Saint John in august: average Weather, Temperature and Climate
Weather in Saint John in august 2025
The weather in Saint John in august comes from statistical datas on the last years. You can view the weather statistics for all the month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout august
good weather
Weather at 6am
65°F
Clear/Sunny
43% of time
25%
15%
8%
Weather at 12pm
72°F
Clear/Sunny
49% of time
26%
12%
11%
Weather at 6pm
65°F
Clear/Sunny
41% of time
22%
15%
12%
Weather at 3am
59°F
39%
19%
19%
11%
Evolution of daily average temperature and precipitation in Saint John in august
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Saint John in august.
The climate of Saint John in august is good
In august in Saint John, the climate is rather dry (with 2.5in of rainfall over 3 days). It should be noted a worsening from the previous month since in july there is an average of 3.1in of precipitation over 5 days.
The climate quite good there august. Temperatures are up to 72°F. The minimum is 63°F. Thus, the mean temperature average on this month of august in Saint John is 68°F. Note that these seasonal averages are in contrast with those observed in Saint John in august with a maximum record of 81°F in 2010 and a minimum record of 50°F in 2020.
Day length in Saint John in august is 14:05. The sun rises at 05:26 and sets at 19:31.
With a good climate, this month is recommended to go there.
Seasonal average climate and temperature of Saint John in august
Check below seasonal norms These datas are set from the weather statements earlier years of the month of august.
| August | |||||
| Outside temperature | |||||
| Average temperature | 68°F | ||||
| Highest temperature | 72°F | ||||
| Lowest temperature | 63°F | ||||
| Highest record temperature | 81°F (2010) | ||||
| Lowest record temperature | 50°F (2020) | ||||
| Number of days at +65°F | 30 day(s) (97%) | ||||
| Sea temperature | |||||
| Average sea temperature | 57°F | ||||
| Lowest sea temperature | 55°F | ||||
| Highest sea temperature | 59°F | ||||
| Wind | |||||
| Wind speed | 17km/h | ||||
| Wind temperature | 63°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 2.5in | ||||
| Number of days with rainfall | 3 day(s) (11%) | ||||
| Record daily rainfall | 2in (2009) | ||||
| Other climate data | |||||
| Humidity | 87% | ||||
| Visibility | 8.91km | ||||
| Cloud cover | 37% | ||||
| UV index | 5 | ||||
| Daily sunshine hours | 13 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:26 | ||||
| Time of sunset | 19:31 | ||||
| Length of day | 14:05 | ||||
| Our opinion about the weather in august | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last august?
Here is the day by day recorded weather in Saint John in august 2024:
67°F to 77°F
68°F to 88°F
68°F to 76°F
68°F to 86°F
67°F to 83°F
59°F to 76°F
58°F to 76°F
54°F to 77°F
58°F to 67°F
70°F to 79°F
59°F to 81°F
61°F to 77°F
58°F to 83°F
59°F to 76°F
56°F to 79°F
58°F to 79°F
58°F to 79°F
59°F to 76°F
63°F to 83°F
65°F to 67°F
56°F to 61°F
58°F to 68°F
54°F to 72°F
56°F to 81°F
63°F to 81°F
63°F to 79°F
59°F to 81°F
61°F to 72°F
49°F to 74°F
49°F to 76°F
50°F to 74°F
Map: other cities in Canada in august
Cities near Saint John:
| Fredericton in august | good weather |
| Fundy National Park in august | good weather |
| Moncton in august | good weather |
| Yarmouth in august | good weather |
| Miramichi in august | good weather |
| Hebron (Prince Edward Island) in august | good weather |
| Halifax in august | good weather |
| Charlottetown in august | good weather |
| Bathurst in august | good weather |
| Cape Breton Island in august | good weather |
| Quebec City in august | good weather |
| Sydney in august | good weather |
Click over cities on the map for information about the weather in august.
Saint John
perfect weather
good
tolerable
bad
very bad
Weather data for Saint John in august:
Weather data for Saint John for august are derived from an average of the weather forecast since 2009 in Saint John. There is a margin of error and these forecasts are to be considered as general information only. The weather in Saint John can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Saint John.