Measurements:
°C
°F
CURRENT WEATHER
13:18
Duluth
76°F
NE 6 mph
Feels like: 78°F
Precip: 1%
World Resorts USA Duluth Weather

14 Day Weather Forecast

08.05
wed
DAY
76°F
NE 6 mph
precip
1%
NIGHT
62°F
NE 6 mph
precip
4%
08.06
thu
DAY
86°F
NE 13 mph
precip
1%
NIGHT
62°F
NE 4 mph
precip
19%
08.07
fri
DAY
80°F
E 5 mph
precip
4%
NIGHT
60°F
SE 3 mph
precip
5%
08.08
sat
DAY
78°F
NW 4 mph
precip
4%
NIGHT
58°F
S 6 mph
precip
14%
08.09
sun
DAY
78°F
S 4 mph
precip
1%
NIGHT
58°F
S 5 mph
precip
4%
08.10
mon
DAY
74°F
S 4 mph
precip
1%
NIGHT
60°F
NE 4 mph
precip
7%
08.11
tue
DAY
74°F
SE 4 mph
precip
9%
NIGHT
58°F
N 2 mph
precip
5%
08.12
wed
DAY
80°F
SE 7 mph
precip
1%
NIGHT
60°F
NW 6 mph
precip
4%
08.13
thu
DAY
64°F
W 11 mph
precip
2%
NIGHT
56°F
W 5 mph
precip
7%
08.14
fri
DAY
60°F
W 6 mph
precip
18%
NIGHT
54°F
SW 3 mph
precip
22%
08.15
sat
DAY
70°F
NW 5 mph
precip
4%
NIGHT
60°F
W 3 mph
precip
12%
08.16
sun
DAY
72°F
NE 6 mph
precip
8%
NIGHT
62°F
N 3 mph
precip
13%
08.17
mon
DAY
76°F
NE 7 mph
precip
21%
NIGHT
64°F
NW 9 mph
precip
11%
08.18
tue
DAY
72°F
W 12 mph
precip
3%
NIGHT
62°F
SW 9 mph
precip
8%

Duluth Sea Water Temperature in August, °F

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Duluth was 69.4°F. The maximum and minimum values were 64.0°F and 73.4°F respectively.

Duluth on the Weather Map

Best Time to Visit Duluth
The most sunny months:
September 14 days
July 13 days
August 13 days
The most warm months:
July 77.5 °F
August 76.5 °F
June 69.8 °F
Warmest sea temperature:
August 67.6 °F
July 65.5 °F
September 63.7 °F
The most cold months:
January 14.4 °F
February 16.7 °F
December 21.4 °F
The most rainy months:
August 3 days
July 3 days
June 2 days
The most windy months:
April 9 mph
March 8 mph
November 8 mph
more details
USA Resorts:
NAME
F°
Boston +94
Chicago +82
Hawaii +82
Houston +102
Las Vegas +124
Los Angeles +92
Maui +78
Miami +92
Myrtle Beach +84
New York +84
San Diego +80
San Francisco +62
Santa Monica +80
Sarasota +92
Washington +88
all resorts
24 Hours Weather Forecast
Duluth
Local time: 13:18
05 aug, wednesday
1500 82°F
NE
7 mph
1800 86°F
NE
9 mph
2100 74°F
NE
4 mph
06 aug, thursday
0000 62°F
NE
6 mph
0300 56°F
NE
5 mph
0600 56°F
NE
6 mph
0900 72°F
NE
11 mph
1200 86°F
NE
13 mph