Greece
Kos in May: weather, sea & travel advice
This month's data profile
Strong month under the current formula
Kos in May is climatically well suited to city breaks, active holidays and hiking, family holidays and beach holidays. The average daily high is around 24 °C, and the sea is about 19 °C. With about 4 rainy days it is dry.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
86/100 · #4
Warmth
#6
Dryness
#5
Sun
#4
Sea warmth
#7
Published best categories: Overall, City break, Active, Family
Kos · MayPhoto: Stimoroll · CC BY-SA 4.0Climate facts
- Average high
- 24 °C
- Average low
- 18 °C
- Sea
- 19 °C
- Rainy days (est.)
- 4 rainy days (est.)
- Sun (est.)
- 9 h/day
- Humidity
- 70 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| April | 19 | 14 | 6 | 42 | 7.3 | 72 | 3.7 | 17 | 72 |
| May (selected) | 24 | 18 | 4 | 24 | 8.7 | 70 | 3.2 | 19 | 86 |
| June | 28 | 21 | 1 | 5 | 9.9 | 63 | 3.6 | 22 | 87 |
How do the previous and next months compare?
Baseline: May (86/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| April | -14 | -4.3 °C | -3.6 °C | +1.7 | +18 mm | -1.4 h | +2.4 % | +0.6 m/s | -2.1 °C |
| June | +1 | +4.7 °C | +3.8 °C | -3.1 | -18.8 mm | +1.2 h | -6.4 % | +0.4 m/s | +2.7 °C |
All twelve months in context
Find a place to stay
Where to stay in Kos
Compare available stays, prices and cancellation terms for Kos on Booking.com.
Booking.comFind places to stayAffiliate link: there is no extra cost to you.
Useful next decisions
Frequently asked questions
How warm is Kos in May?
The average daily high is around 24 °C, with an average daily low of about 18 °C.
Can you swim in Kos in May?
The sea is about 19 °C (refreshing).
Does it rain a lot in Kos in May?
The curated estimate is about 4 rainy days per month, not a directly measured long-term average. Total precipitation averages around 24 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Kos?
By the climate score, May, June, September and October are the strongest months for Kos. For a beach trip: June, July, August and September. May is one of them.