Measurements:
°C
°F
Yellowknife
38°F
NW 6 mph
Feels like: 34°F
Precip: 8%
World Resorts Canada Yellowknife Weather

Yellowknife Sea Water Temperature

Current Sea Water Temperature:
+48.6°F
Maximum Sea Water Temperature in September: 64.8°F
Minimum Sea Water Temperature in September: 48.0°F
Average water temperature in September: 54.7°F

Sea Water Temperature for the Last 10 Days:

September 28 48.6°F September 23 50.0°F
September 27 49.2°F September 22 49.4°F
September 26 49.4°F September 21 48.0°F
September 25 50.2°F September 20 49.0°F
September 24 49.6°F September 19 49.6°F

When is the Warmest Sea for Yellowknife?

According to our data for the last three years for Yellowknife the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Yellowknife was 55.9°F. The maximum and minimum values were 52.8°F and 62.8°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Yellowknife was 60.9°F. The maximum and minimum values were 51.0°F and 68.0°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Yellowknife was 52.7°F. The maximum and minimum values were 48.0°F and 57.6°F respectively.

Best Time to Visit Yellowknife
The most sunny months:
June 14 days
July 14 days
August 11 days
The most warm months:
July 69.4 °F
August 65.5 °F
June 62.1 °F
Warmest sea temperature:
August 60.5 °F
July 59.3 °F
September 54.6 °F
The most cold months:
January -15.3 °F
February -15.0 °F
December -13.2 °F
The most rainy months:
June 1 day
July 1 day
August 1 day
The most windy months:
October 10 mph
May 9 mph
September 9 mph

Yellowknife on the Weather Map

Canada Resorts:
NAME
F°
Halifax +56
Moncton +52
Montreal +52
Nanaimo +54
Niagara Falls +64
Ottawa +54
Prince Edward Island +54
Quebec +50
Saint Andrews +56
St. John's +40
Sydney +52
Toronto +72
Vancouver +58
Victoria +56
Winnipeg +52
24 Hours Weather Forecast
Yellowknife
Local time: 16:36
28 sep, monday
1800 38°F
NW
6 mph
2100 32°F
W
8 mph
29 sep, tuesday
0000 30°F
W
11 mph
0300 30°F
W
11 mph
0600 30°F
SW
11 mph
0900 30°F
SW
13 mph
1200 32°F
SW
11 mph
1500 36°F
SW
9 mph