Weather in Alonnisos, Greece in September

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Visiting Alonnisos, Greece in September

September is one of the best months to visit Alonnisos for the best beach weather. It has the most sunshine and best sunbathing and swimming conditions of the year.

September has average maximum temperatures of 25°C (78°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 85% making it very sunny and pleasant with blue skies most of the time. The hours of sunshine per day are 10.6hrs making the days very long and bright. September has total rainfall of 2.4cm (0.9inches) making it extremely dry with very few light showers and most days are rain free. There are just 3.9 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days and rainy days are few and far between. Sea temperatures are a warm 23°C (74°F). September is a good month for swimming in Alonnisos with comfortable temperatures for most people.

Also consider visiting Alonnisos in one of the other best months of June, July, August, for the best beach weather.

Also consider one of our other suggestions for September.

Can you sunbathe in Alonnisos in September?

Yes, September is a perfect time for sunbathing in Alonnisos.

September has average maximum temperatures of 25°C (78°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 85% making it very sunny and pleasant with blue skies most of the time. The hours of sunshine per day are 10.6hrs making the days very long and bright. September has total rainfall of 2.4cm (0.9inches) making it extremely dry with very few light showers and most days are rain free. There are just 3.9 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days and rainy days are few and far between.

More about September temperature and sunshine.

Can you swim in Alonnisos in September?

Yes, September is a good month for swimming in Alonnisos with warm sea temperatures 23°C (74°F).

More about September sea temperatures.

Is September a good time to holiday in Alonnisos?

Yes, September is a great time for a holiday in Alonnisos.

September has average maximum temperatures of 25°C (78°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 85% making it very sunny and pleasant with blue skies most of the time. The hours of sunshine per day are 10.6hrs making the days very long and bright. September has total rainfall of 2.4cm (0.9inches) making it extremely dry with very few light showers and most days are rain free. There are just 3.9 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days and rainy days are few and far between. Sea temperatures are a warm 23°C (74°F). September is a good month for swimming in Alonnisos with comfortable temperatures for most people.

More about the September temperatures and sunshine.

Is Alonnisos warm in September?

Yes, Alonnisos is very warm and perfect for sunbathing on clear days in September.

The average maximum temperature in Alonnisos in September is 25°C (78°F). The average maximum temperature is 29°C (85°) in the previous month and 21°C (69°F) in the next month.

The average temperature in Alonnisos in September is 23°C (74°F). The average temperature is 27°C (81°F) in the previous month and 19°C (66°F) in the next month.

More info about the September temperatures and sunshine.

How sunny is Alonnisos in September?

The average day light hours per day in Alonnisos in September are 12.5. The sunshine percentage is 85% making it very sunny and pleasant with blue skies most of the time. The hours of sunshine per day are 10.6hrs making the days very long and bright.

More about September sunshine.

Temperature in Alonnisos in September

The average maximum temperature in Alonnisos in September is 25°C (78°F). The average maximum temperature is 29°C (85°F) in the previous month and 21°C (69°F) in the next month.

The average temperature in Alonnisos in September is 23°C (74°F). The average temperature is 27°C (81°F) in the previous month and 19°C (66°F) in the next month.

The average minimum temperature in Alonnisos in September is 21°C (71°F). The minimum temperature is 25°C (78°F) in the previous month and 18°C (64°F) in the next month.

Sunshine in Alonnisos in September

During September the average day light hours are 12.5 per day in Alonnisos. The sunshine percentage is 85% making it very sunny and pleasant with blue skies most of the time. The hours of sunshine per day are 10.6hrs making the days very long and bright.

The ultraviolet index in Alonnisos in September is typically 7 during September. An ultraviolet index reading of 8 to 10 indicates a very high risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 15 minutes. Take extra precautions because unprotected skin and eyes will be damaged and can burn quickly. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in Alonnisos in September

The average sea water temperature in Alonnisos in September is 23.2°C (73.8°F) which is warm and pleasant for relaxing and swimming for long periods.

Rainfall in Alonnisos in September

The average total rainfall in Alonnisos in September is 2.4cm (0.9inches) and on average there are 3.9 rainy days in September making it a very dry time to visit the beach.

Humidity in Alonnisos in September

The maximum dew point (an indicator of humidity) in Alonnisos in September is 18°C (65°F) which is somewhat uncomfortable for most people in cities but fine on a beach. The dew point is 21°C (70°F) in the previous month and 15°C (15°F) in the next month.

The average maximum relative humidity in Alonnisos in September is typically 78.5%. The maximum relative humidity is 71.5% in the previous month and 81.1% in the next month.

The average relative humidity in Alonnisos in September is typically 67.1%. The average relative humidity is 59.6% in the previous month and 72.6% in the next month.

Wind Speed in Alonnisos in September

The average maximum wind speed in Alonnisos in September is typically 16KM/H (10MPH). The average maximum wind speed is 17KM/H (11MPH) in the previous month and 14KM/H (9MPH) in the next month.

The average wind speed in Alonnisos in September is typically 10KM/H (6MPH). The average wind speed is 11KM/H (7MPH) in the previous month and 9KM/H (6MPH) in the next month.

The average wind direction in Alonnisos in September is from the North.

Monthly Averages

Suggested Beaches in September

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Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.

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Need Inspiration?

Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.