Irkutsk Weather in May
Average highs run from 14°C on May 1 to 22°C on May 31, and lows from 1°C to 7°C. Normal precipitation for the month is 36 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
- 18°C
- Average low
- 4°C
- Precipitation
- 36 mm
- Record high
- 35°CMay 16, 1990
- Record low
- -14°CMay 1, 1908
- Daylight
- 14 h 55 min to 16 h 25 min
- Cloud cover
- 70%
- Humidity
- 60%
- Dew point
- 1°C
- Wind
- 13.3 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 | 14°C | 1°C | 28°C 2022 | -14°C 1908 | 24% |
| May 2 | 14°C | 0°C | 29°C 2022 | -10°C 1902 | 25% |
| May 3 | 14°C | 1°C | 26°C 1986 | -14°C 1901 | 26% |
| May 4 | 15°C | 1°C | 29°C 1940 | -10°C 1893 | 26% |
| May 5 | 15°C | 1°C | 28°C 2007 | -9°C 1926 | 26% |
| May 6 | 16°C | 1°C | 29°C 1949 | -8°C 1889 | 25% |
| May 7 | 15°C | 2°C | 30°C 2017 | -10°C 1939 | 25% |
| May 8 | 17°C | 1°C | 29°C 1926 | -9°C 1931 | 26% |
| May 9 | 18°C | 3°C | 31°C 1933 | -8°C 1906 | 26% |
| May 10 | 17°C | 2°C | 30°C 2001 | -9°C 1910 | 26% |
| May 11 | 17°C | 3°C | 33°C 2001 | -6°C 1942 | 26% |
| May 12 | 18°C | 3°C | 31°C 1901 | -5°C 1898 | 26% |
| May 13 | 18°C | 4°C | 30°C 1890 | -6°C 1926 | 26% |
| May 14 | 18°C | 4°C | 29°C 1890 | -7°C 1926 | 27% |
| May 15 | 19°C | 3°C | 29°C 2016 | -8°C 1910 | 28% |
| May 16 | 19°C | 5°C | 35°C 1990 | -5°C 1901 | 29% |
| May 17 | 19°C | 4°C | 28°C 1958 | -6°C 1893 | 29% |
| May 18 | 18°C | 4°C | 30°C 1940 | -7°C 1954 | 30% |
| May 19 | 18°C | 4°C | 31°C 1985 | -5°C 1954 | 32% |
| May 20 | 18°C | 4°C | 28°C 1933 | -7°C 1949 | 32% |
| May 21 | 19°C | 5°C | 31°C 1945 | -5°C 1942 | 32% |
| May 22 | 20°C | 5°C | 31°C 1992 | -6°C 1896 | 31% |
| May 23 | 20°C | 5°C | 30°C 1992 | -6°C 1901 | 32% |
| May 24 | 20°C | 6°C | 33°C 2017 | -8°C 1912 | 34% |
| May 25 | 21°C | 5°C | 33°C 1946 | -4°C 1934 | 34% |
| May 26 | 21°C | 6°C | 34°C 1999 | -4°C 1893 | 34% |
| May 27 | 20°C | 5°C | 32°C 1992 | -9°C 1933 | 34% |
| May 28 | 19°C | 6°C | 30°C 1929 | -4°C 1933 | 35% |
| May 29 | 20°C | 6°C | 30°C 2018 | -8°C 1933 | 36% |
| May 30 | 21°C | 7°C | 31°C 1987 | -5°C 1895 | 36% |
| May 31 | 22°C | 7°C | 33°C 1950 | -3°C 1896 | 36% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+8).
- May 1
- sunrise 5:33 AM, sunset 8:28 PM
- May 31
- sunrise 4:48 AM, sunset 9:13 PM
Other months
Sources
Records: NOAA GHCN-Daily, station RSM00030710, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: 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.