Measurements:
°C
°F
Moncton
68°F
N 6 mph
Feels like: 68°F
Precip: 0%
World Resorts Canada Moncton Weather

Moncton Sea Water Temperature

Current Sea Water Temperature:
+46.6°F
Maximum Sea Water Temperature in May: 52.4°F
Minimum Sea Water Temperature in May: 30.0°F
Average water temperature in May: 42.1°F

Sea Water Temperature for the Last 10 Days:

May 19 46.6°F May 14 42.4°F
May 18 46.6°F May 13 39.2°F
May 17 46.8°F May 12 38.6°F
May 16 43.2°F May 11 40.2°F
May 15 44.0°F May 10 41.8°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: 2025 2024 2023

The average sea surface temperature in August 2025 for Moncton was 65.6°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 Moncton was 62.5°F. The maximum and minimum values were 58.6°F and 67.2°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:
October 12 days
September 12 days
August 12 days
The most warm months:
July 75.4 °F
August 74.9 °F
June 67.0 °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: 10:21
19 may, tuesday
1200 80°F
NE
8 mph
1500 80°F
S
2 mph
1800 60°F
S
3 mph
2100 56°F
W
3 mph
20 may, wednesday
0000 56°F
NW
4 mph
0300 58°F
NE
6 mph
0600 62°F
NE
9 mph
0900 72°F
E
13 mph