Measurements:
°C
°F
Nanaimo
72°F
W 3 mph
Feels like: 72°F
Precip: 15%
World Resorts Canada Nanaimo Weather

Nanaimo Sea Water Temperature

Current Sea Water Temperature:
+65.6°F
Maximum Sea Water Temperature in August: 74.6°F
Minimum Sea Water Temperature in August: 61.2°F
Average water temperature in August: 67.3°F

Sea Water Temperature for the Last 10 Days:

August 19 65.6°F August 14 67.0°F
August 18 63.6°F August 13 67.8°F
August 17 64.4°F August 12 67.2°F
August 16 65.8°F August 11 66.0°F
August 15 66.6°F August 10 67.4°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: 2026 2025 2024

The average sea surface temperature in August 2026 for Nanaimo was 66.1°F. The maximum and minimum values were 63.6°F and 67.8°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Nanaimo was 64.8°F. The maximum and minimum values were 60.0°F and 70.0°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:
July 72.0 °F
August 71.4 °F
September 66.3 °F
Warmest sea temperature:
August 67.4 °F
July 66.6 °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
November 6 mph

Nanaimo on the Weather Map

24 Hours Weather Forecast
Nanaimo
Local time: 08:34
19 aug, wednesday
0900 72°F
W
3 mph
1200 80°F
SW
5 mph
1500 70°F
W
4 mph
1800 70°F
SW
1 mph
2100 64°F
E
2 mph
20 aug, thursday
0000 64°F
NE
2 mph
0300 60°F
E
2 mph
0600 60°F
E
2 mph