Greece
Kos in October: weather, sea & travel advice
This month's data profile
Strong month under the current formula
Kos in October is climatically well suited to city breaks, family holidays, beach holidays and active holidays and hiking. The average daily high is around 25 °C, and the sea is about 23 °C. With about 5 rainy days it is dry.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
91/100 · #1
Warmth
#5
Dryness
#6
Sun
#8
Sea warmth
#4
Published best categories: Overall, City break, Active, Family
Kos · OctoberPhoto: Stimoroll · CC BY-SA 4.0Climate facts
- Average high
- 25 °C
- Average low
- 19 °C
- Sea
- 23 °C
- Rainy days (est.)
- 5 rainy days (est.)
- Sun (est.)
- 5 h/day
- Humidity
- 67 %
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 |
|---|---|---|---|---|---|---|---|---|---|
| September | 29 | 22 | 2 | 16 | 7.2 | 63 | 3.9 | 25 | 90 |
| October (selected) | 25 | 19 | 5 | 45 | 5.2 | 67 | 3.6 | 23 | 91 |
| November | 20 | 15 | 9 | 91 | 3.5 | 70 | 4.0 | 21 | 73 |
How do the previous and next months compare?
Baseline: October (91/100)
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 | |
|---|---|---|---|---|---|---|---|---|---|
| September | -1 | +4.1 °C | +3.2 °C | -3.3 | -29.9 mm | +2 h | -4.1 % | +0.3 m/s | +1.8 °C |
| November | -18 | -4.4 °C | -3.3 °C | +3.8 | +45.8 mm | -1.7 h | +3.1 % | +0.4 m/s | -1.9 °C |
All twelve months in context

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Useful next decisions
Frequently asked questions
How warm is Kos in October?
The average daily high is around 25 °C, with an average daily low of about 19 °C.
Can you swim in Kos in October?
The sea is about 23 °C (swimmable).
Does it rain a lot in Kos in October?
The curated estimate is about 5 rainy days per month, not a directly measured long-term average. Total precipitation averages around 45 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. October is one of them.