The highest day temperature in May 2023 was 82°F. The lowest night temperature was 57°F. The average values for day and night temperatures during May were 74.0°F и 60.3°F respectivly.

The average sea surface temperature in May 2023 for Sintra was 62.0°F. The maximum and minimum values were 59.2°F and 65.2°F respectively.

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

Precipitation total in May for Sintra is 1.4 in.

The average wind speed in May is 11.9 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 Sintra in May is 10.8 hours.