Saint John Weather: August
 |
Average Day Temperature: | 74.3°F |
|
Average Night Temperature: | 60.5°F |
|
Sea Water Temperature: | 60.6°F |
|
Number of Sunny Days: | 9 days |
| Sunshine Hours: | 13.3 - 14.7 hours | |
|
Number of Rainy Days: | 2 days |
| Precipitation Totals: | 1.1 in | |
| detailed information | ||
14 day weather
forecast
forecast
| Saint John |
Sea Water
Temperature
Temperature
| Saint John |
Air Temperature in August, °F
The highest day temperature in August 2025 was 78°F. The lowest night temperature was 49°F. The average values for day and night temperatures during August were 70.7°F и 55.0°F respectivly.
Saint John Water Sea Temperature in August, °F
The average sea surface temperature in August 2025 for Saint John was 60.5°F. The maximum and minimum values were 58.0°F and 63.0°F respectively.
Sunny, Cloudy and Gloomy days
Most of the days in August are gloomy but you can also expect sunny days.
Precipitation Totals in August, in
Precipitation total in August for Saint John is 1.1 in.
Wind Speed in August, mph
The average wind speed in August is 5.9 mph. This value is relatively stable throughout the year.
Average Sunny Hours Per Day
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Saint John in August is 6.9 hours.
Saint John on the Weather Map
Canada Resorts:
NAME
F°
| Halifax |  |
+24 |
| Kingston |  |
+4 |
| Moncton | |
+2 |
| Montreal | |
-2 |
| Niagara Falls | |
+10 |
| Ottawa | |
-4 |
| Prince Edward Island | |
+16 |
| Quebec | |
-12 |
| Rocky Harbour |  |
+28 |
| St. John's |  |
+32 |
| Sydney | |
+34 |
| Toronto | |
+10 |
| Vancouver | |
+42 |
| Victoria | |
+44 |
| Winnipeg | |
+12 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Saint John
Local time: 01:25
05 dec, friday
| 0300 |  |
0°F | SE 16 mph |
| 0600 | |
-2°F | SE 14 mph |
| 0900 |  |
4°F | SE 12 mph |
| 1200 | |
16°F | SE 12 mph |
| 1500 | |
20°F | E 10 mph |
| 1800 | |
20°F | E 6 mph |
| 2100 | |
16°F | SE 4 mph |
06 dec, saturday
| 0000 | |
14°F | SE 3 mph |