Measurements:
°C
°F
Yosemite
48°F
W 7 mph
Feels like: 48°F
Precip: 0%
World Resorts USA Yosemite Weather

Yosemite Sea Water Temperature

Current Sea Water Temperature:
+44.0°F
Maximum Sea Water Temperature in December: 49.8°F
Minimum Sea Water Temperature in December: 37.6°F
Average water temperature in December: 43.9°F

Sea Water Temperature for the Last 10 Days:

December 14 44.0°F December 09 45.6°F
December 13 44.2°F December 08 45.8°F
December 12 44.6°F December 07 46.2°F
December 11 44.8°F December 06 46.2°F
December 10 45.2°F December 05 46.2°F

When is the Warmest Sea for Yosemite?

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

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Yosemite was 71.4°F. The maximum and minimum values were 70.4°F and 72.6°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Yosemite was 70.4°F. The maximum and minimum values were 67.4°F and 72.8°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Yosemite was 67.3°F. The maximum and minimum values were 63.0°F and 70.4°F respectively.

Best Time to Visit Yosemite
The most sunny months:
August 28 days
July 27 days
June 25 days
The most warm months:
July 75.6 °F
August 75.3 °F
September 67.6 °F
Warmest sea temperature:
August 69.4 °F
July 68.7 °F
September 65.4 °F
The most cold months:
February 34.0 °F
December 34.5 °F
January 34.9 °F
The most rainy months:
May 3 days
July 2 days
April 2 days
The most windy months:
June 7 mph
August 7 mph
July 6 mph

Yosemite on the Weather Map

USA Resorts:
NAME
Chicago -10
Hawaii +78
Honolulu +78
Houston +68
Las Vegas +50
Los Angeles +56
Maui +72
Miami +74
Miami Beach +78
New York +30
San Diego +56
San Francisco +46
Sarasota +64
Tampa +62
Washington +34
24 Hours Weather Forecast
Yosemite
Local time: 23:54
14 dec, sunday
0000 48°F
W
7 mph
0300 48°F
W
7 mph
0600 46°F
W
7 mph
0900 48°F
W
7 mph
1200 54°F
NE
4 mph
1500 54°F
NE
5 mph
1800 50°F
W
5 mph
2100 48°F
W
7 mph