May weather forecast
Port Clinton, OH

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Weather in May

May is the herald of the true spring in Port Clinton. The month experiences a big leap in temperatures, eager to welcome the upcoming summer season. With longer daylight hours and greater sunshine duration, the city gleams under the clear skies. However, it is also the wettest month in terms of rainfall with precipitation as high as 4.53" (115mm). Despite this, spirits remain undeterred, and the city springs back to life after a long, chilly winter spell.

Temperature

May's arrival in Port Clinton coincides with a temperature rise, moving from April's fresh 51.8°F (11°C) to an enjoyable 63°F (17.2°C). During May, the average low-temperature is a cool 51.3°F (10.7°C).

Humidity

In Port Clinton, Ohio, the average relative humidity in May is 79%.

Rainfall

In Port Clinton, in May, during 18 rainfall days, 4.53" (115mm) of precipitation is typically accumulated. In Port Clinton, during the entire year, the rain falls for 163.4 days and collects up to 34.92" (887mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Port Clinton aggregates 0.04" (1mm) of snow. In Port Clinton, during the entire year, snow falls for 48.2 days and aggregates up to 11.89" (302mm) of snow.

Ocean temperature

In Port Clinton, the average seawater temperature in May is 51.4°F (10.8°C).
Note: While a brief time in 51.4°F (10.8°C) at 55.4°F (13°C) is already bracing, plunging below 50°F (10°C) can severely affect breathing and introduce a cold shock, relying on your physical state.

Daylight

In Port Clinton, the average length of the day in May is 14h and 32min.
On the first day of May, sunrise is at 6:27 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 8:58 pm EDT.

Sunshine

The average sunshine in May is 8.9h.

UV index

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index, 5 during May, leads to the following recommendations:
Make use of precautions - It is urged to ward off sun damage. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Updated: Jun 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May?

The average high-temperature, in May, in Port Clinton, is 63°F (17.2°C), while the average low-temperature is 51.3°F (10.7°C).

What is the average humidity in May?

In Port Clinton, the average relative humidity in May is 79%.

How many days does it rain in May in Port Clinton?

In Port Clinton, in May, during 18 rainfall days, 4.53" (115mm) of precipitation is typically accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Port Clinton aggregates 0.04" (1mm) of snow.

What is the ocean temperature in May?

In Port Clinton, the average seawater temperature in May is 51.4°F (10.8°C). Swimming in 51.4°F (10.8°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

How many hours of daylight does Port Clinton have in May?

In Port Clinton, the average day length in May is 14h and 32min.

When are sunrise and sunset in May?

On the first day of May, sunrise is at 6:27 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 8:58 pm EDT.

How long on average sun shines in May?

The average sunshine duration in May is 8.9h.

How high is the UV index in May?

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Port Clinton, OH

Average temperature in May - Port Clinton, OH
  • Average high temperature in May: 63°F

The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in May: 51.3°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (21°F).

Average pressure in May
Port Clinton, OH

Average pressure in May - Port Clinton, OH
  • Average pressure in May: 29.98"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in May
Port Clinton, OH

Average wind speed in May - Port Clinton, OH
  • Average wind speed in May: 9.2mph

The windiest month (with the highest average wind speed) is January (12.1mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).

Average humidity in May
Port Clinton, OH

Average humidity in May - Port Clinton, OH
  • Average humidity in May: 79%

The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is October (74%).

Average rainfall in May
Port Clinton, OH

Average rainfall in May - Port Clinton, OH
  • Average rainfall in May: 4.53"

The wettest month (with the highest rainfall) is June (4.76").
The driest month (with the least rainfall) is February (1.57").

Average rainfall days in May
Port Clinton, OH

Average rainfall days in May - Port Clinton, OH
  • Average rainfall days in May: 18 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (7.6 days).

Average snowfall in May
Port Clinton, OH

Average snowfall in May - Port Clinton, OH
  • Average snowfall in May: 0.04"

The month with the highest snowfall is February (3.54").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in May
Port Clinton, OH

Average snowfall days in May - Port Clinton, OH
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average sea temperature in May
Port Clinton, OH

Average sea temperature in May - Port Clinton, OH
  • Average sea temperature in May: 51.4°F

The best month for swimming (with the highest average sea temperature) is July (76.6°F).
The coldest month (with the lowest average sea temperature) is February (32.3°F).

Average daylight in May /
Average sunshine in May
Port Clinton, OH

Average daylight in May / Average sunshine in May - Port Clinton, OH
  • Average daylight in May: 14h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in May: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).

Average sunshine days in May
Port Clinton, OH

Average sunshine days in May - Port Clinton, OH
  • Average sunshine days in May: 11.8 days

The month with the most sunshine days is September (13.5 days).
The month with the least sunshine days is February (9 days).

Average UV index in May
Port Clinton, OH

Average UV index in May - Port Clinton, OH
  • Average UV index in May: 5

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in May
Port Clinton, OH

Average cloud cover in May - Port Clinton, OH
  • Average cloud cover in May: 40

The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 29).

Average visibility in May
Port Clinton, OH

Average visibility in May - Port Clinton, OH
  • Average visibility in May: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

Port Clinton, Ohio, USA

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