10 day forecast Monthly forecast Weather map

City or area

Go to comparison

August weather forecast in Saint John

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Sun

Sunday

Mon

Monday

Tue

Tuesday

Wed

Wednesday

Thu

Thursday

Fri

Friday

Sat

Saturday

27 July, sun

	748 mmHg		81%
	4.19 m/s		+14

27 July, Sunday. day, 23°; night, 15°; rain

28 July, mon

	748 mmHg		82%
	4.3 m/s		+14

28 July, Monday. day, 23°; night, 15°; rain

29 July, tue

	747 mmHg		82%
	4.4 m/s		+14

29 July, Tuesday. day, 23°; night, 15°; rain

30 July, wed

	748 mmHg		79%
	4 m/s		+14

30 July, Wednesday. day, 23°; night, 15°; clear

31 July, thu

	749 mmHg		76%
	3.8 m/s		+15

31 July, Thursday. day, 25°; night, 15°; clear

1 August, fri

	749 mmHg		77%
	4 m/s		+15

1 August, Friday. day, 24°; night, 15°; clear

2 August, sat

	749 mmHg		78%
	3.8 m/s		+15

2 August, Saturday. day, 24°; night, 15°; partly cloudy

3 August, sun

	749 mmHg		80%
	4.1 m/s		+15

3 August, Sunday. day, 23°; night, 15°; overcast

4 August, mon

	749 mmHg		81%
	4 m/s		+15

4 August, Monday. day, 23°; night, 15°; rain

5 August, tue

	749 mmHg		82%
	4.5 m/s		+14

5 August, Tuesday. day, 23°; night, 15°; rain

6 August, wed

	748 mmHg		78%
	4.1 m/s		+14

6 August, Wednesday. day, 24°; night, 15°; rain

7 August, thu

	749 mmHg		78%
	4 m/s		+14

7 August, Thursday. day, 23°; night, 14°; clear

8 August, fri

	749 mmHg		79%
	4.4 m/s		+14

8 August, Friday. day, 23°; night, 15°; rain

9 August, sat

	748 mmHg		81%
	4.5 m/s		+14

9 August, Saturday. day, 22°; night, 14°; rain

10 August, sun

	748 mmHg		80%
	4.5 m/s		+15

10 August, Sunday. day, 24°; night, 15°; partly cloudy

11 August, mon

	748 mmHg		81%
	4.3 m/s		+15

11 August, Monday. day, 23°; night, 15°; rain

12 August, tue

	749 mmHg		82%
	4.1 m/s		+15

12 August, Tuesday. day, 22°; night, 15°; rain

13 August, wed

	749 mmHg		81%
	3.9 m/s		+15

13 August, Wednesday. day, 23°; night, 14°; overcast

14 August, thu

	748 mmHg		81%
	4.1 m/s		+15

14 August, Thursday. day, 23°; night, 15°; partly cloudy

15 August, fri

	750 mmHg		80%
	3.9 m/s		+15

15 August, Friday. day, 23°; night, 15°; overcast

16 August, sat

	750 mmHg		81%
	4 m/s		+15

16 August, Saturday. day, 23°; night, 14°; partly cloudy

17 August, sun

	749 mmHg		81%
	4.4 m/s		+15

17 August, Sunday. day, 23°; night, 15°; partly cloudy

18 August, mon

	748 mmHg		82%
	4.1 m/s		+15

18 August, Monday. day, 23°; night, 14°; rain

19 August, tue

	748 mmHg		80%
	4.19 m/s		+15

19 August, Tuesday. day, 23°; night, 14°; partly cloudy

20 August, wed

	750 mmHg		79%
	3.7 m/s		+15

20 August, Wednesday. day, 23°; night, 14°; clear

21 August, thu

	750 mmHg		81%
	4 m/s		+15

21 August, Thursday. day, 22°; night, 14°; partly cloudy

22 August, fri

	749 mmHg		81%
	4.19 m/s		+15

22 August, Friday. day, 23°; night, 14°; partly cloudy

23 August, sat

	749 mmHg		79%
	4.5 m/s		+14

23 August, Saturday. day, 22°; night, 14°; partly cloudy

24 August, sun

	749 mmHg		78%
	4.19 m/s		+15

24 August, Sunday. day, 22°; night, 14°; rain

25 August, mon

	750 mmHg		78%
	4.1 m/s		+15

25 August, Monday. day, 23°; night, 13°; clear

26 August, tue

	750 mmHg		80%
	4.6 m/s		+15

26 August, Tuesday. day, 22°; night, 13°; clear

27 August, wed

	749 mmHg		78%
	4.19 m/s		+15

27 August, Wednesday. day, 23°; night, 14°; clear

28 August, thu

	750 mmHg		77%
	4.19 m/s		+14

28 August, Thursday. day, 22°; night, 13°; clear

29 August, fri

	750 mmHg		79%
	4.8 m/s		+15

29 August, Friday. day, 21°; night, 13°; rain

30 August, sat

	749 mmHg		81%
	4.9 m/s		+15

30 August, Saturday. day, 21°; night, 13°; overcast

31 August, sun

	749 mmHg		78%
	4.8 m/s		+14

31 August, Sunday. day, 22°; night, 13°; clear

1 September, mon

	750 mmHg		78%
	4.5 m/s		+14

1 September, Monday. day, 22°; night, 13°; clear

2 September, tue

	751 mmHg		78%
	4.6 m/s		+14

2 September, Tuesday. day, 21°; night, 12°; partly cloudy

3 September, wed

	750 mmHg		81%
	4.6 m/s		+14

3 September, Wednesday. day, 21°; night, 12°; clear

4 September, thu

	749 mmHg		81%
	4.6 m/s		+14

4 September, Thursday. day, 21°; night, 13°; partly cloudy

5 September, fri

	750 mmHg		77%
	4.6 m/s		+14

5 September, Friday. day, 21°; night, 12°; clear

6 September, sat

	751 mmHg		77%
	4.5 m/s		+14

6 September, Saturday. day, 21°; night, 12°; clear

Average data for 10 years

Saint John August

8

sunny days

10

days with precipitation

9

cloudy days

8 sunny days; 10 days with precipitation; 9 cloudy days;

80

%

air humidity

3

m/s

WindSW

87

mm of precipitation

(7% of annual average)

+15

°C

Water temperature

air humidity 80%; 87 millimeters of precipitation (7% of annual average); Wind south-westerly 3 Meters per second; Water temperature +15°

Weather graphs for August

TemperatureWater temperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

S

S

SW

S

S

SW

SW

S

S

SW

SW

S

SW

S

S

S

SW

SW

SW

SW

S

S

SW

SW

SW

SW

SW

SW

S

SW

SW

1

Average data for 10 years

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Daytime temperature

Night-time temperature

Cities near you

Halifax
Bangor
Liverpool
New Glasgow
Augusta
Bridgewater
Bonaventure
Iles de la Madeleine
Charlottetown

Cities with similar weather in August

Helsinki
Stockholm
Palanga
Copenhagen
Gdansk
Klaipeda
Lima
Brisbane
Bruges

The weather forecast for August 2025 is based on historical data from the past 10 years.

In August, the weather in Saint John is typically warm. Average daily high temperature in August is about 23 degrees above zero. On average, Saint John has 10 rainy, 9 partly cloudy, 8 sunny, and 4 cloudy days in August. The rains are usually heavy.

Links

Help Terms of use Contact us

For partners

Advertisement Yandex.Weather API

Weather forecasts

Hourly forecast Detailed 10 day forecast Monthly forecast Weather map Magnetic storms

Download app

English

English
Русский

Source data: Yandex.Traffic, Roshydromet FSBI "CAO", NOAA, © OpenStreetMap

© 2017–2025 YANDEX LLC