Measurements:
°C
°F
Yellowknife
-12°F
SE 13 mph
Feels like: -34°F
Precip: 79%
World Resorts Canada Yellowknife Weather

Yellowknife Sea Water Temperature

Current Sea Water Temperature:
+36.0°F
Maximum Sea Water Temperature in December: 36.4°F
Minimum Sea Water Temperature in December: 30.6°F
Average water temperature in December: 33.5°F

Sea Water Temperature for the Last 10 Days:

December 04 36.0°F November 29 36.2°F
December 03 36.0°F November 28 36.2°F
December 02 36.0°F November 27 36.4°F
December 01 36.0°F November 26 36.6°F
November 30 36.0°F November 25 36.6°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: 2025 2024 2023

The average sea surface temperature in August 2025 for Yellowknife was 60.7°F. The maximum and minimum values were 53.6°F and 65.6°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Yellowknife was 56.2°F. The maximum and minimum values were 52.6°F and 59.4°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Yellowknife was 58.2°F. The maximum and minimum values were 53.4°F and 64.8°F respectively.

Best Time to Visit Yellowknife
The most sunny months:
July 14 days
June 13 days
August 12 days
The most warm months:
July 69.3 °F
August 65.7 °F
June 61.4 °F
Warmest sea temperature:
August 61.3 °F
July 59.0 °F
September 55.0 °F
The most cold months:
January -15.3 °F
February -15.2 °F
December -12.0 °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

24 Hours Weather Forecast
Yellowknife
Local time: 23:12
05 dec, friday
0000 -12°F
SE
13 mph
0300 -18°F
SE
10 mph
0600 -22°F
SE
7 mph
0900 -26°F
SE
6 mph
1200 -26°F
SE
6 mph
1500 -26°F
S
5 mph
1800 -30°F
S
6 mph
2100 -30°F
S
6 mph