Measurements:
°C
°F
Moncton
70°F
W 2 mph
Feels like: 70°F
Precip: 72%
World Resorts Canada Moncton Weather

Moncton Sea Water Temperature

Current Sea Water Temperature:
+63.8°F
Maximum Sea Water Temperature in August: 71.8°F
Minimum Sea Water Temperature in August: 60.8°F
Average water temperature in August: 66.6°F

Sea Water Temperature for the Last 10 Days:

August 19 63.8°F August 14 62.4°F
August 18 62.4°F August 13 65.6°F
August 17 62.0°F August 12 65.8°F
August 16 62.4°F August 11 68.4°F
August 15 65.0°F August 10 68.4°F

When is the Warmest Sea for Moncton?

According to our data for the last three years for Moncton 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 Moncton was 65.4°F. The maximum and minimum values were 62.0°F and 69.0°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Moncton was 63.8°F. The maximum and minimum values were 57.8°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 Moncton was 63.4°F. The maximum and minimum values were 60.8°F and 67.0°F respectively.

Best Time to Visit Moncton
The most sunny months:
September 12 days
October 12 days
August 12 days
The most warm months:
July 76.2 °F
August 74.9 °F
June 67.5 °F
Warmest sea temperature:
August 66.7 °F
July 63.3 °F
September 63.0 °F
The most cold months:
February 21.7 °F
January 21.9 °F
March 29.9 °F
The most rainy months:
August 3 days
June 3 days
December 2 days
The most windy months:
November 13 mph
December 12 mph
March 12 mph

Moncton on the Weather Map

24 Hours Weather Forecast
Moncton
Local time: 10:28
19 aug, wednesday
1200 76°F
SE
4 mph
1500 82°F
N
4 mph
1800 76°F
NE
6 mph
2100 70°F
NE
6 mph
20 aug, thursday
0000 66°F
NE
6 mph
0300 64°F
NE
6 mph
0600 62°F
NE
4 mph
0900 66°F
E
4 mph