Measurements:
°C
°F
CURRENT WEATHER
17:51
Barrie
68°F
S 4 mph
Feels like: 68°F
Precip: 9%
World Resorts Canada Barrie Weather

7 Day Weather Forecast

09.28
mon
DAY
68°F
S 6 mph
precip
4%
NIGHT
60°F
NW 3 mph
precip
22%
09.29
tue
DAY
66°F
N 5 mph
precip
9%
NIGHT
60°F
N 6 mph
precip
32%
09.30
wed
DAY
68°F
NE 8 mph
precip
16%
NIGHT
68°F
N 7 mph
precip
15%
10.01
thu
DAY
80°F
NE 14 mph
precip
10%
NIGHT
56°F
SE 13 mph
precip
28%
10.02
fri
DAY
58°F
SE 13 mph
precip
13%
NIGHT
48°F
E 6 mph
precip
8%
10.03
sat
DAY
54°F
SE 6 mph
precip
4%
NIGHT
46°F
NW 4 mph
precip
14%
10.04
sun
DAY
52°F
NW 16 mph
precip
39%
NIGHT
52°F
N 6 mph
precip
80%

Barrie Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Barrie was 20.1°F. The maximum and minimum values were 18.0°F and 21.3°F respectively.

Barrie on the Weather Map

Best Time to Visit Barrie
The most sunny months:
July 14 days
August 14 days
June 12 days
The most warm months:
July 79.4 °F
August 77.4 °F
June 73.4 °F
Warmest sea temperature:
August 74.5 °F
July 72.6 °F
September 69.9 °F
The most cold months:
January 19.7 °F
February 21.0 °F
December 28.7 °F
The most rainy months:
June 3 days
August 3 days
July 2 days
The most windy months:
November 10 mph
December 10 mph
March 10 mph
more details