Cork, Ireland skyline

Cork Weather in May

What May is usually like in Cork, Ireland — from 2006–2025 averages.

Expect Cork to reach about 15°C (59°F) by day and 8.5°C (47.3°F) at night in May, with 14 rainy days bringing 77 mm and around 10.1 hours of sunshine each day.

Avg high

15°C (59°F)

Avg low

8.5°C (47.3°F)

Rainfall

77 mm (3 in)

Rainy days

14 days

Sunshine

10.1 h / day

Humidity

79%

May vs the rest of the year

May is warmer than 7 of the other 11 months, and the 3rd driest month in Cork.

MonthAvg highvs MayRainRainy days
January8.5°C (47.3°F)−6.5°C (−11.7°F)89 mm13
February9°C (48.2°F)−6°C (−10.8°F)86 mm12
March10.1°C (50.2°F)−4.9°C (−8.8°F)81 mm13
April12.4°C (54.3°F)−2.6°C (−4.7°F)73 mm12
May15°C (59°F)—77 mm14
June17.5°C (63.5°F)+2.5°C (+4.5°F)76 mm12
July19°C (66.2°F)+4°C (+7.2°F)84 mm13
August18.5°C (65.3°F)+3.5°C (+6.3°F)80 mm13
September16.8°C (62.2°F)+1.8°C (+3.2°F)79 mm10
October14°C (57.2°F)−1°C (−1.8°F)114 mm13
November10.7°C (51.3°F)−4.3°C (−7.7°F)101 mm13
December9.1°C (48.4°F)−5.9°C (−10.6°F)106 mm14

What May feels like in Cork

In Cork, May brings late spring. Afternoons are cool, pleasant for walking as long as you keep a layer on. The gap between afternoon and night is small, so nights are cool and the temperature hardly changes after dark. Damp air makes the cold feel rawer than the numbers alone suggest.

Rain in Cork in May

Dry days are the exception, with rain on about every other day. Each rainy day adds about 5.5 mm (0.2 in), a proper wetting rather than a sprinkle. The yearly figure is similar, around 6.9 mm per wet day. It is among the three driest months of the year.

Daylight and sunshine in May

On 15 May the sun rises at about 5:41 am and sets around 9:18 pm local time, giving 15 h 37 min of daylight. The days are stretching out — 1 h 47 min more daylight than mid-April. The sun is out for roughly 65% of those daylight hours, so there are plenty of bright spells.

How May compares to the rest of the year

Ranked by average high, May comes out as the 5th warmest month in Cork. Compared with April, afternoons are 2.6°C (4.7°F) warmer, with 4 mm more rain. June continues the upward trend. The next month's average high: 17.5°C (63.5°F).

Who May suits

  • Sightseeing: a good fit — daytime temperatures are fine for walking around.
  • Parks & outdoor: a good fit — pleasant for gardens, parks and riversides.
  • Beach: less ideal — the sea air is too cool.

Tips for visiting Cork in May

Rain Protection

A packable rain jacket saves the day on showery afternoons.

Light Jacket

Cool days — a light jacket or sweater for walking around.

Sunglasses

Frequent sunshine — sunglasses and a light hat.

Quick questions

How warm is Cork in May?

It feels cool: typical highs are 15°C (59°F), with lows near 8.5°C (47.3°F).

Does it rain a lot in Cork in May?

Yes, fairly — rain falls about every other day and totals about 77 mm, so an umbrella is worth carrying.

What should I wear in Cork in May?

Pack rain protection, a light jacket and sunglasses. Evenings feel similar to the day, so the same clothes work from morning to night.

Is May or June better for visiting Cork?

June, clearly: it ranks #4 of 12 among Cork's months, against #7 for the other. June is warmer and has fewer rainy days.

Is May a good time to visit Cork?

Good

Good — mild but cool days, frequent rain (about 14 rainy days), plenty of sunshine (10.1 h a day). Within Cork's own year, May ranks #7 of 12.

May in other Ireland cities

Warmer or drier places in May

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Monthly averages from 20 years of Open-Meteo history (2006–2025), not a forecast — see all 12 months in Cork weather by month.