Weather in Saint John: July
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Average day temperature: | 72.6°F |
| Average night temperature: | 60.6°F | |
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Sea water temperature: | 56.9°F |
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Number of sunny days: | 6 days |
| Day length: | 14.7 - 15.6 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 1.5 in. | |
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forecast
| Saint John |
temperature
| Saint John |
Air temperature in July, °F
The highest day temperature during July of 2025 was 78°F. At the same time the lowest night temperature was 51°F. Daily and nightly averages during July were 67.0°F and 56.8°F.
Sea water temperature in Saint John in July, °F
The average sea water temperature in July of 2025 was 55.5°F. The highest and lowest sea temperatures during the month were 63.1°F and 49.8°F.
Mostly all days in July are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in July, in.
Precipitation total value in Saint John in July is 1.5 in. Other months of the year show relatively similar values.
The average wind speed value in July is 6.2 mph It makes July one of the least windy months 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 July is: 6.1.
Best time for vacation in Saint John
Saint John on a weather map
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