July · Greece
Best time to visit Kos Island in July Weather, crowds & prices
Weather in Kos Island in July
Average temperature 29°C, 2 mm of rain, about 31 days with 6+ hours of sunshine and 54% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
July score
10.0/10
Ranked #2 of 12 months
- Avg temp
- 29°C
- Rainfall
- 2 mm
- Humidity
- 54%
- Days with 6h+ sun
- 31
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
July in Kos Island scores 10.0/10 for beach and coastal travel - one of the top 12-month picks (#2). Expect around 29°C, 2 mm of rain, and roughly 31 days with 6+ hours of sunshine this month.
Kos mixes sandy beaches and cycling paths with the ruins of Hippocrates' ancient healing centre.
July is one of the strongest months in Kos Island (2nd)
July averages 29°C (85°F), so the practical pattern is early mornings, a long midday break, and evenings back outside.
Rain is a non-issue at 2 mm for the month, with about 31 days with 6+ hours of sunshine and 14.3 hours of daylight to work with.
A 10/10 puts this among the year's best months in Kos Island (2nd of 12); only June scores higher, at 10/10.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
Figure on peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Kos Island in July?
- In July, Kos Island averages 29°C, 2 mm of rain, and about 31 days with 6+ hours of sunshine. Its climate-comfort score is 10.0/10.
- Is July a good time to visit Kos Island?
- July earns a 10.0/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Kos Island in July?
- Expect about 2 mm of rain in July. Average humidity is 54% and there are about 31 days with 6+ hours of sunshine.
Curated in Kos Island
Tickets & experiences
Things to do in Kos Island
Kos Island, Greece. Live activities and tours from GetYourGuide, matched to this destination.