Weather in St. John's: March
| Average day temperature: | 31.7°F | |
| Average night temperature: | 28.5°F | |
| Sea water temperature: | 32.1°F | |
| Number of sunny days: | 2 days | |
| Day length: | 11.1 - 12.8 hours | |
| Number of days with precipitation: | 5 days | |
| Precipitation totals: | 2.8 in. | |
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| St. John's |
Air temperature in March, °F
The highest day temperature during March of 2025 was 47°F. At the same time the lowest night temperature was 21°F. Daily and nightly averages during March were 33.8°F and 31.2°F.
Sea water temperature in St. John's in March, °F
The average sea water temperature in March of 2025 was 32.6°F. The highest and lowest sea temperatures during the month were 34.3°F and 31.5°F.
Mostly all days in March are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in March, in.
Precipitation total value in St. John's in March is 2.8 in. Other months of the year show relatively similar values.
The average wind speed value in March is 15.3 mph It makes March one of the most 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 March is: 3.3.
Best time for vacation in St. John's
St. John's on a weather map

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