May weather forecast
Topsail Beach, NC

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Weather in May

May marks the threshold of summer in Topsail Beach, highlighted by a significant temperature hike to an average high of 77.4°F (25.2°C). The sea now serves as a tempting delight, its temperature escalating to a balmy 70.7°F (21.5°C). The daylight hours stretch further, reaching near their annual peak. The concurrent increase in humidity and the UV index alerts locals and visitors to brace themselves for the impending hot summer days. Unusually, May experiences the third-highest rainfall, with an average of 1.97" (50mm), second only to the thunderstorm-prone months of August and September.

Temperature

May's onset brings a subtle temperature rise, moving from an agreeable 69.4°F (20.8°C) in April to a moderately hot 77.4°F (25.2°C). Topsail Beach's nighttime temperature during May is consistently averaged at a comfortable 66.9°F (19.4°C).

Humidity

In May, the average relative humidity in Topsail Beach is 76%.

Rainfall

In May, in Topsail Beach, the rain falls for 14.3 days. Throughout May, 1.97" (50mm) of precipitation is accumulated. Throughout the year, in Topsail Beach, there are 150.4 rainfall days, and 20.79" (528mm) of precipitation is accumulated.

Snowfall

In Topsail Beach, snow does not fall in March through November.

Ocean temperature

In Topsail Beach, in May, the average water temperature is 70.7°F (21.5°C).
Note: In 70.7°F (21.5°C), swimming is not an enjoyable activity for most. The challenge of managing one's breathing increases as the temperature goes under 69.8°F (21°C).

Daylight

The average length of the day in May is 13h and 58min.
On the first day of May, sunrise is at 6:19 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 8:17 pm EDT.

Sunshine

In Topsail Beach, the average sunshine in May is 10.3h.

UV index

In May, the average daily maximum UV index in Topsail Beach is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: The UV index of 6 in May translates into these instructions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be on guard! The reflective nature of sand and water boosts UV exposure.
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Frequently asked questions

What are the temperatures in Topsail Beach in May?

The high-temperature, in May, in Topsail Beach, is 77.4°F (25.2°C), while the low-temperature averages to 66.9°F (19.4°C).

What is the average humidity in May in Topsail Beach?

In Topsail Beach, the average relative humidity in May is 76%.

How many days does it rain in May in Topsail Beach?

In Topsail Beach, North Carolina, during May, the rain falls for 14.3 days and regularly aggregates up to 1.97" (50mm) of precipitation.

When it does not snow in Topsail Beach?

March through November are months without snowfall in Topsail Beach.

How cold is the water in May in Topsail Beach?

In May, the average ocean temperature in Topsail Beach, North Carolina, is 70.7°F (21.5°C). Swimming in 70.7°F (21.5°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the average length of the day in May in Topsail Beach?

The average day length in May is 13h and 58min.

What time are sunrise and sunset in May in Topsail Beach?

In May, on the first day of the month, sunrise is at 6:19 am and sunset at 7:55 pm. On the last day of the month, in Topsail Beach, sunrise is at 5:59 am and sunset at 8:17 pm EDT.

How long on average sun shines in May in Topsail Beach?

In May, the average sunshine duration is 10.3h.

What is the UV index reading in May in Topsail Beach?

In May, the average daily maximum UV index in Topsail Beach is 6. A UV Index value of 6 to 7 symbolizes a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Topsail Beach, NC

Average temperature in May - Topsail Beach, NC
  • Average high temperature in May: 77.4°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (54.5°F).

  • Average low temperature in May: 66.9°F

The month with the highest average low temperature is July (77°F).
The coldest month (with the lowest average low temperature) is January (42.4°F).

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Average pressure in May
Topsail Beach, NC

Average pressure in May - Topsail Beach, NC
  • Average pressure in May: 30.03"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

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Average wind speed in May
Topsail Beach, NC

Average wind speed in May - Topsail Beach, NC
  • Average wind speed in May: 9.8mph

The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is August (8.2mph).

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Average humidity in May
Topsail Beach, NC

Average humidity in May - Topsail Beach, NC
  • Average humidity in May: 76%

The months with the highest relative humidity are August and December (77%).
The months with the lowest relative humidity are January and March (73%).

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Average rainfall in May
Topsail Beach, NC

Average rainfall in May - Topsail Beach, NC
  • Average rainfall in May: 1.97"

The wettest month (with the highest rainfall) is September (2.91").
The driest month (with the least rainfall) is January (0.79").

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Average rainfall days in May
Topsail Beach, NC

Average rainfall days in May - Topsail Beach, NC
  • Average rainfall days in May: 14.3 days

The month with the highest number of rainy days is August (19.5 days).
The month with the least rainy days is November (8.2 days).

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Average snowfall in May
Topsail Beach, NC

Average snowfall in May - Topsail Beach, NC
  • Average snowfall in May: 0"

The months with the highest snowfall are January, February and December (0.04").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in May
Topsail Beach, NC

Average snowfall days in May - Topsail Beach, NC
  • Average snowfall days in May: 0 days

The months with the highest number of snowfall days are January and February (0.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average sea temperature in May
Topsail Beach, NC

Average sea temperature in May - Topsail Beach, NC
  • Average sea temperature in May: 70.7°F

The best month for swimming (with the highest average sea temperature) is August (82.8°F).
The coldest month (with the lowest average sea temperature) is February (57.5°F).

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Average daylight in May /
Average sunshine in May
Topsail Beach, NC

Average daylight in May / Average sunshine in May - Topsail Beach, NC
  • Average daylight in May: 14h and 0min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in May: 10h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

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Average sunshine days in May
Topsail Beach, NC

Average sunshine days in May - Topsail Beach, NC
  • Average sunshine days in May: 13.4 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is August (8.2 days).

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Average UV index in May
Topsail Beach, NC

Average UV index in May - Topsail Beach, NC
  • Average UV index in May: 6

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).

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Average cloud cover in May
Topsail Beach, NC

Average cloud cover in May - Topsail Beach, NC
  • Average cloud cover in May: 30

The months with the most cloud cover are February and December (Cloud cover 39).
The months with the least cloud cover are June and July (Cloud cover 26).

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Average visibility in May
Topsail Beach, NC

Average visibility in May - Topsail Beach, NC
  • 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).

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Topsail Beach, North Carolina, USA

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