The best times to visit Alonissos for ideal weather are

March 26th to June 10th

or

August 27th to December 2nd

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.

 

 


Other Alonissos Travel Info

Weather in Alonissos

Temperature

Average temperatures in Alonissos vary greatly. Considering humidity, temperatures feel nice most of the year, excluding some cold weeks in the winter, with a very low chance of rain or snow throughout the year. The area is somewhat temperate — in the 60th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Alonissos, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally late July where highs are regularly around 85.2°F (29.6°C) with temperatures rarely dropping below 72.8°F (22.7°C) at night.

Alonissos Temperatures (Fahrenheit)

Key
High
Average
Low

Alonissos Temperatures (Celsius)

Key
High
Average
Low

“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Alonissos Perceived Temperature (F)

Key
High
Average
Low

Alonissos Perceived Temperature (C)

Key
High
Average
Low

 

Average Alonissos Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 55 50.6 45
Feb 55.3 50.8 45.3
Mar 59 54.3 48.3
Apr 64.7 59.2 52.2
May 73.3 67.3 59.6
Jun 80.2 74.5 66.7
Jul 84 78.8 71.9
Aug 83.6 78.8 72.5
Sep 77.7 72.8 66.1
Oct 69.4 65 59.5
Nov 63.6 59.2 53.9
Dec 57.3 53.1 47.6

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 12.8 10.3 7.2
Feb 12.9 10.4 7.4
Mar 15 12.4 9.1
Apr 18.2 15.1 11.2
May 22.9 19.6 15.3
Jun 26.8 23.6 19.3
Jul 28.9 26 22.2
Aug 28.7 26 22.5
Sep 25.4 22.7 18.9
Oct 20.8 18.3 15.3
Nov 17.6 15.1 12.2
Dec 14.1 11.7 8.7

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Alonissos are July, August, and then June. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early July. For example, on the week of July 2nd there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late January with an average of 2 days of significant precipitation the week of January 22nd.

When can you find snow in Alonissos? Weather stations report moderate or seasonal snow likely to be deepest around November, especially close to mid to late November. The best time to ski (if at all) in Alonissos is often around around November 5th when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Alonissos.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Alonissos (in).

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 18% 0.6 2.7
Feb 19% 0.5 3.1
Mar 12% 0.5 2.2
Apr 10% 0.6 1.1
May 6% 0 1.1
Jun 6% 0 1
Jul 0% 0 0
Aug 1% 0 0.3
Sep 6% 0 2
Oct 13% 0.4 2.3
Nov 12% 1.1 1.6
Dec 22% 0.5 4.9

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 18 1.5 6.9
Feb 19 1.3 7.9
Mar 12 1.3 5.6
Apr 10 1.5 2.8
May 6 0 2.8
Jun 6 0 2.5
Jul 0 0 0
Aug 1 0 0.8
Sep 6 0 5.1
Oct 13 1 5.8
Nov 12 2.8 4.1
Dec 22 1.3 12.4

 

Humidity and Wind

Alonissos has some high humidity months, with other comfortably humid months. The least humid month is July (53.9% relative humidity), and the most humid month is November (64.7%).

Wind in Alonissos is usually moderate. The windiest month is February, followed by December and January. February’s average wind speed of around 10.5 knots (12.1 MPH or 19.4 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early February where average top sustained speeds reach 18.7 knots, which is considered a fresh breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Alonissos.

Key
Avg. Relative Humidity

Wind

The graph below shows wind speed (max and average) in knots.

Key
Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 9.7 Gentle breeze 16.5 Significant breeze
Feb 10.5 Gentle breeze 17.2 Strong breeze
Mar 9.4 Gentle breeze 16.1 Significant breeze
Apr 7.9 Gentle breeze 14.2 Significant breeze
May 6.5 Light breeze 12.3 Significant breeze
Jun 6.4 Light breeze 12.2 Significant breeze
Jul 7.3 Gentle breeze 12.5 Significant breeze
Aug 8.1 Gentle breeze 13.5 Significant breeze
Sep 7.8 Gentle breeze 13.4 Significant breeze
Oct 8.8 Gentle breeze 14.2 Significant breeze
Nov 8.9 Gentle breeze 14.4 Significant breeze
Dec 10 Gentle breeze 16.5 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 63.2%
Feb 62.5%
Mar 58.7%
Apr 57.7%
May 55.5%
Jun 54.8%
Jul 53.9%
Aug 56.8%
Sep 57.5%
Oct 62.7%
Nov 64.7%
Dec 63.5%

 

Is it Safe to Travel to Alonissos?

Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for Greece; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Nov 30, 2023.


 

The Busiest and Least Crowded Months

The busiest month for tourism in Alonissos, Greece is June, followed by July and May. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Alonissos in October. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 37.5 in October means 37.5% of the tourists vs. June.

 

 

Overall Alonissos Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 76.1°F (24.5°C) and 55.9°F (13.3°C) with warmer temperatures in the later months. Rain is rare with 2 to 4 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see the least precipitation with 0 to 2 days of precipitation per month. June – August is the busiest season for tourism in Alonissos, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 80°F (26.7°C) and 62.5°F (16.9°C), which will feel very nice given the humidity and wind. It rains or snows a normal amount: 2 to 4 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is too cold this time of year in Alonissos to be enjoyable for warm weather travelers. The average high during this season is between 60.3°F (15.7°C) and 53.5°F (11.9°C). On average, it rains or snows a fair amount: 5 to 7 times per month. These times of year are fairly slow with tourists.

 

Best Times to Travel› Greece › Alonissos, Greece