Measurements:
°C
°F
Yellowknife
12°F
SW 9 mph
Feels like: 0°F
Precip: 0%
World Resorts Canada Yellowknife Weather

Yellowknife Sea Water Temperature

Current Sea Water Temperature:
+30.2°F
Maximum Sea Water Temperature in April: 32.2°F
Minimum Sea Water Temperature in April: 30.2°F
Average water temperature in April: 30.3°F

Sea Water Temperature for the Last 10 Days:

April 21 30.2°F April 16 30.2°F
April 20 30.2°F April 15 30.2°F
April 19 30.2°F April 14 30.2°F
April 18 30.2°F April 13 30.2°F
April 17 30.2°F April 12 30.2°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 -15.0 °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

24 Hours Weather Forecast
Yellowknife
Local time: 04:01
21 apr, tuesday
0600 6°F
SW
8 mph
0900 14°F
S
8 mph
1200 22°F
S
8 mph
1500 26°F
S
9 mph
1800 28°F
S
7 mph
2100 20°F
S
5 mph
22 apr, wednesday
0000 12°F
S
7 mph
0300 4°F
S
7 mph