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 onset in Port Clinton is marked by a temperature increase, moving from a cool 51.8°F (11°C) in April to an enjoyable 63°F (17.2°C). Port Clinton's temperature lowers to a mean of 51.3°F (10.7°C) during the nights in May.

Humidity

In May, the average relative humidity 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 in Port Clinton. During 0.1 snowfall days, in May, Port Clinton aggregates 0.04" (1mm) of snow. Throughout the year, in Port Clinton, there are 48.2 snowfall days, and 11.89" (302mm) of snow is accumulated.

Ocean temperature

In May, the average ocean temperature in Port Clinton, Ohio, is 51.4°F (10.8°C).
Note: Caution: 51.4°F (10.8°C) temperatures below 50°F (10°C) during swimming can result in intense cold shock and quickened breathing.

Daylight

The average length of the day in May in Port Clinton, Ohio, 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

The average daily maximum UV index in May in Port Clinton is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 5 during May translates into the following directions:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Frequently asked questions

What is the average May temperature in Port Clinton?

In Port Clinton, in May, the average high-temperature is 63°F (17.2°C), and 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 in Port Clinton is 79%.

How much does it rain in Port Clinton in May?

In May, in Port Clinton, the rain falls for 18 days. Throughout May, 4.53" (115mm) of precipitation is accumulated.

What is the last month it snows in Port Clinton?

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

How cold is the water in May in Port Clinton?

In Port Clinton, in May, the average water temperature is 51.4°F (10.8°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the average length of the day in May in Port Clinton?

The average day length in May in Port Clinton, Ohio, is 14h and 32min.

When are sunrise and sunset in May in Port Clinton?

On the first day of May in Port Clinton, Ohio, 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 in Port Clinton?

In May, the average sunshine duration in Port Clinton is 8.9h.

What is the UV index intensity in May in Port Clinton?

In Port Clinton, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMayJJASOND
Apr
May
Jun
Average high temperature
51.8°F 11°C
63°F 17.2°C
72°F 22.2°C
Average low temperature
40.6°F 4.8°C
51.3°F 10.7°C
60.8°F 16°C
Average pressure
29.96" 761mmHg
29.98" 761mmHg
29.93" 760mmHg
Average wind speed
11mph 17.7km/h
9.2mph 14.8km/h
8.6mph 13.8km/h
Average max. wind speed
11.9mph 19.2km/h
9.9mph 15.9km/h
9.3mph 15km/h
Average wind speed gusts
19.7mph 31.7km/h
17mph 27.4km/h
15.5mph 24.9km/h
Average humidity
78%
79%
79%
Average rainfall
3.35" 85mm
4.53" 115mm
4.76" 121mm
Average rainfall days
16.3
18
17
Average snowfall
0.91" 23mm
0.04" 1mm
0" 0mm
Average snowfall days
1.7
0.1
0
Average sea temperature
40.5°F 4.7°C
51.4°F 10.8°C
66.8°F 19.3°C
Average daylight
13h 2min
14h 3min
15h 1min
Average sunshine
7h 1min
8h 5min
9h 5min
Average sunshine days
10.8
11.8
11.4
Average UV index
3
5
6
Average cloud cover
49%
40%
34%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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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).

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Port Clinton, Ohio, USA

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