Measurements:
°C
°F
Rocky Harbour
42°F
NE 7 mph
Feels like: 36°F
Precip: 75%
World Resorts Canada Rocky Harbour Weather

Rocky Harbour Sea Water Temperature

Current Sea Water Temperature:
+36.4°F
Maximum Sea Water Temperature in May: 45.0°F
Minimum Sea Water Temperature in May: 32.0°F
Average water temperature in May: 38.4°F

Sea Water Temperature for the Last 10 Days:

May 09 36.4°F May 04 34.2°F
May 08 36.4°F May 03 34.8°F
May 07 37.2°F May 02 35.2°F
May 06 35.2°F May 01 33.8°F
May 05 34.4°F April 30 35.4°F

When is the Warmest Sea for Rocky Harbour?

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

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 Rocky Harbour was 64.6°F. The maximum and minimum values were 61.8°F and 69.0°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Rocky Harbour was 62.0°F. The maximum and minimum values were 58.8°F and 64.8°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Rocky Harbour was 60.5°F. The maximum and minimum values were 50.8°F and 64.4°F respectively.

Best Time to Visit Rocky Harbour
The most sunny months:
August 6 days
June 5 days
May 5 days
The most warm months:
July 68.8 °F
August 68.6 °F
June 62.0 °F
Warmest sea temperature:
August 66.1 °F
September 61.7 °F
July 60.8 °F
The most cold months:
February 19.7 °F
January 21.3 °F
March 25.3 °F
The most rainy months:
November 6 days
July 5 days
June 5 days
The most windy months:
December 9 mph
March 9 mph
January 9 mph

Rocky Harbour on the Weather Map

24 Hours Weather Forecast
Rocky Harbour
Local time: 09:10
09 may, saturday
1200 46°F
NE
11 mph
1500 46°F
NE
9 mph
1800 44°F
NE
8 mph
2100 36°F
N
5 mph
10 may, sunday
0000 34°F
NW
5 mph
0300 32°F
NW
6 mph
0600 36°F
NW
7 mph
0900 48°F
NW
9 mph