May · typical climate, not a forecast
Donegal in May
Ireland
Solid escape
16°C day · 11°C night · 52% rain · 16h daylight · quiet · €975 estimated
Live · Donegal
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Reading…
Live · Tallinn (you)
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Cool Score breakdown
Scored for 5 nights from Tallinn in May.
- Temperature fit99
15.5°C typical high vs your 12–20°C window
w 26 - Heat escape7
0.8°C cooler than Tallinn
w 14 - Rain probability42
52% chance of rain on an average day
w 11 - Daylight hours98
15.8h of daylight mid-month
w 8 - Outdoor conditions80
Comfortable for a full day outside at 15.5°C
w 10 - Crowding74
Quiet for this month
w 8 - Flight + stay cost88
≈€975 estimated for 5 nights vs €1000 budget
w 12 - Nature access90
9/10 — wild ground within reach
w 6 - City atmosphere46
3/10 urban texture · 7/10 food scene
w 4
Why Donegal in May
Cheap, cool and you will have the beach to yourself.
- Slieve League cliffs
- Empty surf beaches
- Glenveagh National Park
What May in Donegal is actually like
In May, Donegal sits around 16°C by day and drops to about 11°C after dark, so a light layer earns its place in the bag even in high summer. That is roughly 1°C cooler than Tallinn at the same time of year — the difference between planning your day around the shade and simply walking out of the door.
Expect rain on roughly 52% of days, usually passing rather than persistent, and about 16 hours of daylight to spend outside. Crowds are quiet this month, and a 5-night trip from Tallinn works out at around €975 including flights, a mid-range stay and everyday spending.
Cheap, cool and you will have the beach to yourself. Days here tend to fill up with slieve league cliffs, empty surf beaches, glenveagh national park — which is why Donegal scores 72 out of 100 for may: solid escape.
Other months
Compare the typical climate month by month.