September weather forecast
Kalimnos, Greece

September, the first month of the autumn in Kalimnos, is also a moderately hot month, with an average temperature fluctuating between 19°C (66.2°F) and 28°C (82.4°F).

Temperature

A subtle shift in Kalimnos's weather is observed as August turns into September, with the average high temperature reducing from a hot 31°C (87.8°F) to a warm 28°C (82.4°F). Kalimnos records an average nighttime low of 19°C (66.2°F) in September.

Rainfall

In Kalimnos, in September, it is raining for 4 days, with typically 16mm (0.63") of accumulated precipitation. In Kalimnos, Greece, during the entire year, the rain falls for 87 days and collects up to 737mm (29.02") of precipitation.

Sea temperature

In September, the average sea temperature is 24.5°C (76.1°F).
Note: People sensitive to cold might find swimming in 24.5°C (76.1°F) challenging. However, conditions like sunshine, wind, and ambient temperature play a significant role in the overall comfort. Wetsuits, while optional, might be beneficial.

Daylight

In September, the average length of the day in Kalimnos is 12h and 25min.
On the first day of the month, sunrise is at 06:43 and sunset at 19:40. On the last day of September, sunrise is at 07:06 and sunset at 18:56 EEST.

Sunshine

In September, the average sunshine is 11h.

UV index

The average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 7 in September translates into these instructions:
Resist overexposure. Safeguarding from solar damage is indispensable. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be alert! The reflection of water and sand augments UV radiation intensity.