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The best time to visit Kythnos
May, June, July, August and September — daytime highs around 27°C. Every number on this page is measured, not guessed.
Kythnos month by month
| Month | Day | Night | Wet days | |
|---|---|---|---|---|
| January | 14°C | 10°C | 12 | |
| February | 13°C | 9°C | 8 | |
| March | 14°C | 9°C | 7 | |
| April | 17°C | 12°C | 5 | Shoulder |
| May | 22°C | 16°C | 3 | Best |
| June | 26°C | 20°C | 2 | Best |
| July | 30°C | 24°C | 0 | Best |
| August | 29°C | 24°C | 2 | Best |
| September | 26°C | 21°C | 2 | Best |
| October | 22°C | 17°C | 4 | Shoulder |
| November | 19°C | 15°C | 6 | |
| December | 16°C | 12°C | 9 |
The short version
Warmest: July, around 30°C by day. Coolest: February, around 13°C by day and 9°C at night. Wettest: January with about 12 wet days. Driest: July with about 0.
If you want fewer people: April, October sit right beside the best months. The weather is close and the crowds are not.
Book it for those months
Prices climb as the good months fill up.
Common questions
When is the best time to visit Kythnos?
The best months are May, June, July, August and September, when daytime highs sit around 27°C.
What is the hottest month in Kythnos?
July, with daytime highs around 30°C.
What is the wettest month in Kythnos?
January, with about 12 wet days. The driest is July with about 0.
When is the cheapest time to visit Kythnos?
Prices follow the weather. The months either side of the best ones — April, October — are usually cheaper with similar conditions.
Temperatures and wet days are measured, not estimated: ERA5 reanalysis for 2021-2023, at Kýthnos, South Aegean. Source: Open-Meteo. Hotel and activity links are partner links — the price you pay is the same.