World Resorts USA Port Clinton Weather

Port Clinton sea water temperature

Current sea water temperature:
+37.9°F
Minimum sea water temperature in March: 47.3°F
Maximum sea water temperature in March: 33.8°F
Average sea water temperature in March: 38.7°F

Sea water temperature for the last 10 days:

March 18 37.9°F March 13 40.1°F
March 17 37.4°F March 12 36.7°F
March 16 37.6°F March 11 36.7°F
March 15 39.6°F March 10 37.0°F
March 14 40.3°F March 9 36.1°F

When is the warmest sea in Port Clinton?

Based on the data about daily sea water temperature for the last three years the warmest sea in Port Clinton was noticed in July, August and September.

Monthly Sea Temperatures in Port Clinton, °F

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 80.7°F. The highest and lowest sea temperatures during the month were 82.6°F and 78.4°F.

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 76.6°F. The highest and lowest sea temperatures during the month were 81.5°F and 68.9°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 70.8°F. The highest and lowest sea temperatures during the month were 73.0°F and 67.8°F.

Best time for vacation in Port Clinton

Sunniest months:
September 16 days
August 14 days
October 14 days
Warmest months:
July 78.7 °F
August 77.3 °F
June 74.4 °F
Warmest sea temp:
July 78.0 °F
August 77.1 °F
September 71.7 °F
Coldest months:
January 30.1 °F
February 32.3 °F
December 36.8 °F
Rainiest months:
July 4 days
April 3 days
May 3 days
Windiest months:
March 12.6 mph
November 12.5 mph
December 12.2 mph

Port Clinton on a weather map

Port Clinton
+34°F
NE 15 mph
Feels like: +25°F
Precip.: 0%
Places in USA:
Name
°F
+45°F
+75°F
+75°F
+99°F
+93°F
+66°F
+72°F
+72°F
+37°F
+70°F
+86°F
+72°F
+66°F
+73°F
+39°F
24 Hours Forecast
Port Clinton
Local time: 17:35
March 18, wednesday
1800
34°F
NE
15 mph
2100
34°F
N
12 mph
March 19, thursday
0000
34°F
N
12 mph
0300
32°F
NE
12 mph
0600
30°F
NE
11 mph
0900
34°F
E
5 mph
1200
39°F
E
6 mph
1500
41°F
SE
6 mph
Units of measurement: °C / °F