The Water Temperature Guide to Trout Fishing in California Lakes

With vast areas of the country present in the holds of an endless warmth wave, incalculable cool streaming freestone trout streams have transformed into something different. The vast majority of anglers realize that when trout lakes and rivers get too warm, the trolling for trout goes downhill quickly. Fish are either mysteriously gone or aren’t effectively taking care of.

For streams that ride the halfway point between the temperatures at which trout flourish and those where they endure, it’s conceivable to discover fish that are effectively feeding. The difficulty for some anglers can be figuring out where to take a stand. With regards to trout, how hot is excessively hot? Likewise, how cold is too cold?

Some anglers will show you the water temperature, or you can purchase water temperature or profundity measures that connect to your fishing line or you lower into the water. You can likewise utilize a modest thermometer, mind the web or visit with other anglers. In this blog, we will share the water temperature guide to catching trout in California lakes.

What Water Temperature Means for Trout

Cal Kellog of Fish Hunt Shoot Productions shared his knowledge about the importance of water temperature in trout trolling. He relates the temperature to his fishing strategy. If the lake is 66-degrees or less on the surface, it is safe to assume that there are Rainbow trouts right on top. Trouts move up or down the lake depending on water temperature. To know more about these things, watch the Fish Hunt Shoot Productions Youtube video.

As water temperature rises, the measure of diffused oxygen in the water diminishes. Similarly, as the water temperature decreases, the extent of dissolved oxygen increments. This appears to be straightforward, correct? In any case, at what temperature should fishing be checked to guarantee trout endurance? The real temperature shifts from species to species.

Trolling for Trout: Water Temperature Guide

There are various types of trout that you can get, such as rainbow trout, lake trout, brook trout, brown trout. Here are a few trout fishing tips to get each kind of fish species. 

1. Rainbow Trout

As the most widely recognized and least demanding trout types to get in California, Rainbow trout are discovered both supplied and wild in lakes and rivers. According to Cal Kellog, all trout have the same temperature requirement. However, focusing on rainbow trout, the most comfortable range is 54 to 56 degrees. 

Still, they are cozy up to 65 to 66 degrees. If the water temperature proceeds to rise and gets in the 75 to 77-degree range for an all-encompassing period, it tends to be deadly for Rainbow trout.

2. Brown Trout

Like the Rainbow trout, Brown trout’s ideal feeding and development water temperatures are 44 to 67 degrees. When the water temperature hits 68 degrees, they will start to get distressed. If the water temperature proceeds to rise and gets in the 75 to 77-degree range for an all-inclusive period, it very well may be deadly for Brown Trout. 

Studies have indicated that if the water temperature goes up to 80 degrees, these two species can endure if the water temperature doesn’t remain at these temperatures for more than 24 to 48 hours.

3. Lake Trout

The ideal opportunity to look for Lake trout relies upon factors like climate. These fish like to evade brilliant light, so the best chance to fish them is ordinarily in cloudy or low light conditions. Not exclusively do lake trout incline toward these conditions. They likewise feed all the more now and again during these occasions. 

Above all is discovering waterways with which lake trout occupy, as they have such specific living spaces and not everything lakes can uphold them. Searching out the profound water zones of these lakes is a great spot to begin. 

In the spring, following ice-out can be an incredible time for anglers to seek after lake trout. With the colder water temperature, you can catch these fish in the moderately shallow. Lake trout flourish at least 40-degrees to an optimum of 50 to 59-degrees.

4. Brook Trout

Brook Trout need more oxygen or a lower water temperature than brown and rainbow trouts. Studies shift on the deadly water temperature that will make a Brook Trout pass on. The ideal feeding temperatures for Brook Trout fluctuate from 44 degrees to 64 degrees. The weather that a Brook Trout starts to pressure at is 65, and the water temperature at which could be deadly to Brook Trout is 70 degrees.

Likewise, Brook trout endure more extensive pH levels than Brown Trout or Rainbow Trout, from the shallow degree of 3.5 to a high of 9.8 in the laboratory examinations. In normal conditions, a more sensible reach is somewhere in the range of 6.5 and 8.0.

Best Time of the Year for Trout Fishing

The ideal opportunity to look for trout will rely upon the season, time, and temperature. Trout is open all year as equivalent to freshwater fishing. However, to build your odds of progress, follow these trout fishing tips: 

  • Conventional thinking proposes that pre-summer is an ideal time to get trout, particularly if you’re searching for bigger fish. 
  • The hotter it gets, the real fishing pressure from different fishers, the thicker the grass and brush encompassing their environments, and the lower the water levels. 
  • Even though a few viewed it as a fantasy, the trout could be more taught on staying away from draws and lure later in the season. 
  • Suppose the air temperature is disagreeable for you. In that case, it will be uncomfortable for the trout too. Trouts are not like humans. Their internal heat levels mirror the temperature of the water they swim in.

Best Time of the Day for Trout Trolling

As indicated by trout fishing and behavior experts, the main variables to consider when looking for trout are the water temperature and overcast cover. Here are some tips:

  • Trout are most effectively taking care of in agreeable water temperatures somewhere in the range of 34 and 67 degrees Fahrenheit. 
  • Trout feeding gets similarly as the water temperature transcends 40, 45, and 49 degrees Fahrenheit, so consistently taking the water temperature is valuable. 
  • Since trout don’t have eyelids and can’t widen their students, they should look for concealing in the outrageous sun to dodge brilliant lights. If conceivable, fish under overcast cover when water temperatures are colder or search for obscure zones where you can unobtrusively swim in with rain boots. 
  • People expect to see anglers fishing just before nightfall until dim, or much under a full moon, wanting to get more fish the more obscure it is. 
  • In the late spring, if water temperatures ascend into the high 60s, increment your odds of achievement by moving upstream to calmer waters.

What Should Anglers Do When Temperature Rises

You might be considering how you can deal with a stay on the water while being aware of the likely dangers for trout. When trout fishing in California, here are some things you can do:

1. Utilize a Thermometer

A stream thermometer is a useful device for looking for trout. It could reveal to you where the fish are holding, how they are taking care of, and when you ought to change from a freestone fishery to a tailwater fishery, most likely.

Having a stream thermometer will help guarantee that you don’t fish in water that is over 67 degrees. The Scout-a-Bout Fishing Thermometer is a good inclusion in your trout fishing setup. You can append it to your number one humdinger. Stream thermometers can likewise be utilized all year to discover prime feeding on water and help time different portals.

When you are fishing a stream that gets warm and fails to remember your stream thermometer, get in a raised position and watch the trout in the run. When fish are holding in one spot, opening and shutting their mouths, they are in distress. You may believe they are feeding. However, they are not; they attempt to flow more water around their gills to get more disintegrated oxygen.

2. Land Trout Swiftly

Swiftly landing a trout is a decent practice. However, it is extra significant when water temperatures rise. Quickly getting fish to the net will help decrease the measure of pressure they experience. Exaggerating a fish in warm water is a surefire approach to slaughter a trout.

To help land fish snappier, go up a tippet size, for example, utilizing 3x or 4x when you’d typically use 5x. For dry fly fishing, angler experts suggest using the Scientific Anglers Absolute Trout Stealth Tippet. Measuring down on a tippet may somewhat decrease the number of takes you get. Yet, it will help guarantee you can land fish rapidly and send them back on their way. 

Having a more extended handle net can likewise help with landing and delivering fish rapidly and securely. The Fishpond Nomad Mid-Length Net is an outstanding all-around choice for anglers.

3. Go Trout Trolling Early

Most anglers fish early in the morning. Notwithstanding, it is extra critical to begin extra right on time during sweltering mid-year months to amplify your experience on the water. Getting off the water before the pinnacle warmth of the day can help lessen the pressure that calculating puts on a fish. When there’s a danger of high water temperatures, you should try to get off the water around noon. This likewise leaves a lot of time for other summer exercises. 

4. Look for Cool Water Lakes

High lakes and boondocks streams will often remain in the protected zone, under 65 degrees Fahrenheit water temperatures, all through the mid-year on account of being fed by the last liquefying snowpack. Not exclusively will this assistance guarantee you don’t execute trout from fatigue. However, you’ll be ensured to take in some great perspectives en route. 

Some lakes you can visit in California are:

  • Lake Tahoe 
  • Cathedral Lake
  • Gaylor Lake
  • Lake Ediza
  • Eagle Lake
  • Heart Lake
  • Lake Magnet
  • Boiling Springs Lake
  • Manzanita Lake
  • Shasta Lake

5. Discover New Trout

Summer is a superb chance to pursue warm water species like carp, bass, and an assortment of sunfish like crappie and bluegill. These fish are each of an impact to seek after on the fly. These species present new difficulties and permit you to differ your strategies. 

The most fantastic aspect of all, many of them can be discovered pretty much anyplace in the country. With a tad of examination, you’re probably going to find incredible fishing near and dear. Tossing poppers to energetic lake fish is an excellent method to pass any warm summer day.

6. Take a Break

With everything taken into account, it’s straightforward. Suppose the water temperatures are more than 65 degrees Fahrenheit. In that case, it’s ideal for getting together your trout stuff to hit the high nation, seek after different species, or accept a chance to appreciate other recreational activities.

Check accessible waterway reports, counsel your nearby fly shop, and take the water temperature with a thermometer if there’s consistently an uncertainty about water temperatures being excessively high. Indeed, we love to get trout all year. Yet, at times, we need to do our part and offer the trout a reprieve.

Trout Fishing in California

Legitimate trout fishing season is the last Saturday in April through November 15 consistently. In 2021, Opening Day, otherwise known as “Fishmas,” is Saturday, April 24. This is when most Mono County waters are available to anglers to look for as numerous as five trout to catch-and-keep each day. Don’t forget to obtain a fishing license. Famous waters where these guidelines apply incorporate Convict Lake, Crowley Lake, June Lake Loop waters,  the Bridgeport Reservoir, and the Mammoth Lakes Basin.


Trout fishing is both a game and science. Various types of trout dwell across multiple living spaces with fluctuating ideal occasions for fishing. Hence, anglers should always consider the lake’s water temperature to catch trout successfully. Even though fishing is pleasant, earlier preparation and exploration will prompt a more effective excursion.

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