Mariano Roque Alonso Weather in May
Average highs run from 27°C on May 1 to 24°C on May 31, and lows from 17°C to 13°C. Normal precipitation for the month is 143 mm over about 9 wet days.
May day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
May at a glance
- Average high
- 25°C
- Average low
- 15°C
- Precipitation
- 143 mm
- Record high
- 35°CMay 1, 2018
- Record low
- 1°CMay 21, 1990
- Daylight
- 11 h 08 min to 10 h 40 min
- Cloud cover
- 54%
- Humidity
- 80%
- Dew point
- 16°C
- Wind
- 13.0 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 | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| May 1 | 27°C | 17°C | 35°C 2018 | 7°C 2016 | 31% |
| May 2 | 27°C | 16°C | 34°C 2024 | 8°C 2012 | 30% |
| May 3 | 27°C | 16°C | 35°C 2018 | 8°C 2011 | 29% |
| May 4 | 27°C | 16°C | 35°C 2018 | 7°C 1980 | 28% |
| May 5 | 27°C | 16°C | 34°C 2018 | 6°C 2001 | 29% |
| May 6 | 27°C | 16°C | 33°C 2009 | 8°C 2000 | 28% |
| May 7 | 27°C | 16°C | 33°C 1994 | 7°C 2003 | 28% |
| May 8 | 26°C | 16°C | 31°C 2018 | 7°C 2003 | 28% |
| May 9 | 26°C | 15°C | 33°C 2011 | 7°C 1987 | 29% |
| May 10 | 26°C | 15°C | 34°C 1993 | 3°C 1987 | 29% |
| May 11 | 26°C | 15°C | 32°C 1982 | 5°C 1984 | 28% |
| May 12 | 26°C | 15°C | 34°C 1993 | 5°C 1973 | 27% |
| May 13 | 26°C | 15°C | 34°C 2009 | 8°C 2006 | 27% |
| May 14 | 26°C | 15°C | 33°C 2009 | 7°C 1973 | 27% |
| May 15 | 25°C | 15°C | 33°C 2005 | 8°C 1993 | 28% |
| May 16 | 25°C | 15°C | 32°C 2002 | 7°C 2009 | 28% |
| May 17 | 25°C | 15°C | 32°C 2003 | 6°C 1977 | 30% |
| May 18 | 25°C | 15°C | 33°C 2003 | 6°C 2001 | 30% |
| May 19 | 25°C | 14°C | 32°C 2006 | 6°C 1995 | 30% |
| May 20 | 25°C | 14°C | 31°C 1997 | 4°C 1999 | 30% |
| May 21 | 24°C | 14°C | 34°C 2008 | 1°C 1990 | 30% |
| May 22 | 24°C | 14°C | 33°C 2008 | 4°C 1990 | 31% |
| May 23 | 24°C | 14°C | 33°C 2008 | 6°C 1997 | 30% |
| May 24 | 24°C | 14°C | 33°C 2008 | 6°C 2006 | 31% |
| May 25 | 24°C | 14°C | 29°C 2011 | 4°C 2007 | 31% |
| May 26 | 24°C | 13°C | 30°C 2000 | 6°C 2020 | 30% |
| May 27 | 24°C | 13°C | 32°C 1984 | 6°C 1979 | 30% |
| May 28 | 24°C | 13°C | 32°C 1991 | 7°C 2014 | 30% |
| May 29 | 24°C | 13°C | 32°C 1973 | 7°C 2007 | 29% |
| May 30 | 24°C | 13°C | 31°C 2012 | 3°C 2008 | 29% |
| May 31 | 24°C | 13°C | 30°C 2006 | 3°C 1988 | 28% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-3).
- May 1
- sunrise 7:13 AM, sunset 6:21 PM
- May 31
- sunrise 7:28 AM, sunset 6:08 PM
Other months
Sources
Records: NOAA GHCN-Daily, station PAM00086218, every year on file, quality-flagged values removed. 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.