Climate averages 1991–2020
Tallaght weather
in October.
A cool, moderately wet month: the 6th warmest and the joint 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a cool month in Tallaght: daytime highs average 12.8°C and nights cool to about 8.0°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 78 mm of rain on roughly 12 days, which makes October a moderately wet month (the joint 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 38 min on an average October day.
The nearest other city in this atlas is Dublin (10 km away). In October its highs average 13.3°C, about as warm as Tallaght, with 78 mm of rain.
Among the 5 cities listed in Ireland, Tallaght ranks 5th of 5 for the warmest October highs and joint 1st of 5 for the driest October (rainfall, lowest first). The mean October high of those 5 cities is 13.3°C; Tallaght is 0.4°C cooler than that mean.
From October to November, average highs fall by 3.3°C to 9.6°C, and monthly rainfall rises from 78 mm to 85 mm.
The annual picture
October in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Tallaght climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.3°C3.0°C | 3.0°C | 69 | 13.1 | 8.18 h |
| February | 7.8°C2.8°C | 2.8°C | 57 | 12.0 | 9.810 h |
| March | 9.4°C3.6°C | 3.6°C | 59 | 12.2 | 11.812 h |
| April | 11.6°C5.2°C | 5.2°C | 66 | 13.8 | 13.914 h |
| May | 14.4°C7.8°C | 7.8°C | 66 | 13.6 | 15.816 h |
| June | 17.0°C10.6°C | 10.6°C | 73 | 13.2 | 16.917 h |
| July | 18.5°C12.4°C | 12.4°C | 76 | 14.8 | 16.416 h |
| August | 18.2°C12.3°C | 12.3°C | 78 | 13.6 | 14.815 h |
| September | 16.1°C10.5°C | 10.5°C | 70 | 12.2 | 12.713 h |
| October, selected | 12.8°C8.0°C | 8.0°C | 78 | 12.4 | 10.611 h |
| November | 9.6°C5.2°C | 5.2°C | 85 | 13.2 | 8.79 h |
| December | 7.6°C3.4°C | 3.4°C | 76 | 12.8 | 7.68 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- Dublin in OctoberIreland · 10 kmHigh 13.3°C · Low 8.6°C · 78 mm rain
- Lisburn in OctoberUnited Kingdom · 139 kmHigh 12.5°C · Low 8.3°C · 86 mm rain
- Belfast in OctoberUnited Kingdom · 149 kmHigh 12.8°C · Low 9.0°C · 86 mm rain
- Douglas in OctoberIsle of Man · 157 kmHigh 13.1°C · Low 11.0°C · 117 mm rain
- Limerick in OctoberIreland · 166 kmHigh 13.4°C · Low 8.2°C · 89 mm rain
- Galway in OctoberIreland · 178 kmHigh 13.1°C · Low 8.3°C · 95 mm rain
- Derry in OctoberUnited Kingdom · 200 kmHigh 12.3°C · Low 8.0°C · 88 mm rain
- Cork in OctoberIreland · 209 kmHigh 13.7°C · Low 9.4°C · 85 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Tallaght) is explained once on the Tallaght year overview and on the Sources, method and limits page.
Dublin lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.