December · Greece
Best time to visit Kos in December Weather, crowds & prices
Weather in Kos in December
Average temperature 15°C, 136 mm of rain, about 27 days with 6+ hours of sunshine and 70% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
December score
4.5/10
Ranked #12 of 12 months
- Avg temp
- 15°C
- Rainfall
- 136 mm
- Humidity
- 70%
- Days with 6h+ sun
- 27
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
December in Kos scores 4.5/10 for beach and coastal travel - ranked #12 of 12. Expect around 15°C, 136 mm of rain, and roughly 27 days with 6+ hours of sunshine this month.
Kos pairs the Asklepion and a plane tree linked to Hippocrates with sandy beaches and flat cycling routes.
December in Kos — the hardest end of the year
Temperatures hover around 15°C (60°F) — the kind of month where neither heat nor cold forces the schedule.
136 mm of rain makes this a wet month here, though with about 27 days with 6+ hours of sunshine there is still bright weather between the fronts.
That is 4.5/10 on the same scale — 12th of 12 months, versus 10/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.
Budget for low-season pricing, and crowds are light for this destination.
If your dates are flexible, June is materially better in Kos — 5.5 points higher on the same scale.
Frequently asked
- What is the weather like in Kos in December?
- In December, Kos averages 15°C, 136 mm of rain, and about 27 days with 6+ hours of sunshine. Its climate-comfort score is 4.5/10.
- Is December a good time to visit Kos?
- December earns a 4.5/10 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 in December?
- Expect about 136 mm of rain in December. Average humidity is 70% and there are about 27 days with 6+ hours of sunshine.
Curated in Kos
Tickets & experiences
Things to do in Kos
Kos, Greece. Live activities and tours from GetYourGuide, matched to this destination.