Updated
Green Bay
Bay
Use caution — an official advisory is in effect
Use cautionUse caution — an official advisory is in effect: water temperature is 70°F, cool enough to cause cold-water shock on a sudden entry.
- Water temperature is 70°F, cool enough to cause cold-water shock on a sudden entry.
- A Small Craft Advisory is in effect for Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to… and other areas.
arm of Lake Michigan in Wisconsin and Michigan in the United States
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Use caution — an official advisory is in effect
Use cautionUse caution — an official advisory is in effect: water temperature is 70°F, cool enough to cause cold-water shock on a sudden entry.
- Water temperature is 70°F, cool enough to cause cold-water shock on a sudden entry. — NOAA buoy MNMM4, as of Aug 22, 11:48 PM UTC
- A Small Craft Advisory is in effect for Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to… and other areas. — NWS Green Bay WI
No official beach-advisory feed for Wisconsin yet — follow posted signs and local guidance.
Live data from NOAA buoy MNMM4 (7.8 mi away), as of Aug 22, 11:48 PM UTC.
Weather at Green Bay
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Frequently asked questions
- Where is Green Bay?
- Green Bay is a bay in Wisconsin.
- What is the water temperature at Green Bay?
- As of August 22, 2026, the water temperature at Green Bay in Wisconsin is 70°F (21°C), measured by NOAA buoy MNMM4, 7.8 miles away.
- Can you swim at Green Bay?
- Use caution — an official advisory is in effect: water temperature is 70°F, cool enough to cause cold-water shock on a sudden entry. Checked August 22, 2026.
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Best Times to Visit
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Location & Contact
Wisconsin
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