Measurements:
°C
°F
Yellowknife
60°F
S 15 mph
Feels like: 56°F
Precip: 7%
World Resorts Canada Yellowknife Weather

Yellowknife Sea Water Temperature

Current Sea Water Temperature:
+52.8°F
Maximum Sea Water Temperature in August: 67.8°F
Minimum Sea Water Temperature in August: 52.8°F
Average water temperature in August: 60.8°F

Sea Water Temperature for the Last 10 Days:

August 19 52.8°F August 14 54.6°F
August 18 53.6°F August 13 57.2°F
August 17 53.8°F August 12 57.0°F
August 16 55.4°F August 11 54.8°F
August 15 54.2°F August 10 57.4°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 56.2°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: 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:
June 14 days
July 14 days
August 12 days
The most warm months:
July 69.4 °F
August 65.7 °F
June 62.1 °F
Warmest sea temperature:
August 61.3 °F
July 59.3 °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: 08:16
19 aug, wednesday
0900 60°F
S
15 mph
1200 66°F
SE
17 mph
1500 68°F
SE
17 mph
1800 66°F
SE
14 mph
2100 56°F
SE
16 mph
20 aug, thursday
0000 50°F
SE
11 mph
0300 50°F
E
6 mph
0600 50°F
E
6 mph