Measurements:
°C
°F
Nanaimo
60°F
SE 3 mph
Feels like: 60°F
Precip: 0%
World Resorts Canada Nanaimo Weather

Nanaimo Sea Water Temperature

Current Sea Water Temperature:
+49.2°F
Maximum Sea Water Temperature in April: 53.2°F
Minimum Sea Water Temperature in April: 45.6°F
Average water temperature in April: 48.6°F

Sea Water Temperature for the Last 10 Days:

April 19 49.2°F April 14 50.0°F
April 18 48.6°F April 13 50.4°F
April 17 49.2°F April 12 49.8°F
April 16 49.2°F April 11 49.2°F
April 15 49.6°F April 10 48.8°F

When is the Warmest Sea for Nanaimo?

According to our data for the last three years for Nanaimo 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 Nanaimo was 66.3°F. The maximum and minimum values were 61.2°F and 69.4°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Nanaimo was 66.5°F. The maximum and minimum values were 62.0°F and 71.6°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Nanaimo was 63.1°F. The maximum and minimum values were 58.2°F and 67.6°F respectively.

Best Time to Visit Nanaimo
The most sunny months:
July 21 days
August 18 days
September 14 days
The most warm months:
August 71.4 °F
July 71.1 °F
September 66.3 °F
Warmest sea temperature:
August 67.4 °F
July 66.9 °F
September 62.0 °F
The most cold months:
December 40.8 °F
January 40.9 °F
February 40.9 °F
The most rainy months:
January 9 days
November 8 days
October 6 days
The most windy months:
March 6 mph
December 6 mph
April 6 mph

Nanaimo on the Weather Map

24 Hours Weather Forecast
Nanaimo
Local time: 08:22
19 apr, sunday
0900 60°F
SE
3 mph
1200 70°F
S
3 mph
1500 68°F
S
4 mph
1800 62°F
SE
3 mph
2100 54°F
E
6 mph
20 apr, monday
0000 52°F
E
5 mph
0300 50°F
E
4 mph
0600 48°F
E
4 mph