When to go · Ios
Ios, month by month
The best months for Ios: Jun, Jul, Aug, Sep. Months to avoid: Jan, Feb, Mar, Nov, Dec.
Month by month
- JanuaryAvoidListed as a month to avoid: Nov–Mar (most businesses shut); mid-Aug for Meltemi wind and crowds.14 °C / 9 °C, 9 rain days57 °F / 48 °F, 9 rain daysCrowds: Low
- FebruaryAvoidListed as a month to avoid: Nov–Mar (most businesses shut); mid-Aug for Meltemi wind and crowds.14 °C / 9 °C, 8 rain days57 °F / 48 °F, 8 rain daysCrowds: Low
- MarchAvoidListed as a month to avoid: Nov–Mar (most businesses shut); mid-Aug for Meltemi wind and crowds.16 °C / 10 °C, 6 rain days61 °F / 50 °F, 6 rain daysCrowds: Low
- AprilGoodOutside the best window (Jun and Sep (warm sea, fewer people); Jul–Aug for nightlife). Across Greece: Wildflowers and good walking; Orthodox Easter (12 April 2026, 2 May 2027) fills ferries and rooms. Islands start reopening.19 °C / 12 °C, 4 rain days66 °F / 54 °F, 4 rain daysCrowds: Medium · 1 festival or holiday
- MayGoodOutside 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.23 °C / 15 °C, 2 rain days73 °F / 59 °F, 2 rain daysCrowds: Medium · 1 festival or holiday
- JuneGreatInside Ios's best window: Jun and Sep (warm sea, fewer people); Jul–Aug for nightlife.27 °C / 19 °C, 1 rain days81 °F / 66 °F, 1 rain daysCrowds: High
- JulyGreatInside Ios's best window: Jun and Sep (warm sea, fewer people); Jul–Aug for nightlife.29 °C / 22 °C, 0 rain days84 °F / 72 °F, 0 rain daysCrowds: High
- AugustGreatInside Ios's best window: Jun and Sep (warm sea, fewer people); Jul–Aug for nightlife.29 °C / 22 °C, 0 rain days84 °F / 72 °F, 0 rain daysCrowds: High · 1 festival or holiday
- SeptemberGreatInside Ios's best window: Jun and Sep (warm sea, fewer people); Jul–Aug for nightlife.26 °C / 20 °C, 1 rain days79 °F / 68 °F, 1 rain daysCrowds: Medium
- OctoberGoodOutside the best window (Jun and Sep (warm sea, fewer people); Jul–Aug for nightlife). Across Greece: Still swimmable in Crete and Rhodes; many Cyclades businesses close after mid-month.22 °C / 17 °C, 4 rain days72 °F / 63 °F, 4 rain daysCrowds: Low
- NovemberAvoidListed as a month to avoid: Nov–Mar (most businesses shut); mid-Aug for Meltemi wind and crowds.18 °C / 13 °C, 7 rain days64 °F / 55 °F, 7 rain daysCrowds: Low
- DecemberAvoidListed as a month to avoid: Nov–Mar (most businesses shut); mid-Aug for Meltemi wind and crowds.15 °C / 11 °C, 9 rain days59 °F / 52 °F, 9 rain daysCrowds: Low