Saint John Weather Averages

Climate averages for Saint John based on 10 years of historical data.

Average Saint John temperatures by month

Avg high

10°

J

9°

F

10°

M

12°

A

14°

M

17°

J

18°

J

19°

A

18°

S

16°

O

13°

N

11°

D

Avg low

7°

J

7°

F

8°

M

9°

A

11°

M

14°

J

16°

J

16°

A

15°

S

13°

O

11°

N

9°

D

Average rainfall in Saint John by month

Rainfall (mm)

114

J

82

F

79

M

45

A

57

M

66

J

57

J

80

A

85

S

114

O

129

N

123

D

Sunshine hours in Saint John by month

Sunshine (h/day)

1

J

2

F

2

M

4

A

4

M

5

J

5

J

4

A

3

S

2

O

1

N

1

D

Humidity in Saint John by month

Average humidity

76%

J

78%

F

79%

M

78%

A

82%

M

83%

J

82%

J

80%

A

77%

S

77%

O

76%

N

78%

D

Month-by-month averages

Month	Avg High	Avg Low	Rainfall	Sunshine
Weer in januari	10°C	7°C	114 mm	1.3h
Weer in februari	9°C	7°C	82 mm	1.8h
Weer in maart	10°C	8°C	79 mm	2.3h
Weer in april	12°C	9°C	45 mm	3.9h
Weer in mei	14°C	11°C	57 mm	4.3h
Weer in juni	17°C	14°C	66 mm	4.9h
Weer in juli	18°C	16°C	57 mm	4.6h
Weer in augustus	19°C	16°C	80 mm	3.9h
Weer in september	18°C	15°C	85 mm	3.3h
Weer in oktober	16°C	13°C	114 mm	2.3h
Weer in november	13°C	11°C	129 mm	1.3h
Weer in december	11°C	9°C	123 mm	1.3h