The highest day temperature in May 2025 was 86°F. The lowest night temperature was 39°F. The average values for day and night temperatures during May were 61.7°F и 48.5°F respectivly.

The average sea surface temperature in May 2025 for Brunswick was 49.0°F. The maximum and minimum values were 45.6°F and 52.4°F respectively.

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

Precipitation total in May for Brunswick is 0.8 in. It makes may the least rainy month of the year.

The average wind speed in May is 6.9 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 Brunswick in May is 7.3 hours.