Town in County Kerry, Ireland
Killarney weather by month and the best time to visit
When to go to Killarney
May–June and September have long light and fewer tour buses. July–August is crowded and pricey; winters are wet and many hostels and tour operators close.
Killarney weather by month
Average daily high, rainfall and conditions.
- Jan9°138 mm
- Feb9°104 mm
- Mar10°95 mm
- Apr12°84 mm
- May15°91 mm
- Jun18°94 mm
- Jul19°105 mm
- Aug18°110 mm
- Sep17°101 mm
- Oct14°128 mm
- Nov11°142 mm
- Dec9°143 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 9°C47°F | 4°C40°F | 138 mm | 93% | Cold |
| February | 9°C47°F | 4°C39°F | 104 mm | 92% | Cold |
| March | 10°C50°F | 4°C40°F | 95 mm | 90% | Cold |
| April | 12°C54°F | 6°C42°F | 84 mm | 87% | Cool |
| May | 15°C59°F | 8°C47°F | 91 mm | 85% | Cool |
| June | 18°C64°F | 11°C51°F | 94 mm | 84% | Cool |
| July | 19°C66°F | 12°C54°F | 105 mm | 86% | Pleasant |
| August | 18°C65°F | 12°C54°F | 110 mm | 87% | Pleasant |
| September | 17°C62°F | 11°C51°F | 101 mm | 88% | Cool |
| October | 14°C57°F | 9°C48°F | 128 mm | 90% | Cool |
| November | 11°C51°F | 6°C44°F | 142 mm | 92% | Cold |
| December | 9°C48°F | 5°C41°F | 143 mm | 93% | Cold |
Best months across Ireland
Quick answers
What is the best month to visit Killarney?
May–Jun, Sep. May–June and September have long light and fewer tour buses. July–August is crowded and pricey; winters are wet and many hostels and tour operators close.
When is the rainy season in Killarney?
Rain peaks in December with about 143 mm. No month averages 150 mm or more.
What is the hottest month in Killarney?
July, with average highs of 19°C (66°F).
How cold does Killarney get?
The coolest nights are in February, averaging 4°C (39°F).
More about Killarney
Going to Killarney solo?
SoloSquare is where travelers, nomads and locals in Killarney meet up for small plans: coffee, dinners, walks and day trips. Join one, or start your own in a minute.
Sources
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Temperatures are adjusted by 0.7°C for the city's elevation. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.