Kos Climate: Sunshine Hours, Temperature & Best Time to Visit

Kos climate month by month: sunshine hours, temperature, rain and day length from weather station data 1991–2020. Best time to visit: May, June, September. Sunniest month: July.

  • 3,217 hours of sunshine a year – 1.9 times as much as London. Warmest is August at 33 °C by day.
  • Best time to visit: May, June, September

Sunshine and temperature in Kos month by month

  • January: 4.7 h Sun/day (146 h), Daytime high 17 °C, Night 8 °C, Rain 152 mm, Holiday score 27
  • February: 5.5 h Sun/day (155 h), Daytime high 18 °C, Night 7 °C, Rain 108 mm, Holiday score 39
  • March: 7.8 h Sun/day (241 h), Daytime high 20 °C, Night 9 °C, Rain 63 mm, Holiday score 59
  • April: 9.3 h Sun/day (280 h), Daytime high 23 °C, Night 11 °C, Rain 43 mm, Holiday score 80
  • May: 11.2 h Sun/day (347 h), Daytime high 27 °C, Night 14 °C, Rain 24 mm, Holiday score 98
  • June: 12.7 h Sun/day (382 h), Daytime high 30 °C, Night 20 °C, Rain 6 mm, Holiday score 99
  • July: 13.1 h Sun/day (406 h), Daytime high 33 °C, Night 23 °C, Rain 2 mm, Holiday score 90
  • August: 12.0 h Sun/day (373 h), Daytime high 33 °C, Night 23 °C, Rain 2 mm, Holiday score 89
  • September: 10.2 h Sun/day (307 h), Daytime high 30 °C, Night 20 °C, Rain 20 mm, Holiday score 95
  • October: 8.1 h Sun/day (252 h), Daytime high 27 °C, Night 15 °C, Rain 49 mm, Holiday score 83
  • November: 6.2 h Sun/day (186 h), Daytime high 23 °C, Night 12 °C, Rain 95 mm, Holiday score 64
  • December: 4.6 h Sun/day (142 h), Daytime high 19 °C, Night 9 °C, Rain 150 mm, Holiday score 33
  • Temperature: NASA POWER model value (grid, ±2–3 °C) · Sunshine: estimated from NASA satellite data (±15 %) · Rain: NASA POWER model value (grid, ±2–3 °C). Averages 1991–2020, source: Deutscher Wetterdienst (CLIMAT station data, CC BY 4.0) and NASA POWER; single years differ.

Questions

  • When is the best time to visit Kos? By sunshine, warmth and rain the best months are May, June, September. Sunniest is July with 406 hours of sunshine, warmest August at 33 °C.
  • How many hours of sunshine does Kos get a year? About 3,217 hours – 1.9 times as many as London (1,675 hours).
  • When does it rain most in Kos? In January, with 152 mm on average. The driest month is July.
  • How warm is Kos in January and July? In January the average daytime high is 17 °C, in July 33 °C.