The highest day temperature in May 2026 was 58°F. The lowest night temperature was 29°F. The average values for day and night temperatures during May were 45.6°F и 37.3°F respectivly.

The average sea surface temperature in May 2026 for Rocky Harbour was 37.9°F. The maximum and minimum values were 33.8°F and 43.2°F respectively.

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

Precipitation total in May for Rocky Harbour is 1.7 in. It makes may one of the least rainy months of the year.

The average wind speed in May is 7.5 mph.

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 Rocky Harbour in May is 5.1 hours.