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Letterkenny weather in October 2025
Expect daytime maximum temperatures of 12°C in Letterkenny, Ireland in October based on long-term weather averages. There are 2 hours of sunshine per day on average with 23 days with some rainfall and typically 132 mm of rainfall in the month.
- 12°C max day temperature
12 - 2 hours of sunshine per day
- 23 days with some rainfall
23 - 7°C min night temperature
7 - 10 hours of daylight per day
10 - No heat & humidity
0 - 132 mm of monthly rainfall
132 - 2 (Low) UV index
2
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Recommended for Ireland
The October weather guide for Ireland (Letterkenny) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about Ireland
How warm is it in Letterkenny in October?
Daytime temperatures usually reach 14°C in Letterkenny in October, falling to 8°C at night.
How sunny is it in Letterkenny in October?
There are normally 3 hours of bright sunshine each day in Letterkenny in October - that's 29% of daylight hours.
How warm is the sea around Letterkenny in October?
The average sea temperature around Letterkenny in October is 13°C.
Does it rain in Letterkenny in October?
There are usually 16 days with some rain in Letterkenny in October and the average monthly rainfall is 67mm.
Letterkenny October sunrise & sunset times
Browse the sunrise and sunset times for Letterkenny in October 2025. Select a month to view Letterkenny sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Wednesday, 1st October 2025 | 06:34 | 18:06 |
| Thursday, 16th October 2025 | 07:03 | 17:29 |
| Friday, 31st October 2025 | 07:33 | 16:55 |
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