Kalymnos weather by month & the best time to visit
Greece · beach resort · Mediterranean climate
The best time to visit Kalymnos is June — its sunniest month (Sunshine Score 97/100), with July and August close behind. Kalymnos averages about 3,101 hours of sunshine a year. Daytime highs around 24°C / 75°F and roughly 5 mm of rain in June.
When is the best time to visit Kalymnos?
For sunshine, the best time to visit Kalymnos is June, then July and August. The dullest month is January (30/100, 134 mm of rain). The full month-by-month picture is in the table below.
How sunny is Kalymnos?
Kalymnos is one of the sunniest places on Earth: about 3,101 hours of sunshine a year. 67 Sunshine Score points separate June (97) from January (30), so the month you pick matters. It ranks #5 of 40 destinations in Greece for annual sunshine, above the national median of 2,896 hours. Rain has a clear season: the wettest stretch, around January, carries about 57% of the annual 632 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 30 | 13° / 55°F | 11° / 52°F | 134 mm | 2 | 19° / 66°F |
| February | 33 | 13° / 55°F | 11° / 52°F | 99 mm | 3 | 18° / 64°F |
| March | 51 | 15° / 59°F | 12° / 54°F | 58 mm | 5 | 17° / 63°F |
| April | 60 | 16° / 61°F | 14° / 57°F | 37 mm | 6 | 18° / 64°F |
| May | 94 | 20° / 68°F | 17° / 63°F | 21 mm | 8 | 19° / 66°F |
| June | 97 | 24° / 75°F | 21° / 70°F | 5 mm | 9 | 23° / 73°F |
| July | 97 | 26° / 79°F | 22° / 72°F | 1 mm | 10 | 24° / 75°F |
| August | 97 | 26° / 79°F | 23° / 73°F | 1 mm | 9 | 26° / 79°F |
| September | 94 | 24° / 75°F | 21° / 70°F | 18 mm | 7 | 25° / 77°F |
| October | 90 | 21° / 70°F | 19° / 66°F | 43 mm | 5 | 24° / 75°F |
| November | 68 | 18° / 64°F | 16° / 61°F | 88 mm | 3 | 22° / 72°F |
| December | 43 | 15° / 59°F | 13° / 55°F | 127 mm | 2 | 20° / 68°F |
Sea temperature in Kalymnos by month
The sea off Kalymnos is warmest in August at around 26°C / 79°F, and coolest in March at 17°C / 63°F. The water sits at a comfortable 21°C or warmer roughly 6 months a year. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Kalymnos: questions and answers
What kind of destination is Kalymnos?
Kalymnos is a beach resort in Greece with a Mediterranean climate — the sea reaches 26°C at its warmest and is swimmable (21°C+) about 6 months a year.
How many hours of sunshine does Kalymnos get a year?
Kalymnos gets about 3,101 hours of sunshine a year, at its best around June.
When is the best time to visit Kalymnos?
The sunniest time to visit Kalymnos is June, when the Sunshine Score peaks at 97/100 (with July and August close behind). Expect daytime highs around 24°C / 75°F.
What is the least sunny month in Kalymnos?
January is the least sunny month in Kalymnos, scoring 30/100 with about 134 mm of rain.
What is the sea temperature in Kalymnos?
The sea in Kalymnos ranges from about 17°C (March) to 26°C (August). Month-by-month sea temperatures are on this page.
How strong is the sun in Kalymnos?
The typical midday UV index in Kalymnos peaks around 10 (very high) in July, easing to about 2 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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