The best times to visit Aletsch Arena (Riederalp for ideal weather are

May 21st to September 16th

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



Other Aletsch Arena (Riederalp Travel Info

Weather in Aletsch Arena (Riederalp


Average temperatures in Aletsch Arena (Riederalp vary greatly. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a very low chance of rain or snow throughout the year. The area is somewhat temperate — in the 54th 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 Aletsch Arena (Riederalp, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally mid July where highs are regularly around 75.7°F (24.3°C) with temperatures rarely dropping below 55.4°F (13°C) at night.

Aletsch Arena (Riederalp Temperatures (Fahrenheit)


Aletsch Arena (Riederalp 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.

Aletsch Arena (Riederalp Perceived Temperature (F)


Aletsch Arena (Riederalp Perceived Temperature (C)



Average Aletsch Arena (Riederalp 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 34.9 30.2 25.2
Feb 38.1 31.2 24.8
Mar 49.9 40.7 31.9
Apr 60.3 50.4 39.4
May 64.6 55.3 45.6
Jun 70.4 61.7 52.6
Jul 74.3 64.8 55
Aug 73 63.7 54.6
Sep 65.4 56.6 47.9
Oct 56.8 48.6 41.1
Nov 45.9 39.2 33.2
Dec 37.8 31.8 26.5

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 1.6 -1 -3.8
Feb 3.4 -0.4 -4
Mar 9.9 4.8 -0.1
Apr 15.7 10.2 4.1
May 18.1 12.9 7.6
Jun 21.3 16.5 11.4
Jul 23.5 18.2 12.8
Aug 22.8 17.6 12.6
Sep 18.6 13.7 8.8
Oct 13.8 9.2 5.1
Nov 7.7 4 0.7
Dec 3.2 -0.1 -3.1



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Aletsch Arena (Riederalp are January, February, and then March. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early January. For example, on the week of January 1st there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid to late November with an average of 1 days of significant precipitation the week of November 19th.

When can you find snow in Aletsch Arena (Riederalp? Weather stations report moderate or seasonal snow likely to be deepest around December, especially close to late November to early December. The best time to ski (if at all) in Aletsch Arena (Riederalp is often around around November 26th 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 Aletsch Arena (Riederalp.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Aletsch Arena (Riederalp (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 0% 0 0
Feb 0% 0 0
Mar 0% 0 0
Apr 0% 0 0
May 0% 0 0
Jun 0% 0 0
Jul 0% 0 0
Aug 0% 0 0
Sep 3% 0 0.4
Oct 5% 0 0.7
Nov 4% 0 1.3
Dec 0% 5.1 0.1

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 0 0 0
Feb 0 0 0
Mar 0 0 0
Apr 0 0 0
May 0 0 0
Jun 0 0 0
Jul 0 0 0
Aug 0 0 0
Sep 3 0 1
Oct 5 0 1.8
Nov 4 0 3.3
Dec 0 13 0.3


Humidity and Wind

Aletsch Arena (Riederalp has some extremely humid months, with other comfortably humid months. The least humid month is April (57.2% relative humidity), and the most humid month is January (83.3%).

Wind in Aletsch Arena (Riederalp is usually calm. The windiest month is April, followed by March and May. April’s average wind speed of around 5.6 knots (6.5 MPH or 10.5 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid March where average top sustained speeds reach 13.7 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Aletsch Arena (Riederalp.

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 3.7 Barely noticeable 9.1 Gentle breeze
Feb 4.7 Light breeze 10.8 Gentle breeze
Mar 5.5 Light breeze 12.6 Gentle breeze
Apr 5.6 Light breeze 12.6 Significant breeze
May 4.9 Light breeze 11.3 Gentle breeze
Jun 4.8 Light breeze 11.1 Significant breeze
Jul 4.5 Light breeze 11 Gentle breeze
Aug 3.8 Barely noticeable 9.7 Gentle breeze
Sep 4.1 Light breeze 10.3 Gentle breeze
Oct 4.1 Light breeze 10 Gentle breeze
Nov 3.5 Barely noticeable 8.5 Gentle breeze
Dec 3.7 Barely noticeable 9 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 83.3%
Feb 73.7%
Mar 62.6%
Apr 57.2%
May 65.9%
Jun 67.7%
Jul 67.5%
Aug 72.5%
Sep 74.7%
Oct 77.9%
Nov 81.8%
Dec 83.3%


Is it Safe to Travel to Aletsch Arena (Riederalp?

Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for Switzerland; 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 14, 2023.


The Busiest and Least Crowded Months

The busiest month for tourism in Aletsch Arena (Riederalp, Switzerland is May, followed by January and June. 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 Aletsch Arena (Riederalp in November. 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 slightly extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 60.3 in November means 60.3% of the tourists vs. May.



Overall Aletsch Arena (Riederalp Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 68.1°F (20.1°C) and 43.8°F (6.6°C) with warmer temperatures in the later months. Rain is nonexistent with roughly 0 days of significant precipitation per month. Spring is the 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 comfortably cool weather with high temperatures that are comfortable. These months see the least precipitation with about 0 days of precipitation per month. June – August is the second busiest season for tourism in Aletsch Arena (Riederalp, so lodging and other accommodations may cost slightly more.

Fall (September through November)

Fall daily highs range from 68.1°F (20.1°C) and 38.5°F (3.6°C), which will feel chilly given the humidity and wind. It rains or snows a normal amount: 1 to 2 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 far too cold this time of year in Aletsch Arena (Riederalp to be enjoyable for warm weather travelers. The average high during this season is between 43.8°F (6.6°C) and 33.6°F (0.9°C). On average, it rains or snows a insignificant amount: consistently 0 times per month. These times of year are fairly slow with tourists.


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