Clear Lake (California)

Reservoir Largest natural freshwater lake in California

California’s Clear Lake, the state’s largest natural freshwater lake, draws anglers, boaters and winery visitors; its shoreline supports fishing, birdwatching and summer lake recreation.

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Clear Lake is a large natural freshwater lake in Lake County in Northern California and is the largest natural freshwater lake located entirely within the state. The lake is a long-standing regional center for water recreation.

The lake is popular for boating, sport fishing-particularly largemouth bass-and waterside camping and birdwatching. Shoreline towns provide marinas, boat launches, and visitor services for recreational use.

The basin has been inhabited for millennia by indigenous peoples and later developed in the 19th and 20th centuries for settlement, recreation, and agriculture around the lake. It has continued as a regional recreational resource.

Clear Lake is in Lake County in Northern California, north of the San Francisco Bay Area, surrounded by volcanic highlands and rural landscapes; Lakeport and Clearlake lie on its shores.

  • Size and recreation: Recognised as the largest natural freshwater lake entirely within California, it supports boating, sport fishing, and lakeside communities.
  • Towns: Principal towns on its shores include Lakeport and Clearlake, which serve as access and service points for visitors.
Clear Lake (California)
Clear Lake, Lake County, California, USA
39.0408, -122.8006
Park access generally dawn-dusk; boat ramps vary by site
State park entry fees may apply (varies by county)

How to Get to Clear Lake (California) #

Clear Lake is about 120 miles (200 km) north of San Francisco. Drive north on I-5 and US-101, or take I-80 east to CA-20; the lake is best accessed by car. Major towns on the shore include Lakeport and Clearlake.

Tips for Visiting Clear Lake (California) #

  • Explore the shoreline at evening for the best light and calmer water; local anglers prize the bays at dawn.
  • Check local fishing regulations before casting - Clear Lake is an important recreational fishery with species-specific rules.

Best Time to Visit Clear Lake (California) #

Summer for boating and warm weather; spring and fall for quieter shoreline exploration and birdwatching.

Summer
Jun-Aug · 20-35°C
Warm, recreational boating season; busiest time.
Spring/Fall
Apr-May, Sep-Oct · 10-25°C
Milder temperatures and fewer tourists; good for wildlife and hikes.

Weather & Climate near Clear Lake (California) #

Climate

Clear Lake (California)'s climate is classified as Hot-Summer Mediterranean - Hot-Summer Mediterranean climate with warm summers (peaking in August) and cold winters (coldest in January). Temperatures range from 1°C to 32°C. Moderate rainfall (751 mm/year) with a pronounced dry season.

Temperature & Rainfall
Temperature Range
32°
Warmest Month
Coldest Month
Monthly Conditions

January

January is the coolest month with highs of 12°C and lows of 1°C. The wettest month with heavy rain (159 mm).

Comfort

Feels Like Cold
C
Temperature
12°

Weather

159 mm
Rainfall
2.4 m/s
Wind
Calm

February

February is cold with highs of 14°C and lows of 2°C. Significant rainfall (122 mm).

Comfort

Feels Like Cold
C
Temperature
14°

Weather

122 mm
Rainfall
2.7 m/s
Wind
Calm

March

March is cold with highs of 16°C and lows of 3°C. Significant rainfall (102 mm).

Comfort

10°
Feels Like Cold
10°C
Temperature
16°

Weather

102 mm
Rainfall
3.1 m/s
Wind
Light Breeze

April

April is cool with highs of 19°C and lows of 5°C. Moderate rainfall (40 mm).

Comfort

12°
Feels Like Cool
12°C
Temperature
19°

Weather

40 mm
Rainfall
3.2 m/s
Wind
Light Breeze

May

May is cool with highs of 23°C and lows of 8°C. Light rainfall.

Comfort

15°
Feels Like Cool
15°C
Temperature
23°

Weather

12 mm
Rainfall
3.4 m/s
Wind
Light Breeze

June

June is mild with highs of 27°C and lows of 10°C. Almost no rain.

Comfort

19°
Feels Like Mild
19°C
Temperature
11° 27°

Weather

5 mm
Rainfall
3.5 m/s
Wind
Light Breeze

July

July is mild with highs of 32°C and lows of 13°C. The driest month with just 1 mm.

Comfort

22°
Feels Like Mild
22°C
Temperature
13° 32°

Weather

1 mm
Rainfall
3.0 m/s
Wind
Light Breeze

August

August is the warmest month with highs of 32°C and lows of 13°C. Almost no rain.

Comfort

23°
Feels Like Mild
23°C
Temperature
13° 32°

Weather

4 mm
Rainfall
2.7 m/s
Wind
Calm

September

September is mild with highs of 29°C and lows of 11°C. Light rainfall.

Comfort

20°
Feels Like Mild
20°C
Temperature
11° 29°

Weather

12 mm
Rainfall
2.4 m/s
Wind
Calm

October

October is cool with highs of 24°C and lows of 8°C. Moderate rainfall (44 mm).

Comfort

16°
Feels Like Cool
16°C
Temperature
24°

Weather

44 mm
Rainfall
2.2 m/s
Wind
Calm

November

November is cool with highs of 17°C and lows of 4°C. Significant rainfall (118 mm).

Comfort

11°
Feels Like Cool
11°C
Temperature
17°

Weather

118 mm
Rainfall
2.2 m/s
Wind
Calm

December

December is cold with highs of 13°C and lows of 2°C. Significant rainfall (132 mm).

Comfort

Feels Like Cold
C
Temperature
13°

Weather

132 mm
Rainfall
2.2 m/s
Wind
Calm

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