Chetumal Weather in May
Average highs run from 35°C on May 1 to 33°C on May 31, and lows from 24°C to 24°C. Normal precipitation for the month is 102 mm over about 12 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
- 34°C
- Average low
- 24°C
- Precipitation
- 102 mm
- Reanalysis high
- 43°CMay 11, 1998
- Reanalysis low
- 18°CMay 1, 1992
- Daylight
- 12 h 49 min to 13 h 10 min
- Cloud cover
- 56%
- Humidity
- 68%
- Dew point
- 21°C
- Wind
- 4.7 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 | 35°C | 24°C | 40°C 1999 | 18°C 1992 | 20% |
| May 2 | 35°C | 24°C | 39°C 2005 | 20°C 1992 | 20% |
| May 3 | 35°C | 24°C | 40°C 1998 | 21°C 1992 | 21% |
| May 4 | 35°C | 24°C | 40°C 2016 | 19°C 1992 | 22% |
| May 5 | 35°C | 24°C | 40°C 1998 | 20°C 1992 | 24% |
| May 6 | 35°C | 24°C | 39°C 1998 | 19°C 2016 | 25% |
| May 7 | 35°C | 24°C | 38°C 1998 | 20°C 2016 | 26% |
| May 8 | 35°C | 24°C | 37°C 1994 | 20°C 2017 | 28% |
| May 9 | 35°C | 24°C | 39°C 1998 | 19°C 2016 | 30% |
| May 10 | 35°C | 24°C | 41°C 1998 | 21°C 2001 | 32% |
| May 11 | 35°C | 24°C | 43°C 1998 | 22°C 2020 | 34% |
| May 12 | 35°C | 24°C | 42°C 1998 | 21°C 1993 | 36% |
| May 13 | 35°C | 24°C | 40°C 1998 | 22°C 1993 | 37% |
| May 14 | 35°C | 24°C | 37°C 2019 | 23°C 2001 | 37% |
| May 15 | 34°C | 24°C | 38°C 2011 | 22°C 2001 | 38% |
| May 16 | 34°C | 24°C | 38°C 2011 | 21°C 2014 | 40% |
| May 17 | 34°C | 24°C | 37°C 2009 | 21°C 2014 | 41% |
| May 18 | 34°C | 24°C | 38°C 2008 | 21°C 1998 | 42% |
| May 19 | 34°C | 24°C | 40°C 1995 | 21°C 2006 | 43% |
| May 20 | 34°C | 24°C | 37°C 1995 | 22°C 2006 | 43% |
| May 21 | 34°C | 24°C | 37°C 1998 | 21°C 2006 | 44% |
| May 22 | 34°C | 24°C | 37°C 2016 | 21°C 2004 | 46% |
| May 23 | 34°C | 24°C | 37°C 2016 | 21°C 2004 | 47% |
| May 24 | 34°C | 24°C | 38°C 2016 | 22°C 2004 | 48% |
| May 25 | 34°C | 24°C | 38°C 1995 | 22°C 1994 | 50% |
| May 26 | 34°C | 24°C | 37°C 2011 | 21°C 2004 | 51% |
| May 27 | 33°C | 24°C | 38°C 2016 | 22°C 2008 | 52% |
| May 28 | 33°C | 24°C | 37°C 2016 | 22°C 2008 | 54% |
| May 29 | 33°C | 24°C | 38°C 2016 | 23°C 1999 | 56% |
| May 30 | 33°C | 24°C | 38°C 2016 | 22°C 2000 | 59% |
| May 31 | 33°C | 24°C | 38°C 2016 | 22°C 1994 | 61% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EST).
- May 1
- sunrise 6:26 AM, sunset 7:15 PM
- May 31
- sunrise 6:16 AM, sunset 7:26 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.