Riachão Weather in May
Average highs run from 31°C on May 1 to 32°C on May 31, and lows from 22°C to 21°C. Normal precipitation for the month is 56 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
- 31°C
- Average low
- 22°C
- Precipitation
- 56 mm
- Reanalysis high
- 38°CMay 31, 1998
- Reanalysis low
- 16°CMay 26, 2000
- Daylight
- 11 h 51 min to 11 h 44 min
- Cloud cover
- 50%
- Humidity
- 73%
- Dew point
- 20°C
- Wind
- 10.1 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 | 31°C | 22°C | 34°C 1998 | 20°C 2004 | 44% |
| May 2 | 31°C | 22°C | 34°C 2019 | 20°C 2000 | 43% |
| May 3 | 31°C | 22°C | 35°C 2019 | 20°C 2001 | 43% |
| May 4 | 31°C | 22°C | 36°C 2019 | 18°C 2004 | 42% |
| May 5 | 31°C | 22°C | 36°C 2019 | 18°C 2000 | 41% |
| May 6 | 31°C | 22°C | 36°C 2019 | 19°C 1997 | 40% |
| May 7 | 31°C | 22°C | 37°C 2019 | 20°C 2005 | 39% |
| May 8 | 31°C | 22°C | 36°C 2016 | 19°C 1996 | 38% |
| May 9 | 31°C | 22°C | 36°C 2016 | 19°C 1996 | 36% |
| May 10 | 31°C | 22°C | 37°C 2016 | 19°C 2005 | 35% |
| May 11 | 31°C | 22°C | 37°C 2019 | 19°C 2003 | 34% |
| May 12 | 31°C | 22°C | 38°C 2019 | 18°C 1997 | 33% |
| May 13 | 31°C | 22°C | 35°C 1998 | 18°C 1997 | 32% |
| May 14 | 31°C | 22°C | 36°C 1998 | 18°C 2000 | 31% |
| May 15 | 31°C | 22°C | 36°C 1998 | 17°C 2000 | 30% |
| May 16 | 31°C | 22°C | 36°C 1998 | 18°C 2000 | 30% |
| May 17 | 31°C | 22°C | 36°C 2016 | 18°C 1994 | 28% |
| May 18 | 31°C | 22°C | 36°C 1998 | 18°C 2008 | 28% |
| May 19 | 31°C | 22°C | 37°C 2016 | 19°C 2008 | 28% |
| May 20 | 31°C | 22°C | 37°C 2016 | 19°C 1994 | 27% |
| May 21 | 31°C | 22°C | 36°C 2016 | 20°C 2008 | 26% |
| May 22 | 31°C | 22°C | 37°C 2016 | 18°C 1997 | 26% |
| May 23 | 31°C | 22°C | 38°C 2016 | 17°C 1997 | 24% |
| May 24 | 31°C | 22°C | 37°C 2016 | 19°C 2004 | 23% |
| May 25 | 31°C | 22°C | 36°C 2007 | 18°C 2000 | 22% |
| May 26 | 32°C | 22°C | 36°C 1998 | 16°C 2000 | 21% |
| May 27 | 32°C | 21°C | 37°C 1998 | 18°C 1991 | 20% |
| May 28 | 32°C | 21°C | 37°C 1998 | 18°C 1991 | 19% |
| May 29 | 32°C | 21°C | 37°C 1998 | 18°C 1991 | 18% |
| May 30 | 32°C | 21°C | 37°C 1998 | 18°C 2008 | 17% |
| May 31 | 32°C | 21°C | 38°C 1998 | 17°C 2006 | 16% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-3).
- May 1
- sunrise 6:08 AM, sunset 5:59 PM
- May 31
- sunrise 6:12 AM, sunset 5:56 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.