Which is the hottest month in Ios?

The hottest time of year in Ios is normally August. Expect maximum daytime temperatures to reach 31°C with high heat and humidity.

Which month has the most rain in Ios?

In terms of rainfall, December is usually the wettest month in Ios with 80mm on average. There are normally 10 days in December with some rain.

When is it sunniest in Ios?

The sunniest time of year in Ios is normally July with bright sunshine on average for 84% of daylight hours; that's 12 hours of sunshine per day.

When is the sea warmest in Ios?

The sea is usually at its warmest in Ios in August when the water temperature reaches 26°C.

Best time to visit Ios

Q: When is the best time to visit Ios?

The best times to visit Ios, Greece are in May, June, July, August and September Maximum daytime temperature = 22 - 30°C.

The best times to visit Ios, Greece are in May, June, July, August and September based on our default weather conditions. Update your weather preferences to see which months best match.

Ios by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Greece

TUI sale: up to £300 off holidays in 2026/2027

Sale

Save up to £300 on holidays (Jan 2026-Nov 2027)
Book online with TUI Black Friday discount code
Sign up to myTUI. Discount varies by spend. T&Cs apply

Go to TUI deal >>

Expires at 23:59 on Tuesday 2nd Dec 2025 · View all TUI offers

TUI deal finder

Destination

When is the best time to visit Ios?

The best times to visit Ios, Greece are in May, June, July, August and September based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]

Change the criteria to reflect your weather preferences.

0
Jan
0
Feb
0
Mar
2
Apr
5
May
5
Jun
5
Jul
5
Aug
5
Sep
4
Oct
2
Nov
0
Dec

Change criteria

Max Day Temperature (°C)

13
Jan
13
Feb
15
Mar
18
Apr
22
May
26
Jun
27
Jul
26
Aug
24
Sep
21
Oct
18
Nov
15
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for Greece (Ios) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)