Monthly climate guide
Kos weather in April
April in Kos is typically mild, with average daytime highs around 20°C (68°F) and night-time lows near 14°C (58°F). The month usually brings about 41 mm of rain (fairly dry) and is a mix of sun and cloud. Daytime highs are 3°C warmer than March and 4°C cooler than May.
What stands out in April
- In Kos, April is mid-spring.
- Good walking weather for combining Neratzia Castle and Asklepion in one day.
- Temperatures are climbing — May is around 4°C warmer.
- Kos is usually about 2°C warmer than Kálymnos, 30 km away, in April.
Avg high
20°C
68°F
Avg low
14°C
58°F
Rainfall
41 mm
fairly dry
Humidity
72%
relative
Sky
41%
cloud · a mix of sun and cloud
Kos weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 14°C / 57°F | 10°C / 51°F | 166 mm | 74% | 56% |
| February | 15°C / 59°F | 11°C / 52°F | 112 mm | 75% | 51% |
| March | 17°C / 62°F | 12°C / 54°F | 74 mm | 74% | 48% |
| April | 20°C / 68°F | 14°C / 58°F | 41 mm | 72% | 41% |
| May | 24°C / 75°F | 18°C / 65°F | 28 mm | 70% | 36% |
| June | 28°C / 83°F | 22°C / 71°F | 7 mm | 66% | 18% |
| July | 32°C / 89°F | 24°C / 75°F | 2 mm | 60% | 8% |
| August | 32°C / 90°F | 25°C / 76°F | 3 mm | 60% | 7% |
| September | 29°C / 84°F | 22°C / 72°F | 19 mm | 63% | 13% |
| October | 25°C / 76°F | 19°C / 66°F | 50 mm | 66% | 27% |
| November | 20°C / 69°F | 16°C / 60°F | 88 mm | 68% | 38% |
| December | 16°C / 61°F | 12°C / 54°F | 134 mm | 72% | 49% |
What to pack for April
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A small travel umbrella, just in case
Is April a good time to visit Kos?
Our Kos guide recommends: May–June and September–October for warm sea and fewer crowds.
Rent a bike in Kos Town; there are cycle lanes along the coast.
Best time to visit Kos →Other Greece cities in April
Cite or embed this data
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Kos weather in April. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/greece/kos/april
<a href="https://weathercompare.eu/weather/greece/kos/april">Kos weather in April</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/greece/kos" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Kos weather in April"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/greece/kos/april">Kos weather in April</a> – WeatherCompare</p>
Kos in April: quick answers
Is April a good time to visit Kos?
Yes. April is one of the best months for Kos, with highs around 20°C and about 41 mm of rain.
How warm is Kos in April?
Average highs are about 20°C (68°F) and average lows about 14°C (58°F), based on 10 years of daily data.
Does it rain a lot in Kos in April?
Kos typically gets around 41 mm of rain in April — fairly dry.
When is the best time to visit Kos?
May–June and September–October for warm sea and fewer crowds.
Figures are long-term averages for the area around Kos (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.