The highest day temperature in May 2023 was 95°F. The lowest night temperature was 47°F. The average values for day and night temperatures during May were 67.2°F и 53.1°F respectivly.

The average sea surface temperature in May 2023 for Bilbao was 61.5°F. The maximum and minimum values were 59.6°F and 65.6°F respectively.

You can expect various weather conditions during May. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in May for Bilbao is 2.4 in.

The average wind speed in May is 6.6 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 Bilbao in May is 8.4 hours.