| < May >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Average Daylight per day
|Sun altitude at solar noon on the 21st day.
- The average temperature in Portalegre in May is very mild at 15.6 °C (60.08 °F).
- Afternoons can be warm with average high temperatures reaching 20.5 °C (68.9 °F).
- Overnight temperatures are generally quite mild with an average low of 10.7 °C (51.3 °F).
- The mean diurnal temperature range/ variation in May is 9.8 °C (17.6 °F).
- The weather in May is slightly dry. Only 52mm (2in) of fluid is discharged.
- The shortest day is 13:49 long and the longest day is 14:42 long with an average length of 14:18.
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Weather Trend Graph for May in Portalegre, Portugal
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