When to go · Ios
Ios in May
Good month. Outside the best window (Jun and Sep (warm sea, fewer people); Jul–Aug for nightlife). Across Greece: Warm, green and open; sea cool but swimmable late in the month. Best for sightseeing and hiking.
Key facts
- Verdict
- Good
- Temperature
- 23°C73°F / 15°C59°F
- average high / low
- Rain days
- 2
- Crowds
- Medium
- Greece overall
- Prices
- Medium
- Greece overall
Verdict
Outside the best window (Jun and Sep (warm sea, fewer people); Jul–Aug for nightlife). Across Greece: Warm, green and open; sea cool but swimmable late in the month. Best for sightseeing and hiking.
Weather in May
- IosHighs around 23 °C, lows around 15 °C, rain on about 2 daysHighs around 73 °F, lows around 59 °F, rain on about 2 days
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Orthodox Easter (Good Friday to Easter Monday) big impact
30 Apr – 3 May 2027 (moves yearly) · Greece
The main holiday: candlelit processions, midnight service, lamb on spits. Ferries and rooms sold out; shops shut.
Crowds and prices
- Crowds · Greece overall
- Medium
- Prices · Greece overall
- Medium
Greece overall: Warm, green and open; sea cool but swimmable late in the month. Best for sightseeing and hiking.
What to pack
Nothing unusual for the weather this month.