Letterkenny Weather in October
Average highs run from 14°C on October 1 to 10°C on October 31, and lows from 9°C to 7°C. Normal precipitation for the month is 124 mm over about 22 wet days.
October day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
October at a glance
- Average high
- 12°C
- Average low
- 8°C
- Precipitation
- 124 mm
- Reanalysis high
- 18°COct 3, 2000
- Reanalysis low
- 0°COct 18, 1993
- Daylight
- 11 h 34 min to 9 h 24 min
- Cloud cover
- 81%
- Humidity
- 90%
- Dew point
- 8°C
- Wind
- 23.4 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 |
|---|---|---|---|---|---|
| Oct 1 | 14°C | 9°C | 18°C 2002 | 5°C 2020 | 66% |
| Oct 2 | 13°C | 9°C | 17°C 2013 | 6°C 2016 | 68% |
| Oct 3 | 13°C | 9°C | 18°C 2000 | 5°C 1994 | 67% |
| Oct 4 | 13°C | 9°C | 16°C 1997 | 4°C 1994 | 67% |
| Oct 5 | 13°C | 9°C | 17°C 2013 | 6°C 1999 | 66% |
| Oct 6 | 13°C | 9°C | 18°C 2013 | 5°C 2018 | 64% |
| Oct 7 | 13°C | 8°C | 17°C 2013 | 5°C 2014 | 63% |
| Oct 8 | 13°C | 8°C | 18°C 1995 | 5°C 1993 | 63% |
| Oct 9 | 13°C | 8°C | 16°C 1999 | 5°C 2004 | 63% |
| Oct 10 | 13°C | 8°C | 18°C 2018 | 6°C 2004 | 63% |
| Oct 11 | 13°C | 8°C | 17°C 2007 | 4°C 2013 | 62% |
| Oct 12 | 12°C | 8°C | 16°C 2007 | 5°C 2012 | 63% |
| Oct 13 | 12°C | 8°C | 17°C 2006 | 3°C 1993 | 64% |
| Oct 14 | 12°C | 8°C | 17°C 1995 | 2°C 1993 | 63% |
| Oct 15 | 12°C | 8°C | 16°C 2005 | 3°C 1993 | 63% |
| Oct 16 | 12°C | 8°C | 17°C 1997 | 2°C 1993 | 64% |
| Oct 17 | 12°C | 8°C | 16°C 2001 | 0°C 1993 | 64% |
| Oct 18 | 12°C | 8°C | 17°C 1997 | 0°C 1993 | 65% |
| Oct 19 | 12°C | 7°C | 14°C 2013 | 4°C 1992 | 66% |
| Oct 20 | 11°C | 7°C | 17°C 2018 | 3°C 2004 | 69% |
| Oct 21 | 11°C | 7°C | 15°C 2015 | 3°C 2002 | 70% |
| Oct 22 | 11°C | 7°C | 16°C 1996 | 2°C 1993 | 71% |
| Oct 23 | 11°C | 7°C | 16°C 1996 | 3°C 2010 | 71% |
| Oct 24 | 11°C | 7°C | 15°C 2005 | 3°C 2010 | 71% |
| Oct 25 | 11°C | 7°C | 14°C 2001 | 1°C 2010 | 70% |
| Oct 26 | 11°C | 7°C | 16°C 2005 | 2°C 2012 | 70% |
| Oct 27 | 11°C | 7°C | 17°C 2005 | 2°C 2012 | 70% |
| Oct 28 | 11°C | 7°C | 15°C 2009 | 3°C 2018 | 70% |
| Oct 29 | 11°C | 7°C | 15°C 2009 | 2°C 2008 | 70% |
| Oct 30 | 11°C | 7°C | 15°C 2009 | 2°C 1992 | 70% |
| Oct 31 | 10°C | 7°C | 15°C 2014 | 3°C 2018 | 71% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+1).
- October 1
- sunrise 7:33 AM, sunset 7:07 PM
- October 31
- sunrise 7:32 AM, sunset 4:56 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.