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Crater Lake

Crater Lake Current Water Temperature and Forecast

On this page, you will find comprehensive information about the water temperature in Crater Lake, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Current Lake Water Temperature Information

9.8°C

TODAY

9.8°C

YESTERDAY

9.5°C

A WEEK AGO

As of today, the minimum water temperature in the Crater Lake ranges from 47°F (8°C) to 50°F (10°C). This is still cool water, suitable only for experienced swimmers or those accustomed to cold water. Swimming in such conditions is possible, but not recommended for prolonged periods. Extra caution should be taken during extended exposure, as the cold water can cause heat loss and lead to hypothermia. For added comfort, special clothing can be used.

It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Analysis, Historical Data, and Forecast of Water Temperature

Water Temperature Chart for Crater Lake Over the Last 30 Days

Today the water temperature in Crater Lake is lower than the same day in previous years. The water temperature range here in May is from 9°C to 21°C. The water temperature is trending upward, and it has increased both over the past 30 days and the past week.

The forecasted water temperature values for Crater Lake are presented in the table below.

The actual water temperature values near the shore may differ by a few degrees from the stated values. For the development of the forecast, we use our own mathematical model that takes into account the current water temperature changes, historical data, and key weather trends, including wind strength and direction, and air temperature in each specific region.

Daily Water Temperature Chart

Date	Current	Average	Forecast
May 6	9.5°C	15.0°C
May 7	9.0°C	15.0°C
May 8	9.4°C	15.0°C
May 9	9.5°C	15.0°C
May 10	9.7°C	15.0°C
May 11	9.8°C	15.0°C
May 12	9.8°C	15.0°C
May 13	9.8°C	15.0°C
May 14		15.0°C	10.1°C
May 15		15.0°C	10.4°C
May 16		15.0°C	10.7°C
May 17		15.0°C	11.0°C
May 18		15.0°C	11.3°C
May 19		15.0°C	11.5°C
May 20		15.0°C	11.7°C
May 21		15.0°C	11.9°C

* Current - Actual water temperature value

** Average - Average water temperature on this day in recent years

*** Forecast - Our water temperature forecast

Water Temperature Ranges in Crater Lake by Month

January

Minimum	Average	Maximum
0°C	1.7°C	4°C

February

Minimum	Average	Maximum
0°C	0.6°C	3°C

March

Minimum	Average	Maximum
1°C	4°C	7°C

April

Minimum	Average	Maximum
6°C	10.5°C	15°C

May

Minimum	Average	Maximum
9°C	15°C	21°C

June

Minimum	Average	Maximum
18°C	20.6°C	23°C

July

Minimum	Average	Maximum
21°C	23.3°C	26°C

August

Minimum	Average	Maximum
23°C	25°C	27°C

September

Minimum	Average	Maximum
18°C	20°C	22°C

October

Minimum	Average	Maximum
10°C	12.2°C	15°C

November

Minimum	Average	Maximum
4°C	6.7°C	9°C

December

Minimum	Average	Maximum
0°C	1.7°C	4°C

Monthly Water Temperature Histogram for Crater Lake

Crater Lake Weather

MAY 14

0°C / 7°C

slight snow fall

rain: 36% | wind: 12 km/h

MAY 15

-4°C / 11°C

overcast

rain: 2% | wind: 15 km/h

MAY 16

2°C / 14°C

overcast

rain: 12% | wind: 18 km/h

MAY 17

4°C / 13°C

light drizzle

rain: 26% | wind: 18 km/h

Water Temperature in Crater Lake: General Trends and Swimming Opportunities

Crater Lake is located in the state of Oregon, in the county of Klamath, at an elevation of 6177 feet (1883 meters) above sea level.

Crater Lake is a medium lake. Its surface area is 20.6 sq mi (53.5 sq km). Typically versatile lakes with developed ecosystems; popular for water sports and tourism.

The water temperature in Crater Lake varies throughout the year, ranging from 32°F (0°C) in January to 81°F (27°C) in August. The average annual water temperature of the lake is 54°F (12°C). The months when the average water temperature in Crater Lake exceeds 68 degrees Fahrenheit (20°C) are June, July, August and September.

Geographical Location of Crater Lake

Nearby Lakes

Frequently Asked Questions About Crater Lake and its Water Temperatures

What is the current water temperature in Crater Lake?

The water temperature today in Crater Lake is 50°F (9.8°C).

What is the water temperature in Crater Lake during the summer months?

The average water temperature in Crater Lake during the summer months is typically between 69°F to 77°F (21°C to 25°C), and it can reach up to 81°F (27°C) at its warmest. However, in some years, the temperature may exceed this range.

What is the water temperature in Crater Lake in May?

The average water temperature in Crater Lake in May ranges from 61°F to 70°F (16°C to 21°C).

What is the water temperature in Crater Lake in September?

The average water temperature in Crater Lake in September is typically between 64°F to 72°F (18°C to 22°C).

Where is Crater Lake located?

Crater Lake is located in the United States in the state of Oregon, in the county of Klamath, at an elevation of 6177 feet (1883 meters) above sea level. The surface area of the lake is 20.643 sq mi (53.46 sq km).

Is it possible to swim in Crater Lake and what are the possibilities for this?

Yes, it is possible to swim in Crater Lake, Oregon, but only from the shore at Cleetwood Cove or while boat touring during summer months due to its deep and cold waters.

What are the coordinates of Crater Lake?

Crater Lake is located at coordinates 42.9420°N 122.0990°W.

Is Lake Crater Lake a popular vacation spot among Americans?

Crater Lake enjoys local popularity among the residents of State Oregon, and nationally, it ranks in the top 10 percent of all lakes in the country.

What species of fish can be found in Crater Lake?

Crater Lake is home to fish species such as Rainbow trout (best caught in Spring, Fall).