Climate averages 1991–2020
Derry weather
in October.
A cool, moderately wet month: the 6th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a cool month in Derry: daytime highs average 12.3°C and nights cool to about 8.0°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 88 mm of rain on roughly 16 days, which makes October a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 33 min on an average October day.
The nearest other city in this atlas is Lisburn (97 km away). In October its highs average 12.5°C, about as warm as Derry, with 86 mm of rain.
Among the 143 cities listed in the United Kingdom, Derry ranks 134th of 143 for the warmest October highs and joint 112th of 143 for the driest October (rainfall, lowest first). The mean October high of those 143 cities is 13.6°C; Derry is 1.3°C cooler than that mean.
From October to November, average highs fall by 3.0°C to 9.3°C, and monthly rainfall rises from 88 mm to 90 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
Derry climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.1°C3.0°C | 3.0°C | 87 | 16.4 | 7.88 h |
| February | 7.5°C3.0°C | 3.0°C | 76 | 15.1 | 9.610 h |
| March | 9.0°C3.7°C | 3.7°C | 75 | 15.6 | 11.812 h |
| April | 11.1°C5.1°C | 5.1°C | 74 | 15.4 | 14.114 h |
| May | 13.8°C7.6°C | 7.6°C | 78 | 15.1 | 16.116 h |
| June | 15.9°C10.2°C | 10.2°C | 87 | 15.5 | 17.317 h |
| July | 17.3°C11.9°C | 11.9°C | 93 | 16.8 | 16.817 h |
| August | 17.1°C11.9°C | 11.9°C | 94 | 16.7 | 15.015 h |
| September | 15.4°C10.4°C | 10.4°C | 75 | 14.2 | 12.813 h |
| October, selected | 12.3°C8.0°C | 8.0°C | 88 | 15.5 | 10.511 h |
| November | 9.3°C5.4°C | 5.4°C | 90 | 16.6 | 8.58 h |
| December | 7.4°C3.4°C | 3.4°C | 90 | 15.8 | 7.37 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
- Lisburn in OctoberUnited Kingdom · 97 kmHigh 12.5°C · Low 8.3°C · 86 mm rain
- Belfast in OctoberUnited Kingdom · 99 kmHigh 12.8°C · Low 9.0°C · 86 mm rain
- Dublin in OctoberIreland · 198 kmHigh 13.3°C · Low 8.6°C · 78 mm rain
- Tallaght in OctoberIreland · 200 kmHigh 12.8°C · Low 8.0°C · 78 mm rain
- Paisley in OctoberUnited Kingdom · 204 kmHigh 11.8°C · Low 6.7°C · 122 mm rain
- Douglas in OctoberIsle of Man · 205 kmHigh 13.1°C · Low 11.0°C · 117 mm rain
- Glasgow in OctoberUnited Kingdom · 215 kmHigh 11.7°C · Low 6.4°C · 110 mm rain
- East Kilbride in OctoberUnited Kingdom · 215 kmHigh 11.1°C · Low 5.7°C · 110 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 Derry) is explained once on the Derry year overview and on the Sources, method and limits page.