Arouca Weather in May
Average highs run from 18°C on May 1 to 23°C on May 31, and lows from 7°C to 11°C. Normal precipitation for the month is 74 mm over about 9 wet days.
May day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
May at a glance
- Average high
- 20°C
- Average low
- 9°C
- Precipitation
- 74 mm
- Reanalysis high
- 35°CMay 28, 2001
- Reanalysis low
- 0°CMay 3, 1991
- Daylight
- 13 h 59 min to 14 h 54 min
- Cloud cover
- 59%
- Humidity
- 76%
- Dew point
- 9°C
- Wind
- 7.2 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| May 1 | 18°C | 7°C | 27°C 1997 | 2°C 2013 | 35% |
| May 2 | 18°C | 7°C | 25°C 1994 | 3°C 1991 | 35% |
| May 3 | 19°C | 7°C | 27°C 1995 | 0°C 1991 | 34% |
| May 4 | 19°C | 8°C | 27°C 2016 | 1°C 2010 | 35% |
| May 5 | 19°C | 8°C | 23°C 2009 | 0°C 2010 | 35% |
| May 6 | 19°C | 8°C | 24°C 2018 | 1°C 1991 | 36% |
| May 7 | 19°C | 8°C | 26°C 2005 | 2°C 1991 | 35% |
| May 8 | 19°C | 8°C | 26°C 2017 | 3°C 2004 | 34% |
| May 9 | 19°C | 8°C | 27°C 1992 | 2°C 1991 | 34% |
| May 10 | 19°C | 8°C | 26°C 2012 | 3°C 2001 | 35% |
| May 11 | 20°C | 8°C | 28°C 2015 | 3°C 2013 | 37% |
| May 12 | 20°C | 8°C | 30°C 1992 | 2°C 1997 | 37% |
| May 13 | 20°C | 8°C | 27°C 1992 | 3°C 1996 | 36% |
| May 14 | 20°C | 9°C | 29°C 2019 | 4°C 2010 | 36% |
| May 15 | 20°C | 9°C | 28°C 1992 | 4°C 2009 | 36% |
| May 16 | 20°C | 9°C | 33°C 1992 | 5°C 2010 | 35% |
| May 17 | 20°C | 9°C | 33°C 1992 | 6°C 2005 | 35% |
| May 18 | 21°C | 9°C | 28°C 2007 | 3°C 2009 | 35% |
| May 19 | 21°C | 9°C | 29°C 1992 | 4°C 1993 | 35% |
| May 20 | 21°C | 9°C | 30°C 1992 | 4°C 1993 | 35% |
| May 21 | 21°C | 9°C | 29°C 1992 | 2°C 1993 | 34% |
| May 22 | 21°C | 10°C | 30°C 2003 | 6°C 2006 | 35% |
| May 23 | 21°C | 10°C | 29°C 2017 | 5°C 2014 | 34% |
| May 24 | 22°C | 10°C | 31°C 2017 | 3°C 2014 | 33% |
| May 25 | 22°C | 10°C | 31°C 1999 | 5°C 2003 | 32% |
| May 26 | 22°C | 10°C | 31°C 1991 | 4°C 2014 | 31% |
| May 27 | 22°C | 10°C | 31°C 2001 | 6°C 2000 | 29% |
| May 28 | 22°C | 10°C | 35°C 2001 | 5°C 2013 | 29% |
| May 29 | 23°C | 10°C | 32°C 2006 | 5°C 2013 | 29% |
| May 30 | 23°C | 11°C | 32°C 2009 | 3°C 2013 | 28% |
| May 31 | 23°C | 11°C | 33°C 2012 | 5°C 2013 | 29% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+1).
- May 1
- sunrise 6:31 AM, sunset 8:30 PM
- May 31
- sunrise 6:04 AM, sunset 8:58 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.