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Monday, July 7, 2025

Cayuga Lake Water Temperature by Month

Cayuga Lake Water Temperature by Month: A Complete Guide

Cayuga Lake, the longest of New York’s Finger Lakes, experiences wide temperature variations throughout the year due to its northern climate and considerable depth. Whether you're planning to swim, fish, kayak, or just visit, knowing the monthly water temperatures can help you make the most of your time at the lake.


Here’s a detailed look at Cayuga Lake’s water temperature patterns, month by month.



1. January

Water temperatures in January are at or near their coldest. The lake rarely freezes entirely due to its depth, but the surface in shallow areas, especially at the northern and southern ends, may ice over.


Typical Temperature: 34–37°F (1–3°C)


This month is not suitable for water activities, though it’s a beautiful time to enjoy winter scenery and lakeside hikes.



2. February

February continues the cold trend. Most of the lake remains just above freezing. Snowfall and ice cover are common along the shoreline and in shallower coves.


Typical Temperature: 33–37°F (1–3°C)


Like January, it’s a low-activity month for the water itself, but excellent for winter exploration around the lake.



3. March

As spring approaches, water temperatures begin to rise slowly. Ice begins to melt in shallow sections, but the lake is still very cold overall.


Typical Temperature: 34–38°F (1–3°C)


While still too cold for swimming, March marks the beginning of increased lake monitoring and early-season fishing.



4. April

April brings a noticeable warm-up, though the lake remains chilly. Surface temperatures can climb a bit more quickly on sunny days, especially near the shore.


Typical Temperature: 39–45°F (4–7°C)


Boating begins to return in earnest, but wetsuits are still required for any immersion.



5. May

By May, Cayuga Lake starts to feel more comfortable—especially for anglers and early-season paddlers. Shallow waters warm up faster than deeper areas.


Typical Temperature: 50–58°F (10–14°C)


Some brave swimmers may begin taking quick dips by late May, but most still find it too cold without a wetsuit.



6. June

June is the start of the true summer season. The surface layer of the lake warms rapidly under long days of sunshine.


Typical Temperature: 60–70°F (15–21°C)


Swimming becomes comfortable by mid to late June, especially in shallower parts. Kayaking, boating, and fishing are in full swing.



7. July

July usually brings the warmest water temperatures of the year. The surface is ideal for swimming and water sports.


Typical Temperature: 70–76°F (21–24°C)


This is peak season for recreational lake use. Deeper areas remain cool below the surface, making it ideal for fish like lake trout.



8. August

August continues the warm trend, though water temperatures may dip slightly by the end of the month as nights grow cooler.


Typical Temperature: 69–74°F (20–23°C)


Still an excellent month for swimming, paddling, and all kinds of lake adventures.



9. September

As fall approaches, water temperatures begin to drop, especially after the first few cool nights. The surface remains pleasant early in the month.


Typical Temperature: 62–70°F (17–21°C)


Swimming is still possible in early September, but most visitors begin to transition to fall fishing, hiking, and boating.



10. October

By October, Cayuga Lake starts cooling rapidly. Thermal mixing begins, where colder surface water starts blending with deeper layers.


Typical Temperature: 52–60°F (11–16°C)


Too cold for most swimmers, but still popular among anglers and boaters enjoying the fall foliage.



11. November

Water temperatures in November are cold once again, especially after the lake loses more surface heat. Winds and rain are frequent.


Typical Temperature: 44–50°F (7–10°C)


Lake use declines sharply, except for cold-weather anglers and hardy paddlers.



12. December

The lake approaches freezing by mid to late December. Icy patches may form again along the shoreline and in small bays.


Typical Temperature: 36–40°F (2–4°C)


Winter conditions return, and the lake prepares to repeat its seasonal cycle.




In Summary

Cayuga Lake’s water temperature fluctuates from near-freezing in winter to the low 70s in summer. Here’s a quick snapshot:


Month

Avg. Water Temp (°F)


January

34–37°F


February

33–37°F


March

34–38°F


April

39–45°F


May

50–58°F


June

60–70°F


July

70–76°F


August

69–74°F


September

62–70°F


October

52–60°F


November

44–50°F


December

36–40°F



Cayuga Lake offers a different experience each season. Whether you’re a swimmer, fisherman, or a photographer chasing seasonal color, understanding the lake’s water temperature by month helps you plan your visit for the best experience.

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