Ios, Greece

Ios, Greece

May beach and weather guide

Based on 5 years of historical ERA5 climate data

Photo by T. Selin Erkan on Unsplash

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May beach conditions — historical average

Mixed
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22.7°C Temp
19.2°C Sea temp
1.0 Rain days
12.5h Sunshine hrs
65.9% Humidity

Year by year — mid May

2025 Good 23.0°C · 0 rainy days · 12.7h sun
2024 Good 23.7°C · 1 rainy day · 11.4h sun
2023 Mixed 21.6°C · 3 rainy days · 12.2h sun
2022 Mixed 22.5°C · 1 rainy day · 13.0h sun
2021 Mixed 22.5°C · 0 rainy days · 13.1h sun

Other months in Ios

May June July August September

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Trip type

Each trip type is scored on what matters most for it — snow days for skiing, sea temp for beach, sunshine for sightseeing.

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About Ios in May

Based on 5 years of ERA5 historical climate data, May in Ios has historically been mixed for a beach holiday. Average temperatures of 22.7°C with sea temperatures around 19.2°C and 1.0 rainy days on average.

0 of the last 5 years had good beach conditions during this period. This data uses ERA5 reanalysis records — real historical measurements, not generalised averages.

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