Keflavík Weather in April
Average highs run from 4°C on April 1 to 6°C on April 30, and lows from 1°C to 3°C. Normal precipitation for the month is 99 mm over about 18 wet days.
April day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
April at a glance
- Average high
- 5°C
- Average low
- 2°C
- Precipitation
- 99 mm
- Reanalysis high
- 10°CApr 22, 2004
- Reanalysis low
- -6°CApr 10, 1991
- Daylight
- 13 h 32 min to 16 h 43 min
- Cloud cover
- 77%
- Humidity
- 84%
- Dew point
- 1°C
- Wind
- 23.0 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 |
|---|---|---|---|---|---|
| Apr 1 | 4°C | 1°C | 6°C 2004 | -5°C 2000 | 63% |
| Apr 2 | 4°C | 1°C | 7°C 2004 | -5°C 2015 | 63% |
| Apr 3 | 4°C | 1°C | 7°C 2009 | -5°C 2020 | 63% |
| Apr 4 | 4°C | 1°C | 8°C 2014 | -5°C 2020 | 64% |
| Apr 5 | 4°C | 1°C | 8°C 2003 | -5°C 2020 | 63% |
| Apr 6 | 4°C | 1°C | 8°C 2003 | -5°C 2005 | 63% |
| Apr 7 | 4°C | 1°C | 7°C 1999 | -6°C 2005 | 64% |
| Apr 8 | 4°C | 1°C | 8°C 2003 | -2°C 2020 | 63% |
| Apr 9 | 5°C | 1°C | 8°C 2011 | -5°C 1991 | 64% |
| Apr 10 | 5°C | 1°C | 8°C 1993 | -6°C 1991 | 63% |
| Apr 11 | 5°C | 1°C | 8°C 2019 | -4°C 2013 | 61% |
| Apr 12 | 5°C | 2°C | 8°C 2019 | -4°C 2013 | 60% |
| Apr 13 | 5°C | 2°C | 8°C 2019 | -4°C 1999 | 60% |
| Apr 14 | 5°C | 2°C | 8°C 2019 | -3°C 1999 | 60% |
| Apr 15 | 5°C | 2°C | 8°C 2019 | -2°C 1999 | 58% |
| Apr 16 | 5°C | 2°C | 9°C 2018 | -4°C 1999 | 58% |
| Apr 17 | 5°C | 2°C | 8°C 2003 | -4°C 2000 | 57% |
| Apr 18 | 5°C | 2°C | 9°C 2003 | -6°C 2000 | 55% |
| Apr 19 | 5°C | 2°C | 10°C 2005 | -5°C 2000 | 55% |
| Apr 20 | 6°C | 2°C | 9°C 2004 | -3°C 2000 | 55% |
| Apr 21 | 6°C | 2°C | 10°C 2004 | -3°C 2000 | 52% |
| Apr 22 | 6°C | 2°C | 10°C 2004 | -3°C 2000 | 51% |
| Apr 23 | 6°C | 2°C | 9°C 2004 | -2°C 2010 | 52% |
| Apr 24 | 6°C | 2°C | 9°C 2004 | -2°C 2017 | 51% |
| Apr 25 | 6°C | 2°C | 9°C 2019 | -3°C 2015 | 51% |
| Apr 26 | 6°C | 2°C | 9°C 2005 | -4°C 2015 | 53% |
| Apr 27 | 6°C | 3°C | 9°C 2005 | -3°C 2002 | 53% |
| Apr 28 | 6°C | 3°C | 9°C 2001 | -2°C 2002 | 53% |
| Apr 29 | 6°C | 3°C | 10°C 2007 | -2°C 2002 | 52% |
| Apr 30 | 6°C | 3°C | 10°C 2019 | -2°C 2013 | 52% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT).
- April 1
- sunrise 6:49 AM, sunset 8:21 PM
- April 30
- sunrise 5:07 AM, sunset 9:50 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.