The best times to visit Sifnos for ideal weather are

March 12th to June 17th


September 10th to December 16th

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



Other Sifnos Travel Info

Weather in Sifnos


Average temperatures in Sifnos vary greatly. Considering humidity, temperatures feel very enjoyable all year with a very low chance of rain or snow throughout the year. The area is more temperate than most — in the 67th 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 Sifnos, 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 88.6°F (31.4°C) with temperatures rarely dropping below 74.9°F (23.8°C) at night.

Sifnos Temperatures (Fahrenheit)


Sifnos Temperatures (Celsius)


“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.

Sifnos Perceived Temperature (F)


Sifnos Perceived Temperature (C)



Average Sifnos 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 57.3 53.1 48.1
Feb 57.2 52.9 48.1
Mar 61.7 56.6 51.5
Apr 67.8 61.8 55.7
May 76.3 69.7 62.8
Jun 83.4 77 70.1
Jul 86.9 80.7 73.9
Aug 86.3 80.4 74.6
Sep 81.5 75.4 69.7
Oct 72.9 67.8 63.2
Nov 66.1 61.4 56.7
Dec 59.8 56 51.5

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 14.1 11.7 8.9
Feb 14 11.6 8.9
Mar 16.5 13.7 10.8
Apr 19.9 16.6 13.2
May 24.6 20.9 17.1
Jun 28.6 25 21.2
Jul 30.5 27.1 23.3
Aug 30.2 26.9 23.7
Sep 27.5 24.1 20.9
Oct 22.7 19.9 17.3
Nov 18.9 16.3 13.7
Dec 15.4 13.3 10.8



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Sifnos are July, August, and then September. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid April. For example, on the week of April 16th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in early to mid February with an average of 2 days of significant precipitation the week of February 12th.

When can you find snow in Sifnos? Weather stations report very large amounts of snow likely to be deepest around April, especially close to early April. The best time to ski (if at all) in Sifnos is often around around April 2nd 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 Sifnos.

Days with precipitation

Snow on the Ground

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

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 14% 0 1.2
Feb 21% 7.9 2.7
Mar 9% 0.4 0.8
Apr 2% 48.8 0.4
May 4% 0 0.6
Jun 2% 0 0.4
Jul 0% 0 0
Aug 0% 0 0
Sep 1% 0 0.1
Oct 7% 0 1.2
Nov 10% 0 1.1
Dec 12% 0.8 2.5

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 14 0 3
Feb 21 20.1 6.9
Mar 9 1 2
Apr 2 124 1
May 4 0 1.5
Jun 2 0 1
Jul 0 0 0
Aug 0 0 0
Sep 1 0 0.3
Oct 7 0 3
Nov 10 0 2.8
Dec 12 2 6.4


Humidity and Wind

Sifnos has some slightly muggy months, with moderately humid months on the other side of the year. The least humid month is July (41.3% relative humidity), and the most humid month is December (65%).

Wind in Sifnos is usually moderate. The windiest month is August, followed by February and January. August’s average wind speed of around 10.9 knots (12.5 MPH or 20.1 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 late January where average top sustained speeds reach 16.8 knots, which is considered a moderate breeze.

Relative Humidity (%)

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

Avg. Relative Humidity


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

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 10.5 Gentle breeze 15.1 Significant breeze
Feb 10.5 Gentle breeze 15.4 Significant breeze
Mar 9.6 Gentle breeze 14.5 Significant breeze
Apr 8.6 Gentle breeze 12.3 Significant breeze
May 6.8 Light breeze 10.9 Significant breeze
Jun 7.7 Gentle breeze 11.4 Significant breeze
Jul 10.2 Gentle breeze 14.3 Significant breeze
Aug 10.9 Gentle breeze 15 Significant breeze
Sep 8.3 Gentle breeze 12.2 Significant breeze
Oct 8.9 Gentle breeze 12.8 Significant breeze
Nov 8.7 Gentle breeze 12.7 Significant breeze
Dec 9.5 Gentle breeze 13.3 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 63.2%
Feb 62.9%
Mar 58.2%
Apr 50.7%
May 46.3%
Jun 42%
Jul 41.3%
Aug 45.8%
Sep 50.1%
Oct 58.5%
Nov 64%
Dec 65%


Is it Safe to Travel to Sifnos?

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 Sifnos, 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 Sifnos 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

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 Sifnos Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 78.7°F (25.9°C) and 59.5°F (15.3°C) with warmer temperatures in the later months. Rain is rare with 1 to 3 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 quite warm. These months see the least precipitation with 0 to 1 days of precipitation per month. June – August is the busiest season for tourism in Sifnos, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 84°F (28.9°C) and 64.9°F (18.3°C), which will feel very nice given the humidity and wind. It rains or snows a normal amount: 0 to 3 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 Sifnos to be enjoyable for warm weather travelers. The average high during this season is between 62°F (16.7°C) and 55.6°F (13.1°C). On average, it rains or snows a fair amount: 4 to 6 times per month. These times of year are fairly slow with tourists.


Best Times to TravelGreece › Sifnos, Greece