - Average rainfall in April:
2.56" - Average rainfall in May:
3.35" - Average rainfall in June:
3.43"
- Average rainfall in July:
3.78" - Average rainfall in August:
4.13" - Average rainfall in September:
2.68" - Average rainfall in October:
3.5" - Average rainfall in November:
2.68" - Average rainfall in December:
3.07"
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
Lewes, DE
- Average rainfall days in January:
9.6 days - Average rainfall days in February:
11.3 days - Average rainfall days in March:
15.1 days - Average rainfall days in April:
15.6 days - Average rainfall days in May:
18.2 days - Average rainfall days in June:
17 days
- Average rainfall days in July:
18.6 days - Average rainfall days in August:
18.2 days - Average rainfall days in September:
14.8 days - Average rainfall days in October:
13.4 days - Average rainfall days in November:
9.9 days - Average rainfall days in December:
11.9 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
Lewes, DE
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
Lewes, DE
- Average snowfall days in January:
3.7 days - Average snowfall days in February:
3.2 days - Average snowfall days in March:
1.6 days - Average snowfall days in April:
0 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:
0.4 days - Average snowfall days in December:
1.2 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 sea temperature
Lewes, DE
The best month for swimming (with the highest average sea temperature) is August (76.9°F).
The coldest month (with the lowest average sea temperature) is February (40.7°F).
Average daylight / Average sunshine
Lewes, 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 36min - 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 30min - Average sunshine in February:
5h - Average sunshine in March:
6h and 54min - Average sunshine in April:
9h - Average sunshine in May:
9h and 18min - Average sunshine in June:
10h and 30min
- Average sunshine in July:
11h - Average sunshine in August:
10h and 36min - Average sunshine in September:
9h and 36min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 48min - Average sunshine in December:
5h and 12min
The month with the most sunshine is July (Average sunshine: 11h).
The month with the least sunshine is February (Average sunshine: 5h).
Average sunshine days
Lewes, DE
- Average sunshine days in January:
17.1 days - Average sunshine days in February:
13.4 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
9.8 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
10.2 days - Average sunshine days in August:
10 days - Average sunshine days in September:
12.2 days - Average sunshine days in October:
15.1 days - Average sunshine days in November:
17.6 days - Average sunshine days in December:
16.3 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
Lewes, 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
Lewes, DE
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
Lewes, 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).
