Weather in Saint John: August
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Average day temperature: | 71.5°F |
| Average night temperature: | 59.3°F | |
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Sea water temperature: | 59.4°F |
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Number of sunny days: | 9 days |
| Day length: | 13.3 - 14.7 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 1.3 in. | |
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forecast
| Saint John |
temperature
| Saint John |
Air temperature in August, °F
The highest day temperature during August of 2026 was 77°F. At the same time the lowest night temperature was 53°F. Daily and nightly averages during August were 69.2°F and 58.4°F.
Sea water temperature in Saint John in August, °F
The average sea water temperature in August of 2026 was 58.4°F. The highest and lowest sea temperatures during the month were 61.9°F and 52.5°F.
Mostly all days in August are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in August, in.
Precipitation total value in Saint John in August is 1.3 in. Other months of the year show relatively similar values.
The average wind speed value in August is 5.9 mph It makes August lest windy month of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in August is: 6.5.
Best time for vacation in Saint John
Saint John on a weather map
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