The highest day temperature in March 2026 was 62°F. The lowest night temperature was -3°F. The average values for day and night temperatures during March were 37.5°F и 27.1°F respectivly.

The average sea surface temperature in March 2026 for Oshawa was 33.5°F. The maximum and minimum values were 32.4°F and 35.4°F respectively.

Most of the days in March are gloomy but you can also expect sunny days.

Precipitation total in March for Oshawa is 0.9 in.

The average wind speed in March is 11.4 mph. It makes March one of the most windy months of the year for Oshawa.

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 Oshawa in March is 5.2 hours.