April · Greece
Best time to visit Kos Island in April Weather, crowds & prices
Weather in Kos Island in April
Average temperature 18°C, 19 mm of rain, about 28 days with 6+ hours of sunshine and 72% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
April score
7.5/10
Ranked #7 of 12 months
- Avg temp
- 18°C
- Rainfall
- 19 mm
- Humidity
- 72%
- Days with 6h+ sun
- 28
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
April in Kos Island scores 7.5/10 for beach and coastal travel - ranked #7 of 12. Expect around 18°C, 19 mm of rain, and roughly 28 days with 6+ hours of sunshine this month.
Kos mixes sandy beaches and cycling paths with the ruins of Hippocrates' ancient healing centre.
April in Kos Island: strong conditions, 7th of 12
April averages 18°C (64°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Expect 19 mm of rain — occasional showers rather than washed-out days — alongside about 28 days with 6+ hours of sunshine and 13 daylight hours.
It scores 7.5/10 here, 7th of 12 months, against 10/10 in the destination's best month.
Pack layers you can shed by midday plus one warm layer for the evening.
Plan for mid-season pricing, with crowds are moderate.
Flexible dates? June scores 2.5 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Kos Island in April?
- In April, Kos Island averages 18°C, 19 mm of rain, and about 28 days with 6+ hours of sunshine. Its climate-comfort score is 7.5/10.
- Is April a good time to visit Kos Island?
- April earns a 7.5/10 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 April?
- Expect about 19 mm of rain in April. Average humidity is 72% and there are about 28 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.