Oulu Weather in May
Average highs run from 8°C on May 1 to 13°C on May 31, and lows from 0°C to 6°C. Normal precipitation for the month is 62 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
- 11°C
- Average low
- 3°C
- Precipitation
- 62 mm
- Reanalysis high
- 25°CMay 19, 2010
- Reanalysis low
- -5°CMay 1, 2007
- Daylight
- 17 h 05 min to 20 h 35 min
- Cloud cover
- 66%
- Humidity
- 81%
- Dew point
- 4°C
- Wind
- 9.4 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 | 8°C | 0°C | 16°C 2008 | -5°C 2007 | 34% |
| May 2 | 8°C | 0°C | 17°C 2008 | -4°C 2013 | 35% |
| May 3 | 8°C | 0°C | 19°C 2008 | -3°C 2003 | 37% |
| May 4 | 8°C | 1°C | 18°C 2008 | -3°C 2010 | 38% |
| May 5 | 8°C | 1°C | 17°C 2004 | -3°C 1999 | 37% |
| May 6 | 8°C | 1°C | 21°C 2004 | -3°C 2010 | 37% |
| May 7 | 9°C | 1°C | 19°C 1993 | -3°C 2010 | 39% |
| May 8 | 9°C | 1°C | 21°C 2004 | -4°C 1991 | 39% |
| May 9 | 9°C | 1°C | 17°C 1994 | -4°C 1991 | 39% |
| May 10 | 9°C | 1°C | 17°C 2018 | -3°C 1999 | 39% |
| May 11 | 10°C | 2°C | 20°C 2018 | -4°C 2004 | 39% |
| May 12 | 10°C | 2°C | 22°C 2018 | -3°C 1999 | 40% |
| May 13 | 10°C | 2°C | 23°C 2018 | -2°C 2004 | 40% |
| May 14 | 10°C | 2°C | 23°C 2018 | -3°C 1995 | 40% |
| May 15 | 10°C | 3°C | 22°C 2010 | -4°C 1996 | 40% |
| May 16 | 11°C | 3°C | 24°C 2018 | -3°C 2017 | 40% |
| May 17 | 11°C | 3°C | 21°C 2010 | -2°C 1997 | 40% |
| May 18 | 11°C | 3°C | 22°C 2013 | -3°C 1997 | 40% |
| May 19 | 11°C | 3°C | 25°C 2010 | -3°C 1996 | 40% |
| May 20 | 12°C | 4°C | 22°C 2010 | -1°C 1997 | 41% |
| May 21 | 12°C | 4°C | 19°C 2014 | -2°C 1997 | 41% |
| May 22 | 12°C | 4°C | 20°C 2018 | -2°C 1997 | 40% |
| May 23 | 12°C | 4°C | 21°C 2014 | -1°C 1997 | 40% |
| May 24 | 12°C | 4°C | 20°C 2005 | -3°C 1997 | 40% |
| May 25 | 13°C | 5°C | 19°C 2018 | -2°C 1997 | 39% |
| May 26 | 13°C | 5°C | 20°C 2003 | 0°C 2001 | 38% |
| May 27 | 13°C | 5°C | 20°C 1992 | 0°C 2001 | 38% |
| May 28 | 13°C | 5°C | 22°C 2013 | -1°C 1993 | 39% |
| May 29 | 13°C | 5°C | 22°C 1995 | 0°C 2001 | 40% |
| May 30 | 13°C | 6°C | 24°C 2013 | -2°C 2001 | 40% |
| May 31 | 13°C | 6°C | 23°C 2013 | 1°C 1996 | 38% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+3).
- May 1
- sunrise 4:44 AM, sunset 9:49 PM
- May 31
- sunrise 3:00 AM, sunset 11:35 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.