The highest day temperature in May 2026 was 78°F. The lowest night temperature was 41°F. The average values for day and night temperatures during May were 64.1°F и 50.8°F respectivly.

The average sea surface temperature in May 2026 for Tacoma was 54.3°F. The maximum and minimum values were 51.8°F and 57.2°F respectively.

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

Precipitation total in May for Tacoma is 0.7 in.

The average wind speed in May is 4.9 mph. This value is relatively stable throughout the year.

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 Tacoma in May is 7.3 hours.