Updated
Grand Marais Harbor
Bay
Cold water — serious cold-shock risk today
Cold waterCold water — serious cold-shock risk today: water temperature is 51°F, cold enough to cause cold-water shock on sudden immersion.
- Water temperature is 51°F, cold enough to cause cold-water shock on sudden immersion.
- Heavy rain today can raise bacteria levels near outfalls and river mouths.
Cold water — serious cold-shock risk today
Cold waterCold water — serious cold-shock risk today: water temperature is 51°F, cold enough to cause cold-water shock on sudden immersion.
- Water temperature is 51°F, cold enough to cause cold-water shock on sudden immersion. — NOAA buoy GDMM5, as of Aug 21, 7:18 PM UTC
- Heavy rain today can raise bacteria levels near outfalls and river mouths.
No official beach-advisory feed for Minnesota yet — follow posted signs and local guidance.
Live data from NOAA buoy GDMM5 (0.2 mi away), as of Aug 21, 7:18 PM UTC.
Weather at Grand Marais Harbor
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Frequently asked questions
- Where is Grand Marais Harbor?
- Grand Marais Harbor is a bay in Minnesota.
- What is the water temperature at Grand Marais Harbor?
- As of August 21, 2026, the water temperature at Grand Marais Harbor in Minnesota is 51°F (10°C), measured by NOAA buoy GDMM5, 0.2 miles away.
- Can you swim at Grand Marais Harbor?
- Cold water — serious cold-shock risk today: water temperature is 51°F, cold enough to cause cold-water shock on sudden immersion. Checked August 21, 2026.
- How is Grand Marais Harbor rated?
- Grand Marais Harbor in Minnesota has an average visitor rating of 4.9 out of 5, based on 8 reviews.
- What amenities does Grand Marais Harbor have?
- Visitor-listed amenities at Grand Marais Harbor include camping-nearby.
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Best Times to Visit
- ›Weekday mornings (8–10 AM) are typically less crowded
- ›Check the forecast 2–3 days ahead for best planning
- ›Avoid holiday weekends for a quieter experience
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