Measurements:
°C
°F
Oshkosh
66°F
NE 17 mph
Feels like: 66°F
Precip: 86%
World Resorts USA Oshkosh Weather

Oshkosh Sea Water Temperature

Current Sea Water Temperature:
+71.8°F
Maximum Sea Water Temperature in September: 79.4°F
Minimum Sea Water Temperature in September: 63.2°F
Average water temperature in September: 71.8°F

Sea Water Temperature for the Last 10 Days:

September 15 71.8°F September 10 76.4°F
September 14 73.6°F September 09 77.2°F
September 13 75.0°F September 08 76.8°F
September 12 75.6°F September 07 77.4°F
September 11 76.0°F September 06 76.8°F

When is the Warmest Sea for Oshkosh?

According to our data for the last three years for Oshkosh the highest average sea water temperature was in July, August and June.

Average Water Temperature by Month, °F

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Oshkosh was 80.6°F. The maximum and minimum values were 76.8°F and 85.4°F respectively.

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Oshkosh was 77.5°F. The maximum and minimum values were 73.8°F and 79.4°F respectively.

Sea Water Temperature in June

Select Year: 2026 2025 2024

The average sea surface temperature in June 2026 for Oshkosh was 73.1°F. The maximum and minimum values were 70.0°F and 76.8°F respectively.

Best Time to Visit Oshkosh
The most sunny months:
August 15 days
July 14 days
September 13 days
The most warm months:
July 81.4 °F
August 79.5 °F
June 76.0 °F
Warmest sea temperature:
July 78.8 °F
August 77.6 °F
June 72.3 °F
The most cold months:
January 20.6 °F
February 23.8 °F
December 28.0 °F
The most rainy months:
June 3 days
July 2 days
May 2 days
The most windy months:
November 12 mph
April 12 mph
October 11 mph

Oshkosh on the Weather Map

USA Resorts:
NAME
Boston +62
Chicago +66
Hawaii +80
Las Vegas +80
Los Angeles +72
Maui +66
Miami +88
Myrtle Beach +78
New York +66
Panama City Beach +90
San Diego +70
San Francisco +60
Santa Monica +70
Sarasota +86
Washington +66
24 Hours Weather Forecast
Oshkosh
Local time: 09:32
15 sep, tuesday
1200 70°F
E
15 mph
1500 76°F
E
14 mph
1800 70°F
SE
11 mph
2100 68°F
E
7 mph
16 sep, wednesday
0000 64°F
SE
8 mph
0300 60°F
SW
11 mph
0600 58°F
SW
11 mph
0900 60°F
SW
9 mph