Reykjanesbær Weather in May
Average highs run from 7°C on May 1 to 11°C on May 31, and lows from to . Normal precipitation for the month is 87 mm over about 16 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
- 9°C
- Precipitation
- 87 mm
- Record high
- 20°CMay 18, 2025
- Record low
- -6°CMay 4, 1982
- Daylight
- 16 h 49 min to 19 h 57 min
- Cloud cover
- 75%
- Humidity
- 83%
- Dew point
- 3°C
- Wind
- 18.7 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 | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| May 1 | 7°C | 12°C 2019 | -6°C 1987 | 51% | |
| May 2 | 8°C | 2°C | 13°C 2019 | -5°C 1982 | 50% |
| May 3 | 9°C | 13°C 1964 | -5°C 1982 | 50% | |
| May 4 | 9°C | 12°C 2008 | -6°C 1982 | 50% | |
| May 5 | 8°C | 13°C 2008 | -3°C 1997 | 49% | |
| May 6 | 8°C | 15°C 2017 | -4°C 1997 | 49% | |
| May 7 | 9°C | 15°C 2006 | -3°C 1979 | 50% | |
| May 8 | 8°C | 16°C 2006 | -3°C 2015 | 49% | |
| May 9 | 8°C | 14°C 1970 | -2°C 1992 | 49% | |
| May 10 | 9°C | 16°C 2006 | -3°C 1975 | 48% | |
| May 11 | 9°C | 14°C 1960 | -3°C 1975 | 46% | |
| May 12 | 9°C | 16°C 1960 | -5°C 2002 | 44% | |
| May 13 | 9°C | 3°C | 18°C 1960 | -1°C 1955 | 44% |
| May 14 | 9°C | 19°C 1960 | -3°C 1955 | 44% | |
| May 15 | 9°C | 13°C 1960 | -2°C 1993 | 44% | |
| May 16 | 9°C | 19°C 1988 | -2°C 2012 | 44% | |
| May 17 | 9°C | 16°C 1981 | -1°C 1979 | 46% | |
| May 18 | 9°C | 20°C 2025 | -2°C 1979 | 46% | |
| May 19 | 10°C | 15°C 2025 | -2°C 1979 | 46% | |
| May 20 | 9°C | 17°C 2025 | -1°C 1967 | 47% | |
| May 21 | 10°C | 15°C 1972 | 0°C 1958 | 48% | |
| May 22 | 10°C | 5°C | 16°C 2020 | 0°C 2007 | 48% |
| May 23 | 10°C | 5°C | 16°C 1981 | -1°C 1958 | 47% |
| May 24 | 11°C | 15°C 2010 | -1°C 1961 | 47% | |
| May 25 | 11°C | 16°C 1987 | -2°C 1971 | 48% | |
| May 26 | 10°C | 15°C 1987 | -1°C 1971 | 48% | |
| May 27 | 10°C | 14°C 1969 | 1°C 1980 | 48% | |
| May 28 | 11°C | 16°C 2002 | 1°C 1952 | 48% | |
| May 29 | 11°C | 16°C 2004 | 1°C 1952 | 48% | |
| May 30 | 11°C | 18°C 1991 | 1°C 1985 | 46% | |
| May 31 | 11°C | 17°C 2012 | 2°C 1980 | 47% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT).
- May 1
- sunrise 5:04 AM, sunset 9:53 PM
- May 31
- sunrise 3:31 AM, sunset 11:28 PM
Other months
Sources
Records: NOAA GHCN-Daily, station ICW00016201, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.