Porto-Novo Weather in May
Average highs run from 29°C on May 1 to 28°C on May 31, and lows from 26°C to 25°C. Normal precipitation for the month is 167 mm over about 28 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
- 29°C
- Average low
- 26°C
- Precipitation
- 167 mm
- Record high
- 39°CMay 19, 1952
- Record low
- 20°CMay 11, 1963
- Daylight
- 12 h 21 min to 12 h 29 min
- Cloud cover
- 72%
- Humidity
- 87%
- Dew point
- 25°C
- Wind
- 10.8 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 | 29°C | 26°C | 35°C 1949 | 21°C 1965 | 83% |
| May 2 | 29°C | 26°C | 34°C 1941 | 21°C 1962 | 83% |
| May 3 | 29°C | 26°C | 34°C 1951 | 21°C 1964 | 83% |
| May 4 | 29°C | 26°C | 35°C 1948 | 22°C 1972 | 85% |
| May 5 | 29°C | 26°C | 35°C 1949 | 22°C 1967 | 86% |
| May 6 | 29°C | 26°C | 35°C 1949 | 21°C 1968 | 87% |
| May 7 | 29°C | 26°C | 34°C 2015 | 20°C 1955 | 89% |
| May 8 | 29°C | 26°C | 34°C 1944 | 22°C 1965 | 90% |
| May 9 | 29°C | 26°C | 34°C 1947 | 21°C 1964 | 90% |
| May 10 | 29°C | 26°C | 34°C 1970 | 21°C 1978 | 90% |
| May 11 | 29°C | 26°C | 34°C 1970 | 20°C 1963 | 90% |
| May 12 | 29°C | 26°C | 34°C 1944 | 21°C 1974 | 91% |
| May 13 | 29°C | 26°C | 34°C 1947 | 21°C 1963 | 92% |
| May 14 | 29°C | 26°C | 34°C 1951 | 21°C 1976 | 92% |
| May 15 | 29°C | 26°C | 33°C 2010 | 20°C 1963 | 92% |
| May 16 | 29°C | 26°C | 37°C 1974 | 21°C 1969 | 92% |
| May 17 | 29°C | 26°C | 34°C 1995 | 21°C 1957 | 92% |
| May 18 | 29°C | 26°C | 34°C 1944 | 20°C 1997 | 92% |
| May 19 | 29°C | 25°C | 39°C 1952 | 21°C 1956 | 92% |
| May 20 | 29°C | 25°C | 33°C 1972 | 21°C 1967 | 92% |
| May 21 | 29°C | 25°C | 34°C 1949 | 21°C 1944 | 92% |
| May 22 | 29°C | 25°C | 33°C 1973 | 22°C 1943 | 92% |
| May 23 | 29°C | 25°C | 33°C 1969 | 21°C 1971 | 91% |
| May 24 | 29°C | 25°C | 35°C 2010 | 22°C 1946 | 92% |
| May 25 | 29°C | 25°C | 33°C 2002 | 21°C 1965 | 92% |
| May 26 | 29°C | 25°C | 34°C 2002 | 22°C 1963 | 92% |
| May 27 | 29°C | 25°C | 33°C 1944 | 22°C 1995 | 93% |
| May 28 | 29°C | 25°C | 33°C 1995 | 21°C 1958 | 93% |
| May 29 | 29°C | 25°C | 33°C 1989 | 21°C 1955 | 93% |
| May 30 | 29°C | 25°C | 33°C 1950 | 21°C 1948 | 94% |
| May 31 | 28°C | 25°C | 35°C 1947 | 21°C 1962 | 95% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+1).
- May 1
- sunrise 6:36 AM, sunset 6:57 PM
- May 31
- sunrise 6:33 AM, sunset 7:02 PM
Other months
Sources
Records: NOAA GHCN-Daily, station BN000005344, 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 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.